Electrochemical CO2 Reduction on a Copper Wire Electrode in Tetraethylammonium Perchlorate Methanol at Extremely Low Temperature
Electrochemical CO2 Reduction on a Copper Wire Electrode in Tetraethylammonium Perchlorate Methanol at Extremely Low Temperature
复制标题
极低温下高氯酸四乙铵甲醇中铜丝电极电化学 CO2 还原
DOI：
10.1080/00908319950014588
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
T. Mizuno
中科院分区：
文献类型：
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作者：
S. Kaneco;K. Iiba;K. Ohta;T. Mizuno
在极低温度（-30℃）下，用铜线电极研究了高氯酸四乙基铵甲醇电解液中CO2的电化学还原。电化学还原CO2的主要产物为甲烷、乙烯、一氧化碳和甲酸。在最佳实验条件下，CO2经电化学还原可制得28.1%的法拉第效率甲烷、7.2%的乙烯、67.8%的一氧化碳和23.2%的甲酸。在4.0 V vs SCE下，CO2还原和碳氢化合物的最大分电流密度分别为4.5和1.6 mA cm-2。在-30℃时，生成氢的效率被抑制到小于10.1%，这是一个与CO2还原相竞争的反应。
The electrochemical reduction of CO2 in tetraethylammonium perchlorate methanol electrolyte was investigated with a copper wire electrode at an extremely low temperature (-30 C). The main products from CO2 by the electrochemical reduction were methane, ethylene, carbon monoxide, and formic acid. Under the optimum experimental conditions, 28.1% faradaic efficiency methane, 7.2% ethylene, 67.8% carbon monoxide, and 23.2% formic acid were produced from CO2 by the electrochemical reduction. The maximum partial current densities for CO2 reduction and hydrocarbons were 4.5 and 1.6 mA cm-2 at 4.0 V vs SCE, respectively. At -30 C, the efficiency of hydrogen formation, being a competitive reaction against CO2 reduction, was suppressed to less than 10.1%.