Capacitance properties of activated Ketjenblack as an electrode active-material for an electric double layer capacitor
Year: 2019
Type: article
Abstract: ★★★★ ) 炭 素 TANSO 2019［No.289］139-147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 Capacitance properties of activated Ketjenblack as an electrode active-material for an electric double layer capacitor 白石壮志 a) , * ，川口 忍 a) ，島袋 出 a) ，畠山義清 a) Soshi Shiraishi a), * , Shinobu Kawaguchi a) , Izuru Shimabukuro a) and Yoshikiyo Hatakeyama a)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.
Source: TANSO
Authors: Soshi Shiraishi, Shinobu Kawaguchi, Izuru Shimabukuro, Yoshikiyo Hatakeyama
Institution: Gunma University
Language: English
Field: Materials Science
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4244955360