FeCoNi Ternary Spinel Oxides Nanosheets as High Performance Water Oxidation Electrocatalyst,ChemCatChem

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FeCoNi Ternary Spinel Oxides Nanosheets as High Performance Water Oxidation Electrocatalyst
ChemCatChem ( IF 3.8 ) Pub Date : 2020-03-03 , DOI: 10.1002/cctc.202000004
Qingquan Kong _{1,

2} , Weijing Bai ₁ , Fangzheng Bai ₁ , Xuguang An ₁ , Wei Feng _{1,

2} , Fengling Zhou ₃ , Qiuyue Chen ₁ , Qingyuan Wang _{1,

2} , Chenghua Sun ₄

Affiliation

FeCoNi spinel oxides nanosheets array directly supported on the Ni foam substrate were prepared via a facile wet chemical method with 2‐methylimidazole as a structure directing agent and subsequently annealing. The as‐prepared 0.1Fe−CoNiO/NF offers high intrinsic catalytic activity, high surface area and good conductivity, resulting in enhanced activity for the oxygen evolution reaction (OER) in the alkaline solution. It demonstrates an ultralow overpotentials of 240 mV at 10 mA cm⁻² and a small Tafel slope of 36.8 mV dec⁻¹, with attractive durability during long‐term operation in 1 M KOH solution.

中文翻译：

FeCoNi三元尖晶石氧化物纳米片作为高性能水氧化电催化剂

通过以2-甲基咪唑为结构导向剂的简便湿化学方法，制备了直接支撑在泡沫镍上的FeCoNi尖晶石氧化物纳米片阵列。所制备的0.1Fe-CoNiO / NF具有较高的固有催化活性，较高的表面积和良好的电导率，从而提高了碱性溶液中氧释放反应（OER）的活性。它显示了在10 mA cm ^-2时240 mV的超低过电势和36.8 mV dec ^-1的小Tafel斜率，在1 M KOH溶液中长期运行时具有诱人的耐久性。

更新日期：2020-04-22

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