Electrochemical Reduction of Carbon Dioxide and Iron Oxide in Molten Salts to Fe/Fe3C Modified Carbon for Electrocatalytic Oxygen Evolution,Angewandte Chemie International Edition

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Electrochemical Reduction of Carbon Dioxide and Iron Oxide in Molten Salts to Fe/Fe3C Modified Carbon for Electrocatalytic Oxygen Evolution
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2020-10-16 , DOI: 10.1002/anie.202013257
Xinxin Liang ₁ , Juanxiu Xiao ₂ , Wei Weng _{1,

3} , Wei Xiao _{1,

3}

Affiliation

Non‐noble electrocatalyst for the oxygen evolution reaction (OER) is essential for water electrolysis and electrochemical conversion of CO₂. Integrating electrochemical fixation of CO₂ and electrochemical metallurgy to prepare advanced OER electrocatalyst is a promising solution to promote carbon neutrality and renewable energy. Herein, the electrochemical reduction of CO₂ and Fe₂O₃ are combined in molten salts to prepare cathodic Fe₃C‐based electrocatalyst and anodic oxygen at 600 °C with enhanced current efficiency. The resulting Fe₃C‐based electrocatalyst outperforms precious electrocatalyst towards the OER operation in 1 M KOH due to a dynamic structural evolution to form an interface of Fe₃C‐FeOOH.

中文翻译：

熔融盐中的二氧化碳和氧化铁电化学还原为Fe / Fe3C修饰的碳，用于电催化析氧

用于氧气析出反应（OER）的非贵金属电催化剂对于水电解和CO _2的电化学转化至关重要。将CO _2的电化学固定与电化学冶金相结合以制备高级OER电催化剂是促进碳中和和可再生能源的有前途的解决方案。在这里，将CO ₂和Fe ₂ O ₃的电化学还原结合在熔融盐中，以提高的电流效率在600°C下制备基于Fe ₃ C的阴极电催化剂和阳极氧。生成的Fe ₃由于动态结构演变形成了Fe ₃ C-FeOOH的界面，因此基于C的电催化剂在1 M KOH中比OER操作的性能要好于珍贵的电催化剂。

更新日期：2020-10-16

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