Electrochemically Controlled Synthesis of Ultrathin Nickel Hydroxide Nanosheets for Electrocatalytic Oxygen Evolution

被引：30

作者：

Cao, Li-Ming ^{[1
]}

Cao, Qing-Cai ^{[1
]}

Zhang, Jia ^{[2
]}

Zhu, Xuan-Yi ^{[1
]}

Sun, Rong-Zhi ^{[1
]}

Du, Zi-Yi ^{[1
]}

He, Chun-Ting ^{[1
]}

机构：

[1] Jiangxi Normal Univ, Coll Chem & Chem Engn, Key Lab Funct Small Organ Mol, Minist Educ, Nanchang 330022, Jiangxi, Peoples R China

[2] Jiangxi Normal Univ, Coll Life Sci, Nanchang 330022, Jiangxi, Peoples R China

来源：

INORGANIC CHEMISTRY | 2021年 / 60卷 / 05期

基金：

中国国家自然科学基金;

关键词：

68;

D O I：

10.1021/acs.inorgchem.0c03771

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The development of oxygen evolution reaction (OER) catalysts with high activity and high stability through convenient and economical methods is greatly important for the promotion of hydrogen energy based on electrolysis technology. Herein, by using an unconventional high electrodeposition potential, novel petal-like clusters constructed by cross-linking ultrathin nickel hydroxide nanosheets were controllably synthesized on nickel foam (or copper foam or carbon cloth) and the effect of electrodeposition conditions on their OER performance was carefully explored. Due to the abundant catalytically active sites, promoting electron conduction/mass transmission from the specific micro-nano structure, as well as the ultrasmall thickness of similar to 3.0 nm, the optimized alpha-Ni(OH)(2)/NF self-supporting electrode exhibits excellent electrocatalytic performance for OER, merely requiring low overpotentials of 192 and 240 mV to yield current densities of 10 and 100 mA cm(-2) in 1.0 M KOH, respectively, which surpassed those of all of the reported nickel hydroxide/oxides and the benchmark RuO2. Moreover, alpha-Ni(OH)(2)/NF can drive the high-current density (500-1000 mA cm(-2)) OER at low overpotentials, meeting the requirements of potential industrial applications.

引用

页码：3365 / 3374

页数：10