Nestoridi, Maria, Pletcher, Derek, Wharton, Julian A. and Wood, Robert J.K.
Further studies of the anodic dissolution in sodium chloride electrolyte of aluminium alloys containing tin and gallium
Journal of Power Sources, 193, (2), . (doi:10.1016/j.jpowsour.2009.05.023).
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As part of a programme to develop a high power density, Al/air battery with a NaCl brine electrolyte, the high rate dissolution of an aluminium alloy containing tin and gallium was investigated in a small volume cell. The objective was to define the factors that limit aluminium dissolution in condition that mimic a high power density battery. In a cell with a large ratio of aluminium alloy to electrolyte, over a range of current densities the extent of dissolution was limited to ?1000 C cm?2 of anode surface by a thick layer of loosely bound, crystalline deposit on the Al alloy anode formed by precipitation from solution. This leads to a large increase in impedance and acts as a barrier to transport of ions.
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