Effect of Deformation on Electrochemical Performance of Aluminum-Air Battery

Abstract

In this paper, the dependency on the metal deformation of the anode and electrochemical performance in an Al-air battery is investigated. We notably find a strong dependency in which the electrochemical performance is significantly governed by the dislocation density of the metal. Three specimens of different dislocation densities are prepared through a cold-rolling press: (i) 3.0 x 10(15) m(-2), (ii) 6.5 x 10(15) m(-2), and (iii) 19 x 10(15) m(-2). The peak power densities of the three Al-air batteries show 252, 219 and 174 mWcm(-2), respectively. We conclude that the high mechanical properties (i.e., high dislocation density and hardness) are related to the electrochemical performances in Al-air battery. (C) 2020 The Electrochemical Society ("ECS"). Published on behalf of ECS by IOP Publishing Limited.