A comparative study of different carbon fuels in an electrolyte-supported hybrid direct carbon fuel cell

Xiaoyong Xu, Wei Zhou, Fengli Liang and Zhonghua Zhu

Applied Energy, 2013, vol. 108, issue C, 402-409

Abstract: An electrolyte-supported hybrid direct carbon fuel cell (DCFC) was used to evaluate the performance of different carbon fuels in this study. The direct carbon fuel cell consists of a samarium doped ceria (SDC) electrolyte, a Ni/SDC anode and a Ba0.5Sr0.5Co0.8Fe0.2O3−δ cathode. Three types of carbon (graphite, coal and activated carbon) and three particle sizes of activated carbon (70, 250 and 500μm) were investigated at 650–750°C. The electrochemical reactivity of these three types of carbon fuels was in the order of activated carbon>German creek coal>graphite. Sulphur in German creek coal has poisoning effect on Ni catalyst resulting in lower power density of the fuel cells. The activated carbon (250μm) fuelled hybrid DCFC achieved a peak power density of 158.3mWcm−2 at 750°C along with the maximum current density of 561.5mAcm−2. However, the stability of the hybrid DCFC is poor and need to be improved at the present.

Keywords: Direct carbon fuel cell; Electrolyte-supported fuel cell; Solid carbon; Carbonates (search for similar items in EconPapers)
Date: 2013
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (9)

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DOI: 10.1016/j.apenergy.2013.03.053

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