An approach of evaluating the effect of vinylene carbonate additive on graphite anode for lithium ion battery at elevated temperature

NCUIR > Engineering College > Department of Chemical and Materials Engineering > journal & Dissertation > Item 987654321/101742

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/101742

Title:	An approach of evaluating the effect of vinylene carbonate additive on graphite anode for lithium ion battery at elevated temperature
Authors:	劉奕宏;Liu, Yi-Hung;Takeda, Sahori;Kaneko, Ikue;Yoshitake, Hideya;Yanagida, Masahiro;Saito, Yuria;Sakai, Tetsuo
Contributors:	工學院化學工程與材料工程學系
Keywords:	DART-MS;Elevated temperature;Graphite;Lithium ion battery;Vinylene carbonate
Date:	2015-12-01
Issue Date:	2026-04-21 14:42:26 (UTC+8)
Publisher:	Elsevier Inc.;Elsevier B.V
Abstract:	摘要： An approach is proposed to evaluate the VC effect in a LiFePO4/graphite cell at 60°C through liquid chromatography mass spectrometry (LC-MS) together with direct analysis in real time mass spectrometry (DART-MS). The LC-MS result shows that VC can effectively suppress the formation of phosphate esters as well as carbonate oligomers during the electrochemical cycling. It is also known from DART-MS analysis that VC assists the formation of thermally resistant oligomeric phosphate ester layer on the graphite surface, storing more solvent EC inside the layer. On the other hand, no compounds are observed on the LiFePO4 cathode surface. The formation of the denser oligomeric phosphate ester layer is found to be the reason for the improved cycle stability of the cell cycled at elevated temperature. [Display omitted] •VC effect on graphite anode cycled at 60°C is evaluated using LC-MS and DART-MS.•VC suppresses the formation of phosphate esters and carbonate oligomers.•VC assists the formation of oligomeric phosphate esters on the graphite surface.•The contribution of VC to the polymerization on the graphite surface is clarified. 出版者： Elsevier B.V 出版日期： 2015-12-01 出處： Electrochemistry Communications, 2015-12, Vol.61, p.70-73 資源來源： ScienceDirect - Freedom Collection 版權： 2015 Elsevier B.V. 識別號： ISSN: 1388-2481 識別號： ISSN: 1873-1902 識別號： EISSN: 1873-1902 識別號： DOI: 10.1016/j.elecom.2015.10.008
Appears in Collections:	[Department of Chemical and Materials Engineering] journal & Dissertation

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