Journal of the Korean Electrochemical Society (전기화학회지)

The Korean Electrochemical Society (한국전기화학회)
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Development of Ionomer Binder Solutions Using Polymer Grinding for Solid Alkaline Fuel Cells

고분자 분쇄 기술을 활용한 고체 알칼리연료전지용 이오노머 바인더 용액 개발

  • Shin, Mun-Sik (Department of Environmental Engineering, College of Engineering, Sangmyung University) ;
  • Kim, Do-Hyeong (Department of Environmental Engineering, College of Engineering, Sangmyung University) ;
  • Kang, Moon-Sung (Department of Environmental Engineering, College of Engineering, Sangmyung University) ;
  • Park, Jin-Soo (Department of Environmental Engineering, College of Engineering, Sangmyung University)
  • 신문식 (상명대학교 공과대학 환경공학과) ;
  • 김도형 (상명대학교 공과대학 환경공학과) ;
  • 강문성 (상명대학교 공과대학 환경공학과) ;
  • 박진수 (상명대학교 공과대학 환경공학과)
  • Received : 2016.08.14
  • Accepted : 2016.08.25
  • Published : 2016.08.31
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Abstract

In this study, an anion-exchange ionomer solution was prepared by grinding poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) in liquid nitrogen for solid alkaline fuel cells (SAFCs). Type of quaternized PPO (QPPO) solutions was controlled by grinding time. The ionomer binder solutions were characterized in terms of dispersity, particle size, and electrochemical properties. As a result, ionomer binder solutions using grinded polymer showed higher dispersion and smaller particle size distribution than that using non-grinded polymer. The highest ionic conductivity and IEC of the membrane recast by using BPPO-G120s were $0.025S\;cm^{-1}$ and $1.26meq\;g^{-1}$, respectively.

본 연구에서는 고체알칼리 연료전지용 이오노머 바인더 용액 제조를 위하여 poly(2,6-dimethyl-1,4-phenylene oxide)(PPO)를 동결 분쇄하고 4급 암모늄화 반응을 진행하여 음이온 전도성 이오노머(quaternized PPO, QPPO) 용액을 제조하였다. QPPO 이오노머 바인더 용액의 종류를 고분자의 분쇄 시간을 통하여 제조하였고, 이에 따른 분산도, 입자의 크기 및 전기화학적 성능 등을 분석하였다. 이를 통해 기존의 비 분쇄 고분자를 활용하여 제조한 이오노머 바인더 용액보다 분쇄 고분자를 활용한 이오노머 바인더 용액이 높은 고분자 분산도와 낮은 입자 크기를 확보하였다. 제조한 이오노머 바인더 용액(BPPO-G120s)의 최대 이온전도도는 $0.025S\;cm^{-1}$이었으며, 이온교환용량은 $1.26meq\;g^{-1}$을 보였다.

Keywords

References

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