催化学报 ›› 2024, Vol. 58: 37-85.DOI: 10.1016/S1872-2067(23)64581-4
罗健颖a,b, 傅捷a,b, 叶丰铭a,b, 梁汉锋c, 王伟俊a,b,c,d,e,*()
收稿日期:
2023-08-24
接受日期:
2023-11-13
出版日期:
2024-03-18
发布日期:
2024-03-28
通讯作者:
*电子信箱: weejun.ong@xmu.edu.my (王伟俊).
基金资助:
Jian Yiing Loha,b, Joel Jie Fooa,b, Feng Ming Yapa,b, Hanfeng Liangc, Wee-Jun Onga,b,c,d,e,*()
Received:
2023-08-24
Accepted:
2023-11-13
Online:
2024-03-18
Published:
2024-03-28
Contact:
*E-mail: weejun.ong@xmu.edu.my (W.-J. Ong).
About author:
Wee-Jun Ong received his B.Eng. and Ph.D. in chemical engineering from Monash University. He is a Professor and Assistant Dean in School of Energy and Chemical Engineering at Xiamen University Malaysia. Starting from 2021, he serves as the Director of Center of Excellence for NaNo Energy & Catalysis Technology (CONNECT). Previously, he was a scientist at Agency for Science, Technology and Research (A*STAR), Singapore. In 2019, he was a visiting scientist at Technische Universität Dresden and a visiting professor at Lawrence Berkeley National Laboratory. His research interests include nanomaterials for energy storage devices, photocatalytic, photoelectrocatalytic, and electrochemical H2O splitting, CO2 reduction and N2 fixation. For more details, refer to Supported by:
摘要:
电化学整体水分解(OWS)作为一种很有应用前景的能源转换技术, 可用于生产清洁的可再生氢燃料, 引起了人们的广泛关注. 然而, 水分解反应的半反应, 即析氧反应(OER), 因动力学缓慢、水分解热力学势垒高和能量消耗大等问题制约了OWS的广泛应用. 研究发现, 采用地球储量丰富的元素设计的多孔材料可以显著提高活性位点数量及其可及性, 增大比表面积, 优化反应物的吸附/脱附, 改善传质, 进而表现出较好的电催化活性. 因此, 系统梳理总结多孔纳米材料在电催化分解水领域的研究进展具有重要的意义.
本文综述了近年来用于析氢反应, OER和OWS的多孔电催化剂的研究进展. 聚焦于合成策略的最新进展, 并结合多孔结构在电催化剂中的独特作用进行了讨论. 概述了各种新兴的多孔电催化剂改性策略, 包括结构工程、相工程、缺陷工程和应变工程; 重点介绍了合成方法、多孔材料性能提升、机理理解、集成实验、水分解的理论研究和先进的改性策略, 并提出了合成工艺. 特别总结了结构-活性关系的研究成果, 为设计和改性具有独特性能的多孔材料提供参考.
最后, 本文强调了当前多孔电催化剂所面临的科学挑战和未来发展方向, 旨在为推动多孔电催化剂在电化学水分解领域的应用和发展提供借鉴.
罗健颖, 傅捷, 叶丰铭, 梁汉锋, 王伟俊. 释放多孔纳米结构的活力: 可持续电催化水分解[J]. 催化学报, 2024, 58: 37-85.
Jian Yiing Loh, Joel Jie Foo, Feng Ming Yap, Hanfeng Liang, Wee-Jun Ong. Unleashing the versatility of porous nanoarchitectures: A voyage for sustainable electrocatalytic water splitting[J]. Chinese Journal of Catalysis, 2024, 58: 37-85.
Fig. 2. Number of annual publications and citations since 2015, sourced from the Web of Science database with the topic keyword “porous” and “electrocatalyst*” and “hydrogen evolution reaction” or “oxygen evolution reaction” or “water splitting” dated on 15th May 2023.
Fig. 3. Timeline of recent advancement of porous electrocatalysts in overall water splitting from 2015 to the present year: 2015. Reproduced with permission from Ref. [43]. Copyright 2015, American Chemical Society; 2016. Reproduced with permission from Ref. [44]. Copyright 2016, Wiley; 2018. Reproduced with permission from Ref. [45]. Copyright 2018, Wiley.; 2019. Reproduced with permission from Ref. [46]. Copyright 2019, Wiley.; 2020. Reproduced with permission from Ref. [47]. Copyright 2020, Wiley.; 2021. Reproduced with permission from Ref. [48]. Copyright 2021, Elsevier.; 2022. Reproduced with permission from Ref. [49]. Copyright 2022, Wiley.; 2023. Reproduced with permission from Ref. [50]. Copyright 2023, Royal Society of Chemistry.
Fig. 5. (a) Trasatti volcano plot for HER in acid solutions. Reproduced with permission from Ref. [65]. Copyright 2014, Beilstein Institute for the Advancement of Chemical Sciences. (b) DFT derived “volcano” plot for HER provided by N?rskov group. Reproduced with permission from Ref. [61]. Copyright 2016, Wiley. (c) Schematic illustration of d-band center theory model. Reproduced with permission from Ref. [63]. Copyright 2011, National Academy of Sciences.
Fig. 6. Mechanisms of HER (a) and Mechanisms of OER (b) on the surface of electrocatalysts in alkaline and acidic medium. (c) Volcano plot of ηthe against standard free energy of ΔGMO?ΔGMOH. Reproduced with permission from Ref. [70]. Copyright 2021, Elsevier.
Fig. 8. (a) Schematic diagram of the in situ XRD cell and detection principle. Reproduced with permission from Ref. [84]. Copyright 2020, Wiley. (b) In situ XRD discharging and charging intensity map. Reproduced with permission from Ref. [91]. Copyright 2022, Elsevier. (c) Schematic diagram of in situ Raman cell. (d) In situ Raman spectra for NiFe foam. Reproduced with permission from Ref. [85]. Copyright 2021, Elsevier. (e) Free energy diagram from DFT calculations. Reproduced with permission from Ref. [88]. Copyright 2023, Elsevier.
