Work

Oxidative Electrolyte Solvent Degradation in Lithium‐Ion Batteries: An In Situ Differential Electrochemical Mass Spectrometry Investigation

Year: 1999

Type: article

Abstract: Differential electrochemical mass spectrometry (DEMS) was used to study the electrochemical decomposition of organic carbonate electrolyte solutions at practical lithium metal oxide composite electrodes used in lithium‐ion batteries. For propylene carbonate (PC), evolution was detected at , and composite electrodes. The starting point of gas evolution was 4.2 V vs. at , whereas at and , evolution was observed only above 4.8 V vs. . In addition, various other volatile electrolyte decomposition products of PC were detected when using , , and carbon black electrodes. In ethylene carbonate/dimethylcarbonate, evolution was detected only at electrodes, again starting at about 4.2 V vs. . © 1999 The Electrochemical Society. All rights reserved.

Source: Journal of The Electrochemical Society

DOI: 10.1149/1.1391829

Authors: Roman Imhof, Petr Novák

Institution: Paul Scherrer Institute

Language: English

Topic: Advancements in Battery Materials

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: bronze

Funders: Paul Scherrer Institut, Bundesamt für Energie