Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5146174 | International Journal of Hydrogen Energy | 2017 | 9 Pages |
Abstract
A novel green method was presented for the simultaneous synthesis of syngas, a mixture of CO and H2, via the co-electrolysis of CO2/H2O using an established eutectic-salt electrolyte. Optimum electrolysis was carried out at 2.2 V using a two-electrode system composed of a coiled Fe cathode and a coiled Ni anode in eutectic Li1.07Na0.75Ca0.045CO3/0.15LiOH. The molar ratio of H2/CO was finely tuned from 1.96 to 7.97 by controlling the amount of CaCO3. The optimized current efficiency, â¼92%, was acquired by 14.28 wt% CaCO3 addition. Moreover, the relatively low operating temperature of 600 °C was beneficial for practical applications compared to previously reported temperatures in excess of 800 °C, providing a feasible basis for syngas production via electrochemical synthesis. In this manner, CO2/H2O was synergistically converted into valuable chemicals, allowing the CO2 to be utilized efficiently for the conversion and storage of electricity to chemical energy.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Yue Liu, Deqiang Ji, Zhida Li, Dandan Yuan, Mengpei Jiang, Guanjian Yang, Yanyan Yu, Yuhang Wang, Hongjun Wu,