Lithium accumulator comprising a current collector-electrode assembly with expansion cavities and method of manufacturing same

摘要

The battery has an electrolyte, and a stack including an electrode (3) e.g. negative electrode, that has a continuous thin layer covering a free end of lateral walls of a current collector (2). The electrolyte is constituted by an electrolytic membrane in the form of a solid thin layer arranged on the stack. Expansion cavities are formed in hollow zones (4) of the current collector and include a wall formed by the continuous thin layer of the electrode. An independent claim is also included for a method for fabricating a lithium-ion battery.