Mathematical modeling of solid oxide fuel cells at high fuel utilization based on diffusion equivalent circuit model
Mathematical modeling of solid oxide fuel cells at high fuel utilization based on diffusion equivalent circuit model
复制标题
基于扩散等效电路模型的固体氧化物燃料电池高燃料利用率数学建模
DOI：
10.1002/aic.12053
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发表时间：
2009
期刊：
影响因子：
3.7
通讯作者：
Su, Qingquan
中科院分区：
文献类型：
--
作者：
Bao, Cheng;Shi, Yixiang;Li, Chen;Cai, Ningsheng;Su, Qingquan
膜电极组件（MEA）中的传质和电化学现象是固体氧化物燃料电池（SOFC）建模的核心组件。一般 MEA 模型仅由用于多组分气体扩散的 Stefan-Maxwell 方程、用于电荷转移的欧姆定律以及用于极化计算的电流-过电势方程来控制。但在高燃料利用率或高电流密度时表现出明显的差异。基于扩散等效电路模型引入了先进的MEA模型。主要目的是通过假设表面扩散阻力与气体体扩散阻力串联来校正三相边界处的真实气体浓度。因此，避免了一般MEA模型中电极迂曲度的不合理增加导致有效气体扩散率的减小，可以在较宽的范围内获得对电池性能的良好预测。该数学模型已在H2AH2O、COACO2和H2ACO燃料系统的情况下得到验证。 VC 2009 美国化学工程师学会 AIChE J, 56: 1363–1371, 2010
Mass transfer and electrochemical phenomena in the membrane electrode assembly (MEA) are the core components for modeling of solid-oxide fuel cell (SOFC). The general MEA model is simply governed with the Stefan-Maxwell equation for multicomponent gas diffusion, Ohm’s law for the charge transfer and the current-overpotential equation for the polarization calculation. However, it has obvious discrepancy at highfuel utilization or high-current density. An advanced MEA model is introduced based on the diffusion equivalent circuit model. The main purpose is to correct the real-gas concentrations at the triple-phase boundary by assuming that the resistance of surface diffusion is in series with that of the gaseous bulk diffusion. Thus, it can obtain good prediction of cell performance in a wide range by avoiding the decrement of effective gas diffusivity via unreasonable increment of the electrode tortuosity in the general MEA model. The mathematical model has been validated in the cases of H2AH2O, COACO2 and H2ACO fuel system. VC 2009 American Institute of Chemical Engineers AIChE J, 56: 1363–1371, 2010
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影响因子：
6.4
作者：
T. Aloui;K. Halouani
通讯作者：
T. Aloui;K. Halouani
影响因子：
9.2
作者：
Yixiang Shi;N. Cai;Chen Li
通讯作者：
Yixiang Shi;N. Cai;Chen Li
影响因子：
9.2
作者：
R. Suwanwarangkul;E. Croiset;M. Fowler;P. Douglas;E. Entchev;M. Douglas
通讯作者：
R. Suwanwarangkul;E. Croiset;M. Fowler;P. Douglas;E. Entchev;M. Douglas
影响因子：
4.6
作者：
M. Hussain;Xianguo Li;I. Dincer
通讯作者：
M. Hussain;Xianguo Li;I. Dincer
DOI：
10.1007/bf00321345
发表时间：
1995
期刊：
Fresenius' Journal of Analytical Chemistry
影响因子：
--
作者：
M. Schulze;R. Reissner;K. Bolwin;W. Kuch
通讯作者：
M. Schulze;R. Reissner;K. Bolwin;W. Kuch