Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Charge Distribution in a capacitor observed by PEA Method

PEA법에 의한 캐패시터내 전하분포 측정

  • Endrowednes, Kuantama (Department of Electrical and electronic Engineering, Kyungsung University) ;
  • Han, Deok-Woo (Department of Electrical and electronic Engineering, Kyungsung University) ;
  • Kwak, Dong-Joo (Department of Electrical and electronic Engineering, Kyungsung University) ;
  • Sung, Youl-Moon (Department of Electrical and electronic Engineering, Kyungsung University)
  • Published : 2008.07.16
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Abstract

The use of the pulsed electro acoustic (PEA) method allowed us to perform the direct observations of spatio-temporal charge distributions in Electric double layer capacitors (EDLCs) based on polarizable nanoporous carbonaceous electrode. The negative charge density became the maximum, about 205 $C/m^3$ at the region where was near to collector layer in EDLCs for case $V_{DC}$ = 2.5 V, while the positively charged density became the maximum, about 61.1 $C/m^3$ at the region where it was located around the cathode layer. The PEA measurement used here is a very useful method to quantitively investigates the spatio-temporal charge distribution in EDLCs.

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