Abstract
The dependence of Li/Cu 2V 2O 7 cell characteristics such as rate performance and cycle life on electrolytic properties is investigated in several organic electrolytes. The electrolyte dependence of rate capability in Li/Cu 2V 2O 7 system is mainly determined by cation diffusion in the pore electrolyte phase. It is suggested that rate performance is improved by selecting an electrolyte with higher limiting molar conductivity for Li + ions. Cycle lives of cells with various electrolytes are shorter than the value expected from the Li half-cell data. The reason for this phenomenon is considered to be inactivity of the lithium electrode due to copper ions being dissolved upon charging, ie increased overvoltage, decreased lithium cycling efficiency and the possibility of causing internal soft-shorts.
Published Version
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