Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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Characteristics of high energy density hybrid capacitor using metal oxide electrode

금속산화물 전극을 사용한 고 에너지밀도 하이브리드 커패시터 특성

  • Yoon, Hong-Jin (Department of Chemical Engineering, Chungbuk National Univ.) ;
  • Shin, Yoon-Sung (Department of Chemical Engineering, Chungbuk National Univ.) ;
  • Lee, Jong-Dae (Department of Chemical Engineering, Chungbuk National Univ.)
  • Received : 2011.09.03
  • Accepted : 2011.09.23
  • Published : 2011.09.30
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Abstract

The electrochemical performances of an asymmetric hybrid capacitor were investigated using $LiFePO_4$ as the positive electrode and active carbon fibers(ACF) as the negative electrode. The electrochemical behaviors of a nonaqueous hybrid capacitor were characterized by constant current charge/discharge test. The specific capacitance using $LiFePO_4$/ACF electrode turned out to be $0.87F/cm^2$ and the unit cell showed excellent cycling performance. This hybrid capacitor was able to deliver a specific energy as high as 178 Wh/kg at a specific power of 1,068 W/kg.

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References

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