Journal
RSC ADVANCES
Volume 4, Issue 110, Pages 65031-65034Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ra10196k
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Funding
- Research Grants Council of the Hong Kong Special Administrative Region, China [623313]
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In conventional ethanol-hydrogen peroxide fuel cells, the cathode potential is created by the reduction reaction of hydrogen peroxide. In this work, we propose to create the cathode potential by introducing a redox couple to the cathode while using hydrogen peroxide to chemically charge the redox ions. The idea not only completely eliminates the mixed-potential issue associated with the direct reduction of hydrogen peroxide, but also enables faster cathodic electrochemical kinetics with no catalysts. Experimentally, it is demonstrated that the ethanol-hydrogen peroxide fuel cell with a redox couple of V(IV)/V(V) yields a peak power density of 450mW cm(-2) at 60 degrees C, which is 87.5% higher than that of the conventional cell with direct reduction of hydrogen peroxide.
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