摘要 |
A solid composite electrolyte membrane for use in a lithium battery is provided which exhibits a conductivity ranging from about 10<SUP>-4 </SUP>S cm<SUP>-1 </SUP>to about 10<SUP>-3 </SUP>S cm<SUP>-1 </SUP>at ambient temperature. The membrane is formed by providing a glass or glass-ceramic powder formed from a mixture of lithium carbonate, alumina, titanium dioxide, and ammonium dihydrogen phosphate. The powder is mixed with a conditioning agent and at least one solvent, followed by the addition of a binder and one or more plasticizers. The resulting slurry is cast into a tape which is then subjected to a binder burn-off and sintering process to form the membrane. The resulting membrane may be a glass-ceramic composite having a porosity ranging from 0 to 50%, or the membrane may be further infiltrated with a polymer to form a water-impermeable polymeric-ceramic composite membrane.
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