| 摘要 |
A battery, of the type having positive and negative terminals (4) insulated from a metal casing (1), has a supplementary electrolyte-impregnated electrode (10) which is in contact with the metal casing (1). This electrode contains an electrochemically active material whose electrochemical potential (with respect to the electrolyte) is in the passivation and stability range of the metal of the casing (1). Preferably, the casing consists of aluminium and the supplementary electrode (10) consists of an aluminium support which is partially covered with active material and which is ultrasonically welded by its bare surface to a free part of the casing (1), the active material being an optionally lithiated metal sulphide having a potential of 2-3.5 V wrt. lithium, e.g. V2O5, LixV2O5, MnO2, LixMnO2, MoS2 or LixMoS2. |