Fig. 9. (a) Schematic synthesis progress of vertically aligned nanosized MoS2/N-rGO catalysts. (b) SEM image of MoS2/N-rGO catalyst. (c) SEM images of MoS2/N-rGO composites with different amounts of NH3H2O: 0.25 mL. Reproduced with permission from Ref. [107]. Copyright 2017, Elsevier. (d) Schematic illustration of the synthesis of (MoS2/NiS2/CC). Reproduced with permission from Ref. [106]. Copyright 2021, Elsevier.
Fig. 10. (a) Illustration of the fabrication procedure of (Ni0.33Co0.67) S2 NWs/CC. Reproduced with permission from Ref. [114]. Copyright 2018, American Chemical Society. (b) Synthesis illustration of Co-NiSe/NF nanoflower. Reproduced with permission from Ref. [116]. Copyright 2020, Elsevier. FESEM (c) and TEM (d) image of nickel telluride. Reproduced with permission from Ref. [118]. Copyright 2017, Elsevier.
Fig. 11. Synthesis process (a) and SEM image (b) of Mo0.84Ni0.16-Mo2C@NC nanosphere. Reproduced with permission from Ref. [121]. Copyright 2021, Elsevier. Schematic diagram (c) and TEM image (d) of N-Mo2C@C. Reproduced with permission from Ref. [122]. Copyright 2022, Elsevier.
Fig. 12. (a) Schematic Illustration of the hydrothermal synthesis of a self-supported, flexible composite electrode. (b) SEM image of the 3D electrode. Reproduced with permission from Ref. [125]. Copyright 2017, Royal Society of Chemistry. (c) Schematic diagram of the process and (d) SEM image of urchin-like peapod NiCo2O4@C. Reproduced with permission from Ref. [127]. Copyright 2017, Elsevier. Schematic diagram of the preparation process (e) and SEM image for CoP@NCNFs (f). Reproduced with permission from Ref. [128]. Copyright 2022, Elsevier.
Fig. 13. (a) Schematic illustration for the fabrication of Co3O4/Co-NPC hybrid. (b) SEM image of Co3O4/Co-NPC hybrid. Reproduced with permission from Ref. [133]. Copyright 2018, Elsevier. (c) Schematic illustration of the preparation of porous nanoscale NiO/NiCo2O4 heterostructure. (d) SEM image of NiO/NiCo2O4 heterostructure. Reproduced with permission from Ref. [135]. Copyright 2019, Elsevier. (e) Brief synthesis process of CS-Co/Cs. Reproduced with permission from Ref. [136]. Copyright 2017, American Chemical Society.
Fig. 14. (a) Schematic Illustration of the synthesis process. SEM (b) and TEM (c) images of CoP/NCNHP catalyst. Reproduced with permission from Ref. [139]. Copyright 2018, American Chemical Society. (d) Schematic illustration of the synthesis and structure. TEM (e), SEM (f), and HRTEM (g) images of Fe-Ni5P4/NiFeOH-350. Reproduced with permission from Ref. [140]. Copyright 2021, Elsevier.
Fig. 15. (a) Schematic illustration of the fabrication process. SEM (b) and TEM (c) images of Cu@NiFe LDH. Reproduced with permission from Ref. [141]. Copyright 2017, Royal Society of Chemistry. (d) Schematic illustration for the synthetic process. SEM images of CoNi@CF (e) and CoNI@CF (f) with the molar ratio of Co2+ to Ni2+ at 3:7. Reproduced with permission from Ref. [142]. Copyright 2019, Elsevier.
Fig. 16. Schematic illustration of the synthesis (a) and SEM image (b) of p-CoSe2/CC. Reproduced with permission from Ref. [146]. Copyright 2018, American Chemical Society. SEM image (c) and schematic diagram (d) of CoFe-LDH with electrodeposition time of 200 s. Reproduced with permission from Ref. [147]. Copyright 2019, Elsevier. (e) SEM image of Co-Fe-P foam prepared by electrodeposition. Reproduced with permission from Ref. [149]. Copyright 2018, American Chemical Society.
Fig. 17. (a) Schematic illustration of the fabrication process for Co9S8/WS2 composites with different arrays. Reproduced with permission from Ref. [153]. Copyright 2021, Royal Society of Chemistry. (b) Schematic illustration of the preparation of the nanoframes composed of Co0.6Fe0.4P NPs coated with the carbon matrix. Reproduced with permission from Ref. [157]. Copyright 2019, Royal Society of Chemistry. (c) SEM image of NiCoP@Cu3P/CF. (d) TEM image of NiCoP@Cu3P. Reproduced with permission from Ref. [158]. Copyright 2018, Royal Society of Chemistry. (e) SEM top-view image of porous MoO2 nanosheets synthesized on nickel foam. (f) Synthesis steps of porous MoO2 nanosheets on nickel foam. Reproduced with permission from Ref. [44]. Copyright 2016, Wiley.
Fig. 18. (a) Schematic illustration of the fabrication process of NiFeOx/IF and NiFe-P/IF electrodes. (b) SEM image of NiFeOx/IF electrode. (c) TEM image of NiFeOx nanosheets scrapped from NiFeOx/IF electrode. Reproduced with permission from Ref. [160]. Copyright 2017, Wiley. (d) Illustration of the galvanic replacement reaction for Cu wire and AgNO3. Reproduced with permission Ref. [161]. Copyright 2013 Wiley.
