标题: Electrochemical fixation of CO2 over a Mo plate to prepare a Mo2C film for electrocatalytic hydrogen evolution

作者: Xiao, HS (Xiao, Hansheng); Zhu, H (Zhu, Hua); Weng, W (Weng, Wei); Li, KZ (Li, Kongzhai); Li, W (Li, Wei); Xiao, W (Xiao, Wei)

来源出版物: MATERIALS CHEMISTRY FRONTIERS DOI: 10.1039/d1qm00443c 提前访问日期: MAY 2021

摘要: Conversion of carbon dioxide into a hydrogen-evolution electrocatalyst is an ideal protocol to promote carbon neutrality by eliminating emissions of carbon dioxide and producing carbon-free hydrogen energy. Electrochemical fixation of carbon dioxide in molten salts by using a Mo-plate cathode and a Ni-Cr anode is herein demonstrated to produce a cathodic Mo2C film and anodic oxygen. The molten salt electrochemical method offers an efficient modulation of thickness, adhesion and more importantly, interfacial confinement between the Mo2C film and Mo. The resulting Mo2C-Mo binder-free electrode hence shows enhanced electrocatalytic activity towards hydrogen evolution, as rationalized by the lower hydrogen adsorption energy at the Mo2C-Mo interface. The electrochemical reduction of carbon dioxide over a metal substrate is therefore a generic method integrating fixation of carbon dioxide and surface carbonization of a metal to functional films.

入藏号: WOS:000653085700001

语言: English

文献类型: Article; Early Access

地址: [Xiao, Hansheng; Zhu, Hua; Weng, Wei; Xiao, Wei] Wuhan Univ, Sch Resource & Environm Sci, Hubei Int Sci & Technol Cooperat Base Sustainable, Wuhan 430072, Peoples R China.

[Li, Kongzhai] Kunming Univ Sci & Technol, State Key Lab Complex Nonferrous Met Resources Cl, Kunming 650093, Yunnan, Peoples R China.

[Li, Wei] Guangdong Acad Sci, Inst Rare Met, Guangzhou 510650, Peoples R China.

[Xiao, Wei] Wuhan Univ, Coll Chem & Mol Sci, Hubei Key Lab Electrochem Power Sources, Wuhan 430072, Peoples R China.

通讯作者地址: Xiao, W (通讯作者)，Wuhan Univ, Sch Resource & Environm Sci, Hubei Int Sci & Technol Cooperat Base Sustainable, Wuhan 430072, Peoples R China.

Li, KZ (通讯作者)，Kunming Univ Sci & Technol, State Key Lab Complex Nonferrous Met Resources Cl, Kunming 650093, Yunnan, Peoples R China.

Li, W (通讯作者)，Guangdong Acad Sci, Inst Rare Met, Guangzhou 510650, Peoples R China.

Xiao, W (通讯作者)，Wuhan Univ, Coll Chem & Mol Sci, Hubei Key Lab Electrochem Power Sources, Wuhan 430072, Peoples R China.

电子邮件地址: kongzhai.li@foxmail.com; shs9320@163.com; 00030042@whu.edu.cn

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