LithiumOxygen Electrochemistry in Non‐Aqueous Solutions. Issue 5 (6th February 2015)

• Record Type: Journal Article
• Authors: Sharon, Daniel; Hirshberg, Daniel; Afri, Michal; Garsuch, Arnd; Frimer, Aryeh A.; Aurbach, Doron
• Is Part Of: Israel journal of chemistry. Volume 55:Issue 5(2015)
• Page Start: 508
• Page End: 520
• Publication Date: 2015-02-06
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1002/ijch.201400135
• Languages: English
• ISSNs: 0021-2148

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Pairing lithium and oxygen in aprotic solvents can theoretically lead to one of the most promising electrochemical cells available. If successful, this system could compete with technologies such as the internal combustion engine and provide an energy density that can accommodate electric vehicle demands. However, there are many problems that have inhibited this technology from becoming realistic. One of the main reasons is capacity fading after only a few cycles, which is caused by the instability of electrolyte solutions in the presence of reduced oxygen species like O₂^.− and O₂²⁻. In recent years, using various analytical tools, researchers have been able to isolate the breakdown products arising from the reactions occurring between the aprotic solvent and the reduced oxygen species. Nevertheless, no solvents have yet been found that are fully stable throughout the reduction and oxidation processes. However, an understanding of these decomposition mechanisms can help us in designing new systems that are more stable toward the aggressive conditions taking place in LiO₂ cell operation. This review will include analytical studies on the most widely used solvents in current LiO₂ research.</p> </abstract>