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 language | English |
|---|---|
| Pages (from-to) | 267-271 |
| Number of pages | 5 |
| Journal | Journal of Power Sources |
| Volume | 92 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - Jan 1 2001 |
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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 journal › Article
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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 -