Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Electrochemical Properties of Activated Carbon Supecapacitor Containing Sulfonated Polypropylene Separator Coated with a Hydrogel Polymer Electrolyte

하이드로겔 고분자 전해질이 코팅된 술폰화 폴리프로필렌 격리막을 포함하는 활성탄 수퍼커패시터 특성

  • Yoon, Choong Sub (Department of Chemical and Biological Engineering/Adranced Materials Eng., Hanbat National University) ;
  • Ko, Jang Myoun (Department of Chemical and Biological Engineering/Adranced Materials Eng., Hanbat National University) ;
  • Latifatu, Mohammed (Department of Chemical and Biological Engineering/Adranced Materials Eng., Hanbat National University) ;
  • Lee, Hae Soo (Department of Chemical and Biological Engineering/Adranced Materials Eng., Hanbat National University) ;
  • Lee, Young-Gi (Research Section of Power Control Devices, Electronics & Telecommunications Research Institute (ETRI)) ;
  • Kim, Kwang Man (Research Section of Power Control Devices, Electronics & Telecommunications Research Institute (ETRI)) ;
  • Won, Jung Ha (Department of Chemical and Biological Engineering/Adranced Materials Eng., Hanbat National University) ;
  • Jo, Jeongdai (Department of Printed Electronics, Korea Institute of Machinery and Materials (KIMM)) ;
  • Jang, Yunseok (Department of Printed Electronics, Korea Institute of Machinery and Materials (KIMM)) ;
  • Kim, Jong Huy (Energy Storage Department, Korea Institute of Energy Research (KIER))
  • 윤충섭 (한밭대학교 화학생명공학과/신소재공학과) ;
  • 고장면 (한밭대학교 화학생명공학과/신소재공학과) ;
  • 모하메드 라티파투 (한밭대학교 화학생명공학과/신소재공학과) ;
  • 이해수 (한밭대학교 화학생명공학과/신소재공학과) ;
  • 이영기 (한국전자통신연구원 전력제어소자연구실) ;
  • 김광만 (한국전자통신연구원 전력제어소자연구실) ;
  • 원정하 (한밭대학교 화학생명공학과/신소재공학과) ;
  • 조정대 (한국기계연구원 인쇄전자연구실) ;
  • 장윤석 (한국기계연구원 인쇄전자연구실) ;
  • 김종휘 (한국에너지기술연구원 에너지저장연구단)
  • Received : 2014.03.05
  • Accepted : 2014.04.02
  • Published : 2014.10.01
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Abstract

Sulfonated polypropylene (S-PP) is prepared by sulfuric acid-acetone aldol condensation reaction of polypropylene (PP) separator to yield hydrophilic separator surface with a moderate amount of $-SO_3H$ groups. Activated carbon supercapacitor is also fabricated adopting the S-PP separator coated with potassium polyacrylate (PAAK) hydrogel polymer electrolyte. As a result, the hydrophilic surface of S-PP separator involves better physical and electrochemical properties such as decrease in contact angle, improvements of wettability, electrolyte uptake, and ionic conductivity to give higher specific capacitance and long cycle-life.

폴리프로필렌(PP) 격리막의 표면을 황산-acetone 알돌 응축반응을 통해 술폰화 폴리프로필렌(S-PP) 격리막을 제조하고 표면기 분석과 접촉각 측정을 통해 $-SO_3H$ 그룹이 다량 분포된 친수성 표면으로 전환되었음을 밝혔다. 또한 potassium polyacrylate (PAAK) 하이드로겔 고분자 전해질로 S-PP 표면을 코팅하고 이를 활성탄 수퍼커패시터에 적용하여 그 전기화학적 특성을 조사하였다. 결과적으로 S-PP 격리막은 친수성 표면으로 인하여 비록 전기화학적 안정성은 감쇠하지만, 접촉각 감소, 젖음성 향상, 전해질 함침량 증대, 이온전도도 향상, 계면저항 감소 등의 효과를 발생시켜 결국 커패시터적 특성의 향상, 즉 비축전용량과 사이클 수명의 향상을 구현할 수 있다.

Keywords

References

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