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Expressions for Entropy Production Rate of Fuel Cells
Tong-ling Lin,Ying-ru Zhao,Jin-can Chen*
Author NameAffiliationE-mail
Tong-ling Lin Department of Physics and Institute of Theoretical Physics and Astrophysics, Xiamen University, Xiamen 361005, China  
Ying-ru Zhao Department of Physics and Institute of Theoretical Physics and Astrophysics, Xiamen University, Xiamen 361005, China  
Jin-can Chen* Department of Physics and Institute of Theoretical Physics and Astrophysics, Xiamen University, Xiamen 361005, China jcchen@xmu.edu.cn 
Abstract:
On the basis of a general model of fuel cells, the entropy production rates of a fuel cell system under different conditions are derived by using theories of electrochemistry and thermodynamics. In order to analyze the influence of the irreversible losses existing in an actual fuel cell, the equivalent circuit of the fuel cell is introduced, so that the irreversible factor of the fuel cell may be determined directly as a function of the internal, leak and load resistances. Moreover, the maximum power output and efficiency of the fuel cell are calculated, the optimal operation of the fuel cell is discussed, and the matching condition of the load resistance is determined.
Key words:  Fuel cell, Irreversible loss, Entropy production rate, Optimal analysis, Matching condition
FundProject:国家自然科学基金
Expressions for Entropy Production Rate of Fuel Cells
林通灵,赵英汝,陈金灿*
摘要:
基于燃料电池的一般模型,应用电化学和热力学理论导出燃料电池系统在不同条件下熵产生率的表示式.为了分析存在实际燃料电池中不可逆损失的影响,引进燃料电池的等效电路,直接将燃料电池的不可逆因子表示为内电阻、漏电阻和负载电阻的函数.进而计算燃料电池的最大输出功率和效率,讨论燃料电池的优化运行,确定负载电阻的匹配条件,从而得到一些有意义的结果.
关键词:  燃料电池,不可逆损失,熵产生率,优化分析,匹配条件
DOI:10.1088/1674-0068/21/04/361-366
分类号: