화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Polymer(Korea), Vol.36, No.6, 756-760, November, 2012
Export Citation
KOH 활성화가 슈퍼커패시터용 콜타르 피치 활성탄소의 전기화학적 성능에 미치는 영향
Influence of KOH Activation on Electrochemical Performance of Coal Tar Pitch-based Activated Carbons for Supercapacitor
허지훈, 서민강1, 김학용, 김익준2, 박수진3, †
  • 전북대학교 유기소재파이버 공학과
  • 1전주기계탄소기술원
  • 2한국전기연구원 전지연구그룹
  • 3인하대학교 화학과
Ji-Hoon Huh, Min-Kang Seo1, Hak-Yong Kim, Ick-Jun Kim2, and Soo-Jin Park3, †
  • Department of Organic Materials and Fiber Engineering, Chonbuk National University, Jeonju 561-765, Korea
  • 1Jeonju Institute of Machinery and Carbon Composites, Jeonju 561-884, Korea
  • 2Korea Electrotechnology Research Institute, Changwon 641-120, Korea
  • 3Department of Chemistry, Inha University, Incheon 402-751, Korea
E-mail:
초록
본 연구에서는 콜타르 피치를 출발물질로 하여 KOH로 활성화시킨 슈퍼커패시터용 전극소재를 제작하였다. 콜타르 피치와 KOH의 활성화 비율을 1:4로 설정한 후 활성화 온도를 600~900 ℃까지 100 ℃ 단위로 4종류의 활성탄소를 제조한 후 피치계 활성탄소의 전기화학적 성능에 대한 KOH 활성화 온도의 영향에 관하여 고찰하였다. 또한 활성탄소의 형태학적 특성 변화를 흡착등온선과 FE-SEM을 통하여 분석하였다. 실험결과, 활성탄소의 커패시턴스는 전극 내 내부저항의 감소에 따라 증가하였는데, 이는 활성화 온도가 증가함에 따라 활성탄소 내 미세기공이 발달했기 때문이라 판단된다.
In this work, the coal tar pitch-based activated carbons (ACs) were prepared by KOH activation for electrode materials of supercapacitor. The effects of activation temperature on electrochemical performance of the ACs were investigated with cyclic voltammogram (CV) measurement. The textural and morphological properties of the ACs were measured by adsorption isotherms and field emission scanning electron microscope (FE-SEM) analyses, respectively. The experimental results indicated that the specific capacitance of the ACs increased with developing the micropore volume by activation temperature. As a result the specific capacitance of the ACs increased, owing to the development of micro pore volume of the ACs.
Keywords:coal tar pitch;KOH activation;activated carbon;supercapacitor.
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