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New. Renew. Energy

[ Article ]
New & Renewable Energy
Abbreviation: New. Renew. Energy
ISSN: 1738-3935 (Print) 2713-9999 (Online)
Online publication date 26 May 2021
Received 07 Apr 2021 Revised 22 Apr 2021 Accepted 22 Apr 2021
DOI: https://doi.org/10.7849/ksnre.2021.0007

대면적 분리판의 운전 환경 불균일성을 고려한 MEA 성능최적화 방법
김성민1), 2) ; 손영준3) ; 우승희4) ; 박석희3) ; 정남기5), * ; 임성대3), *

Optimization Method for MEA Performance Considering the Non-Uniformity of Operating Condition in a Large-area Bipolar Plate
Sungmin Kim1), 2) ; Young-Jun Sohn3) ; Seunghee Woo4) ; Seok-Hee Park3) ; Namgee Jung5), * ; Sung-Dae Yim3), *
1)Student Researcher, Fuel Cell Laboratory, Korea Institute of Energy Research
2)Master Course, Graduate School of Energy Science and Technology, Chungnam National University
3)Principal Researcher, Fuel Cell Laboratory, Korea Institute of Energy Research
4)Senior Research Engineer, Fuel Cell Laboratory, Korea Institute of Energy Research
5)Associate Professor, Graduate School of Energy Science and Technology, Chungnam National University
Correspondence to : *(SDY) E-mail: jimmyim@kier.re.kr Tel: +82-42-860-3548 (NGJ) E-mail: njung@cnu.ac.kr Tel: +82-42-821-8609 Fax: +82-42-860-3104


© 2021 by the New & Renewable Energy
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We proposed an MEA development methodology that accurately measures intrinsic MEA performance while considering the uneven reaction environments formed inside a large-area BP. To facilitate measurement of the inherent MEA performance, we miniaturized the active area of the MEA to 3 cm2, and prepared two MEAs with different ionomer contents of 0.65 and 0.80 (I/C). By simulating the operating conditions of a 100 cm2 BP at the inlet (I), center (C), and outlet (O), the oxygen concentration and relative humidity were determined to be 20.7, 13.8, 11.7%, and 50, 66.1, and 70.1% respectively. We measured the performance and electrochemical analysis of the prepared MEAs under the three simulated conditions. Based on the results of statistical analysis of the evaluated MEA performance data, I/C 0.65 MEA had a higher average performance and lower performance deviation than I/C 0.80 MEA. Hence, it can be concluded that an I/C 0.65 MEA is a more effective MEA for large-area BP. Based on the above research process, we confirmed the effectiveness of the proposed MEA development methodology.


Keywords: Polymer electrolyte membrane fuel cell, Bipolar plate, Membrane electrode assembly, Ionomer to carbon ratio, Oxygen concentration, Relative humidity
키워드: 고분자전해질연료전지, 분리판, 막전극접합체, 이오노머 대 카본 비율, 산소 농도, 상대습도