Patent ID: 6517972
Filing Date: 2003-02-11
Classification: H01G,H01M,Y02E,Y02T

Abstract:
A rechargeable electrical energy storage system comprising in contiguity a positive electrode member, a negative electrode member, and a separator member interposed therebetween containing a fluid electrolyte comprising a pair of ion species of a dissociable salt characterized in that one of said electrode members comprises a first material capable of intercalating the cation of said species in response to the application of an electrical charge of a first polarity, and the other of said electrode members comprises a combination ofa) a second material capable of adsorbing the anion of said species in response to the application of a contemporaneous electrical charge of opposite polarity, and b) a third material capable of yielding said cation species in response to the application of said contemporaneous electrical charge of opposite polarity, said third material being selected from the group consisting of lithiated transition metal oxides, sulfides, phosphates, and fluorides.