Characterization of some aluminium alloys for application as anodes in alkaline batteries

El Abedin, S. Zein; Saleh, A.O.
March 2004
Journal of Applied Electrochemistry;Mar2004, Vol. 34 Issue 3, p331
Academic Journal
This work deals with the evaluation and characterization of aluminium (99.61%) and some of its alloys namely, Al- Ga-in, Al-Zn, Al-in, Al-Mn and Al-Mg, as anodes in alkaline battery electrolyte. The self-corrosion rate, hydrogen evolution rate and electrochemical properties, such as open circuit potentials, polarization characteristics and anode efficiencies were examined in 4 M KOH solutions. Among the tested alloys, Al-Ga-in alloy is found to be the most promising since it exhibits high open circuit potential, minimum anodic polarization, good anode efficiency and minimum corrosion rate. On the other hand, Al-in and Al-Mn alloys show higher corrosion rate compared with the other alloys, It can be shown that, a stoichiometric correlation exists between the corrosion rate obtained by weight loss and the hydrogen evolution rate.


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