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    • 1. 发明授权
    • Rechargeable electrochemical cell
    • 可充电电池
    • US06730441B1
    • 2004-05-04
    • US09926768
    • 2001-12-18
    • Günther HambitzerBernd KreidlerVolker DögeUlrike DörflingerKlaus Schorb
    • Günther HambitzerBernd KreidlerVolker DögeUlrike DörflingerKlaus Schorb
    • H01M1036
    • H01M10/365H01M4/48H01M4/525H01M6/14H01M10/0564
    • Rechargeable electrochemical cell, with a negative electrode, which in charged state contains an active metal selected from the group of the alkaline metals, the alkaline-earth metals and the metals of the second subgroup of the periodic table of elements; an electrolyte solution based on sulfur dioxide; and a positive electrode containing the active metal, from where ions come out into the electrolyte solution during the charging process. A self discharge reaction takes place at the negative electrode, for which the sulfur dioxide of the an electrolyte solution reacts with the active metal of the negative electrode to form a poorly soluble compound. According to the invention, the electrochemical charge quantity of the sulfur dioxide in the cell, calculated with one faraday per mole sulfur dioxide, is smaller than the charge amount of the active metal which can be theoretically electrochemically accumulated in the positive electrode.
    • 具有负电极的可充电电化学电池,其在带电状态下含有选自元素周期表第二亚组中的碱金属,碱土金属和金属的活性金属; 基于二氧化硫的电解质溶液; 以及含有活性金属的正极,在充电过程中离子从其中离子进入电解质溶液。在负极处发生自放电反应,电解质溶液的二氧化硫与活性金属的活性金属反应 负极形成难溶的化合物。 根据本发明,用一法拉第计每摩尔二氧化硫计算的电池中二氧化硫的电化学充电量小于可理论上电化学积累在正电极中的活性金属的电荷量。