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최호경(Hokyung Choi),김상도(Sangdo Kim),유지호(Jiho Yoo),임정환(Jeonghwan Lim),임영준(Youngjoon Rhim),이시훈(Sihyun Lee) 한국연소학회 2010 KOSCOSYMPOSIUM논문집 Vol.- No.40
This paper describes the potential application of ash-free coal to direct carbon fuel cell (DCFC). DCFC can be made of typical fuel cell components and generates the electric energy by direct electrochemical oxidation of carbon, replacing hydrogen with solid carbon fuel. Carbon is mostly originated from coal, which is readily available, easily transportable, and economical. However, employing coal as a carbon source has been excluded, mainly due to its high ash content. The ash-free coal, produced by solvent extraction of combustibles from raw coal, can be applicable as carbon fuel to DCFC. The successful adaption may cut the fuel cost to one third of usual hydrogen fuel cells. In addition, 80% of power generation efficiency can be achieved and CO₂ emission from the conventional coal-fired power plant can be reduced by 90%.