직접개미산 연료전지용 전해질막으로서 sPAES 막과 sPEEK 막의 특성

정재현; 송명현; 정회범; 이무석; 이동훈; 추천호; 나일채; 박권필; Jae-Hyeon Jeong; Myung-Hyun Song; Hoi-Bum Chung; Moo-Seok Lee; Dong-Hoon Lee; Cheun-Ho Chu; Il-Chai Na; Kwon-Pil Park

Korean Chemical Engineering Research, Vol.53, No.6, 690-694, December, 2015

DOI10.9713/kcer.2015.53.6.690 Export Citation

직접개미산 연료전지용 전해질막으로서 sPAES 막과 sPEEK 막의 특성

Characteristics of sPAES Membrane and sPEEK Membrane for Direct Formic Acid Fuel Cell

정재현, 송명현, 정회범, 이무석¹, 이동훈¹, 추천호², 나일채³, 박권필 ^†

순천대학교, 57940 전남 순천시 매곡동 315
¹코오롱인더스트리(주) Eco연구소 중앙기술원, 16910 경기도 용인시 기흥구 마북동 207-2
²(주)ETIS, 10122 경기도 김포시 고촌읍 풍곡리 431-1
³(주)CNL Energy, 57922 전남 순천시 매곡동 315

Jae-Hyeon Jeong, Myung-Hyun Song, Hoi-Bum Chung, Moo-Seok Lee¹, Dong-Hoon Lee¹, Cheun-Ho Chu², Il-Chai Na³, and Kwon-Pil Park^†

Sunchon National University, 315 Maegok-dong, Suncheon-si, Jeonnam-do 57940, Korea
¹Kolon Research Institute, 207-2 Mabuk-dong, Giheung-gu, Youngin-si, Gyunggi-do 16910, Korea
²ETIS Co, Punggok-ri, Gochon-eup, Gimpo-si, Gyeonggi-do 10122, Korea
³CNL Energy Co, 315 Maegok, Suncheon, Jeonnam 57922, Korea

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초록

최근에 직접 액체 연료전지 중에서 직접 개미산 연료전지(Direct Formic Acid Fuel Cells, DFAFC)가 활발히 연구되고 있다. 불소계막을 대신할 저가의 탄화수소막이 DFAFC막으로 주목받고 있다. 본 연구에서는 sulfonated poly(etherether ketone ketone, sPEEK)막과 Poly(arylene ether sulfone)(PAES)막을 사용해 Nafion 막과 그 특성을 DFAFC 조건에서 비교하였다. 탄화수소계막의 개미산 투과 전류밀도가 240~250mA/cm2로 불소계인 Nafion 211 막의 600mA/cm2 보다 낮았다. sPEEK MEA(Membrane and Electrode Assembly)와 Nafion 211 MEA의 막 저항이 서로 비슷해 I-V 성능도 거의 같았다. 개미산 투과도가 낮은 sPEEK MEA가 Nafion 211 MEA보다 안정함을 보였다.

Recently, direct formic acid fuel cells (DFAFC) among direct liquid fuel cells is studied actively. Economical hydrocarbon membranes alternative to fluorinated membranes for DFAFC’s membrane are receiving attention. In this study, characteristics of sulfonated poly(ether ether ketone, sPEEK) and sulfonated poly(arylene ether sulfone, PAES) membranes were compared with Nafion membrane at DFAFC operation condition. Formic acid crossover current density of hydrocarbon membranes were lower than that of Nafion 211 fluorinated membrane. I-V performance of sPEEK MEA(Membrane and Electrode Assembly) was similar to that of Nafion 211 MEA due to similar membrane resistance each other. sPEEK MEA with low formic acid crossover showed higher stability compared with Nafion 211 MEA.

Keywords:DFAFC;Crossover;sPAES;sPEEK;Performance;Stability

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