Synthesis and X-ray Characterization of Cobalt Phosphide (Co2P) Nanorods for the Oxygen Reduction Reaction

被引：132

作者：

Doan-Nguyen, Vicky V. T. ^{[1
]}

Zhang, Sen ^{[2
]}

Trigg, Edward B. ^{[1
]}

Agarwal, Rahul ^{[1
]}

Li, Jing ^{[3
]}

Su, Dong ^{[3
]}

Winey, Karen I. ^{[1
]}

Murray, Christopher B. ^{[1
,2
]}

机构：

[1] Univ Penn, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA

[2] Univ Penn, Dept Chem, Philadelphia, PA 19104 USA

[3] Brookhaven Natl Lab, Ctr Funct Nanomat, New York, NY 11973 USA

来源：

ACS NANO | 2015年 / 9卷 / 08期

基金：

美国国家科学基金会;

关键词：

cobalt phosphide nanorods; oxygen reduction reaction; electrocatalysis; IN-SITU; ABSORPTION-SPECTROSCOPY; MAGNETIC-PROPERTIES; NICKEL PHOSPHIDE; METAL; NANOPARTICLES; EVOLUTION; ELECTROCATALYSTS; NANOCRYSTALS; NANOWIRES;

D O I：

10.1021/acsnano.5b02191

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Low temperature fuel cells are clean, effective alternative fuel conversion technology. Oxygen reduction reaction (ORR) at the fuel cell cathode has required Pt as the electrocatalyst for high activity and selectivity of the four-electron reaction pathway. Targeting a less expensive, earth abundant alternative, we have developed the synthesis of cobalt phosphide (Co2P) nanorods for ORR. Characterization techniques that include total X-ray scattering and extended X-ray absorption fine structure revealed a deviation of the nanorods from bulk crystal structure with a contraction along the b orthorhombic lattice parameter. The carbon supported nanorods have comparable activity but are remarkably more stable than conventional Pt catalysts for the oxygen reduction reaction in alkaline environments.

引用

页码：8108 / 8115

页数：8

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