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Improving the direct borohydride fuel cell performance with thiourea as the additive in the sodium borohydride solution

✍ Scribed by Cenk Celik; Fatma Gul Boyaci San; Halil Ibrahim Sarac

Publisher: Elsevier Science
Year: 2010
Tongue: English
Weight: 302 KB
Volume: 35
Category: Article
ISSN: 0360-3199
DOI: 10.1016/j.ijhydene.2010.04.150

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✦ Synopsis

In this study, the effects of the additive thiourea (TU) have been investigated under steady state/steady-flow and uniform state/uniform-flow systems with the aim of minimizing the anodic hydrogen evolution on Pd in order to increase the performance of a direct borohydride fuel cell. The fuel cell has consisted of Pd/C anode, Pt/C cathode and Na þ form Nafion membrane as the electrolyte. There has been a small improvement in peak power density and fuel utilization ratio by addition of TU (1.6 Â 10 À3 M) into the sodium borohydride solution; the peak power densities of 14.4 and 15.1 mW cm À2 , and fuel utilization ratios of 21.6% and 23.2% have been obtained without and with TU, respectively.

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