Capacitance properties of activated Ketjenblack as an electrode active-material for an electric double layer capacitor

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  • Shiraishi Soshi
    Division of Molecular Science, Graduate School of Science and Technology, Gunma University, Japan
  • Kawaguchi Shinobu
    Division of Molecular Science, Graduate School of Science and Technology, Gunma University, Japan
  • Shimabukuro Izuru
    Division of Molecular Science, Graduate School of Science and Technology, Gunma University, Japan
  • Hatakeyama Yoshikiyo
    Division of Molecular Science, Graduate School of Science and Technology, Gunma University, Japan

Bibliographic Information

Other Title
  • 電気二重層キャパシタ用電極主材としての賦活ケッチェンブラックの容量特性
  • デンキ ニジュウソウ キャパシタヨウ デンキョクシュザイ ト シテ ノ フカツ ケッチェンブラック ノ ヨウリョウ トクセイ

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Abstract

<p>Ketjenblack (KB), which is a mesoporous carbon black, can be used as electrode active material for an electric double layer capacitor (EDLC). This paper addresses the capacitance properties of the activated KB with a high specific surface area as the electrode active material. The mesopore volume in KB was decreased by KOH-activation, while the micropores were developed to increase the specific surface area. As a result, the KOH-activated KB showed a higher volumetric capacitance as an EDLC electrode compared with the pristine KB. Additionally, it was also shown that the nitrogen-doping of the KOH-activated KB by nitrogen-monoxide produces a better volumetric capacitance and an ability to tolerate high voltages compared to the pristine KB electrode.</p>

Journal

  • TANSO

    TANSO 2019 (289), 139-147, 2019-09-01

    THE CARBON SOCIETY OF JAPAN

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