Nanoscale nickel oxide/nickel heterostructures for active hydrogen evolution electrocatalysis

被引：1528

作者：

Gong, Ming ^{[1
]}

Zhou, Wu ^{[2
]}

Tsai, Mon-Che ^{[3
]}

Zhou, Jigang ^{[4
]}

Guan, Mingyun ^{[1
]}

Lin, Meng-Chang ^{[1
]}

Zhang, Bo ^{[1
]}

Hu, Yongfeng ^{[4
]}

Wang, Di-Yan ^{[1
]}

Yang, Jiang ^{[1
]}

Pennycook, Stephen J. ^{[5
]}

Hwang, Bing-Joe ^{[3
]}

Dai, Hongjie ^{[1
]}

机构：

[1] Stanford Univ, Dept Chem, Stanford, CA 94305 USA

[2] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA

[3] Natl Taiwan Univ Sci & Technol, Dept Chem Engn, Taipei 10607, Taiwan

[4] Canadian Light Source Inc, Saskatoon, SK S7N 0X4, Canada

[5] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA

来源：

NATURE COMMUNICATIONS | 2014年 / 5卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

NI; OXIDATION; ELECTRODE; KINETICS; ENERGY;

D O I：

10.1038/ncomms5695

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Active, stable and cost-effective electrocatalysts are a key to water splitting for hydrogen production through electrolysis or photoelectrochemistry. Here we report nanoscale nickel oxide/nickel heterostructures formed on carbon nanotube sidewalls as highly effective electrocatalysts for hydrogen evolution reaction with activity similar to platinum. Partially reduced nickel interfaced with nickel oxide results from thermal decomposition of nickel hydroxide precursors bonded to carbon nanotube sidewalls. The metal ion-carbon nanotube interactions impede complete reduction and Ostwald ripening of nickel species into the less hydrogen evolution reaction active pure nickel phase. A water electrolyzer that achieves similar to 20 mA cm(-2) at a voltage of 1.5V, and which may be operated by a single-cell alkaline battery, is fabricated using cheap, non-precious metal-based electrocatalysts.

引用

页数：6

共 28 条

[21] Correlating the hydrogen evolution reaction activity in alkaline electrolytes with the hydrogen binding energy on monometallic surfaces [J].