Fig. 19. (a) TEM image of N-Mo2C NSs. Reproduced with permission from Ref. [164]. Copyright 2017, American Chemical Society. SEM (b) and TEM (c) image of CoPS samples. Reproduced with permission from Ref. [165]. Copyright 2021, American Chemical Society. (d) Schematic illustration for synthesis of porous g-C3N4, (e,f) SEM images of g-C3N4 with different melamine to NaCl ratio. Reproduced with permission from Ref. [162]. Copyright 2019, American Chemical Society. (g) Schematic illustration of the preparation of Co12@Ni3S2/NF. FE-SEM images of Co12@Ni3S2 nanocones (h) and Co12@Ni3S2/NF (i) after the long-time test. Reproduced with permission from Ref. [168]. Copyright 2021, Elsevier.
Fig. 20. (a) SEM image of 2D porous CoPo nanosheets. (b) Steady-state polarization curves in 1 mol L?1 KOH for HER and OER. HER (c), OER (d) Tafel plots and steady-state polarization curves (e) for overall water splitting of Ni foam. Reproduced with permission from Ref. [174]. Copyright 2018, Wiley. (f) TEM image of Ni@CoO@Co-MOFC. HER (g) and OER (h) LSV curves. Reproduced with permission from Ref. [175]. Copyright 2021, Royal Society of Chemistry.
Fig. 21. (a) Chronopotentiometry durability test at a constant current density of 100 mA cm?2. (b) Potential shift and corresponding potential loss and retention during 285 h durability test. Reproduced with permission from Ref. [76]. Copyright 2017, Elsevier. SEM (c) and TEM (d) images of NISe2/NF. (e) LSV plot for water splitting systems in 1.0 mol L?1 KOH at a scan rate of 5 mV s?1. (f) Long-term stability measurement of the NiSe2/Ni-based electrolyzer at 10 mA cm?2. Reproduced with permission from Ref. [177]. Copyright 2018, American Chemical Society.
Fig. 22. (a) CV curves of OER with iR-correction. (b) LSV curves of HER with iR correction. (c) Long-term chronopotetiometric measurement for 35 h of OER (black line) and HER (red line). Reproduced with permission from Ref. [181]. Copyright 2018, American Chemical Society. Polarization curves (d) and Tafel plots (e) of MoS2 before and after exfoliation in 2 mol L?1 H2SO4 at a scan rate of 5 mV. (f) EIS plots of 2H MoS2 and C-1T MoS2. Reproduced with permission from Ref. [36]. Copyright 2017, Royal Society of Chemistry.
Fig. 23. (a,b) SEM images of 3D printing graphene-CNT electrode. (c) SEM image of 3D printing GC/NiFeP electrode. HER (d) and OER (e) polarization curves. (f) Two electrode polarization curves for water splitting. Reproduced with permission from Ref. [189]. Copyright 2020, Wiley.
Fig. 24. OER (a) and HER (b) polarization curves with iR correction. (c) Tafel plots for electrodes in 1 mol L?1 KOH. (d) Polarization curve of water electrolysis. Chronoamperometric response curve (e) and HER polarization curves (f) of N-Ni3S2/NF after and before 5000 CV tests. Reproduced with permission from Ref. [197]. Copyright 2017, Wiley. Tafel slope for HER (g), LSV curves (h) and Tafel slope (i) for OER. Reproduced with permission from Ref. [199]. Copyright 2019, Elsevier.
Fig. 25. HER (a), OER (b) and overall water splitting polarization curves (c) for Co-doped NiO/NiFe2O4. Reproduced with permission from Ref. [208]. Copyright 2018, Royal Society of Chemistry. HER (d), OER (e) and overall water splitting LSV curves (f) for Co2P/CoNPC. Reproduced with permission from Ref. [211]. Copyright 2020, Wiley. (g) CV curves of NF/N-CoMoO4 catalyst. Reproduced with permission from Ref. [212]. Copyright 2020, Elsevier. HER (h) and OER (i) LSV curves of NF/T(Ni3S2/MnS-O). Reproduced with permission from Ref. [101]. Copyright 2019, Elsevier.
Fig. 26. (a) Polarization curve with iR correction. (b) Tafel slopes for HER. (c) Plots showing the extraction of Cdl. Reproduced with permission from Ref. [218]. Copyright 2016, American Chemical Society. (d) SEM image of Cu@MoS2. Polarization curve (e) and Tafel slope (f) of HER for Cu@MoS2. Reproduced with permission from Ref. [219]. Copyright 2019, Elsevier. (g) HRTEM image of Co3S4 PNSvac. Polarization curves with iR correction (h) and Tafel slope (i) of HER. Reproduced with permission from Ref. [220]. Copyright 2018, American Chemical Society.
Fig. 27. (a) Standard free energy diagram for HER and (b) OER process. Reproduced with permission from Ref. [224]. Copyright 2018, Wiley. (c) Schematic illustration of porous monolayer NIFe-LDH, (d) H2O adsorption energies and (e) OH* bonding energies on different active sites with various vacancies. Reproduced with permission from Ref. [225]. Copyright 2019, Wiley. (f) Polarization curve for overall water splitting. (g) Partial density of states (PDOS) for dual-vacancy MnO2. (h) Bandgap and possible band edge position for MnO2. Reproduced with permission from Ref. [226]. Copyright 2021, Wiley.
Fig. 28. (a) Nyquist plot under a fixed current density of 10 mA cm?2. (b) Polarization curves for overall water splitting. (c) Time-dependent current density curve for CoMoS4/Ni3S2 hybrid electrodes. Reproduced with permission from Ref. [232]. Copyright 2019, Elsevier. HER (d) and OER (e) polarization curves for different samples. (f) Polarization curves of IP/NP-NF as electrodes for OWS. Reproduced with permission from Ref. [233]. Copyright 2019, Elsevier.
