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Effect of Ga3+ and In3+ Ions on the Anodic Dissolution of Aluminum in KOH Ethanol Solutions

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Abstract

The anodic dissolution of aluminum in the KOH ethanol solutions is considered. It is shown that an addition of gallium and indium compounds to the 2 M KOH solution in 96% ethanol leads to an abrupt increase in the anodic dissolution current of aluminum near the open-circuit potential and its shift by 300 mV toward negative values. The discharge galvanostatic curves in the solutions with the additives of gallium and indium compounds contain a flat discharge plateau at the current densities up to 4 mA/cm2. The hydrogen evolution rate in a number of KOH ethanol solutions is measured.

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Funding

The work was performed with support of the Ministry of Science and Higher Education of Russian Federation.

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Authors and Affiliations

  1. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 119071, Moscow, Russia

    K. V. Rybalka & L. A. Beketaeva

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  1. K. V. Rybalka
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  2. L. A. Beketaeva
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Correspondence to K. V. Rybalka.

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The authors declare that they have no conflicts of interest.

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Translated by T. Kabanova

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Rybalka, K.V., Beketaeva, L.A. Effect of Ga3+ and In3+ Ions on the Anodic Dissolution of Aluminum in KOH Ethanol Solutions. Russ J Electrochem 59, 162–167 (2023). https://doi.org/10.1134/S102319352302009X

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  • DOI: https://doi.org/10.1134/S102319352302009X

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