摘要 |
Sensitive electrical material, e. g. lithium metal electrode material, protected by non-porous fluidimpermeable flexible material whose compositio can be altered, e. g. by solvent extraction of a salt or polymer therefrom, to render the protective material fluid-permeable. When the material is used as a cell electrode, the protective material composition is preferably altered on contact with liquid electrolyte in the cell, thereby converting the protective material into an electrode separator. The sensitive material can be processed, e. g. rolled into thin strips while protected by the non-porous protective material. |