| 摘要 |
A battery cell is described that has an anode made of an alkali metal or alkali metal alloy, an alkali metal conductive membrane, and a cathode compartment that houses a hydrogen evolving cathode and a catholyte. The catholyte has dissolved salt comprising cations of the alkali metal. The battery also includes a zone where hydrogen may vent from the catholyte and a zone where water may transport into the catholyte. The zone where water may transport into the catholyte restricts the transport of ions. The battery may be operated (1) in freshwater where there is low ion-conductivity and (2) in seawater where there is a quantity of cations (such as sodium ions) that are incompatible with the alkali metal conductive membrane. The battery is designed such that the alkali metal conductive membrane is protected from cations that operate to foul the alkali metal conductive membrane.
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