An electrochemical device comprising at least one substrate (1, 7), at least one electroconductive layer (2, 6) at least one electrochemically active layer (3, 5) capable of reversibly injecting ions, and an electrolyte (4), wherein the electrolyte (4) is a layer or a multilayer stack comprising at least...http://www.google.co.uk/patents/US6791737?utm_source=gb-gplus-sharePatent US6791737 - Electrochemical device
