质子交换膜电解池产热与温度分布研究  

Study on heat generation and temperature distribution in proton exchange membrane electrolysis cell

作　　者：罗马吉[1,2] 徐征[1,2] 陈奔[1,2] LUO Maji;XU Zheng;CHEN Ben(Hubei Key Laboratory of Advanced Technology for Automotive Components,Wuhan University of Technology,Wuhan 430070,China;Hubei Key Laboratory of Fuel Cells,Wuhan University of Technology,Wuhan 430070,China)

机构地区：[1]武汉理工大学现代汽车零部件技术湖北省重点实验室,湖北武汉430070 [2]武汉理工大学燃料电池湖北省重点实验室,湖北武汉430070

出　　处：《华中科技大学学报(自然科学版)》2025年第1期143-149,共7页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(52176200).

摘　　要：针对数值模拟时常将质子交换膜电解池(PEMEC)视为等温状态的问题,建立了稳态、三维、两相、非等温的PEMEC单流道模型,研究了等温模型和非等温模型对模拟结果的影响,分析了PEMEC的产热规律和温度分布.结果表明:非等温模型能更准确模拟PEMEC的工作性能;相同工作电压下,非等温模型计算得到的电流密度值高于等温模型,且工作电压越高,二者相差越大;工作电压高于1.4 V时,总产热量呈抛物线趋势增加,阳极催化层(ACL)、阴极催化层(CCL)、质子交换膜(PEM)的产热量占比超过98%,ACL的产热密度高于PEM和CCL;与仅阳极侧供水相比,当工作电压为2.2 V时,采用阴极顺流和逆流供水可将膜电极(MEA)的温度均匀性从0.44%分别降至0.16%和0.14%,极限温差从12.25 K降至4.13和3.69 K.In view of the problem that proton exchange membrane electrolysis cell(PEMEC)is often regarded as isothermal state in numerical simulation,a steady state,three-dimensional,two-phase and non-isothermal single-channel PEMEC model was established.The influence of isothermal model and non-isothermal model on the simulation results was studied,and the law of heat generation and temperature distribution of the PEMEC were analyzed.The results show that the non-isothermal model can simulate the performance of PEMEC more accurately.Under the same operating voltage,the current density calculated by the non-isothermal model is higher than that of the isothermal model,and the higher the operating voltage,the greater the difference between the two.When the temperature is higher than 1.4 V,the total heat generation increases in a parabolic trend,and the heat generation ratio of anode catalytic layer(ACL),cathode catalytic layer(CCL)and proton exchange membrane(PEM)exceeds 98%,and the heat generation density of ACL is higher than that of PEM and CCL.Compared with supplying water only on the anode side,at 2.2 V,using cathode co-flow and counter-flow water supply reduces the temperature uniformity of the membrane electrode assembly from 0.44%to 0.16%and 0.14%,respectively,and the maximum temperature difference decreases from 12.25 K to 4.13 K and 3.69 K.

关 键 词：质子交换膜电解池 电解水制氢 产热 温度分布 非等温模型 氢能 

分 类 号：TK91[动力工程及工程热物理]