Bench-scale electrochemical system for generation of CO and syn-gas

被引:1
作者
Eric J. Dufek
Tedd E. Lister
Michael E. McIlwain
机构
[1] Idaho National Laboratory,
来源
Journal of Applied Electrochemistry | 2011年 / 41卷
关键词
Carbon dioxide reduction; Gas diffusion electrode; Syn-gas; Energy storage; Energy conversion; Electrolysis; Load-leveling;
D O I
暂无
中图分类号
学科分类号
摘要
A flow cell based, bench-scale electrochemical system for generation of synthesis-gas (syn-gas) is reported. Sensitivity to operating conditions such as CO2 flow, current density, and elevated temperature are described. By increasing the temperature of the cell the kinetic overpotential for the reduction of CO2 was lowered with the cathode voltage at 70 mA cm−2 decreased by 0.32 V and the overall cell voltage dropping by 1.57 V. This equates to an 18% increase in cell efficiency. By closely monitoring the products it was found that at room temperature and 70 °C the primary products are CO and H2. By controlling the current density and the flow of CO2 it was possible to control the H2:CO product ratio between 1:4 and 9:1. The reproducibility of performing experiments at elevated temperature and the ability to generate syn-gas for extended periods of time is also discussed.
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页码:623 / 631
页数:8
相关论文
共 60 条
[1]  
Jitaru M(1997)undefined J Appl Electrochem 27 875-undefined
[2]  
Lowry DA(2007)undefined Energy Convers Manag 48 1255-undefined
[3]  
Toma M(1995)undefined J Electroanal Chem 391 141-undefined
[4]  
Gattrell M(2008)undefined J Electrochem Soc 155 B42-undefined
[5]  
Gupta N(1997)undefined J Electrochem Soc 144 539-undefined
[6]  
Co A(1997)undefined J Electroanal Chem 434 239-undefined
[7]  
Hara K(1990)undefined J Electrochem Soc 137 607-undefined
[8]  
Kudo A(2010)undefined Electrochem Solid State Lett 13 B109-undefined
[9]  
Sakata T(1985)undefined J Electrochem Soc 132 259-undefined
[10]  
Delacourt C(1989)undefined J Electroanal Chem 260 441-undefined