Interfacial coupling effect of CoO/CoMoO4 promotes alkaline hydrogen electrode for hydrogen energy storage system

被引：7

作者：

Chen, Zhibing ^{[1
]}

Guo, Zihao ^{[1
]}

Zhu, Lijie ^{[1
]}

Che, Youcai ^{[1
]}

Yang, Muzi ^{[2
]}

Zhou, Yifan ^{[2
]}

Chen, Jian ^{[2
]}

Xie, Fangyan ^{[2
]}

Wang, Nan ^{[1
]}

Jin, Yanshuo ^{[1
]}

Meng, Hui ^{[1
]}

机构：

[1] Jinan Univ, Guangdong Prov Engn Technol Res Ctr Vacuum Coating, Guangdong Prov Key Lab Opt Fiber Sensing & Commun, Guangzhou Key Lab Vacuum Coating Technol & New Ene, Guangzhou 510632, Guangdong, Peoples R China

[2] Sun Yat sen Univ, Instrumental Anal & Res Ctr, Guangzhou 510275, Guangdong, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2023年 / 48卷 / 42期

基金：

中国国家自然科学基金;

关键词：

Hydrogen oxidation reaction; Hydrogen evolution reaction; Hydrogen energy storage; Interfacial coupling effect; Non-precious metal; EVOLUTION REACTION; OXIDATION REACTION; ELECTROCATALYSTS; PLATINUM; KINETICS; NITRIDE;

D O I：

10.1016/j.ijhydene.2023.01.097

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Herein, CoO and CoMoO4 heterostructure supported on nickel foam (CoO/CoMoO4@NF) are proposed as an effective bifunctional hydrogen evolution reaction (HER) and hydroxide reaction (HOR) electrocatalyst. The electron density distribution at the interface can be optimized by coupling CoO and CoMoO4, thereby improving conductivity and regulating the hydrogen binding energy (HBE) and hydroxyl binding energy (OHBE). CoO/CoMoO4@NF exhibits high stability and activity with an exchange current density of similar to 3.67 mA cm(-2). Co/CoMoO4@NF reaches the current density of -10 mA cm(-2) at only -29 mV and the corresponding Tafel slope of 40.2 mV dec(-1). This work provides a promising solution for non-precious metal catalyst for hydrogen reaction in energy storage. (c) 2023 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：15809 / 15816

页数：8

共 45 条

[1] Mo-modified cobalt phosphide as highly active and stable electrocatalysts for hydrogen oxidation reaction [J].