期刊
ELECTROCHEMISTRY COMMUNICATIONS
卷 26, 期 -, 页码 74-76出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2012.10.009
关键词
Li-air; Viologen; Redox shuttle; Oxygen reduction; Catalysis; Ionic liquid
资金
- EU [NMP3-SL-2011-265971]
A novel design of the non-aqueous lithium air cell is presented with a demonstration of a new reaction concept, involving a soluble redox shuttle to catalyse oxygen reduction. In principle, this can relieve the requirement for fast diffusion of molecular oxygen from the air interface to the positive electrode. To demonstrate this concept, ethyl viologen ditriflate was dissolved in BMPTFSI, reduced at a carbon electrode and regenerated by aspiration with oxygen. Useful shuttle behaviour, confirmed by several reduction-oxidation cycles, was observed in the case where the electrolyte contained at least 0.3 M lithium salt. The beneficial effect of the salt was attributed to its critical role in converting superoxide, which would otherwise destroy the shuttle, into the more desirable product of oxygen reduction, lithium peroxide. (C) 2012 Elsevier B.V. All rights reserved.
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