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

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Study on the Electrochemical Characteristics of Lithium Ion Doping to Cathode for the Lithium Ion Capacitor

리튬이온 커패시터의 음극도핑 및 전기화학특성 연구

  • CHOI, SEONGUK (Graduate. School, Dep, Green Energy, Hoseo University) ;
  • PARK, DONGJUN (Graduate. School, Dep, Green Energy, Hoseo University) ;
  • HWANG, GABJIN (Graduate. School, Dep, Green Energy, Hoseo University) ;
  • RYU, CHEOLHWI (Graduate. School, Dep, Green Energy, Hoseo University)
  • 최성욱 (호서대학교 일반대학원 그린에너지공학과) ;
  • 박동준 (호서대학교 일반대학원 그린에너지공학과) ;
  • 황갑진 (호서대학교 일반대학원 그린에너지공학과) ;
  • 유철휘 (호서대학교 일반대학원 그린에너지공학과)
  • Received : 2015.08.18
  • Accepted : 2015.10.30
  • Published : 2015.10.30
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Abstract

Lithium Ion capacitor (LIC) is a new storage device which combines high power density and high energy density compared to conventional supercapacitors. LIC is capable of storing approximately 5.10 times more energy than conventional EDLCs and also have the benefits of high power and long cycle-life. In this study, LICs are assembled with activated carbon (AC) cathode and pre-doped graphite anode. Cathode material of natural graphite and artificial graphite kinds of MAGE-E3 was selected as the experiment proceeds. Super-P as a conductive agent and PTFE was used as binder, with the graphite: conductive agent: binder of 85: 10: 5 ratio of the negative electrode was prepared. Lithium doping condition of current density of $2mA/cm^2$ to $1mA/cm^2$, and was conducted by varying the doping. Results Analysis of Inductively Coupled Plasma Spectrometer (ICP) was used and a $1mA/cm^2$ current density, $2mA/cm^2$, when more than 1.5% of lithium ions was confirmed that contained. In addition, lithium ion doping to 0.005 V at 10, 20 and $30^{\circ}C$ temperature varying the voltage variation was confirmed, $20^{\circ}C$ cell from the low internal resistance of $4.9{\Omega}$ was confirmed.

Keywords

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