A comparative study of nanostructured α and δ MnO2 for lithium oxygen battery application

被引：45
|
作者：
Zahoor, Awan [1 ]
Jang, Ho Saeng [2 ]
Jeong, Jeong Sook [2 ]
Christy, Maria [2 ]
Hwang, Yun Ju [2 ]
Nahm, Kee Suk [1 ,2 ]
机构：
[1] Chonbuk Natl Univ, Dept Semicond & Chem Engn, Jeonju 561756, South Korea
[2] Chonbuk Natl Univ, R&D Educ Ctr Fuel Cell Mat & Syst, Jeonju 561756, South Korea
来源：
RSC ADVANCES | 2014年 / 4卷 / 18期
基金：
新加坡国家研究基金会;
关键词：
AIR BATTERIES; LI-AIR; HYDROTHERMAL SYNTHESIS; CATALYST; REDUCTION;
D O I：
10.1039/c3ra47659f
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
alpha- and delta-MnO2 nanomaterials with different morphology like urchins and flowers are successfully synthesized by a low temperature hydrothermal synthesis. The prepared nanostructures were applied as electrocatalysts for air cathodes in Li air batteries. The synthesized materials possess high electrocatalytic activity and the MnO2 catalysed electrodes doubled the initial cycling capacity of the Li air cells without any catalysts. We also observed reduced over potential and upon cycling with limited capacity, a very stable performance was obtained.
引用
收藏
页码：8973 / 8977
页数：5
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