The influence of aluminum anode alloys and alkaline electrolyte composition on performance of aluminum-air cells for portable applications

Numerical Modeling and Analysis of the Performance of an Aluminum-Air Battery with Alkaline Electrolyte

“…In order to mitigate self-corrosion of the aluminum anode in alkaline electrolytes, anodic alloying and electrolyte additives have been investigated in depth. Anode alloying generally uses the addition of Zn, In, Mg, Ga, Sn, Bi, B, and other elements to the aluminum anode, so that the formed aluminum alloy has a higher hydrogen evolution potential and corrosion resistance [11][12][13][14][15][16][17][18][19][20][21][22]. Furthermore, the addition of Cl − , F − , SO 4 2− , In 3+ , Ga(OH) 4 − , MnO 4 2− , ZnO, and other additives to the electrolyte were shown to improve the activation and corrosion resistance of aluminum anodes [23,24].…”

On optimum temperature conditions for operation of portable aliminum-air batteries

“…According to the data of [5], in contrast to pure aluminum the latter alloy is not passivated and continues to work at high working current densities after the beginning of aluminum hydroxide precipitation which results in sufficient increase of aluminum-air cells capacity.…”

“…When concerning design of portable AABs, the results obtained in [4,5] are useful. In these articles it is shown that main limitation of specific capacity at heightened temperatures for aluminum-air cells without any loop of electrolyte circulation is connected with anode passivation that occurs at the initial stage of aluminum hydroxide precipitation from electrolyte.…”