Fig. 29. (a) EIS Nyquist plots of CoO/CoN4 and other samples. (b) Polarization curves of CoO/Co4N/NF as electrodes for OWS. Reproduced with permission from Ref. [234]. Copyright 2018, Royal of Society Chemistry. HER (c) and OER (d) polarization curves for NF/Co5.0Mo1P/NiFe-LDH and other samples. Polarization curves (e) of NF/Co5.0Mo1P/NiFe-LDH as electrodes for OWS and long-term stability test (f) at constant current densities of 100 mA cm?2. Reproduced with permission from Ref. [236]. Copyright 2020, American Chemical Society.
Fig. 30. (a) Merits of 3D MXene architecture. (b) EIS patterns of CoP@3D Ti3C2 MXene and other samples. Reproduced with permission from Ref. [242]. Copyright 2018, American Chemical Society. (c) Overpotentials for HER at different current densities. (d) Overpotentials for OER at different current densities. (e) Charge density difference isosurfaces for Co3Mo/CoMoO3 heterostructure from DFT calculations. Reproduced with permission from Ref. [245]. Copyright 2023, Elsevier.
Fig. 31. (a) Schematic illustration of HER reaction catalyzed by atomically strained MoS2 on curved NPG substrate. (b) Polarization curves of Pt, pure NPG, and MoS2@NPG for HER. Reproduced with permission from Ref. [250]. Copyright 2014, Wiley. HER (c) and OER (d) processes Gibbs free energy diagram for NiSxSe1?x. HER (e), OER (f) and overall water splitting polarization curves (g). Reproduced with permission from Ref. [251]. Copyright 2020, Wiley. (h) Overall water splitting polarization curves for Co2P/Ni2P-2%Mo electrodes. Reproduced with permission from Ref. [252]. Copyright 2020, Elsevier.
Catalyst | Fabrication method | Substrates | Electrolyte | HER | OER | Overall water splitting | Ref. | ||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ηj = 10 (mV) | Tafel slope (mV dec-1) | ηj = 10 (mV) | Tafel slope (mV dec-1) | Ej = 10z (V) | |||||||||||||||||||
Structure engineering (porous structure) | |||||||||||||||||||||||
2D CoPo nanosheets | solvothermal and pyrolysis | NF | 1 mol L‒1 KOH | 158 | 101 | 280 | 59 | 1.52 | [ | ||||||||||||||
Ni@CoO@Co-MOFC | pyrolysis | NF | 1 mol L‒1 KOH | 138 | 59 | 247 | 51 | 1.61 | [ | ||||||||||||||
Structure engineering (self-supported) | |||||||||||||||||||||||
Ni3Se2/NF | hydrothermal | NF | 1 mol L‒1 KOH | — | — | 315 @100 mA cm‒2 | 40.2 | 1.58 | [ | ||||||||||||||
NiSe2/Ni | immersion-selenization | NF | 1 mol L‒1 KOH | 166 | 92.3 | 235 | 63.1 | 1.64 | [ | ||||||||||||||
MoS2/Ni3S2 | electrodeposition + solvothermal | NF | 1 mol L‒1 KOH | 99 | 71 | 185 | 46 | 1.50 | [ | ||||||||||||||
MoS2-CoS2@PCMT | hydrothermal + thermal reduction + acid treatment | porous carbon microtube textile | 1 mol L‒1 KOH | 200 | 95.2 | 215 | 93 | 1.59 | [ | ||||||||||||||
Structure engineering (3D-printing) | |||||||||||||||||||||||
3D P GC/NiFeP | 3D printed graphene materials | — | 1 mol L‒1 KOH | 133@30 mA cm-2 | 97 | 214@30 mA cm-2 | 162 | 1.58 @30 mA cm‒2 | [ | ||||||||||||||
Defect-engineering (doping) | |||||||||||||||||||||||
N-Ni3S2/NF | annealing | NF | 1 mol L‒1 KOH | 110 | — | 330 @100 mA cm‒2 | 70 | 1.48 | [ | ||||||||||||||
N-doped Ni/C | carbonization | — | 1 mol L‒1 KOH | 142 | 52 | 350 | 56 | 1.63 | [ | ||||||||||||||
CoP@NPCSs | coordination- polymerization-pyrolysis | carbon substrate | 1 mol L‒1 KOH | 115 | 109 | 350 | 103 | 1.643 | [ | ||||||||||||||
