Chinese Journal of Catalysis ›› 2024, Vol. 56: 139-149.DOI: 10.1016/S1872-2067(23)64565-6
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Yanbin Qia,b, Yihua Zhub, Hongliang Jianga,*(), Chunzhong Lia,b,*(
)
Received:
2023-09-28
Accepted:
2023-11-14
Online:
2024-01-18
Published:
2024-01-10
Contact:
*E-mail: jhlworld@ecust.edu.cn (H. Jiang), czli@ecust.edu.cn (C. Li).
Supported by:
Yanbin Qi, Yihua Zhu, Hongliang Jiang, Chunzhong Li. Promoting electrocatalytic oxidation of methanol to formate through interfacial interaction in NiMo oxide-CoMo oxide mixture-derived catalysts[J]. Chinese Journal of Catalysis, 2024, 56: 139-149.
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URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(23)64565-6
Fig. 1. (a) TEM image and elemental mapping images of Ni100Co0. (b) High-resolution TEM (HRTEM) image of Ni100Co0. (c) SEM image of Ni0Co100. (d) TEM image and elemental mapping images of Ni0Co100. (e) TEM image of Ni50Co50-m coated on the GCE (fresh). (f) TEM image of Ni50Co50-m coated on the GCE (after immersion in KOH-containing electrolyte).
Fig. 2. (a) Comparison of performance of different samples in electrolytes containing 1 mol L?1 MeOH and different concentrations of KOH at 1.51 V. (b) CV curves of Ni50Co50-m for MOR and OER. (c) SCV curves of different samples for MOR in 1 mol L?1 KOH + 1 mol L?1 MeOH electrolyte. (d) Tafel slopes for MOR. (e) Stability test of different samples at 1.51 V. (f) Arrhenius plots of the current densities at 1.46 V. (g) LSV curves with RRDE for MOR. (h) FE of formate obtained at different potentials on Ni50Co50-m.
Fig. 3. (a,b) 2D-Bode plots of Ni100Co0 for OER and MOR. (c) In-situ Raman spectra of Ni100Co0 for MOR. (d) Possible NOR mechanisms of different nickel-based catalysts. (e,f) 2D-Bode plots of Ni0Co100 for OER and MOR. (g) In-situ Raman spectra of Ni0Co100 for MOR.
Fig. 4. (a) Schematic illustration of the working electrode used to simulate the absence of interaction between nickel and cobalt components and the corresponding equivalent circuit model. (b,c) 2D-Bode plots of Ni50|Co50-m and Ni50Co50-m ( for MOR. (d,e) The equivalent circuit models of Ni50Co50-m for MOR before and after simplification.
Fig. 5. (a) Surface coverage of Ni2+/Ni3+ redox species and proton diffusion coefficients of different samples obtained in 1 mol L?1 KOH. (b) FTACV curves for MOR. (c) Charge transfer resistance of different samples obtained in 1 mol L?1 KOH + 1 mol L?1 MeOH. (d,e) LSV curves with RRDE and the calculated FE of OER and MOR. (f) In-situ Raman spectra of Ni50Co50-m for MOR. (g) Schematic illustration of interfacial interaction.
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