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Micromachines 2017, 8(7), 222;

An Inexpensive Paper-Based Aluminum-Air Battery

Department of Chemistry and Biochemistry, California State University, Los Angeles, 5151 State University Drive, Los Angeles, CA 90032-8202, USA
Author to whom correspondence should be addressed.
Received: 23 May 2017 / Revised: 23 June 2017 / Accepted: 12 July 2017 / Published: 17 July 2017
(This article belongs to the Special Issue Paper Microfluidics: Fundamental Studies and Applications)
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Paper-based batteries are an alternative to traditional batteries due to their low cost, portability, and simplicity to operate. In the present work, we demonstrate an improved and inexpensive paper-based aluminum-air battery employing KOH as the electrolyte with sufficient energy to power small devices. The dimensions of the device, electrode size, and electrolyte concentration were optimized with respect to amperage and reproducibility. The maximum amperage of 17.4 mA and maximum power of 3.0 mW was achieved with a 9 cm2 battery with anode and cathode electrode areas of 5.1 cm2 and 3.75 cm2 respectively, using 1.5 M potassium hydroxide (KOH). In a series configuration, the batteries generate sufficient energy to power light-emitting diodes (LEDs), a flashlight, a glucometer, and a pregnancy test. View Full-Text
Keywords: alkaline battery; aluminum; fuel cell; light-emitting diode; open circuit voltage alkaline battery; aluminum; fuel cell; light-emitting diode; open circuit voltage

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Avoundjian, A.; Galvan, V.; Gomez, F.A. An Inexpensive Paper-Based Aluminum-Air Battery. Micromachines 2017, 8, 222.

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