Journal
APPLIED ENERGY
Volume 179, Issue -, Pages 1232-1241Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.apenergy.2016.07.068
Keywords
Biofuel; Natural catalyst; Solid oxide fuel cell; Boudouard reaction; Direct carbon
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Funding
- National Science Foundation of China (NSFC) [21276097]
- Special Funds of Guangdong Province Public Research and Ability Construction [2014A010106008]
- Guangdong Innovative and Entrepreneurial Research Team Program [2014ZT05N200]
- Program of Excellent Ph.D Thesis Authors of Guangdong Province
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Biochar derived from orchid tree leaves is utilised as the fuel of a direct carbon solid oxide fuel cell (DC-SOFC), with yttrium stabilized zirconia (YSZ) as electrolyte and cermet of silver and gadolinium doped ceria (Ag-GDC) as the material of both cathode and anode, operating without any liquid medium or feeding gas. The performance of the DC-SOFC operated on the leaf char is higher than that operated on the best reported carbon fuel for DC-SOFCs, Fe-loaded activated carbon. XRD, Raman spectroscopy, SEM and EDX are applied to characterize the leaf char. It turns out that the leaf char is with porous structure and there is much Ca along with some K and Mg uniformly distributing in the leaf char. The effects of the naturally existing alkaline earth metal and alkaline metal and their distribution on the performance of the DC-SOFCs operated on the leaf char are analyzed in detail. (C) 2016 Elsevier Ltd. All rights reserved.
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