Synthesis and characterization of novel high-performance composite electrocatalysts for the oxygen evolution in solid polymer electrolyte (SPE) water electrolysis

被引：21

作者：

Xu, Chunbao ^{[1
]}

Ma, Lirong ^{[1
]}

Li, Jinlai ^{[1
]}

Zhao, Wei ^{[1
]}

Gan, Zhongxue ^{[1
]}

机构：

[1] ENN Grp Co Ltd, State Key Lab Coal Based Low Carbon Energy, Langfang 065001, Hebei, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2012年 / 37卷 / 04期

关键词：

Composite electrocatalysts; Oxygen evolution; Heat treatment; Water electrolysis; Solid polymer electrolyte; ENERGY-STORAGE; HYDROGEN-PRODUCTION; PEM ELECTROLYSIS; OXIDE; SYSTEMS; CATALYST; SURFACE; ACID; SCALE; POWER;

D O I：

10.1016/j.ijhydene.2011.04.031

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：

Novel Ru0.3Ir0.7O2/Pt-0.15 composite electrocatalysts for the oxygen evolution in solid polymer electrolyte (SPE) water electrolysis were prepared by a two-step method. The intermediate Pt black with or without heat treatment (the final samples marked as C-1 and C-2 respectively) was firstly synthesized by a conventional reduction method with ultrasonic dispersion. The composite electrocatalysts were then prepared by impregnation-reduction method with ultrasonic dispersion followed by fusion treatment. The influence of heat treatment of intermediate Pt black on the properties of the composites was explored. The as-prepared composites were characterized by XRD, BET, SEM, EDX, CV and LP. The catalytic performance of the as-prepared electrocatalysts has also been investigated in a 20 cm(2) SPE electrolytic cell using Nafion (R) 117 as an electrolyte with the loading of noble metals of 1.8 mg cm(-2) at anode and 0.3 mg cm(-2) at cathode. It shows that the catalytic performance of samples C-1 and C-2 is obviously higher than that of commercial PtIrO2 electrocatalyst and the catalytic activity of C-1 electrocatalyst for the oxygen evolution is evidently higher than that of C-2 electrocatalyst in the whole range of cell voltage. The cell voltage was only 1.76 V and 1.90 V when the current density is 1.0 A cm(-2) and 1.5 A cm(-2) respectively using sample C-1 as anode electrocatalyst. Copyright (C) 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：2985 / 2992

页数：8

共 49 条

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