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심규성(Kyu Sung Sim),김종원(Jong Won Kim),김연순(Yeon Soon Kim),명광식(Kwang Sik Myeong) 한국수소및신에너지학회 1998 한국수소 및 신에너지학회논문집 Vol.9 No.1
The catalytic hydrogenation of carbon dioxide has been studied for the fixation of carbon dioxide to mitigate global warming problems, but it needed hydrogen, which the price is still high. Recently, the electrochemical reduction of carbon dioxide has been drawn attractions because carbon dioxide could be converted to the valuable chemicals such as methane, ethane and alcohols electrochemically in the electrolyte solution using a catalytic electrode. This system is simple because the water electrolysis and hydrogenation take place at the same time using the surplus electricity at midnight. In this work, a continuous electrochemical reduction system was fabricated, which was composed of the reduction electrode(copper or perovskite type, 2 × 2 ㎠), reference electrode(platinum, 2 × 6 ㎠), standard electrode(Ag/AgCl), and potassium bicarbonate electrolyte solution saturated with carbon dioxide. The quality and quantity of the products and reduction current were analyzed, according to the electrolyte concentration and electrode type.