Journal
JOURNAL OF POWER SOURCES
Volume 336, Issue -, Pages 19-26Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2016.10.051
Keywords
Aluminum-air cell; High specific capacity; Inorganic/organic hybrid electrolyte; Membraneless; Methanol-based anolyte
Funding
- Hong Kong Research Grant Council GRF [714313]
- SRT on Clean Energy of the University of Hong Kong
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Aluminum-air cells have attracted a lot of interests because they have the highest volumetric capacity density in theory among the different metal-air systems. To overcome the self-discharge issue of aluminum, a microfluidic aluminum-air cell working with KOH methanol-based anolyte was developed in this work. A specific capacity up to 2507 mAh g(-1) (that is, 84.1% of the theoretical value) was achieved experimentally. The KOH concentration and water content in the methanol-based anolyte were found to have direct influence on the cell performance. A possible mechanism of the aluminum reactions in KOH methanol-based electrolyte was proposed to explain the observed phenomenon. (C) 2016 Elsevier B.V. All rights reserved.
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