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Language: korean

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received March 7, 2014
Accepted April 12, 2014

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

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PEMFC MEA 제조 방법에 따른 성능 및 내구성

Performance and Durability of PEMFC MEAs Fabricated by Various Methods

정재현 송명현¹ 정회범² 나일채³ 이정훈³ 이호³ 박권필^†

Jaehyeun Jeong Myunghyun Song¹ Hoibum Chung² Ilchai Na³ Junghoon Lee³ Ho Lee³ Kwonpil Park^†

순천대학교 화학공학과, 540-742 전남 순천시 매곡동 315 ¹순천대학교 전기제어공학과, 540-742 전남 순천시 매곡동 315 ²순천대학교 기계공학과, 540-742 전남 순천시 매곡동 315 ³(주)CNL Energy, 540-742 전남 순천시 매곡동 315

Department of Chemical Engineering, Sunchon National University, 315 Maegok-dong, Suncheon, Jeonnam 540-742, Korea ¹Department of Electric Control Engineering, Sunchon National University, 315 Maegok-dong, Suncheon, Jeonnam 540-742, Korea ²Department of Mechanical Engineering, Sunchon National University, 315 Maegok-dong, Suncheon, Jeonnam 540-742, Korea ³CNL Energy Co, 315 Maegok-dong, Suncheon, Jeonnam 540-742, Korea

parkkp@sunchon.ac.kr

Korean Chemical Engineering Research, October 2014, 52(5), 558-563(6), 10.9713/kcer.2014.52.5.558 Epub 1 October 2014

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Abstract

고분자 전해질 연료전지의 성능과 내구성에 미치는 막 전극 접합체(MEA) 제조방법의 영향에 대해 연구하기 위해 닥터 블레이드 방법, 스프레이 방법, 스크린 프린트 방법 그리고 스크린 프린트+스프레이 방법에 의해 MEA를 제조하였다. 제조된 MEA를 체결한 단위전지의 성능을 측정해 각 MEA의 초기 성능을 비교하였다. 10초간 0.6V 일정전압 유지 후 0.9 V에서 10초간 유지하는 전극 열화 가속 시험(AST)을 각 MEA 적용해 내구성을 시험하였다. 전극 열화 가속 시험 6,000 사이클 전 후 I-V 곡선, 임피던스, 순환 전압측정법(CV), 선형쓸음 전기량측정법(LSV), 투과전자현미경 (TEM) 등을 측정하였다. 닥터 블레이드 방법에 의해 제조한 MEA의 초기 성능이 제일 높았고, 스크린 프린트+스프레이 방법에 의해 제조한 MEA가 제일 낮은 열화 속도를 보였다.

To study the effects of fabrication methods on the performance and durability of polymer electrolyte membrane fuel cells (PEMFCs), membrane-electrode assemblies (MEAs) were fabricated using a Dr blade method, a spray method, screen print method and screen print + spray method. The performance of single cells assembled with the prepared MEAs were initially measured and compared. Electrode accelerated stress testing (AST) involving a potentiostatic stepwave with 10 s at 0.6 V followed by 30 s at 0.9 V was applied to test durability of MEAs. Before and after 6,000cycles of the AST, I-V curves, impedance spectra, cyclic voltammograms, linear sweep voltammetry (LSV) and transmission electron microscope (TEM) were measured. Under the operating conditions, the Dr Blde MEA exhibited the highest initial performance. After electrode accelerated stress testing, screen print + spray MEA showed lowest degradation rate.

Keywords

PEMFC Fabrication MEA Performance Degradation

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