A direct borohydride fuel cell employing Prussian Blue as mediated electron-transfer hydrogen peroxide reduction catalyst

被引:71
作者
Selvarani, G. [1 ]
Prashant, S. K. [1 ]
Sahu, A. K. [1 ]
Sridhar, P. [1 ]
Pitchumani, S. [1 ]
Shukla, A. K. [1 ,2 ]
机构
[1] Cent Electrochem Res Inst, Karaikkudi 630006, Tamil Nadu, India
[2] Indian Inst Sci, Solid State & Struct Chem Unit, Bangalore 560012, Karnataka, India
关键词
direct borohydride fuel cell; hydrogen peroxide; Prussian blue; mediated electron-transfer; cetyl-trimethyl ammonium bromide;
D O I
10.1016/j.jpowsour.2007.11.115
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
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 degrees 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 borohydride-hydrogen 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. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码:86 / 91
页数:6
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