A direct carbon fuel cell (DCFC) fuelled with de-ashed coal is proposed to produce electricity directly from chemical conversion of a solid carbon at high temperature. A tubular single cell is made of an yttria-stabilized zirconia (YSZ) electrolyte with a cermet anode of NiO/YSZ and a composite cathode consisting of strontium-doped lanthanum manganite (LSM) and YSZ. In order to use the de-ashed coal as fuel, ash (mineral matters) in coal is removed by using the solvent extract technology and it has an ash content of approx. 1 wt.%. This study proposes a feasibility of de-ashed coal for the fuel cell and measures its performance when temperature is varied from 600°C to 900°C. It is indicated that the development of new fuels and the optimization of tubular structures are desirable for the long-term stability of DCFC.
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