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Energies 2017, 10(8), 1124; https://doi.org/10.3390/en10081124

The Performance of a Direct Borohydride/Peroxide Fuel Cell Using Graphite Felts as Electrodes

1
Advanced Institute of Manufacturing with High-tech Innovations and Department of Mechanical Engineering, National Chung Cheng University, 168, University Rd., Minhsiung Township, Chiayi 62102, Taiwan
2
National Chung-Shan Institute of Science & Technology, Materials & Electro-Optics Research Division, P.O. Box No. 90008-8-2, Longtan, Taoyuan 32599, Taiwan
*
Author to whom correspondence should be addressed.
Received: 24 June 2017 / Revised: 20 July 2017 / Accepted: 25 July 2017 / Published: 1 August 2017
(This article belongs to the Special Issue Polymer Electrolyte Membrane Fuel Cells 2017)
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Abstract

A direct borohydride/peroxide fuel cell (DBPFC) generates electrical power by recirculating liquid anolyte and catholyte between the stack and reservoirs, which is similar to the operation of flow batteries. To enhance the accessibility of the catalyst layer to the liquid anolyte/catholyte, graphite felts are employed as the porous diffusion layer of a single-cell DBPFC instead of carbon paper/cloth. The effects of the type of anode alkaline solution and operating conditions, including flow rate and temperature of the anolyte/catholyte, on DBPFC performance are investigated and discussed. The durability of the DBPFC is also evaluated by galvanostatic discharge at 0.1 A∙cm−2 for over 50 h. The results of this preliminary study show that a DBPFC with porous graphite electrodes can provide a maximum power density of 0.24 W∙cm−2 at 0.8 V. The performance of the DBPFC drops slightly after 50 h of operation; however, the discharge capacity shows no significant decrease. View Full-Text
Keywords: borohydride; peroxide; fuel cell; graphite felt; diffusion layer borohydride; peroxide; fuel cell; graphite felt; diffusion layer
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Lee, H.-Y.; Hsu, Y.-H.; Tsai, P.-H.; Lee, J.-Y.; Chen, Y.-S. The Performance of a Direct Borohydride/Peroxide Fuel Cell Using Graphite Felts as Electrodes. Energies 2017, 10, 1124.

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