Impact Analysis of MPL on a PEFC Cell’s Temperature Distribution with Thin PEM and GDL for Operating at Higher Temperature than Usual  

作　　者：Akira Nishimura Nozomu Kono Kyohei Toyoda Yuya Kojima Mohan Lal Kolhe 

机构地区：[1]Division of Mechanical Engineering,Graduate School of Engineering,Mie University,Tsu-City,Mie 514-8507,Japan [2]Faculty of Engineering and Science,University of Agder,Kristiansand No.4604,P.O.Box 422,Norway

出　　处：《Journal of Energy and Power Engineering》2021年第2期39-51,共13页能源与动力工程（美国大卫英文）

基　　金：This work is supported by Mie Prefecture IndustrialResearch Institute and the authors gratefullyacknowledge.

摘　　要：According to the New Energy and Industry Technology Development Organization(NEDO)road map 2017 of Japan,polymer electrolyte fuel cell(PEFC)system is required to be operated at 90°C and 100°C for stationary and mobility applications,respectively.However,the general PEFC,which has Nafion membrane is operated within the temperature range between 60°C and 80°C.It is important to understand the temperature distribution in a PEFC cell for analyzing performance on working life span of PEFC.This study focuses on the combination of thin polymer electrolyte membrane(PEM)and thin gas diffusion layer(GDL)to improve power generation performance under relatively higher temperature operation conditions.In addition,this study also focuses on effect of micro porous layer(MPL),which can promote the mass transfer,over temperature distribution.The key aim of this study is to analyze impact of MPL of temperature distribution on the reaction surface(Treact)of a cell of PEFC using thin PEM and GDL with variations of H2 and O2 supply flow rates and their relative humidity(RH)with changing the initial operating temperature(Tini)from 80°C to 100°C.As a result,the distribution of Treact without MPL,for anode and cathode at 80%RH and Tini at 80°C and 90°C,is higher than normal conditions.There is a small difference in temperature distribution among different RH conditions with MPL.The distributions of Treact are relatively flat and almost the same among different RH conditions without MPL at Tini=100°C,while the distributions of Treact with MPL are almost the same among different RH conditions.This study is revealed that more even temperature distribution and higher power generation performance can be obtained in the case without MPL compared to the case with MPL.

关 键 词：PEFC temperature distribution analysis MPL thin PEM and thin GDL higher temperature operation 

分 类 号：TG1[金属学及工艺—金属学]