A 28-W portable direct borohydride–hydrogen peroxide fuel-cell stack |
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| Affiliation: | 1. Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012, India;2. Central Electrochemical Research Institute, Karaikudi 630003, India;1. Materials Electrochemistry Group, CeFEMA, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal;2. Università di Genova, Dipartimento di Chimica e Chimica Industriale, Genova I-16146, Italy;1. University of Belgrade – Faculty of Physical Chemistry, Studentski trg 12-16, 11158 Belgrade, Serbia;2. Serbian Academy of Sciences and Arts, Knez Mihajlova 35, 11000 Belgrade, Serbia;3. CeFEMA, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal;1. Department of Physical Chemistry, Electrochemistry Research Laboratory, University of Tabriz, Tabriz, Iran;2. Engineering Faculty, Department of Materials Science and Nanotechnology, Near East University, 99138 Nicosia, North Cyprus, Mersin 10, Turkey |
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| Abstract: | A 28-W direct borohydride–hydrogen peroxide fuel-cell stack operating at 25 °C is reported for contemporary portable applications. The fuel cell operates with the peak power-density of ca. 50 mW cm?2 at 1 V. This performance is superior to the anticipated power-density of 9 mW cm?2 for a methanol–hydrogen peroxide fuel cell. Taking the fuel efficiency of the sodium borohydride–hydrogen peroxide fuel cell as 24.5%, its specific energy is ca. 2 kWh kg?1. High power-densities can be achieved in the sodium borohydride system because of its ability to provide a high concentration of reactants to the fuel cell. |
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