Chinese Journal of Catalysis ›› 2025, Vol. 69: 282-291.DOI: 10.1016/S1872-2067(24)60176-2
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Mingxing Chena, Zihe Dua, Nian Liua, Huijie Lia,b, Jing Qia,*(
), Enbo Shangguana,b,*(
), Jing Lia,b, Jiahao Caoc,*(
), Shujiao Yangd, Wei Zhangd, Rui Caod,*(
)
Received:2024-10-10
Accepted:2024-10-28
Online:2025-02-18
Published:2025-02-10
Contact:
E-mail: Supported by:Mingxing Chen, Zihe Du, Nian Liu, Huijie Li, Jing Qi, Enbo Shangguan, Jing Li, Jiahao Cao, Shujiao Yang, Wei Zhang, Rui Cao. Cation and anion modulation activates lattice oxygen for enhanced oxygen evolution[J]. Chinese Journal of Catalysis, 2025, 69: 282-291.
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URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(24)60176-2
Fig. 2. XRD patterns (a), Raman spectra (b), FT-IR spectra (c), XPS survey spectra (d), Ni 2p XPS spectra (e) of Ni(OH)2 and NiCoPSOH. (f) Co 2p XPS spectrum of NiCoPSOH.
Fig. 3. LSV plots (a), DPV plots (b), intensity ratio Iδ(Ni-O)/Iν(Ni-O) (c), Tafel plots (d), Nyquist plots at 1.52 V (e), and Mott-Schottky plots (f) of Ni(OH)2 and NiCoPSOH.
Fig. 4. (a) LSV plots measured in KOH with different pH values. (b) Current density plotted in log scale as a function of pH. (c) LSV plots measured in KOH and TMAOH. (d) Raman spectra measured after running at 1.52 V for 30 min in TMAOH and KOH solutions and washing with deionized water. (e) In-situ Raman spectra at various applied potentials, and (f) DEMS signals of Ni(OH)2 and NiCoPSOH.
Fig. 5. (a) Projected density of states. (b) COHP of Ni?O bond. (c) Bar chart of integral ?COHP up to Fermi level of Ni-O and O 2p band center of NiOOH and NiCoOOH. (d) Schematic illustration of LOM. Gibbs free energy diagrams of the AEM and LOM pathway on NiOOH (e) and NiCoOOH (f).
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