A hollow mesoporous trimetallic NiFeCr hydroxide electrode is prepared via a four-step procedure involving the fast electrodeposition of an Ni/Cr/Fe alloy onto a nickel foam substrate, followed by dealloying, oxidation, and activation. The title electrode shows an ultralow onset overpotential of 210 mV for the oxygen evolution reaction and a high specific capacity of 1768 F g⁻¹ as a redox capacitor.

中文翻译：

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高活性空心中孔NiFeCr氢氧化物作为氧释放反应的电极材料和氧化还原电容器

空心介孔三金属NiFeCr氢氧化物电极通过四步过程制备，该过程包括将Ni / Cr / Fe合金快速电沉积到泡沫镍基材上，然后进行脱合金，氧化和活化。标题电极对于放氧反应显示出210 mV的超低起始超电势，并作为氧化还原电容器具有1768 F g ^-1的高比电容。