Lithium-ion cells with aqueous electrolytes
- Simon Fraser Univ., Burnaby, British Columbia (Canada). Dept. of Physics
The electrochemical intercalation of lithium can occur in aqueous electrolytes provided that the host material, the Li{sup +} ion concentration and the pH, are carefully selected. Therefore, rechargeable cells with aqueous electrolytes based on the intercalation of lithium in both electrodes can be made. Here the authors describe some examples of these cells including Li{sub 1{minus}x}Mn{sub 2}O{sub 4}/Li{sub 1+x}Mn{sub 2}O{sub 4}, Li{sub 1{minus}x}Mn{sub 2}O{sub 4}/{gamma}-Li{sub 0.36}MnO{sub 2}, and LiMn{sub 2}O{sub 4}/VO{sub 2}(B) using several aqueous electrolytes. The voltage vs. charge relation for these aqueous cells predicted from the difference of the voltages of Li/LiMn{sub 2}O{sub 4}, Li/{gamma}-Li{sub 0.36}MnO{sub 2}, and Li/VO{sub 2}(B) nonaqueous cells is in excellent agreement with experiment, proving that lithium intercalation is occurring in the cells with aqueous electrolytes. The cells have poor cycle life (approximately 25 cycles) for reasons that are not yet understood.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 82902
- Journal Information:
- Journal of the Electrochemical Society, Journal Name: Journal of the Electrochemical Society Journal Issue: 6 Vol. 142; ISSN 0013-4651; ISSN JESOAN
- Country of Publication:
- United States
- Language:
- English
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