Metal-Organic Framework-Derived CuS Nanocages for Selective CO2 Electroreduction to Formate

被引：35

作者：

Zhang, Xing ^{[1
,2
]}

Sa, Rongjian ^{[1
,3
]}

Zhou, Feng ^{[1
,2
]}

Rui, Yuan ^{[1
]}

Liu, Ruixia ^{[4
]}

Wen, Zhenhai ^{[1
]}

Wang, Ruihu ^{[1
,2
,4
]}

机构：

[1] Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Fujian, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Minjiang Univ, Ocean Coll, Inst Oceanog, Fuzhou 350108, Fujian, Peoples R China

[4] Chinese Acad Sci, Innovat Acad Green Manufacture, Beijing 100190, Peoples R China

来源：

CCS CHEMISTRY | 2021年 / 3卷 / 12期

基金：

中国国家自然科学基金;

关键词：

copper sulfide; hollow structure; CO2; reduction; electrocatalysis; formate; CARBON-DIOXIDE; ELECTROCHEMICAL REDUCTION; ELECTROCATALYTIC CONVERSION; CATALYST; MONOXIDE; METHANOL; DESIGN;

D O I：

10.31635/ccschem.020.202000589

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Electroreduction of CO2 to target products with high activity and selectivity has techno-economic importance for renewable energy storage and CO2 utilization. Herein, we report a hierarchical CuS hollow polyhedron (CuS-HP) for electrocatalytic CO2 reduction (E-CO2R) in neutral pH aqueous media. Under E-CO2R conditions, CuS-HP undergoes structural reconstruction into sulfur-doped metallic Cu catalyst, which promotes formate production with Faradaic efficiency >90% in a wide potential range. The durability of the in situ evolved catalyst has been demonstrated by stable operation for 36 h at a formate partial current density of similar to 16 mA cm(-2) at -0.6 V versus reversible hydrogen electrode. Theoretical thermodynamic analysis reveals that the sulfur-doped Cu(111) facet is responsible for high formate selectivity by promoting formate production and suppressing hydrogen evolution.

引用

页码：199 / 207

页数：9

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