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http://dx.doi.org/10.3795/KSME-B.2016.40.11.697

Correlation Between Surface Properties of Fuel and Performance of Direct Carbon Fuel Cell by Acid Treatment  

Kim, Dong Heon (Dept. of Mechanical Engineering, Pusan, Nat'l Univ.)
Eom, Seong Yong (Dept. of Mechanical Engineering, Pusan, Nat'l Univ.)
Choi, Gyung Min (Dept. of Mechanical Engineering, Pusan, Nat'l Univ.)
Kim, Duck Jool (Dept. of Mechanical Engineering, Pusan, Nat'l Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.40, no.11, 2016 , pp. 697-704 More about this Journal
Abstract
Coal modified by acid treatment was investigated to analyze the correlation between the cell performance and electrochemical parameters in a direct carbon fuel cell (DCFC). The fuels were subjected to thermogravimetry analysis, gas adsorption test, and X-ray photoelectron spectroscopy to investigate the fuel properties and surface characteristics. After the treatment of raw coal, the thermal reactivity of the treated fuels increased, and the specific surface area decreased, though the mean pore diameters of three fuels were similar. The coal treated by $HNO_3$ showed the highest ratio of oxygen to carbon, and also an increase in the surface oxygen groups on the fuel surface. Through comparison between the fuel surface properties and electrochemical performance, it was confirmed that the surface oxygen groups have an influence on the improvement in the DCFC performance.
Keywords
Direct Carbon Fuel Cell; Treatment of Coal; Electrochemical Reaction; Fuel Property;
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Times Cited By KSCI : 3  (Citation Analysis)
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