Development of dense micro- and mesoporous activated carbon, derived from rice husk, for electrode of electrical double-layer capacitor

2014 Fiscal Year Final Research Report

• Project/Area Number: 24686035
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Partial Multi-year Fund
• Research Field: Power engineering/Power conversion/Electric machinery
• Research Institution: Akita University
• Principal Investigator: KUMAGAI Seiji 秋田大学, 工学(系)研究科(研究院), 准教授 (00363739)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 電気二重層キャパシタ / 活性炭 / 電極 / 蓄電 / もみ殻 / 電解液 / 多孔体

Outline of Final Research Achievements

Micro- and mesoporous activated carbon, which was intended for the electrode use of electrical double-layer capacitor, was developed. This activated carbon was prepared from rice husk, by leaching nano-size silica from carbonized rice husk to develop mesoporosity and by adding sugar to develop microporosity. When non-aqueous electrolyte or ionic liquid was used, the activated carbon displayed superior electricity-storage performance rather than commercial resin-derived activated carbon. Electrical impedance spectroscopy clarified a relationship between the porous structure and capacitive-resistive property of the rice husk-derived activated carbon.

Free Research Field

電気電子工学