Use of a chelate complex with boron as a lithium salt for lithium battery electrolytes
Journal Article
·
· Journal of the Electrochemical Society
- Tokyo Inst. of Polytechnics, Atsugi, Kanagawa (Japan)
- Denso Corp., Kariya, Aichi (Japan)
A chelate complex with boron, lithium bis[2,3-naphthalenediolato(2-)-O,O{prime}]borate was used in lithium battery electrolytes for Li/V{sub 2}O{sub 5} prototype cells. This lithium salt remains a safe and thermally stable compound up to 320 C without melting. A high specific conductivity (4.63 mS/cm) is exhibited in spite of its high viscosity (1.732 cP) in a 0.5 mol/dm{sup 3} electrolyte/ethylene carbonate-1,2-dimethoxyethane (mol ratio 2:3) binary solvent mixture at 25 C. Based on the discharge characteristics of a Li/V{sub 2}O{sub 5} prototype cell, this lithium salt electrolyte resulted in high energy density (460 Wh/kg) at a cutoff potential of 2.5 V vs. Li/Li{sup +}.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 556799
- Journal Information:
- Journal of the Electrochemical Society, Journal Name: Journal of the Electrochemical Society Journal Issue: 9 Vol. 144; ISSN JESOAN; ISSN 0013-4651
- Country of Publication:
- United States
- Language:
- English
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