Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Preparation and Characterization of SPAES/SPVdF-co-HFP Blending Membranes for Polymer Electrolyte Membrane Fuel Cells

고분자 전해질 연료전지용 술폰화된 폴리(아릴렌 이써 설폰)/SPVdF-co-HFP 브렌딩 멤브레인의 제조 및 특성 분석

  • PARK, CHUL JIN (Department of Energy Storage/Conversion Engineering of Graduate School, Hydrogen and Fuel Cell Research Center, Chonbuk National University) ;
  • KIM, AE RHAN (R&D Center for CANUTECH, Business Incubation Center, Chonbuk National University) ;
  • YOO, DONG JIN (Department of Energy Storage/Conversion Engineering of Graduate School, Hydrogen and Fuel Cell Research Center, Chonbuk National University)
  • 박철진 (전북대학교 대학원 공과대학교 에너지저장.변환공학과 및 수소.연료전지 연구센터) ;
  • 김애란 (전북대학교 창업보육센터내 캔유텍 연구개발센터) ;
  • 유동진 (전북대학교 대학원 공과대학교 에너지저장.변환공학과 및 수소.연료전지 연구센터)
  • Received : 2019.06.01
  • Accepted : 2019.06.30
  • Published : 2019.06.30
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Abstract

In this work, preparation and characterizations of hybrid membranes containing sulfonated poly(arylene ether sulfone) (SPES) and sulfonated poly(vinylidene fluoride-co-hexafluoropropylene) (SPVdF-co-HFP) (20, 30 or 40 wt%) were carried out. The structure of hybrid membranes was confirmed using X-ray diffraction (XRD) analysis and the Fourier transform infrared (FT-IR) spectroscopy. The prepared SPAES/SPVdF-30 membrane exhibits higher ionic conductivity of 68.9 mS/cm at $90^{\circ}C$ and 100% RH. Besides, the other studies showed that the hybrid membrane has good oxidation stability, thermal stability, and mechanical stability. Thus, we believe that the prepared hybrid membrane is suitable for the development of membranes for fuel cell applications.

Keywords

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Fig. 1. Chemical structures of (a) SPAES and (b) SPVdF-co-HFP

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Fig. 2. FT-IR spectrum of (a) SPAES, (b) SPVdF-co-HFP, (c) SPAES/SPVdF-20, (d) SPAES/SPVdF-30, and (e) SPAES/SPVdF-40

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Fig. 3. XRD patterns of (a) SPAES, (b) SPVdF-co-HFP, and (c) SPAES/SPVdF-30

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Fig. 4. Water contact angles of SPAES and hybrid membranes

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Fig. 5. TGA patterns of SPAES, SPVdF-co-HFP and hybrid membranes

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Fig. 6. Stress-strain behaviors of SPAES, SPVdF-co-HFP and hybrid membranes

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Fig. 7. Ionic conductivity plots of SPVdF-co-HFP, and hybird membranes (RH 100%)

Table 1. Oxidation stability and thermal stability of SPAES, SPVdF-co-HFP, and hybrid membranes

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Table 2. Water content (WC), ion exchange capacity (IEC), and ionic conductivity of SPAES, SPVdF-co-HFP and hybrid membranes

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