PrGO/Ni-CoP | hydrothermal + phosphorization | NF | 3 mol L‒1 KOH | 106 | 58.3 | 281.3 | 60.1 | 1.56 | [ | ||||||||||||||
Ni-Mo-P aerogel | induced gelation + in situ doping | carbon cloth | 1 mol L‒1 KOH | 69 | 108.4 | 235 | 96.6 | 1.46 | [ | ||||||||||||||
Fe-Ni3S2/AF | surface assisted chemical vapor transport | SCE | 1 mol L‒1 KOH | 75 | 103 | 267 | 36 | 1.5 | [ | ||||||||||||||
Fe-doped NiSe NSs/CNT | thermal treatment + CVD | carbon paper | 1 mol L‒1 KOH | 242.3 | 130 | 282.7 | 55 | — | [ | ||||||||||||||
Co-doped NiO/NiFe2O4 | solvothermal | NF | 1 mol L‒1 KOH | 84 | 53.6 | 183 | 38.5 | 1.583 | [ | ||||||||||||||
Co2P/CoNPC | phosphidation | SCE | 1 mol L‒1 KOH | 130 | 63 | 328 | 78 | 1.64 | [ | ||||||||||||||
PA-NiO | hydrothermal + phosphorization | NF | 1 mol L‒1 KOH | 138 | 130 | 310@100 mA cm‒2 | 53 | 1.56 | [ | ||||||||||||||
CoMoP@N,P-C | pyrolysis | carbon cloth | 1 mol L‒1 KOH | 152 | 76.8 | 296 | 97 | 1.62 | [ | ||||||||||||||
N-doped carbon/Co/ CoP | carbonization + partial phosphating | carbon paper | 1 mol L‒1 KOH | 208 | 126 | 350 | 94 | 1.72 | [ | ||||||||||||||
Cu8S5/NSC-900 | direct pyrolysis | NF | 1 mol L‒1 KOH | 137 | 136.8 | 313 | 66.5 | 1.64 | [ | ||||||||||||||
FeNi/NPC | pyrolysis | GCE | 0.1 mol L‒1 KOH | 260 | 112 | 0.44 V | 62 | 1.63 | [ | ||||||||||||||
Defect-engineering (vacancy) | |||||||||||||||||||||||
Ni3AlP | solvothermal | NF | 1 mol L‒1 KOH | 80 | 38 | 242 | 76 | 1.55 | [ | ||||||||||||||
d-FeOOH NSs | wet-chemical route | NF | 1 mol L‒1 KOH | 108 | 68 | 265 | 36 | 1.62 | [ | ||||||||||||||
DV-MnO2 | wet-chemical route | — | 1 mol L‒1 KOH | 59 | 63 | 260 | 40 | 1.55 | [ | ||||||||||||||
Hybrid engineering | |||||||||||||||||||||||
CoMoS4/Ni3S2 | hydrothermal+sulfuration | NF | 1 mol L‒1 KOH | 76 | 169 | 200 | 63 | 1.568 | [ | ||||||||||||||
IP/NP-NF | in situ synthesis + phosphorization | NF | 1 mol L‒1 KOH | 63 | 59 | 185 | 47 | 1.567 | [ | ||||||||||||||
CoO/Co4N/NF | hydrothermal | NF | neutral electrolyte | 145 | 80 | 398 | 83 | 1.79 | [ | ||||||||||||||
NF/Co5.0Mo1P/NiFe-LDH | hydrothermal + electrodeposition | NF | 1 mol L‒1 KOH | 98.9 | 93.3 | 225@50 mA cm‒2 | 55 | 1.68 | [ | ||||||||||||||
NiFeMoS/NF-P | electrodeposition + hydrothermal | NF | 1 mol L‒1 KOH | 100 | 121 | 280@150 mA cm‒2 | 69 | 1.52@100 mA cm‒2 | [ | ||||||||||||||
Ni5P4 | contact conversion synthesis | NF | 1 mol L‒1 KOH | 0.15 V | 53 | 1.25 V | 40 | < 1.7 | [ | ||||||||||||||
NiFePx@NiCo2Px | hydrothermal + annealing | NF | 1 mol L‒1 KOH | 97 | — | 230 | — | 1.56 | [ | ||||||||||||||
CoP@3D Ti3C | annealing | RDE | 1 mol L‒1 KOH | 168 | 58 | 298 | 51 | 1.565 | [ | ||||||||||||||
CoNiO2@rGO/NF | hydrothermal + annealing | — | 1 mol L‒1 KOH | 126 | 72 | 272@100 mA cm‒2 | 49 | 1.56 | [ | ||||||||||||||
Co3/Mo/CoMoO3 NPSs | thermal treatment | NF | 1 mol L‒1 KOH | 334@1000 mA cm‒2 | 46.4 | 410@500 mA cm‒2 | 52.7 | 1.59@100 mA cm‒2 | [ | ||||||||||||||
Co(OH)2/La(OH)3@ Cu NW | thermal annealing + electrodeposition | Cu nanowires | 1 mol L‒1 KOH | 36 | 22.9 | 273@100 mA cm‒2 | 89 | 1.56@20 mA cm‒2 | [ | ||||||||||||||
Strain engineering | |||||||||||||||||||||||
NiS0.5Se0.5 NNH | solvothermal | NF | 1 mol L‒1 KOH | 70 | 78 | 257 | 61 | 1.55 | [ | ||||||||||||||
Ni2P/Co2P | hydrothermal | NF | 1 mol L‒1 KOH | 164@100 mA cm‒2 | 45.4 | 357@100 mA cm‒2 | 46.1 | 1.57 | [ |
Table 1 Summary table for electrocatalytic overall water splitting system with modified porous electrocatalysts.
