Electrochemical reduction of CO2 using Cu electrode in methanol/LiClO4 electrolyte
Electrochemical reduction of CO2 using Cu electrode in methanol/LiClO4 electrolyte
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DOI：
10.1016/j.ijhydene.2015.04.006
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发表时间：
2015-06
影响因子：
7.2
通讯作者：
M. Murugananthan;M. Kumaravel;H. Katsumata;Tohru Suzuki;S. Kaneco
中科院分区：
文献类型：
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作者：
M. Murugananthan;M. Kumaravel;H. Katsumata;Tohru Suzuki;S. Kaneco
在以LiClO4为支持电解液的冷甲醇(243℃)介质中，用铜丝电极研究了CO2在高压下的电化学还原。还原产物主要为甲烷、CO、乙烯和HCOOCH3。实验在不同的工作电势范围内进行，范围从−3.0到−4.0 V，并根据它们的法拉第效率对实验结果进行了讨论。在243K和4atm下，不同的外加电位都有利于甲烷的生成，其中最负的电位(−4.00V)表现出相对较好的效率。但在−为4.00V时，还原产物H_2的生成率高达60.2%。讨论了支持电解质阳离子大小对甲烷和CO有效生成的影响。
Electrochemical reduction of CO2under high pressure in cold methanol (243 K) medium containing LiClO4as supporting electrolyte was studied using Cu wire electrode. The major reduction products formed were methane, CO, ethylene and HCOOCH3. The experiments were carried out at different operating potential ranging from −3.0 to −4.0 V and the results were discussed in terms of their faradaic efficiencies. The different applied potentials employed invariably favored methane formation in the presence of Li+, at 243 K and 4 atm and, among which, the most negative potential (−4.00 V) showed relatively better efficiency than the less negative potentials. However, the H2formation, an undesirable reduction product, was found to be as high as 60.2% at −4.00 V. The effective formation of methane and CO were discussed in terms of influence of the size of the cation of the supporting electrolyte used.