Measurement of the electrochemical oxidation of organic electrolytes used in lithium batteries by microelectrode

Minato Egashira, Hideki Takahashi, Shigeto Okada, Jun Ichi Yamaki

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

The electrochemical oxidation of organic electrolytes was investigated using microelectrodes. The electrolytes we used were LiClO4/(EC+DEC) and LiPF6(EC+DEC) which are widely employed in lithium ion batteries. We measured the oxidation current by the potential step method (the potential is maintained until the current becomes constant) at potentials ranging from 4.5 to 5.5 V versus Li/Li+. The current density-potential relationship of the oxidation of 1 M LiClO4/(EC+DEC) electrolyte on the carbon microelectrode shows good reproducibility and roughly fits exponential lines. We obtained a similar relationship regardless of the material and size of the microelectrodes. Therefore, the electrochemical oxidation of organic electrolytes can be compared using this method. The different oxidation behavior of LiPF6 salt and LiClO4 salt electrolyte suggests that the salt anions may initiate the electrolyte oxidation.

Original languageEnglish
Pages (from-to)267-271
Number of pages5
JournalJournal of Power Sources
Volume92
Issue number1-2
DOIs
Publication statusPublished - Jan 1 2001

Fingerprint

Lithium batteries
electrochemical oxidation
lithium batteries
Electrochemical oxidation
Microelectrodes
Electrolytes
electrolytes
Oxidation
oxidation
Salts
salts
Anions
electric batteries
Current density
Negative ions
Carbon
lithium
current density
anions
carbon

All Science Journal Classification (ASJC) codes

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

Cite this

Measurement of the electrochemical oxidation of organic electrolytes used in lithium batteries by microelectrode. / Egashira, Minato; Takahashi, Hideki; Okada, Shigeto; Yamaki, Jun Ichi.

In: Journal of Power Sources, Vol. 92, No. 1-2, 01.01.2001, p. 267-271.

Research output: Contribution to journalArticle

Egashira, Minato ; Takahashi, Hideki ; Okada, Shigeto ; Yamaki, Jun Ichi. / Measurement of the electrochemical oxidation of organic electrolytes used in lithium batteries by microelectrode. In: Journal of Power Sources. 2001 ; Vol. 92, No. 1-2. pp. 267-271.
@article{f6e2d60e67c342029e879caa98271c82,
title = "Measurement of the electrochemical oxidation of organic electrolytes used in lithium batteries by microelectrode",
abstract = "The electrochemical oxidation of organic electrolytes was investigated using microelectrodes. The electrolytes we used were LiClO4/(EC+DEC) and LiPF6(EC+DEC) which are widely employed in lithium ion batteries. We measured the oxidation current by the potential step method (the potential is maintained until the current becomes constant) at potentials ranging from 4.5 to 5.5 V versus Li/Li+. The current density-potential relationship of the oxidation of 1 M LiClO4/(EC+DEC) electrolyte on the carbon microelectrode shows good reproducibility and roughly fits exponential lines. We obtained a similar relationship regardless of the material and size of the microelectrodes. Therefore, the electrochemical oxidation of organic electrolytes can be compared using this method. The different oxidation behavior of LiPF6 salt and LiClO4 salt electrolyte suggests that the salt anions may initiate the electrolyte oxidation.",
author = "Minato Egashira and Hideki Takahashi and Shigeto Okada and Yamaki, {Jun Ichi}",
year = "2001",
month = "1",
day = "1",
doi = "10.1016/S0378-7753(00)00553-X",
language = "English",
volume = "92",
pages = "267--271",
journal = "Journal of Power Sources",
issn = "0378-7753",
publisher = "Elsevier",
number = "1-2",

}

TY - JOUR

T1 - Measurement of the electrochemical oxidation of organic electrolytes used in lithium batteries by microelectrode

AU - Egashira, Minato

AU - Takahashi, Hideki

AU - Okada, Shigeto

AU - Yamaki, Jun Ichi

PY - 2001/1/1

Y1 - 2001/1/1

N2 - The electrochemical oxidation of organic electrolytes was investigated using microelectrodes. The electrolytes we used were LiClO4/(EC+DEC) and LiPF6(EC+DEC) which are widely employed in lithium ion batteries. We measured the oxidation current by the potential step method (the potential is maintained until the current becomes constant) at potentials ranging from 4.5 to 5.5 V versus Li/Li+. The current density-potential relationship of the oxidation of 1 M LiClO4/(EC+DEC) electrolyte on the carbon microelectrode shows good reproducibility and roughly fits exponential lines. We obtained a similar relationship regardless of the material and size of the microelectrodes. Therefore, the electrochemical oxidation of organic electrolytes can be compared using this method. The different oxidation behavior of LiPF6 salt and LiClO4 salt electrolyte suggests that the salt anions may initiate the electrolyte oxidation.

AB - The electrochemical oxidation of organic electrolytes was investigated using microelectrodes. The electrolytes we used were LiClO4/(EC+DEC) and LiPF6(EC+DEC) which are widely employed in lithium ion batteries. We measured the oxidation current by the potential step method (the potential is maintained until the current becomes constant) at potentials ranging from 4.5 to 5.5 V versus Li/Li+. The current density-potential relationship of the oxidation of 1 M LiClO4/(EC+DEC) electrolyte on the carbon microelectrode shows good reproducibility and roughly fits exponential lines. We obtained a similar relationship regardless of the material and size of the microelectrodes. Therefore, the electrochemical oxidation of organic electrolytes can be compared using this method. The different oxidation behavior of LiPF6 salt and LiClO4 salt electrolyte suggests that the salt anions may initiate the electrolyte oxidation.

UR - http://www.scopus.com/inward/record.url?scp=0035196480&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035196480&partnerID=8YFLogxK

U2 - 10.1016/S0378-7753(00)00553-X

DO - 10.1016/S0378-7753(00)00553-X

M3 - Article

AN - SCOPUS:0035196480

VL - 92

SP - 267

EP - 271

JO - Journal of Power Sources

JF - Journal of Power Sources

SN - 0378-7753

IS - 1-2

ER -