Issue 5, 2016

The Li–S battery: an investigation of redox shuttle and self-discharge behaviour with LiNO3-containing electrolytes

Abstract

The polysulfide redox shuttle and self-discharge behaviour of lithium–sulfur (Li–S) cells containing the electrolyte additive LiNO3 has been thoroughly explored by a range of electrochemical and surface analysis techniques on simple Li–S (i.e., not specifically optimised to resist self-discharge) and symmetrical Li–Li cells. Despite the relatively effective passivation of the negative electrode by LiNO3, fully charged cells self-discharged a quarter of their capacity within 3 days, although in the short-term cells can be recharged without any noticeable capacity loss. The processes governing the rate and reversibility of self-discharge in these cells have been investigated and explained in terms of the reactions of polysulfides occurring at both electrodes during idle conditions.

Graphical abstract: The Li–S battery: an investigation of redox shuttle and self-discharge behaviour with LiNO3-containing electrolytes

Supplementary files

Article information

Article type
Paper
Submitted
09 Nov 2015
Accepted
12 Dec 2015
First published
15 Dec 2015

RSC Adv., 2016,6, 3632-3641

The Li–S battery: an investigation of redox shuttle and self-discharge behaviour with LiNO3-containing electrolytes

M. J. Lacey, A. Yalamanchili, J. Maibach, C. Tengstedt, K. Edström and D. Brandell, RSC Adv., 2016, 6, 3632 DOI: 10.1039/C5RA23635E

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