Carbon Nanotubes Decorated with CoP Nanocrystals: A Highly Active Non-Noble-Metal Nanohybrid Electrocatalyst for Hydrogen Evolution

被引：975

作者：

Liu, Qian ^{[1
]}

Tian, Jingqi ^{[1
,2
]}

Cui, Wei ^{[1
,2
]}

Jiang, Ping ^{[1
]}

Cheng, Ningyan ^{[1
,2
]}

Asiri, Abdullah M. ^{[3
,4
]}

Sun, Xuping ^{[1
,3
,4
]}

机构：

[1] Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130022, Jilin, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

[3] King Abdulaziz Univ, Dept Chem, Jeddah 21589, Saudi Arabia

[4] King Abdulaziz Univ, Ctr Excellence Adv Mat Res, Jeddah 21589, Saudi Arabia

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2014年 / 53卷 / 26期

基金：

中国国家自然科学基金;

关键词：

carbon nanotubes; cobalt nanocrystals; electrolysis; heterogeneous catalysis; hydrogen evolution reaction; EDGE SITES; NICKEL PHOSPHIDE; MOS2; MOLYBDENUM; CATALYSTS; H-2; NANOWIRES; GRAPHENE; WATER; FE;

D O I：

10.1002/anie.201404161

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The development of effective and inexpensive hydrogen evolution reaction (HER) electrocatalysts for future renewable energy systems is highly desired. The strongly acidic conditions in proton exchange membranes create a need for acid-stable HER catalysts. A nanohybrid that consists of carbon nanotubes decorated with CoP nanocrystals (CoP/CNT) was prepared by the low-temperature phosphidation of a Co3O4/CNT precursor. As a novel non-noble-metal HER catalyst operating in acidic electrolytes, the nanohybrid exhibits an onset overpotential of as low as 40 mV, a Tafel slope of 54 mV dec(-1), an exchange current density of 0.13 mA cm(-2), and a Faradaic efficiency of nearly 100%. This catalyst maintains its catalytic activity for at least 18 hours and only requires overpotentials of 70 and 122 mV to attain current densities of 2 and 10 mA cm(-2), respectively.

引用

页码：6710 / 6714

页数：5

共 74 条

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