Modeling Planar and Self-Breathing Fuel Cells for Use in Electronic Devices
Modeling Planar and Self-Breathing Fuel Cells for Use in Electronic Devices
复制标题
对电子设备中使用的平面和自呼吸燃料电池进行建模
DOI：
--
复制
发表时间：
2004
期刊：
影响因子：
--
通讯作者：
J. Schumacher
中科院分区：
文献类型：
--
作者：
C. Ziegler;A. Schmitz;M. Tranitz;E. Fontes;J. Schumacher
对一种平面自呼吸燃料电池进行了理论研究。本工作包括平面自呼吸燃料电池的数学模型的建立，模型的验证，以及这种类型燃料电池的行为研究。所建立的数学模型是二维非等温的。将平面自呼吸燃料电池的实测总体性能与模型预测结果进行了比较，验证了模型的有效性。该类型电池的最大功率密度在0.5 ~ 0.4 V之间，因此应用该模型研究参考电池在0.4 V电压下的性能。研究结果表明，阴极端板的几何设计对气体分布、电位分布和温度分布有较大的影响。阴极和阳极活性区电荷的产生速率受阴极端板肋的影响。发现阴极电流分布有很强的不均匀性。©2004电化学学会。版权所有。
A theoretical study of a planar and self-breathing fuel cell is presented. This work contains the development of a mathematical model for planar self-breathing fuel cells, the validation of the model, and a study of the behavior of this type of fuel cell. The mathematical model presented is two-dimensional and nonisothermal. The validation of the model is performed by comparison of the measured overall performance of a planar self-breathing fuel cell to the predictions of the model. For this type of cell, the maximum power density is in the range between 0.5 and 0.4 V, so the model is applied to study the behavior of the reference cell at a cell voltage of 0.4 V. The results of this study show the gas distribution, the potential distribution, and the temperature distribution are influenced strongly by the geometric design of the cathode end plate. The charge generation rate in the active area of the cathode and anode is affected by the ribs of the cathode end plate. A strong nonuniformity of the current distribution in the cathode is found. © 2004 The Electrochemical Society. All rights reserved.