Patent ID: 8475963

Claim:
A lithium microbattery comprising a stack of solid thin layers on a substrate, said stack successively comprising, starting from the substrate, a first electrode, a solid electrolyte, and a second electrode/current collector assembly formed by at least one thin layer, wherein: a first surface and a second surface of the electrolyte is in contact respectively with a main surface of the first electrode and a main surface of the second electrode/current collector assembly, said main surfaces facing one another; dimensions of the main surface of the first electrode are smaller than dimensions of the main surface of said assembly; dimensions of the first surface of the solid electrolyte are smaller than dimensions of the second surface of the solid electrolyte; the solid electrolyte is not in contact with the substrate; and the solid electrolyte has a trapezoid shape, in cross-section, with a small base and a large base respectively constituting the first surface and the second surface of the electrolyte.