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http://dx.doi.org/10.3795/KSME-B.2017.41.11.727

Effects of Electrode Material on Electrochemical Conversion of Carbon Dioxide Using Molten Carbonate Electrolyte  

Ju, Hong Su (School of Mechanical Engineering, Pusan Nat'l Univ.)
Eom, Seong Yong (School of Mechanical Engineering, Pusan Nat'l Univ.)
Kang, Ki Joong (School of Mechanical Engineering, Pusan Nat'l Univ.)
Choi, Gyung Min (School of Mechanical Engineering, Pusan Nat'l Univ.)
Kim, Duck Jool (School of Mechanical Engineering, Pusan Nat'l Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.41, no.11, 2017 , pp. 727-734 More about this Journal
Abstract
The electrochemical conversion of $CO_2$ is one of the methods for reducing $CO_2$. Four materials (Ag, Ni, Pt, and Ir) were selected as the electrodes. The electrochemical conversion was performed under a cell voltage of 4.0 V at $600^{\circ}C$. The amounts of $CO_2$ reduction and carbon production were at the highest for Ag, followed by, Pt, Ni, and then Ir. The produced carbon samples were analyzed by thermogravimetric analysis and XRD. The thermogravimetric analysis results indicated that all the carbon produced at each electrode exhibited similar thermal reactivity. The XRD results showed that the crystallization of carbon was different depending on the electrode utilized. Although electrochemical conversion was the highest for the Ag electrode, a loss of material accompanied it. Therefore, for this study, the optimal electrode is Pt, taking into account reactivity and material losses.
Keywords
Electrochemical Conversion; Molten Carbonate Electrolyte; Electrolytic Cell; Electrode Material;
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Times Cited By KSCI : 5  (Citation Analysis)
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