Abstract
A laboratory metal hydride/air cell was evaluated. Charging was via a bifunctional air gas-diffusion electrode. Mixed nickel and cobalt oxides, supported on carbon black and activated carbon, were used as catalysts in this electrode. At 30mAcm−2 in 6m KOH, the air electrode potentials were −0.2V (oxygen reduction) and +0.65V (oxygen evolution) vs Hg/HgO. The laboratory cell was cycled for 50 cycles at the C/2 rate (10mAcm−2). The average discharge/charge voltages of the cell were 0.65 and 1.6V, respectively. The initial capacity of the metal hydride electrode decreased by about 15% after 50 cycles.
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Gamburzev, S., Zhang, W., Velev, O.A. et al. Development of a novel metal hydride–air secondary battery. Journal of Applied Electrochemistry 28, 545–549 (1998). https://doi.org/10.1023/A:1003229514453
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DOI: https://doi.org/10.1023/A:1003229514453