The performance of a mechanically rechargeable aluminum (Al)–air cell, fabricated with low-cost materials including low-grade aluminum foil and carbon paper electrodes, was evaluated. The design adopted a free gravity flow for the electrolyte to eliminate the use of an external pump. A tank for storing waste electrolyte was designed with a dedicated channel for the collection of hydrogen gas generated during the cell discharge. The cell achieved a high utilization efficiency of aluminum. Considering both the electricity and hydrogen generated, an overall utilization efficiency of around 90% or even higher could be achieved under different working voltages. Results of repeated recharging/discharging showed that the performances of the cell could be maintained for repeated refilling.
A Low-Cost Mechanically Rechargeable Aluminum–Air Cell for Energy Conversion Using Low-Grade Aluminum Foil
Manuscript received November 16, 2015; final manuscript received January 21, 2016; published online March 2, 2016. Editor: San Ping Jiang.
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Chen, B., and Leung, D. Y. C. (March 2, 2016). "A Low-Cost Mechanically Rechargeable Aluminum–Air Cell for Energy Conversion Using Low-Grade Aluminum Foil." ASME. J. Electrochem. En. Conv. Stor. February 2016; 13(1): 011001. https://doi.org/10.1115/1.4032669
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