Novel low-temperature electrolyte for Li-ion Battery

Yong Huan Ren*, Chun Wei Yang, Bo Rong Wu, Cun Zhong Zhang, Shi Chen, Feng Wu

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

17 Citations (Scopus)

Abstract

In order to overcome the limitation of Li-ion batteries at low temperature, series of electrolytes are prepared. Specially,FEC is chose to work as electrolyte solvent to enhance its poor performance. Electrolytes are composed of EC, PC, EMC and FEC, while VC is added as additive. Electrolytes with different ratio are examined, then the electrolyte with the best conductivity is studied in detail. Its characters are evaluated by CV, EIS and charge/discharge tests et al. The discharge curves of LiCo1/3Ni1/3Mn 1/3O2/Li show that battery with this FEC-based electrolyte at 233K could yield 51% of room temperature capacity. Most obviously, MCMB/Li half cell with this electrolyte could fill 91% of its normal capacity at 233K while batteries barely charge any with traditional electrolyte(LiPF6/EC+DMC(1:1 in volume)). This nice charge behavior won't emerge unless the conductivity could basically meet the demand at 233K. The property of FEC-based electrolyte outweighs commercialized electrolyte as this article confirms.

Original languageEnglish
Title of host publicationApplications of Engineering Materials
Pages1283-1289
Number of pages7
DOIs
Publication statusPublished - 2011
Event2011 International Conference on Advanced Engineering Materials and Technology, AEMT 2011 - Sanya, China
Duration: 29 Jul 201131 Jul 2011

Publication series

NameAdvanced Materials Research
Volume287-290
ISSN (Print)1022-6680

Conference

Conference2011 International Conference on Advanced Engineering Materials and Technology, AEMT 2011
Country/TerritoryChina
CitySanya
Period29/07/1131/07/11

Keywords

  • Electrolyte
  • Fluoroethylene carbonate
  • Li-ion batteries
  • LiCo NiMnO
  • Low temperature

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