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High performance aluminum-air battery for sustainable power generation

Tan, Weng Cheong; Saw, Lip Huat; Yew, Ming Chian; Sun, Dongyang; Chen, Wei-Hsin


Weng Cheong Tan

Lip Huat Saw

Ming Chian Yew

Wei-Hsin Chen


Metal-air battery is receiving vast attention due to its promising capabilities as an energy storage system for the post lithium-ion era. The electricity is generated through oxidation and reduction reaction within the anode and cathode. Among various types of metal-air battery, aluminum-air battery is the most attractive candidate due to its high energy density and environmentally friendly. In this study, a novel polypropylene-based dual electrolyte aluminum-air battery is developed. Polypropylene pads are used as a medium to absorb the electrolyte, isolate the anode and cathode, control the hydrogen generation in the parasitic reaction. Potassium hydroxide is used as anolyte and sulfuric acid is used as catholyte. Parametric study is conducted to investigate the effect of electrolyte concentration and polypropylene separator thickness on the performance of the battery. The results show that the dual-electrolyte system can boost the open circuit voltage to 2.2 V as compared to the single electrolyte system for 5 M of anolyte while maintaining specific discharge capacity of about 1390.92 mAh.g−1. The maximum peak power density has improved dramatically from 100−2 to 350 mW cm−2 for the dual electrolyte system.

Journal Article Type Article
Acceptance Date Nov 21, 2022
Online Publication Date Dec 29, 2022
Publication Date Apr 1, 2023
Deposit Date Jan 4, 2023
Publicly Available Date Dec 30, 2023
Journal International Journal of Hydrogen Energy
Print ISSN 0360-3199
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 48
Issue 28
Pages 10438-10451
Keywords Metal-air battery, Aluminum-air battery, Hydrogen generation, Energy storage system, Dual-electrolyte system
Public URL


High Performance Aluminum-air Battery For Sustainable Power Generation (accepted version) (728 Kb)

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