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http://dx.doi.org/10.7316/KHNES.2012.23.5.513

An Experimental Study on the Characteristics of Electrochemical Reactions of RDF/RPF in the Direct Carbon Fuel Cell  

Ahn, Seong Yool (Grad. School of Pusan National Univ.)
Rhie, Young Hoon (Grad. School of Pusan National Univ.)
Eom, Seong Yong (Grad. School of Pusan National Univ.)
Sung, Yeon Mo (Grad. School of Pusan National Univ.)
Moon, Cheor Eon (Grad. School of Pusan National Univ.)
Kang, Ki Joong (Grad. School of Pusan National Univ.)
Choi, Gyung Min (School of Mechanical Engineering, Pusan National Univ.)
Kim, Duck Jool (School of Mechanical Engineering, Pusan National Univ.)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.23, no.5, 2012 , pp. 513-520 More about this Journal
Abstract
The electrochemical reaction of refuse derived fuel (RDF) and refuse plastic/paper fuel (RPF) was investigated in the direct carbon fuel cell (DCFC) system. The open circuit voltage (OCV) of RPF was higher than RDF and other coals because of its thermal reactive characteristic under carbon dioxide. The thermal reactivity of fuels was investigated by thermogravimetric analysis method. and the reaction rate of RPF was higher than other fuels. The behavior of all sample's potential was analogous in the beginning region of electrochemical reactions due to similar functional groups on the surface of fuels analyzed by X-ray Photoelectron Spectroscopy experiments. The potential level of RDF and RPF decreased rapidly comparing to coals in the next of the electrochemical reaction because the surface area and pore volume investigated by nitrogen gas adsorption tests were smaller than coals. This characteristic signifies the contact surface between electrolyte and fuel is restricted. The potential of fuels was maintained to the high current density region over 40 $mA/cm^2$ by total carbon component. The maximum power density of RDF and RPF reached up to 45~70% comparing to coal. The obvious improvement of maximum power density by increasing operating temperature was observed in both refuse fuels.
Keywords
Direct carbon fuel cell; Electrochemical reaction; Refuse fuel; Fuel property;
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