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| 1 | Impact of Thickness of Polymer Electrolyte Membrane on Temperature Distributions in Single Cell of Polymer Electrolyte Fuel Cell Operated at High Temperature显示文摘 | Akira Nishimura Yusuke Sato Masato Yoshimura Satoru Kamiya Masafumi Hirota | 2018 | Journal of Energy and Power Engineering2018，12，2： | 4 |
| 2 | Impact of Thickness of Polymer Electrolyte Membrane and Gas Diffusion Layer on Temperature Distributions in Polymer Electrolyte Fuel Cell Operated at Temperature around 90℃显示文摘Polymer Electrolyte Fuel Cell(PEFC)is desired to be operated at temperature around 90℃ for stationary applications during the period from 2020 to 2025 in Japan.It can be expected thinner polymer electrolyte membrane(PEM)and gas diffusion layer(GDL)would promote the power generation performance of PEFC at this temperature.The aim of this study is to understand the impact of thickness of PEM and GDL on the temperature profile of interface between PEM and catalyst layer at the cathode(i.e.,the reaction surface)in a single PEFC with an initial operation temperature(Tini).An 1D multi-plate heat transfer model based on temperature data of separator measured using thermograph in power generation process was developed to evaluate temperature of the reaction surface(Treact).This study investigated the effect of Tini,flow rate and relative humidity of supply gas on Treact distribution.The study finds that when using thin GDL,the even distribution of Treact – Tini is obtained irrespective of thickness of PEM,Tini and relative humidity conditions.Treact – Tini using Nafion 115 is higher than the other thin PEMs irrespective of Tini and relative humidity conditions.It can be concluded that the even temperature distribution could be achieved by using thin PEM and GDL. | Akira Nishimura Yusuke Sato Satoru Kamiya Tatsuya Okado Kouhei Yamamoto Masafumi Hirota Eric Hu | 2019 | Journal of Energy and Power Engineering2019，13，3： | 2 |
| 3 | Impact Analysis of MPL on a PEFC Cell’s Temperature Distribution with Thin PEM and GDL for Operating at Higher Temperature than Usual显示文摘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. | Akira Nishimura Nozomu Kono Kyohei Toyoda Yuya Kojima Mohan Lal Kolhe | 2021 | Journal of Energy and Power Engineering2021，15，2： | 1 |
| 4 | Numerical Analysis of Temperature Distributions in Single Cell of PEFC by Heat Transfer Model Considering Vapor Transfer显示文摘Polymer Electrolyte Fuel Cell(PEFC)is required to be operated at temperature at 100℃ for fuel cell vehicle applications during the period from 2020 to 2025 in Japan.It is expected that micro porous layer(MPL)and thinner polymer electrolyte membrane(PEM)would enhance the power generation performance of PEFC at this temperature.The key objective of this study is to analyse the impact of MPL and thickness of PEM on the temperature distributions of interface between the PEM and catalyst layer at the cathode(i.e.,the reaction surface)in a single PEFC.A 1D multi-plate heat transfer model,considering vapor transfer,which is based on temperature data of separator measured using thermograph in power generation process.It is developed to evaluate temperature at the reaction surface.This study is investigated the effect of flow rate and relative humidity of supply gases on temperature distribution on reaction surface.The study reveals that the impact of flow rate of supply gas on temperature distribution on reaction surface is smaller with and without MPL.It is observed that the even temperature distribution on reaction surface as well as higher power generation performance can be obtained with MPL irrespective of thickness of PEM and relative humidity conditions. | Akira Nishimura Hiroya Fukuoka Kohei Yamamoto Tatsuya Okado Yuya Kojima Masafumi Hirotaand Mohan Lal Kolhe | 2020 | Journal of Energy and Power Engineering2020，14，1： | 0 |
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