有无电化学反应下SOFC流道流动均匀性对比研究

崔珊珊; 王鑫钰; 葛园梦; 朱润森; 董文彬; 张雅晶

doi:10.19799/j.cnki.2095-4239.2026.0468

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有无电化学反应下SOFC流道流动均匀性对比研究

储能XXXX | 更新时间：2026-07-21

- 有无电化学反应下SOFC流道流动均匀性对比研究
- Comparative Study on Flow Uniformity in SOFC Channels with and without Electrochemical Reactions
- 储能科学与技术 2026年页码：1-14
- 作者机构：
  
  安徽科技工程大学智能制造学院，安徽滁州 239000
- 作者简介：
  
  崔珊珊（2002—），女，硕士研究生（在读），燃料电池，E-mail：1537494076@qq.com；
  董文彬，讲师，先进材料成型，E-mail：dongwb@ahstu.edu.cn。
- 基金信息：
  
  安徽省高校自然科学研究项目(2023AH051880);企业委托横向项目(882211)
- DOI：10.19799/j.cnki.2095-4239.2026.0468
  中图分类号： TM 911.42
- 收稿：2026-05-28，
  
  修回：2026-07-05，
  
  网络首发：2026-07-21，
- 稿件说明：
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崔珊珊, 王鑫钰, 葛园梦, 等. 有无电化学反应下SOFC流道流动均匀性对比研究[J]. 储能科学与技术, XXXX, XX(XX): 1-14.

Cui Shanshan, Wang Xinyu, Ge Yuanmeng, et al. Comparative Study on Flow Uniformity in SOFC Channels with and without Electrochemical Reactions[J]. Energy Storage Science and Technology, XXXX, XX(XX): 1-14.
崔珊珊, 王鑫钰, 葛园梦, 等. 有无电化学反应下SOFC流道流动均匀性对比研究[J]. 储能科学与技术, XXXX, XX(XX): 1-14. DOI： 10.19799/j.cnki.2095-4239.2026.0468.

Cui Shanshan, Wang Xinyu, Ge Yuanmeng, et al. Comparative Study on Flow Uniformity in SOFC Channels with and without Electrochemical Reactions[J]. Energy Storage Science and Technology, XXXX, XX(XX): 1-14. DOI： 10.19799/j.cnki.2095-4239.2026.0468.

摘要

针对固体氧化物燃料电池（Solid Oxide Fuel Cell，SOFC）流道内气体分配不均导致的反应物供应不足、局部贫氧和运行稳定性下降问题，建立了SOFC单元电池三维多物理场耦合模型。通过设置无反应纯流动工况和电化学反应耦合工况，对比分析两类工况下阳极与阴极流道压力损失和流动均匀性差异；结合不同燃料利用率工况，分析阴极氧气浓度分布和反应区域变化特征，并建立阳极压降误差预测模型。结果表明，燃料利用率升高会使反应中心向入口侧偏移，阴极氧气消耗区域前移，氧气摩尔分数分布不均匀程度加剧。与无反应纯流动工况相比，电化学反应耦合工况下阳极和阴极压降分别降低15.7%和22.6%，说明反应物消耗、产物生成及局部物性变化会改变原有压力分布。基于5%～70%燃料利用率工况建立的阳极压降误差预测模型拟合优度为0.99698，在80%燃料利用率下预测偏差为0.228%，可为相同结构和运行条件下的阳极压降修正提供参考。流动均匀性分析表明，反应耦合作用会引起速度场重新分配，使纵向截面和横向并联流道的流动均匀性均出现下降，最大下降幅度为1.3%。结果表明，电化学反应耦合会同时影响SOFC内部气体浓度、压降和流动均匀性，相关结论可为SOFC流场结构设计和运行参数优化提供理论依据。

Abstract

To address the problems of insufficient reactant supply

local oxygen depletion

and reduced operating stability caused by uneven gas distribution in solid oxide fuel cell (SOFC) channels

a three-dimensional multiphysics coupled model of an SOFC unit cell was established. By setting a non-reaction pure-flow condition and an electrochemical-reaction coupled condition

the differences in pressure loss and flow uniformity in the anode and cathode channels under the two conditions were compared. Combined with different fuel utilization conditions

the cathode oxygen concentration distribution and reaction region variation were analyzed

and an anode pressure drop error prediction model was established. The results show that increasing fuel utilization shifts the reaction center toward the inlet side

moves the cathode oxygen consumption region upstream

and intensifies the nonuniformity of oxygen mole fraction distribution. Compared with the non-reaction pure-flow condition

the anode and cathode pressure drops under the electrochemical-reaction coupled condition decrease by 15.7% and 22.6%

respectively

indicating that reactant consumption

product generation

and local property variations modify the original pressure distribution. The anode pressure drop error prediction model established based on 5%–70% fuel utilization conditions has a goodness of fit of 0.99698

and the prediction deviation at 80% fuel utilization is 0.228%

which can provide a reference for anode pressure drop correction under the same structure and operating conditions. Flow uniformity analysis shows that reaction coupling causes redistribution of the velocity field

leading to decreases in flow uniformity in both longitudinal sections and transverse parallel channels

with a maximum decrease of 1.3%. The results indicate that electrochemical-reaction coupling simultaneously affects gas concentration

pressure drop

and flow uniformity inside the SOFC

providing a theoretical basis for SOFC flow field structure design and operating parameter optimization.

关键词

Keywords

references

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