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Lab-size rechargeable metal hydride-air cells
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK).
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK).
2010 (English)In: Journal of Power Sources, ISSN 0378-7753, E-ISSN 1873-2755, Vol. 195, no 17, 5810-5813 p.Article in journal (Refereed) Published
Abstract [en]

Lab-size rechargeable metal hydride-air (MH-air) cells with a gas management device were designed in order to minimize the loss of electrolyte. An AB(5)-type hydrogen storage alloy was used as anode materials of the MH-air. The thickness of the metal hydride electrodes was in the range of 3.0-3.4 mm. Porous carbon-based air electrodes with Ag2O catalysts were used as bi-functional electrodes for oxygen reduction and generation. The electrodes were first examined in half-cells to evaluate their performance and then assembled into one MH-air cell. The results showed the good cycling stability of the rechargeable MH-air cell with a capacity of 1990 mAh. The discharge voltage was 0.69 V at 0.05-0.1 C. The charge efficiency was about 90%. The specific and volumetric energy densities were about 95 Wh kg(-1) and 140 Wh L-1, respectively.

Place, publisher, year, edition, pages
2010. Vol. 195, no 17, 5810-5813 p.
Keyword [en]
Metal hydride electrode, Air-diffusion electrodes, Metal hydride-air cell, Alkaline rechargeable battery, Hydrogen storage alloy
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:su:diva-49216DOI: 10.1016/j.jpowsour.2010.03.086ISI: 000278651100050OAI: oai:DiVA.org:su-49216DiVA: diva2:376899
Note

authorCount :2

Available from: 2010-12-13 Created: 2010-12-13 Last updated: 2017-12-11Bibliographically approved

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