Mesoporous α-MnO2/Pd catalyst air electrode for rechargeable lithium-air battery

被引：176

作者：

Thapa, Arjun Kumar ^{[1
]}

Ishihara, Tatsumi ^{[1
]}

机构：

[1] Kyushu Univ, Fac Sci & Engn, Dept Appl Chem, Nishi Ku, Fukuoka 8190395, Japan

来源：

JOURNAL OF POWER SOURCES | 2011年 / 196卷 / 16期

关键词：

Lithium/air battery; Mesoporous alpha-MnO2/Pd; ex situ XRD; Air electrode;

D O I：

10.1016/j.jpowsour.2010.09.112

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：

Rechargeable lithium-air battery is studied using Pd/mesoporous alpha-MnO2 air composite electrode. In the present work, we have studied the preparation and electrochemical performance of ordered mesoporous alpha-MnO2 as a cathode catalyst for rechargeable Li-air batteries. alpha-MnO2 was prepared by reduction of KMnO4 solution in acidic aqueous solution followed by successive proton and alkali-ion exchange method. alpha-MnO2 with high surface area of 33-133.0 m(2) g(-1) was successively synthesized and used as an electrode catalyst for Li-air battery. It was found that the mixture of Pd and mesoporous alpha-MnO2 electrode shows the high activity to oxidation and reduction of Li to form Li2O2 or Li2O. Application of Pd/mesoporous alpha-MnO2, which is mixed with teflonized acetylene binder (TAB), for air electrode is effective for decreasing the charge potential and also improved the energy efficiency as well as cyclability. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：7016 / 7020

页数：5

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