A novel bifunctional oxygen GDE for alkaline secondary batteries

被引：33

作者：

Li, Xiaohong ^{[1
]}

Pletcher, Derek ^{[2
]}

Russell, Andrea E. ^{[2
]}

Walsh, Frank C. ^{[1
]}

Wills, Richard G. A. ^{[1
]}

Gorman, Scott F. ^{[1
]}

Price, Stephen W. T. ^{[2
]}

Thompson, Stephen J. ^{[2
]}

机构：

[1] Univ Southampton, Energy Technol Grp, Fac Engn & Environm, Southampton SO17 1BJ, Hants, England

[2] Univ Southampton, Sch Chem, Fac Nat & Environm Sci, Southampton SO17 1BJ, Hants, England

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2013年 / 34卷

基金：

英国工程与自然科学研究理事会;

关键词：

Bifunctional electrocatalyst; Oxygen evolution/reduction; Gas diffusion electrode (GDE); METAL-AIR BATTERIES; ELECTRODES; EVOLUTION; NICO2O4;

D O I：

10.1016/j.elecom.2013.06.020

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

This paper describes a novel procedure for the fabrication of a gas diffusion electrode (GDE) suitable for use as a bifunctional oxygen electrode in alkaline secondary batteries. The electrode is fabricated by pre-forming a PTFE-bonded nickel powder layer on a nickel foam substrate followed by deposition of NiCo2O4 spinel electrocatalyst by dip coating in a nitrate solution and thermal decomposition. The carbon-free composition avoids concerns over carbon corrosion at the potentials for oxygen evolution. The electrode shows acceptable overpotentials for both oxygen evolution and oxygen reduction at current densities up to 100 mA cm(-2). Stable performance during>100 successive, 1 h oxygen reduction/evolution cycles at a current density of 20 mA cm(-2) in 8 M NaOH at 333 K was achieved. (C) 2013 The Authors. Published by Elsevier B.V. All rights reserved.

引用

页码：228 / 230

页数：3

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