Porous cobalt oxide nanoplates enriched with oxygen vacancies for oxygen evolution reaction

被引：471

作者：

Xu, Wenjing ^{[1
]}

Lyu, Fenglei ^{[1
,2
]}

Bai, Yaocai ^{[1
]}

Gao, Aiqin ^{[1
]}

Feng, Ji ^{[1
]}

Cai, Zhixiong ^{[1
]}

Yin, Yadong ^{[1
]}

机构：

[1] Univ Calif Riverside, Dept Chem, Riverside, CA 92521 USA

[2] Tianjin Univ, Minist Educ, Key Lab Green Chem Technol, Sch Chem Engn & Technol, Tianjin 300350, Peoples R China

来源：

NANO ENERGY | 2018年 / 43卷

关键词：

Polyol reduction; Oxygen vacancies; Oxygen evolution reaction; Cobalt oxide; Cobalt hydroxide; LAYERED DOUBLE HYDROXIDE; CO OXIDATION; EFFICIENT; NANOSHEETS; ELECTROCATALYST; CO3O4; NICKEL; NANOSTRUCTURES; PEROVSKITE; NIO;

D O I：

10.1016/j.nanoen.2017.11.022

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：

Porous cobalt oxide nanoplates enriched with oxygen vacancies are synthesized using a ligand-assisted polyol reduction method. This method enables large-scale synthesis that offers superior uniformity, solution dispersity and controllable concentration of oxygen vacancies on surface. The large surface area of porous cobalt oxide nanoplates together with enriched oxygen vacancies provide more active sites, which promote faster exchange of intermediates and more efficient electron transfer. The as prepared cobalt oxide nanoplates manifest oxygen evolution reaction (OER) overpotential as low as 306 mV at 10 mA/cm(2) in 1 M KOH, which is superior to the values of most reported Co-based electrocatalysts.

引用

页码：110 / 116

页数：7

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