abs

학술발표회초록보기

초록문의 abstract@kcsnet.or.kr

결제문의 member@kcsnet.or.kr

현재 가능한 작업은 아래와 같습니다.
  • 03월 07일 12시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

Simultaneous approaches for the high energy and the high power densities of electrochemical supercapacitors

등록일
2007년 2월 16일 11시 50분 43초
접수번호
1241
발표코드
금20A6심 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
금 11시 : 35분
발표형식
심포지엄
발표분야
전기화학 - Electrochemistry of Carbon Materials
저자 및
공동저자
김찬, 주용완, 김종휘1, 이완진, 양갑승
전남대학교 응용화학공학부,
1한국에너지기술연구원,
In this study, performances of hybrid supercapacitor with electrodes of carbon/RuO2 were investigated. Polyacrylonitrile(PAN) solution only or the solution dispersed with muti-wall carbon nanotube(MWCNT) were electrospun and followed by a steam activation and a deposition with RuO2.  The performances of the electrodes were investigated in 6 M of aqueous KOH solution. The electrical conductivity of the PAN based activated carbon nanofibers(ACNFs) increased from 0.42 S/cm to 0.98 S/cm by dispersions of 3wt% of MWCNT. The capacitances of the PAN only, MWCNT/PAN, RuO2/PAN. RuO2/MWCNT/PAN based ACNFs were 140, 180, 390, 530 F/g, respectively. The specific energy density (capacitance) increased by 4 times by composition with 3wt% of MWCNT and deposition of 20wt % of RuO2 , though the specific surface area was reduced by deposition of RuO2 down to 1/3 of the original values. From the other source of the material such as pitch/PAN blend based activated carbon nano-fibers, exhibited exceptionally high value of response rate of 5Hz at the face angel of 45° from the impedance measurements.

상단으로