Chinese Journal of Catalysis ›› 2022, Vol. 43 ›› Issue (5): 1316-1323.DOI: 10.1016/S1872-2067(21)63938-4
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Limei Lu, Yihe Zhang(), Zhensheng Chen, Feng Feng, Kaixuan Teng, Shuting Zhang, Jialin Zhuang, Qi An(
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Received:
2021-08-14
Accepted:
2021-09-03
Online:
2022-05-18
Published:
2022-03-23
Contact:
Yihe Zhang, Qi An
Supported by:
Limei Lu, Yihe Zhang, Zhensheng Chen, Feng Feng, Kaixuan Teng, Shuting Zhang, Jialin Zhuang, Qi An. Synergistic promotion of HER and OER by alloying ternary Zn-Co-Ni nanoparticles in N-doped carbon interfacial structures[J]. Chinese Journal of Catalysis, 2022, 43(5): 1316-1323.
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URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(21)63938-4
Fig. 1. (a) XRD patterns of the prepared series of catalysts; SEM (b,d), HRTEM (c) images, and corresponding elemental mapping images (e-j) of ZnCoNi/(Ppy/CNTs)4.
Fig. 3. LSV curves (a), Tafel plots (b), linear fitting of the capacitive currents (c), and Nyquist plots (d) of the series of samples as denoted in the images; (e) LSV curves of ZnCoNi/(Ppy/CNT)4 before and after CV; (f) Time dependent current density curves of ZnCoNi/(Ppy/CNTs)4.
Fig. 4. (a) DFT simulation of ΔGH* on the series of catalyst model structures as denoted as in (b-e), which presents models used in DFT calculations and optimized geometric configuration of H adsorption, (f-i) The charge density distribution illustrates the change in electron distribution: yellow area denotes obtaining electrons and blue color denotes loss of electrons, (j-m) Calculated DOS distribution of ZnCo/(Ppy/CNTs)4, ZnNi/(Ppy/CNTs)4, CoNi/(Ppy/CNTs)4 and ZnCoNi/(Ppy/CNTs)4, respectively.
Fig. 5. OER activities of the series of catalysts as denoted in the images in 1 mol/L KOH. (a) LSV curves; (b) Corresponding Tafel plots; (c) Free energy diagrams at the U of 1.23 V.
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