7. Lithium-polymer batteries

In a lithium-polymer battery, the negative electrode is a lithium thin film, the positive electrode, a reversible insertion compound, selected from those for "low-voltage" cathode (V ₆ O ₁₃ , LiV ₃ O ₈ , TiS ₂ ) or "high voltage" (LiMn ₂ O ₄ ), the electrolyte, finally, a polymer, such as polyethylene oxide, charged with lithium ions (POE – LiX). If, therefore, the presence of a lithium anode leads to envisage high specific performances, two difficulties are to be expected, the risk of dendrites associated with the lithium electrode and the need to operate at a temperature of...