Patent ID: 6165646
Filing Date: 2000-12-26
Classification: H01M,Y02E

Abstract:
A method for charging, a solid-state lithium battery comprising an electrolyte layer comprising mainly a lithium ion conductive solid electrolyte, a positive electrode comprising a lithium transition metal oxide capable of inducing reversible electrochemical insertion and extraction reactions of lithium ions into or from lithium ion sites in a crystal structure, and a negative electrode comprising a material showing discontinuous change of potential consequent to insertion and extraction reactions of lithium ions into or from the lithium ion sites in the crystal structure, wherein an amount of the lithium ion inserted, until a potential of the material showing discontinous change of potential consequent to the insertion and extraction reactions of lithium ions discontinuously changes, is equal to or less than a maximum amount of an extracted amount of the lithium ions which is extracted by the reversible insertion and extraction reactions of the lithium transition metal oxide, said method comprising the step of:charging the battery showing discontinuous change of voltage from the voltage V.sub.1 to the voltage V.sub.2 relative to a charged quantity of electricity, at a voltage same as or less than the voltage V.sub.2.