CoS2xSe2(1-x) nanowire array: an efficient ternary electrocatalyst for the hydrogen evolution reaction

被引：117

作者：

Liu, Kaili ^{[1
,2
,3
]}

Wang, Fengmei ^{[1
,2
]}

Xu, Kai ^{[1
,2
]}

Shifa, Tofik Ahmed ^{[1
,2
]}

Cheng, Zhongzhou ^{[1
]}

Zhan, Xueying ^{[1
]}

He, Jun ^{[1
]}

机构：

[1] Natl Ctr Nanosci & Technol, CAS Key Lab Nanosyst & Hierarch Fabricat, Beijing 100190, Peoples R China

[2] Univ Chinese Acad Sci, 19AYuquan Rd, Beijing 100049, Peoples R China

[3] Sino Danish Ctr Educ & Res, Beijing 100190, Peoples R China

来源：

NANOSCALE | 2016年 / 8卷 / 08期

基金：

北京市自然科学基金; 中国国家自然科学基金;

关键词：

HYDROTHERMAL SYNTHESIS; CATALYTIC-ACTIVITY; TUNGSTEN CARBIDE; WS2; NANOSHEETS; NANOPARTICLES; GRAPHENE; OXIDE; COSE2;

D O I：

10.1039/c5nr07735d

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Binary transition metal dichalcogenides (TMDs) have emerged as efficient catalysts for the hydrogen evolution reaction (HER). Co-based TMDs, such as CoS2 and CoSe2, demonstrate promising HER performance due to their intrinsic metallic nature. Recently, the ternary electrocatalysts were widely acknowledged for their prominent efficiency as compared to their binary counterparts due to increased active sites caused by the incorporation of different atoms. Herein, we successfully grew the ternary CoS2xSe2(1-x) (x = 0.67) nanowires (NWs) on a flexible carbon fiber. As a superior electrocatalyst, ternary CoS2xSe2(1-x) NWs arrays demonstrated excellent catalytic activity for electrochemical hydrogen evolution in acidic media, achieving current densities of 10 mA cm(-2) and 100 mA cm(-2) at overpotentials of 129.5 mV and 174 mV, respectively. Notably, the high stability of CoS2xSe2(1-x) NWs suggested that the ternary CoS2xSe2(1-x) NWs are a scalable catalyst for electrochemical hydrogen evolution.

引用

页码：4699 / 4704

页数：6

共 40 条

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