文献类型：期刊文献

英文题名：Operation Window of Integrated Methanol Steam Reformer/High-Temperature Proton Exchange Membrane Fuel Cells: A Three-Dimensional Numerical Study

作者：Rui, Hongbo[1];Qiu, Runfa[1];Xu, Jing[1,2];Cao, Chenxi[3];Zhu, Minghui[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Guangxi Univ, Sch Chem & Chem Engn, Guangxi Key Lab Petrochem Resource Proc & Proc Int, Nanning 530004, Peoples R China;[3]East China Univ Sci & Technol, Key Lab Smart Mfg Energy Chem Proc, Minist Educ, Shanghai 200237, Peoples R China

年份：2025

卷号：31

期号：5

起止页码：463

外文期刊名：TRANSACTIONS OF TIANJIN UNIVERSITY

收录：EI(收录号：20254619482664);WOS:【ESCI(收录号:WOS:001607941200001)】；

基金：M. Zhu thanks the research funding sponsored by the National Key R&D Program of China (No. 2022YFB3805504), Shanghai Pilot Program for Basic Research (No. 22TQ1400100-7), the Basic Research Program of Science and Technology Commission of Shanghai Municipality (No. 22JC1400600) and the Fundamental Research Funds for the Central Universities. C. Cao acknowledges the funding from Natural Science Foundation of Shanghai (No. 24ZR1414900) and the State Key Laboratory of Industrial Control Technology (No. ICT2024A27).

语种：英文

外文关键词：Methanol steam reforming; High-temperature proton exchange membrane fuel cell; Computational fluid dynamics; Multiphysics modeling; Integration

摘要：Stack-integrated methanol steam reformer (MSR)/high-temperature proton exchange membrane fuel cell (HT-PEMFC) systems enable simultaneous hydrogen production and power generation within monolithic devices, significantly reducing system complexity and costs. However, in situ heat exchange between endothermic reforming layers and exothermic fuel cell layers creates complex thermal interactions under variable loads, posing a critical challenge to stable operation. Here, we systematically evaluate the adiabatic operational limits of a fully coupled stack-integrated MSR/HT-PEMFC using three-dimensional computational fluid dynamics. Although thermoneutral operation can be achieved at 0.4 A/cm2 under isothermal conditions, adiabatic operation introduces temperature gradients exceeding 30 degrees C and elevates reformate carbon monoxide (CO) concentrations beyond 2000 x 10-6, which can irreversibly degrade fuel cell performance. Parametric analysis reveals a critical trade-off: reducing voltage or increasing methanol feed rates lowers CO levels by 38% but degrades system efficiency by 15%, highlighting an inherent safety-efficiency conflict in adiabatic systems. These findings underscore the necessity of coordinated voltage and methanol feed flow regulation, as well as strategic decoupling of MSR and PEMFC for practical implementation.