Analysis of a gas-phase Br2–H2 redox flow battery

被引：0
作者：
Rui Zhang
John W. Weidner
机构：
[1] University of South Carolina,Department of Chemical Engineering, Center for Electrochemical Engineering
来源：
Journal of Applied Electrochemistry | 2011年 / 41卷
关键词：
Br; –H; flow battery; Mathematical model; Mass transfer; Efficiency;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The operation of a gas-phase Br2–H2 flow battery is analyzed via a mathematical model and compared to experimental data. The model predicts the operating conditions of the cell in both fuel-cell (i.e., discharge) and electrolysis (i.e., charge) mode as a function of current, inlet gas composition, flow rate, and pressure differential across the membrane. The analysis reveals that gas-phase Br2/HBr reactants significantly enhance mass transfer, which enables higher currents densities to be achieved compared to a liquid-fed system. A key feature of the model is water transport across the membrane, which determines membrane conductivity, reactant concentration and undesired condensation. The model is used to provide insight into cell operation, including operating conditions needed to avoid water condensation.
引用
收藏
页码：1245 / 1252
页数：7
相关论文
共 41 条
[1]  
de Leon CP(2006)undefined J Power Sources 160 716-undefined
[2]  
Frias-Ferrer A(2011)undefined Chem Rev 111 3577-undefined
[3]  
Gonzalez-Garcia J(2011)undefined J Electrochem Soc 158 R55-undefined
[4]  
Szanto DA(1998)undefined Energy Fuels 12 56-undefined
[5]  
Walsh FC(1998)undefined J Power Sources 22 423-undefined
[6]  
Yang Z(1980)undefined J Electrochem Soc 127 528-undefined
[7]  
Zhang J(1984)undefined J Electrochem Soc 131 1477-undefined
[8]  
Meyer MCWK(1986)undefined J Electrochem Soc 133 1297-undefined
[9]  
Lu X(2002)undefined J Electrochem Soc 149 D63-undefined
[10]  
Choi D(1998)undefined Interface 7 32-undefined
12345