Synthesis of VN/C nanoparticles with high surface area using ion-exchange method

2015 Fiscal Year Final Research Report

• Project/Area Number: 26630402
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Reaction engineering/Process system
• Research Institution: Nagasaki University
• Principal Investigator: ZHENG Guobin 長崎大学, 工学研究科, 准教授 (40346929)
• Co-Investigator(Renkei-kenkyūsha): SANO Hideaki 長崎大学, 工学研究科, 助手 (10253634)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: 窒化バナジウム / スーパーキャパシタ / 多孔質炭素 / イオン交換

Outline of Final Research Achievements

This research aimed at the development of VN/Carbon nanocomposite electrode for supercapacitor. By adding phenolsulfonic acid in resorcinol-formaldehyde solution, sRF resin with sulfonic acid groups was synthesized. The sRFC, which was obtained by carbonization and activation of sRF, had high volume of mesopores and showed very high specific capacitance. However, VN/sRFC was not successfully obtained because only small amount of vanadium was introduced into sRF resin. V2O5 nanofibers were synthesized from ion-exchanged HVO3 with addition of CNTs and other N-compounds such as urine or dicyandiamide. After nitridation at relatively low temperature, VN nanoparticles of around 10 nm were synthesized. The capacitance of VN in CNT/VN reached near 300 F/g. On another work, considering small pores in sRF resin, we developed a technology to synthesize highly porous carbon using tannic acid, which showed very high capacitance and excellent charge/discharge behavior.

Free Research Field

セラミックス材料学