Manganese-cobalt mixed oxide film as a bifunctional catalyst for rechargeable zinc-air batteries

被引：60

作者：

Davari, Elaheh ^{[1
]}

Johnson, Aliesha D. ^{[1
]}

Mittal, Akshat ^{[2
]}

Xiong, Ming ^{[1
]}

Ivey, Douglas G. ^{[1
]}

机构：

[1] Univ Alberta, Donadeo Innovat Ctr Engn, Dept Chem & Mat Engn, 9211-116 St, Edmonton, AB T6G 1H9, Canada

[2] Indian Inst Technol, Dept Met & Mat Engn, Roorkee Haridwar Highway, Roorkee 247667, Uttarakhand, India

来源：

ELECTROCHIMICA ACTA | 2016年 / 211卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Mn-Co oxide; non-precious metal catalyst; Zn-air battery; anodic electrodeposition; bifunctional electrocatalyst; OXYGEN REDUCTION REACTION; TRANSITION-METALS; WATER OXIDATION; ELECTROCATALYSTS; NANOPARTICLES; NITROGEN; COMPOSITE; ELECTRODE; SPINELS; MN;

D O I：

10.1016/j.electacta.2016.06.085

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Rechargeable Zn-air batteries (ZABs) are receiving interest as promising energy storage devices owing to their high theoretical energy density. One of the major challenges in developing rechargeable ZABs is the slow kinetics of oxygen reduction and evolution (ORR/OER) on the air electrode during battery discharging and charging. Here, we report on a composite air electrode consisting of a Mn-Co mixed oxide electrocatalyst film on a carbon gas diffusion layer synthesized via anodic electrodeposition. The Mn-Co oxides have a fibrous structure and exhibit high catalytic activity towards both ORR and OER. ZAB test results show that the catalyst reduces the discharge-charge voltage gap and improves the round-trip efficiency in comparison with the baseline Pt-Ru/C catalyst. Furthermore, the catalyst remains stable for repeated cycles. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：735 / 743

页数：9

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