Conversion of CO2 to CO by Electrolysis of Molten Lithium Carbonate
Conversion of CO2 to CO by Electrolysis of Molten Lithium Carbonate
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DOI：
10.1149/1.3308596
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发表时间：
2010-01-01
影响因子：
3.9
通讯作者：
Lubomirsky, Igor
中科院分区：
文献类型：
--
作者：
Kaplan, Valery;Wachtel, Ellen;Lubomirsky, Igor
研究了熔融Li2CO3电解CO2制CO的反应。使用包括Ti阴极、石墨阳极和CO2源的电解槽允许在900 ℃下以高于100 mA/cm（2）的电极处的电流密度连续电解熔体。该过程的法拉第效率接近100%，在100 mA/cm（2）下的热力学效率> 85%。所提出的方法具有几个优点：（i）不需要贵金属，（ii）不产生危险或有毒的副产物，以及（iii）该方法可以连续操作，产生纯CO而不是CO和CO2的混合物。因此，这里描述的过程具有将电能转化为燃料的潜在应用。
The conversion of CO2 to CO by electrolysis of molten Li2CO3 was investigated. Using a cell comprising a Ti cathode, a graphite anode and a source of CO2 allows the continuous electrolysis of the melt at 900 degrees C with current densities at the electrodes higher than 100 mA/cm(2). The faradaic efficiency of the process is close to 100%, and the thermodynamic efficiency at 100 mA/cm(2) is >85%. The proposed method has several advantages: (i) No precious metal is required, (ii) no hazardous or toxic by-products are produced, and (iii) the method may operate continuously, producing pure CO rather than a mixture of CO and CO2. Therefore, the process described here has a potential application for converting electrical energy into fuel.