Strained W(SexS1-x)2 Nanoporous Films for Highly Efficient Hydrogen Evolution

被引：68

作者：

Liang, Kun ^{[1
]}

Yan, Yong ^{[1
,5
]}

Guo, Limin ^{[1
]}

Marcus, Kyle ^{[1
,2
]}

Li, Zhao ^{[2
]}

Zhou, Le ^{[2
]}

Li, Yilun ^{[3
]}

Ye, Ruquan ^{[3
]}

Orlovskaya, Nina ^{[4
]}

Sohn, Yong-Ho ^{[2
]}

Yang, Yang ^{[1
,2
]}

机构：

[1] Univ Cent Florida, NanoSci Technol Ctr, Orlando, FL 32826 USA

[2] Univ Cent Florida, Dept Mat Sci & Engn, Orlando, FL 32826 USA

[3] Rice Univ, Dept Chem, 6100 Main St, Houston, TX 77005 USA

[4] Univ Cent Florida, Dept Mech & Aeronaut Engn, Orlando, FL 32826 USA

[5] Nanjing Univ Sci & Technol, Dept Appl Phys, Nanjing 210094, Jiangsu, Peoples R China

来源：

ACS ENERGY LETTERS | 2017年 / 2卷 / 06期

关键词：

ELECTROCHEMICAL H-2 EVOLUTION; RESIDUAL-STRESS; MOS2; WSE2; HETEROSTRUCTURES; GRAPHENE; CATALYST; WS2; NANOTUBES; OXIDATION;

D O I：

10.1021/acsenergylett.7b00326

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：

A W(SexS1-x)(2) nanoporous architecture (NPA) was developed by facile anodic and chemical vapor deposition treatments. The ternary W(SexS1-x)(2) NPA offers significant advantages toward high-efficiency hydrogen generation: (i) Nanoporous morphology provides more electrochemically active sites to split water. (ii) Lattice mismatch and disordering in the mix-phased W(SexS1-x)(2) film introduce more defects to enhance the catalytic activity. (iii) Conducting 1T phase formed in the strained W(SexS1-x)(2) facilitates the electron transfer during catalytic reactions. Therefore, an onset overpotential of 45 mV and a Tafel slope of 59 mV dec(-1) were achieved using the as-prepared W(SexS1-x)(2) NPA.

引用

页码：1315 / 1320

页数：6

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