Enhancement of the capacitance for electrochemical capacitor electrodes utilizing metal-free organic compounds

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K21478
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Device related chemistry; Organic and hybrid materials
• Research Institution: Aichi Institute of Technology
• Principal Investigator: Itoi Hiroyuki 愛知工業大学, 工学部, 准教授 (40648789)
• Research Collaborator: OHZAWA Yoshimi 愛知工業大学, 工学部, 教授 (80278225)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: 電気化学キャパシタ / 多孔質炭素 / レドックス化合物 / 擬似容量 / 電気二重層キャパシタ / 無溶媒合成

Outline of Final Research Achievements

In this study, we hybridized redox organic compounds, 2,5-dichloro benzoquinone (DCBQ), with porous carbon black, ketjen black (KB), to prepare high-performance electrochemical capacitor electrodes through a solvent-free method. Through this method, the KB and DCBQ weight ratios can be accurately controlled because DCBQ molecules are completely adsorbed inside the pores of KB in a gas phase without any expansion of the KB particles. Electrochemical measurements revealed that the pseudocapacitance of DCBQ exhibited the higher volumetric capacitance and power density and longer cycle lifetimes than the electric double-layer capacitance, both of which are generated inside the pores of KB.

Free Research Field

電気化学