ELECTROCHEMICAL ENERGY STORAGE OF HIGH SPECIFIC POWER AND ITS PLATE Russian patent published in 2001 - IPC

FIELD: electrical engineering; rechargeable electrochemical energy storages. SUBSTANCE: cathode and anode for high-power energy storage have active member entering in oxidation- reduction reactions with aqueous alkali electrolyte during charge- discharge cycle; this member is made of electron-conducting electric alloy of following composition: M_(1-x-y)O_xH_y, where M for positive plate is made of nickel or nickel-base alloy, M for negative plate is metal of following group: iron, nickel, cobalt, or alloy based on one of metals of this group; x is atomic fraction of oxygen absorbed in electric alloy ranging within 0,01 ≅ x ≅ 0,4, for positive plate x mainly ranges within 0,005 ≅ x ≅ 0,4, y is atomic fraction of hydrogen absorbed in electric alloy ranging within 0,01 ≅ y ≅ 0,4, y for negative plate mainly ranges within 0,05 ≅ y ≅ 0,4, electrolytic alloy functions as current- conducting collector and as active material at a time. Proposed electrochemical energy storages of three alternatives have at least one negative and one positive plates immersed in aqueous alkali electrolyte with separator in-between; separator is, essentially, layer of ion- conducting and electron-nonconducting material. EFFECT: enhanced life due to increasing number of charge/discharge cycles and dispensing with environment-polluting cadmium without reducing specific power and energy. 16 cl, 6 dwg, 3 tbl