High temperature secondary batteries

摘要

Lithium aluminium iron sulphide batteries and other high temperature batteries operational efficiency over charge/discharge cycles and also their dimensional stability upon variation in temperature can be improved by ensuring the batteries possess an electrochemical excess of cathodic to anodic material. The addition potassium halide and magnesia to high temperature batteries also improves their properties. Batteries of the invention yield high power/high energy output which is comparable to lead/acid batteries of much larger size and weight.