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- W2794733768 abstract "We have fabricated a thin film of layered manganese dioxide (MnO2) that accommodates cobalt ions in its interlayer space, constructing the so-called buserite structure, via electrodeposition and the subsequent ion-exchange. The MnO2 layers could isolate Co2+ ions to provide an environment beneficial for oxygen evolution reactions (OERs) in alkaline electrolyte, where fast electron transfer and high utilization efficiency were achieved. The catalyst with isolated Co2+ ions exhibited a mass activity as high as 63.5 A/gCo at an overpotential (η) of 0.4 V, which was much larger than those of Co ions bound in the oxide network. Moreover, it also exhibited excellent stability for long-term OER operation. Namely, the potential needed to generate a current density of 10 mA/cm2 increased only 0.073 V during 100 h operation, and no significant change was seen after 100 consecutive potential cycles between +1.0 and +2.0 V versus the reversible hydrogen electrode." @default.
- W2794733768 created "2018-04-06" @default.
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- W2794733768 date "2018-03-30" @default.
- W2794733768 modified "2023-09-25" @default.
- W2794733768 title "Enhanced Oxygen Evolution Reaction Activity of Co Ions Isolated in the Interlayer Space of Buserite MnO<sub>2</sub>" @default.
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- W2794733768 doi "https://doi.org/10.1021/acs.jpcc.8b01238" @default.
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