Platinum-nickel hydroxide nanocomposites for electrocatalytic reduction of water

被引：119

作者：

Wang, Lei ^{[1
,2
,3
]}

Zhu, Yihan ^{[4
]}

Zeng, Zhenhua ^{[5
]}

Lin, Chong ^{[1
,2
]}

Giroux, Michael ^{[3
]}

Jiang, Lin ^{[6
,7
]}

Han, Yu ^{[4
]}

Greeley, Jeffrey ^{[5
]}

Wang, Chao ^{[3
]}

Jin, Jian ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Nanobion Div, Collaborat Innovat Ctr Suzhou Nano Sci & Technol, Suzhou Inst Nanotech & Nanobion, Suzhou 215123, Jiangsu, Peoples R China

[2] Chinese Acad Sci, I Lab, Collaborat Innovat Ctr Suzhou Nano Sci & Technol, Suzhou Inst Nanotech & Nanobion, Suzhou 215123, Jiangsu, Peoples R China

[3] Johns Hopkins Univ, Dept Chem & Biomol Engn, Baltimore, MD 21218 USA

[4] King Abdullah Univ Sci & Technol, Phys Sci & Engn Div, Adv Membranes & Porous Mat Ctr, Thuwal 239556900, Saudi Arabia

[5] Purdue Univ, Sch Chem Engn, W Lafayette, IN 47907 USA

[6] Soochow Univ, Inst Funct Nano & Soft Mat FUNSON, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Suzhou 215123, Jiangsu, Peoples R China

[7] Soochow Univ, Collaborat Innovat Ctr Suzhou Nano Sci & Technol, Suzhou 215123, Jiangsu, Peoples R China

来源：

NANO ENERGY | 2017年 / 31卷

基金：

中国国家自然科学基金; 美国国家科学基金会;

关键词：

Platinum-nickel hydroxide nanocomposites; Hydrogen evolution reaction; Water electrolysis; Two-dimenstional nickel hydroxide nanosheets; HYDROGEN EVOLUTION REACTION; NANOPARTICLES; NANOSHEETS; OXIDATION;

D O I：

10.1016/j.nanoen.2016.11.048

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：

Water electrolysis represents a promising solution for storage of renewable but intermittent electrical energy in hydrogen molecules. This technology is however challenged by the lack of efficient electrocatalysts for the hydrogen and oxygen evolution reactions. Here we report on the synthesis of platinum-nickel hydroxide nanocomposites and their electrocatalytic applications for water reduction. An in situ reduction strategy taking advantage of the Ni(H)/Ni(III) redox has been developed to enable and regulate the overgrowth of Pt nanocrystals on single-layer Ni(OH)(2) nanosheets. The obtained nanocomposites (denoted as Pt@2D-Ni(OH)(2)) exhibit an improvement factor of 5 in catalytic activity and a reduction of up to 130 mV in overpotential compared to Pt for the hydrogen evolution reaction (HER). A combination of electron microscopy/spectroscopy characterizations, electrochemical studies and density function theory calculations was employed to uncover the structures of the metal-hydroxide interface and understand the mechanisms of catalytic enhancement.

引用

页码：456 / 461

页数：6

共 27 条

[1] Potential importance of hydrogen as a future solution to environmental and transportation problems [J].