Phosphating-induced charge transfer on CoO/CoP interface for alkaline H2 evolution

被引：60

作者：

Li, Qian ^{[1
,2
]}

Wang, Yuchao ^{[1
,2
]}

Zeng, Jian ^{[1
,3
]}

Wu, Qiumei ^{[1
]}

Wang, Qichen ^{[1
,4
]}

Sun, Lian ^{[1
]}

Xu, Liang

Ye, Tong ^{[1
,5
]}

Zhao, Xin ^{[1
]}

Chen, Lei ^{[1
]}

Chen, Zhiyan ^{[2
]}

Chen, Limiao ^{[4
]}

Lei, Yongpeng ^{[1
,4
]}

机构：

[1] Cent South Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China

[2] Cent South Univ Forestry & Technol, Sch Mat Sci & Engn, Changsha 410004, Peoples R China

[3] Jiangxi Univ Sci & Technol, Energy Mat Comp Ctr, Nanchang 330013, Jiangxi, Peoples R China

[4] Cent South Univ, Coll Chem & Chem Engn, Hunan Prov Key Lab Chem Power Sources, Changsha 410083, Peoples R China

[5] Xian Technol Univ, Sch Mat & Chem Engn, Xian 710021, Peoples R China

来源：

CHINESE CHEMICAL LETTERS | 2021年 / 32卷 / 11期

基金：

中国国家自然科学基金;

关键词：

CoO/CoP heterostructure; Phosphating; H-2 evolution reaction; Alkaline media; Solar-driven water splitting; BIFUNCTIONAL ELECTROCATALYST; ELECTROLYSIS; POLYHEDRON; NANOSHEETS; EFFICIENT; GRAPHENE; CARBON; COBALT; OXIDE;

D O I：

10.1016/j.cclet.2021.03.063

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Designing non-noble metal electrocatalysts toward alkaline hydrogen evolution reaction (HER) with high performance at a large current density is urgent. Herein, a CoO/CoP heterostructure catalyst (termed POZ) was designed by a phosphating strategy. The strong electron transfer on the interface of CoO/CoP was experimentally and theoretically proven. POZ showed a low overpotential of 236 mV at 400 mA/cm(2), which was 249 mV lower than non-phosphated sample. It also exhibited a remarkable solar-to-hydrogen conversion efficiency of 10.5%. In this work, the construction of CoO/CoP interface realized by a simple phosphating strategy could provide an important reference to boost the HER performance on those materials not merely metal oxides. (C) 2021 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.

引用

页码：3355 / 3358

页数：4

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