Charge/discharge performances of glyme-lithium salt equimolar complex electrolyte for lithium secondary batteries

Shiro Seki, Nobuyuki Serizawa, Katsuhito Takei, Kaoru Dokko, Masayoshi Watanabe

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The electrochemical and battery performances of a CH3-O-(C 2H4O)3-CH3/LiN(SO2CF 3)2 1:1 equimolar complex electrolyte were evaluated using [Li metal|Li metal], [LiFePO4|Li metal], and [LiNi 1/3Mn1/3Co1/3O2|Li metal] cells. A relatively favorable surface was formed at the Li metal/electrolyte interface revealed by observation of the storage time dependence of the electrochemical impedance spectroscopy. A 3V-class [LiFePO4|Li metal] cell exhibited favorable capacity retention with little degradation after 600 cycles (2.5-4.0 V). A 4V-class [LiNi1/3Mn1/3Co1/3O 2|Li metal] cell also exhibited good capacity retention of approximately 60% of the initial discharge capacity after 400 cycles (2.7-4.2 V), while the capacity retention decreased markedly upon increasing the upper charge cutoff voltage above 4.4 V.

Original languageEnglish
Pages (from-to)323-327
Number of pages5
JournalJournal of Power Sources
Volume243
DOIs
Publication statusPublished - 2013
Externally publishedYes

Fingerprint

storage batteries
Secondary batteries
lithium batteries
Lithium
Electrolytes
Salts
lithium
Metals
electrolytes
salts
metals
cells
cycles
Electrochemical impedance spectroscopy
time dependence
electric batteries
cut-off
impedance
degradation
Degradation

Keywords

  • Charge/discharge
  • Glyme
  • Lithium salt
  • Long cycle life
  • Safety electrolyte

ASJC Scopus subject areas

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

Cite this

Charge/discharge performances of glyme-lithium salt equimolar complex electrolyte for lithium secondary batteries. / Seki, Shiro; Serizawa, Nobuyuki; Takei, Katsuhito; Dokko, Kaoru; Watanabe, Masayoshi.

In: Journal of Power Sources, Vol. 243, 2013, p. 323-327.

Research output: Contribution to journalArticle

Seki, Shiro ; Serizawa, Nobuyuki ; Takei, Katsuhito ; Dokko, Kaoru ; Watanabe, Masayoshi. / Charge/discharge performances of glyme-lithium salt equimolar complex electrolyte for lithium secondary batteries. In: Journal of Power Sources. 2013 ; Vol. 243. pp. 323-327.
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