Electrochemical oxidation of boron containing compounds on titanium carbide and its implications to direct fuel cells |
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Authors: | Vankayala Kiran Suresh Babu Kalidindi Balaji Rao Jagirdar Srinivasan Sampath |
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Affiliation: | Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India |
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Abstract: | Electrochemical oxidation of sodium borohydride (NaBH4) and ammonia borane (NH3BH3) (AB) have been studied on titanium carbide electrode. The oxidation is followed by using cyclic voltammetry, chronoamperometry and polarization measurements. A fuel cell with TiC as anode and 40 wt% Pt/C as cathode is constructed and the polarization behaviour is studied with NaBH4 as anodic fuel and hydrogen peroxide as catholyte. A maximum power density of 65 mW cm−2 at a load current density of 83 mA cm−2 is obtained at 343 K in the case of borhydride-based fuel cell and a value of 85 mW cm−2 at 105 mA cm−2 is obtained in the case of AB-based fuel cell at 353 K. |
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Keywords: | Titanium carbide Sodium borohydride Ammonia borane Voltammerty Fuel cell |
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