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- W2792486727 abstract "Oxygen evolution reaction (OER), as the critical step in splitting water, is a thermodynamically “up-hill” process and requires highly efficient catalysts to run. Arrhenius’ law suggests that the higher temperature, the faster the reaction rate, so that a larger OER current density can be achieved at a lower η. Herein, we report an abnormal temperature effect on the performance of Co-based catalysts, e.g., Co3O4, Li2CoSiO4, and Fe-doped Co(OH)x, in OER in alkaline electrolytes. The OER performance reached a maximum when the temperature increased to 65 °C, and the OER performance declined when the temperature became higher. The mechanism was investigated by using Co3O4 as a model sample, and we propose that at an optimal temperature (around 55–65 °C) the main rate-determining step changes from OH– adsorption dominant to a mixed mode and both the adsorption and the cleavage of the OH group can be rate-determining, which leads to the fastest kinetics." @default.
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- W2792486727 date "2018-02-22" @default.
- W2792486727 modified "2023-10-16" @default.
- W2792486727 title "Temperature Effect on Co-Based Catalysts in Oxygen Evolution Reaction" @default.
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- W2792486727 doi "https://doi.org/10.1021/acs.inorgchem.7b03168" @default.
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