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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 September 5, 2014
Accepted October 2, 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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고분자전해질 연료전지 구동 중 수소투과도 측정

Measurement of Hydrogen Crossover During PEMFC Operation

정재진 정재현 김세훈¹ 안병기¹ 고재준¹ 박권필^†

Jaejin Jeong Jaehyeun Jeong Saehoon Kim¹ Byungki Ahn¹ Jaijoon Ko¹ Kwonpil Park^†

순천대학교 화학공학과, 540-742 전남 순천시 매곡동 315 ¹현대자동차 환경기술연구소, 446-912 경기도 용인시 기흥구 마북동 104

Department of Chemical Engineering, Sunchon National University, 315 Maegok-dong, Suncheon, Jeonnam 540-742, Korea ¹HMC Eco Technology Research Institute, 104 Mabuk-dong, Giheung-gu, Youngin-si, Gyeonggi 446-912, Korea

parkkp@sunchon.ac.kr

Korean Chemical Engineering Research, August 2015, 53(4), 412-416(5), 10.9713/kcer.2015.53.4.412 Epub 29 July 2015

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Abstract

고분자 막 성능 평가 및 내구성 평가에 이용하기 위해 고분자전해질 연료전지(PEMFC) 구동 중에 수소 크로스오버측정이 필요하다. 수소 크로스오버 측정 시에 불활성 기체 대신에 공기를 cathode에 공급하면서 기체 크로마토그래프로 수소 농도를 cathode 출구에서 분석하였다. PEMFC 구동 중 고분자 막을 통과한 수소는 cathode에서 산소와 반응해 불활성 가스를 공급할 때에 비해 수소 농도가 감소하였다. cathode 공기 공급 유량이 증가하면 수소 농도가 감소했고, 셀의 온도와 습도, 압력이 증가하면 cathode의 수소 농도는 증가했다. 일반적인 PEMFC 구동 조건에서 120 mA/cm2 전류밀도에서 수소농도는 약 5.0 ppm이었다.

To evaluate the performance and durability of membrane, measurement of hydrogen crossover is needed during PEMFC(Proton Exchange Membrane Fuel Cells) operation. In this work, concentration of hydrogen at cathode was analysed by gas chromatograph during operation suppling with air instead of inert gas into the cathode. The hydrogen permeated through membrane reacted with oxygen at cathode and then the concentration of hydrogen was lower than in case inert gas was supplied. Hydrogen concentration decreased as the flow rate of air increased at cathode. Increase of temperature, humidity and pressure of anode gas enhanced the hydrogen concentration at cathode. The hydrogen concentration was about 5.0 ppm at current density of 120 mA/cm2 during general PEMFC operation.

Keywords

PEMFC Hydrogen Crossover Gas Chromatograph Degradation Membrane

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