期刊
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
卷 161, 期 6, 页码 A835-A840出版社
ELECTROCHEMICAL SOC INC
DOI: 10.1149/2.083405jes
关键词
-
资金
- NSF [CMMI 1031208]
- DOE
- DOE, Office of Basic Energy Sciences [DE-AC02-98CH10886]
MnO2-Zn alkaline batteries are one of the most common modern forms of primary battery, due to their relatively high energy density and low cost per kilowatt-hour. Additionally, unlike many other types of primary battery, alkaline cells can theoretically be recharged. Their low cost per kilowatt-hour makes them potentially ideal for applications such as sustainable energy storage or peak demand shaving. However, a phase transformation that occurs in MnO2 after reduction by more than one electron converts it into the electrochemically inactive Mn3O4 phase. This limits the total depth of discharge of the cell significantly. We report the synthesis of a novel electrode material, manganese-doped witherite, for rechargeable alkaline batteries produced by a simple hydrothermal process. The material has been studied via X-ray diffraction and electroanalytical techniques. We show that unaltered witherite has poor electrochemical properties, and that this new material has high capacity and rate capability, even under deep discharge conditions, superior to conventional manganese dioxide. (C) The Author(s) 2014. Published by ECS.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据