Conversion of CO2 to CO by Electrolysis of Molten Lithium Carbonate

被引：126

作者：

Kaplan, Valery ^{[1
]}

Wachtel, Ellen ^{[2
]}

Gartsman, Konstantin ^{[2
]}

Feldman, Yishay ^{[2
]}

Lubomirsky, Igor ^{[1
]}

机构：

[1] Weizmann Inst Sci, Dept Mat & Interfaces, IL-76100 Rehovot, Israel

[2] Weizmann Inst Sci, Chem Res Support Unit, IL-76100 Rehovot, Israel

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2010年 / 157卷 / 04期

关键词：

current density; electrochemical electrodes; electrolysis; graphite; lithium compounds; ELECTROCHEMICAL REDUCTION; DIOXIDE; PERFORMANCE; ELECTRODES; MIXTURES; CATHODE; SYSTEM; COPPER; GAS;

D O I：

10.1149/1.3308596

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

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.

引用

页码：B552 / B556

页数：5

共 25 条

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