A direct borohydride fuel cell employing Prussian Blue as mediated electron-transfer hydrogen peroxide reduction catalyst
✍ Scribed by G. Selvarani; S.K. Prashant; A.K. Sahu; P. Sridhar; S. Pitchumani; A.K. Shukla
- Publisher
- Elsevier Science
- Year
- 2008
- Tongue
- English
- Weight
- 870 KB
- Volume
- 178
- Category
- Article
- ISSN
- 0378-7753
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✦ Synopsis
A direct borohydride-hydrogen peroxide fuel cell employing carbon-supported Prussian Blue (PB) as mediated electron-transfer cathode catalyst is reported. While operating at 30 • C, the direct borohydride-hydrogen peroxide fuel cell employing carbon-supported PB cathode catalyst shows superior performance with the maximum output power density of 68 mW cm -2 at an operating voltage of 1.1 V compared to direct borohydridehydrogen peroxide fuel cell employing the conventional gold-based cathode with the maximum output power density of 47 mW cm -2 at an operating voltage of 0.7 V. X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), and Energy Dispersive X-ray Analysis (EDAX) suggest that anchoring of Cetyl-Trimethyl Ammonium Bromide (CTAB) as a surfactant moiety on carbon-supported PB affects the catalyst morphology. Polarization studies on direct borohydride-hydrogen peroxide fuel cell with carbon-supported CTAB-anchored PB cathode exhibit better performance with the maximum output power density of 50 mW cm -2 at an operating voltage of 1 V than the direct borohydride-hydrogen peroxide fuel cell with carbon-supported Prussian Blue without CTAB with the maximum output power density of 29 mW cm -2 at an operating voltage of 1 V.