Catalyst | Fabrication method | Substrates | Electrolyte | HER | OER | Overall water splitting | Ref. | ||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ηj = 10 (mV) | Tafel slope (mV dec-1) | ηj = 10 (mV) | Tafel slope (mV dec-1) | Ej = 10z (V) | |||||||||||||||||||
Structure engineering (porous structure) | |||||||||||||||||||||||
2D CoPo nanosheets | solvothermal and pyrolysis | NF | 1 mol L‒1 KOH | 158 | 101 | 280 | 59 | 1.52 | [ | ||||||||||||||
Ni@CoO@Co-MOFC | pyrolysis | NF | 1 mol L‒1 KOH | 138 | 59 | 247 | 51 | 1.61 | [ | ||||||||||||||
Structure engineering (self-supported) | |||||||||||||||||||||||
Ni3Se2/NF | hydrothermal | NF | 1 mol L‒1 KOH | — | — | 315 @100 mA cm‒2 | 40.2 | 1.58 | [ | ||||||||||||||
NiSe2/Ni | immersion-selenization | NF | 1 mol L‒1 KOH | 166 | 92.3 | 235 | 63.1 | 1.64 | [ | ||||||||||||||
MoS2/Ni3S2 | electrodeposition + solvothermal | NF | 1 mol L‒1 KOH | 99 | 71 | 185 | 46 | 1.50 | [ | ||||||||||||||
MoS2-CoS2@PCMT | hydrothermal + thermal reduction + acid treatment | porous carbon microtube textile | 1 mol L‒1 KOH | 200 | 95.2 | 215 | 93 | 1.59 | [ | ||||||||||||||
Structure engineering (3D-printing) | |||||||||||||||||||||||
3D P GC/NiFeP | 3D printed graphene materials | — | 1 mol L‒1 KOH | 133@30 mA cm-2 | 97 | 214@30 mA cm-2 | 162 | 1.58 @30 mA cm‒2 | [ | ||||||||||||||
Defect-engineering (doping) | |||||||||||||||||||||||
N-Ni3S2/NF | annealing | NF | 1 mol L‒1 KOH | 110 | — | 330 @100 mA cm‒2 | 70 | 1.48 | [ | ||||||||||||||
N-doped Ni/C | carbonization | — | 1 mol L‒1 KOH | 142 | 52 | 350 | 56 | 1.63 | [ | ||||||||||||||
CoP@NPCSs | coordination- polymerization-pyrolysis | carbon substrate | 1 mol L‒1 KOH | 115 | 109 | 350 | 103 | 1.643 | [ | ||||||||||||||
PrGO/Ni-CoP | hydrothermal + phosphorization | NF | 3 mol L‒1 KOH | 106 | 58.3 | 281.3 | 60.1 | 1.56 | [ | ||||||||||||||
Ni-Mo-P aerogel | induced gelation + in situ doping | carbon cloth | 1 mol L‒1 KOH | 69 | 108.4 | 235 | 96.6 | 1.46 | [ | ||||||||||||||
Fe-Ni3S2/AF | surface assisted chemical vapor transport | SCE | 1 mol L‒1 KOH | 75 | 103 | 267 | 36 | 1.5 | [ | ||||||||||||||
Fe-doped NiSe NSs/CNT | thermal treatment + CVD | carbon paper | 1 mol L‒1 KOH | 242.3 | 130 | 282.7 | 55 | — | [ | ||||||||||||||
Co-doped NiO/NiFe2O4 | solvothermal | NF | 1 mol L‒1 KOH | 84 | 53.6 | 183 | 38.5 | 1.583 | [ | ||||||||||||||
Co2P/CoNPC | phosphidation | SCE | 1 mol L‒1 KOH | 130 | 63 | 328 | 78 | 1.64 | [ | ||||||||||||||
PA-NiO | hydrothermal + phosphorization | NF | 1 mol L‒1 KOH | 138 | 130 | 310@100 mA cm‒2 | 53 | 1.56 | [ | ||||||||||||||
CoMoP@N,P-C | pyrolysis | carbon cloth | 1 mol L‒1 KOH | 152 | 76.8 | 296 | 97 | 1.62 | [ | ||||||||||||||
N-doped carbon/Co/ CoP | carbonization + partial phosphating | carbon paper | 1 mol L‒1 KOH | 208 | 126 | 350 | 94 | 1.72 | [ | ||||||||||||||
Cu8S5/NSC-900 | direct pyrolysis | NF | 1 mol L‒1 KOH | 137 | 136.8 | 313 | 66.5 | 1.64 | [ | ||||||||||||||
FeNi/NPC | pyrolysis | GCE | 0.1 mol L‒1 KOH | 260 | 112 | 0.44 V | 62 | 1.63 | [ | ||||||||||||||
Defect-engineering (vacancy) | |||||||||||||||||||||||
Ni3AlP | solvothermal | NF | 1 mol L‒1 KOH | 80 | 38 | 242 | 76 | 1.55 | [ | ||||||||||||||
d-FeOOH NSs | wet-chemical route | NF | 1 mol L‒1 KOH | 108 | 68 | 265 | 36 | 1.62 | [ | ||||||||||||||
DV-MnO2 | wet-chemical route | — | 1 mol L‒1 KOH | 59 | 63 | 260 | 40 | 1.55 | [ | ||||||||||||||
Hybrid engineering | |||||||||||||||||||||||
CoMoS4/Ni3S2 | hydrothermal+sulfuration | NF | 1 mol L‒1 KOH | 76 | 169 | 200 | 63 | 1.568 | [ | ||||||||||||||
IP/NP-NF | in situ synthesis + phosphorization | NF | 1 mol L‒1 KOH | 63 | 59 | 185 | 47 | 1.567 | [ | ||||||||||||||
