电合成
催化作用
法拉第效率
电化学
镍
过氧化氢
基质(水族馆)
氮气
化学
氢
电催化剂
Atom(片上系统)
无机化学
材料科学
物理化学
电极
冶金
有机化学
海洋学
计算机科学
嵌入式系统
地质学
作者
Chuqian Xiao,Long Cheng,Yihua Zhu,Gengchao Wang,Luyang Chen,Yating Wang,Rongzhen Chen,Yuhang Li,Chunzhong Li
标识
DOI:10.1002/anie.202206544
摘要
Electrochemical production of hydrogen peroxide (H2 O2 ) from O2 on single-atom catalysts has attracted great attention, yet the quest for robust catalysts is driven by achieving >90 % Faradaic efficiency (FE) under industrial-relevant current densities (>100 mA cm-2 ). Herein we synthesize a catalyst that contains single nickel site coordinated by four nitrogen and two oxygen atoms (i.e., N4 Ni1 O2 ) via involving carboxyl functionalized multiwall carbon nanotubes as a substrate to provide extra O coordination to the regular NiN4 site. It has a cathodic energy efficiency of approximately 82 % and a H2 O2 FE of around 96 % at 200 mA cm-2 current density, outperforming the reported single-atom catalysts for H2 O2 electrosynthesis.
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