Electrolyte properties of 1-alkyl-2,3,5-trimethylpyrazolium cation-based room-temperature ionic liquids for lithium secondary batteries

Shiro Seki, Takeshi Kobayashi, Nobuyuki Serizawa, Yo Kobayashi, Katsuhito Takei, Hajime Miyashiro, Kikuko Hayamizu, Seiji Tsuzuki, Takushi Mitsugi, Yasuhiro Umebayashi, Masayoshi Watanabe

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

The physicochemical and electrochemical properties of three 1-alkyl-2,3,5-trimethylpyrazolium cation-based room-temperature ionic liquids with various alkyl chain lengths were investigated. The temperature dependences of density, viscosity, and ionic conductivity were obtained by precise measurements. Electrolyte properties of these room-temperature ionic liquids were also examined from the viewpoint of their uses in lithium secondary batteries ([LiCoO2 positive electrode|electrolyte|lithium metal negative electrode]). It was found that the alkyl chain length affects the charge-discharge performances of cells.

Original languageEnglish
Pages (from-to)6207-6211
Number of pages5
JournalJournal of Power Sources
Volume195
Issue number18
DOIs
Publication statusPublished - 2010 Sep 15
Externally publishedYes

    Fingerprint

Keywords

  • Electrode
  • Interface
  • Lithium secondary battery
  • Physicochemical properties
  • Room-temperature ionic liquid

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

Cite this

Seki, S., Kobayashi, T., Serizawa, N., Kobayashi, Y., Takei, K., Miyashiro, H., Hayamizu, K., Tsuzuki, S., Mitsugi, T., Umebayashi, Y., & Watanabe, M. (2010). Electrolyte properties of 1-alkyl-2,3,5-trimethylpyrazolium cation-based room-temperature ionic liquids for lithium secondary batteries. Journal of Power Sources, 195(18), 6207-6211. https://doi.org/10.1016/j.jpowsour.2009.10.081