CoO/Co4N/NF | hydrothermal | NF | neutral electrolyte | 145 | 80 | 398 | 83 | 1.79 | [ | ||||||||||||||
NF/Co5.0Mo1P/NiFe-LDH | hydrothermal + electrodeposition | NF | 1 mol L‒1 KOH | 98.9 | 93.3 | 225@50 mA cm‒2 | 55 | 1.68 | [ | ||||||||||||||
NiFeMoS/NF-P | electrodeposition + hydrothermal | NF | 1 mol L‒1 KOH | 100 | 121 | 280@150 mA cm‒2 | 69 | 1.52@100 mA cm‒2 | [ | ||||||||||||||
Ni5P4 | contact conversion synthesis | NF | 1 mol L‒1 KOH | 0.15 V | 53 | 1.25 V | 40 | < 1.7 | [ | ||||||||||||||
NiFePx@NiCo2Px | hydrothermal + annealing | NF | 1 mol L‒1 KOH | 97 | — | 230 | — | 1.56 | [ | ||||||||||||||
CoP@3D Ti3C | annealing | RDE | 1 mol L‒1 KOH | 168 | 58 | 298 | 51 | 1.565 | [ | ||||||||||||||
CoNiO2@rGO/NF | hydrothermal + annealing | — | 1 mol L‒1 KOH | 126 | 72 | 272@100 mA cm‒2 | 49 | 1.56 | [ | ||||||||||||||
Co3/Mo/CoMoO3 NPSs | thermal treatment | NF | 1 mol L‒1 KOH | 334@1000 mA cm‒2 | 46.4 | 410@500 mA cm‒2 | 52.7 | 1.59@100 mA cm‒2 | [ | ||||||||||||||
Co(OH)2/La(OH)3@ Cu NW | thermal annealing + electrodeposition | Cu nanowires | 1 mol L‒1 KOH | 36 | 22.9 | 273@100 mA cm‒2 | 89 | 1.56@20 mA cm‒2 | [ | ||||||||||||||
Strain engineering | |||||||||||||||||||||||
NiS0.5Se0.5 NNH | solvothermal | NF | 1 mol L‒1 KOH | 70 | 78 | 257 | 61 | 1.55 | [ | ||||||||||||||
Ni2P/Co2P | hydrothermal | NF | 1 mol L‒1 KOH | 164@100 mA cm‒2 | 45.4 | 357@100 mA cm‒2 | 46.1 | 1.57 | [ |
Catalyst | Fabrication method | Substrate | Electrolyte | ηj = 10 (mV) | Tafel slope (mV dec‒1) | Ref. |
---|---|---|---|---|---|---|
Structure engineering (porous structure) | ||||||
MoO3‒x | calcination | CC | 0.5 mol L‒1 H2SO4 | 179 | 72 | [ |
Structure engineering (self-supported) | ||||||
MoSx/V2O3 | annealing | CC | 0.5 mol L‒1 H2SO4 | 146 | 45 | [ |
WC-N/W-1200 | phase-inversion tape-casting and pressureless sintering method | ceramic membrane | 0.5 mol L‒1 H2SO4 | 87 | 44.9 | [ |
Structure engineering (phase engineering) | ||||||
1T/2H MoS2 | hydrothermal | — | 0.5 mol L‒1 H2SO4 | ‒309 | 89 | [ |
1T’ MoS2-Ti3C2 | solvothermal | Ti3C2 | 0.5 mol L‒1 H2SO4 | 98 | 45 | [ |
C-1T MoS2 | hydrothermal + lithium intercalation | — | 0.5 mol L‒1 H2SO4 | ‒156 | 42.7 | [ |
Vertically aligned 2H-1T MoS2 | solvothermal | — | 0.5 mol L‒1 H2SO4 | 116 | 60 | [ |
1T/2H-WS2/N-rGO/CC | hydrothermal | CC | 0.5 mol L‒1 H2SO4 | 21.13 | 29.55 | [ |
1 mol L‒1 KOH | 80.35 | 137.02 | ||||
1T/2H MoS2 (25D)/Ti3C2Tx-1 (MTC-1) | ultrasonication + mechanical stirring | GCE | 0.5 mol L‒1 H2SO4 | 280 | 83.8 | [ |
1 mol L‒1 KOH | 300 | 117.2 | ||||
Defect engineering (doping) | ||||||
P-doped MoS2 | hydrothermal | GCE | 0.5 mol L‒1 H2SO4 | 43 | 34 | [ |
Mn-doped CoSe2 | solvothermal | GCE | 0.5 mol L‒1 H2SO4 | 174 | 36 | [ |
Fe-NiS2 | sulfurization | GCE | 0.5 mol L‒1 H2SO4 | 121 | 37 | [ |
Co/β-Mo2C Nps incorporated (N-C/Co/Mo2C) holey nanorods | pyrolysis | GCE | 1 mol L‒1 KOH | 142 | 98.5 | [ |
Defect engineering (vacancy) | ||||||
P-1T-MoS2 | liquid-ammonia-assisted-lithiation | GCE | 0.5 mol L‒1 H2SO4 | 153 | 43 | [ |
Cu@MoS | solvothermal | GCE | 0.5 mol L‒1 H2SO4 | 131 | 51 | [ |
Co3S4 PNSvac | plasma induced dry exfoliation | — | 1 mol L‒1 KOH | 63 | 58 | [ |
b-Mo2C spheres | hydrothermal | — | 1 mol L‒1 KOH | 125 | 70.95 | [ |
Strain engineering | ||||||
3D-MoS2@NPG | CVD | chemical dealloyed nanoporous gold | 0.5 mol L‒1 H2SO4 | 123 | 46 | [ |
W(SexS1‒x)2 NPA | electrochemical anodization + CVD | tungsten substrate | 0.5 mol L‒1 H2SO4 bubbled with H2 | 45 | 59 | [ |
Table 2 Summary table for electrocatalytic hydrogen evolution system with modified porous electrocatalysts.
