| 摘要 |
1,158,736. Primary cell/fuel cell hybrid power unit. GENERAL ELECTRIC CO. 29 Dec., 1966 [30 Dec., 1965], No. 58243/66. Heading H1B. A hybrid electrical power unit comprises a first housing containing at least one opening for removably inserting a hydrogen-generating anode and exhausting hydrogen, and an airdepolarized electrode positioned to contact an electrolyte confined by the housing and spaced from the anode, and a second housing for confining the hydrogen, removably sealed to the first housing, and containing an electrodeelectrolyte assembly comprising an electrolyte layer between two electrodes, one of which faces the outside of the housing and serves to reduce oxygen from air electrochemically and the other faces the inside and serves to oxidize hydrogen electrochemically. The first housing may comprise a plurality of cell housings formed of an electrically non-conducting U- shaped element 21 and a porous current collecting element 27 sealed on each side and functioning as an electrolyte-confining wall and air-depolarized electrode 29. The second housing may comprise a single horizontal electrodeelectrolyte assembly (61 in Fig. 2) or a plurality of cell housings formed of an inverted U-shaped insulating element 152 having electrode-electrolyte assemblies 154 mounted on each side. There may be placed between the housings a hydrogen-permeable gas-impermeable membrane (9 in Fig. 2) and a printed circuit connecting the cells of the lower housing in series to external terminals. The air or oxygen electrodes and the hydrogen electrodes may comprise boron carbide, platinum or palladium as electrochemical catalyst, or silver or spinel for the air electrodes; these may be extended with silver or nickel for alkaline electrolytes and may be bonded by a hydrophobic material, e.g. a fluorocarbon polymer, and be coated by a gas-permeable liquid-impermeable layer of such a polymer when a free aqueous electrolyte is used. They may be supported on a porous polymer or a carbon or metal support. The electrolyte layer may be an ion exchange membrane, a capillary matrix or a free aqueous electrolyte in a, frame. The inter-housing barrier may be of foam rubber or a thin layer of hydrophobic polymer. The electrolyte in the first housing may be a solution of an alkali metal or alkaline earth metal halide (for Mg anode) or hydroxide (for Al). The hydrogen-generating anode may be of magnesium or aluminium. When magnesium is used it may be surrounded by a filter of e.g. nylon, polyethylene, polyurethane or polypropylene. |
