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- W4200217036 abstract "Despite the great progress in oxygen evolution reaction catalyst research, obtaining desired coordination environment and optimized electronic structure of active center remains challenging. Here, we propose a feasible strategy of changing the local coordination chemical environment of the active cations via introducing hetero-polyatomic anions based on the crystal field theory. A new type of two-dimensional Co-NO3-OAC[x:y]-hexamine (HMT) catalyst is first prepared in a water bath (OAC= CH3COO-). It is discovered that adding OAC− into nanosheets containing NO3− can regulate both the morphologies and the electronic structure of as-prepared Co-based catalysts. As a result, the optimized Co-NO3-OAC[6:4]-HMT nanosheet aggregates exhibits an overpotential as low as 307 mV at the current density of 10 mA cm−2 and a small Tafel slope (62 mV/dec). Moreover, the voltage attenuation of electrolysis in the 1 M KOH alkaline medium for 10 h is only 8 mV. This superior electrochemical performance can be attributed to the induction effect of hetero–polyatomic anions. Our discovery provides a new insight into understanding the design of electrocatalysis based on anionic coordination chemistry." @default.
- W4200217036 created "2021-12-31" @default.
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- W4200217036 date "2022-03-01" @default.
- W4200217036 modified "2023-09-28" @default.
- W4200217036 title "Toward Efficient Cobalt-Based Oxygen Evolution Reaction: Hetero-Polyatomic Anions-Inductive Effect†" @default.
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- W4200217036 doi "https://doi.org/10.1016/j.mtener.2021.100922" @default.
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