Catalyst | Fabrication method | Substrate | Electrolyte | ηj = 10 (mV) | Tafel slope (mV dec‒1) | Ref. |
---|---|---|---|---|---|---|
Structure engineering (porous structure) | ||||||
MoO3‒x | calcination | CC | 0.5 mol L‒1 H2SO4 | 179 | 72 | [ |
Structure engineering (self-supported) | ||||||
MoSx/V2O3 | annealing | CC | 0.5 mol L‒1 H2SO4 | 146 | 45 | [ |
WC-N/W-1200 | phase-inversion tape-casting and pressureless sintering method | ceramic membrane | 0.5 mol L‒1 H2SO4 | 87 | 44.9 | [ |
Structure engineering (phase engineering) | ||||||
1T/2H MoS2 | hydrothermal | — | 0.5 mol L‒1 H2SO4 | ‒309 | 89 | [ |
1T’ MoS2-Ti3C2 | solvothermal | Ti3C2 | 0.5 mol L‒1 H2SO4 | 98 | 45 | [ |
C-1T MoS2 | hydrothermal + lithium intercalation | — | 0.5 mol L‒1 H2SO4 | ‒156 | 42.7 | [ |
Vertically aligned 2H-1T MoS2 | solvothermal | — | 0.5 mol L‒1 H2SO4 | 116 | 60 | [ |
1T/2H-WS2/N-rGO/CC | hydrothermal | CC | 0.5 mol L‒1 H2SO4 | 21.13 | 29.55 | [ |
1 mol L‒1 KOH | 80.35 | 137.02 | ||||
1T/2H MoS2 (25D)/Ti3C2Tx-1 (MTC-1) | ultrasonication + mechanical stirring | GCE | 0.5 mol L‒1 H2SO4 | 280 | 83.8 | [ |
1 mol L‒1 KOH | 300 | 117.2 | ||||
Defect engineering (doping) | ||||||
P-doped MoS2 | hydrothermal | GCE | 0.5 mol L‒1 H2SO4 | 43 | 34 | [ |
Mn-doped CoSe2 | solvothermal | GCE | 0.5 mol L‒1 H2SO4 | 174 | 36 | [ |
Fe-NiS2 | sulfurization | GCE | 0.5 mol L‒1 H2SO4 | 121 | 37 | [ |
Co/β-Mo2C Nps incorporated (N-C/Co/Mo2C) holey nanorods | pyrolysis | GCE | 1 mol L‒1 KOH | 142 | 98.5 | [ |
Defect engineering (vacancy) | ||||||
P-1T-MoS2 | liquid-ammonia-assisted-lithiation | GCE | 0.5 mol L‒1 H2SO4 | 153 | 43 | [ |
Cu@MoS | solvothermal | GCE | 0.5 mol L‒1 H2SO4 | 131 | 51 | [ |
Co3S4 PNSvac | plasma induced dry exfoliation | — | 1 mol L‒1 KOH | 63 | 58 | [ |
b-Mo2C spheres | hydrothermal | — | 1 mol L‒1 KOH | 125 | 70.95 | [ |
Strain engineering | ||||||
3D-MoS2@NPG | CVD | chemical dealloyed nanoporous gold | 0.5 mol L‒1 H2SO4 | 123 | 46 | [ |
W(SexS1‒x)2 NPA | electrochemical anodization + CVD | tungsten substrate | 0.5 mol L‒1 H2SO4 bubbled with H2 | 45 | 59 | [ |
Catalyst | Fabrication method | Substrate | Electrolyte | ηj = 10 (mV) | Tafel slope (mV dec-1) | Ref. |
---|---|---|---|---|---|---|
Structure engineering (self-supported) | ||||||
Ni3Se2/NF | hydrothermal | NF | 1 mol L‒1 KOH | 315 | 40.2 | [ |
NiCo2S4/FeOOH nanowires | hydrothermal + anion exchange | carbon cloth | 1 mol L‒1 KOH | 200 | 71 | [ |
Defect engineering (vacancy) | ||||||
H-Vs-Co3-S4 | calcination + sulfidation + reduction | — | 1 mol L‒1 KOH | 270 | 59 | [ |
PM-LDH | coprecipitation | — | 1 mol L‒1 KOH | 230 | 47 | [ |
Hybrid engineering | ||||||
Fe2‒xMnxP | single-pot solution-phase synthesis | GCE | 1 mol L‒1 KOH | 480 | 39 | [ |
NiFeP/MXene | hydrothermal + phosphorization | GCE | 1 mol L‒1 KOH | 312 | 68 | [ |
NiCo2S4/Co9S8 | hydrothermal | GCE | 0.1 mol L‒1 KOH | 0.32 V | 72.16 | [ |
Strain engineering | ||||||
NiFe MOF | hydrothermal | RDE | N2-saturated 0.1 mol L‒1 KOH | 210@200 mA cm‒2 | 68 | [ |
CoO3 NWs (PNWs) | thermal oxidation | GCE | 1 mol L‒1 KOH | 319 | 51 | [ |
Table 3 Summary table for electrocatalytic oxygen evolution system with modified porous electrocatalysts.
Catalyst | Fabrication method | Substrate | Electrolyte | ηj = 10 (mV) | Tafel slope (mV dec-1) | Ref. |
---|---|---|---|---|---|---|
Structure engineering (self-supported) | ||||||
Ni3Se2/NF | hydrothermal | NF | 1 mol L‒1 KOH | 315 | 40.2 | [ |
NiCo2S4/FeOOH nanowires | hydrothermal + anion exchange | carbon cloth | 1 mol L‒1 KOH | 200 | 71 | [ |
Defect engineering (vacancy) | ||||||
H-Vs-Co3-S4 | calcination + sulfidation + reduction | — | 1 mol L‒1 KOH | 270 | 59 | [ |
PM-LDH | coprecipitation | — | 1 mol L‒1 KOH | 230 | 47 | [ |
Hybrid engineering | ||||||
Fe2‒xMnxP | single-pot solution-phase synthesis | GCE | 1 mol L‒1 KOH | 480 | 39 | [ |
NiFeP/MXene | hydrothermal + phosphorization | GCE | 1 mol L‒1 KOH | 312 | 68 | [ |
NiCo2S4/Co9S8 | hydrothermal | GCE | 0.1 mol L‒1 KOH | 0.32 V | 72.16 | [ |
Strain engineering | ||||||
NiFe MOF | hydrothermal | RDE | N2-saturated 0.1 mol L‒1 KOH | 210@200 mA cm‒2 | 68 | [ |
CoO3 NWs (PNWs) | thermal oxidation | GCE | 1 mol L‒1 KOH | 319 | 51 | [ |
Fig. 32. (a) Schematic illustration of the amorphous SACs. Reproduced with permission from Ref. [258]. Copyright 2021, Wiley. (b) Polarization curves of modified MoS2. Reproduced with permission from Ref. [260]. Copyright 2018, Wiley. (c) OER polarization curves if 2D COFs with carbon nanotube. Reproduced with permission from Ref. [261]. Copyright 2021, American Chemical Society.
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