Nitrogen-doped porous carbon materials（NPCs） have been successfully fabricated by a simple one-step pyrolysis of diethylenetriaminepentaacetic acid（DTPA） in the presence of KOH. The as-synthesized NPCs displayed a...Nitrogen-doped porous carbon materials（NPCs） have been successfully fabricated by a simple one-step pyrolysis of diethylenetriaminepentaacetic acid（DTPA） in the presence of KOH. The as-synthesized NPCs displayed a high specific surface area(3214 m;g;) and a well-defined porous structure when the annealing temperature reached 800 ℃, which showed superior electrochemical performance as supercapacitor electrode materials. Electrochemical tests showed that the NPCs achieved an impressive specific capacitance of 323 F g;at a current density of 0.5 A g;in 6 M KOH aqueous solution and an outstanding cycle stability, negligible specific capacitance decay after 5000 cycles at 10 A g;. This strategy offered a new insight into the preparation of novel carbon materials for the advanced energy storage devices, such as supercapacitors, fuel cells and lithium ion batteries.展开更多
基金financial support from the NSFC(Nos.51361005,U1501242,51371060 and 51671062)the Guangxi Natural Science Foundation(Nos.AD17195073,2014GXNSFAA118319 and 2014GXNAFDA118005)+1 种基金the Guangxi Key Laboratory of Information Materials(Nos.161002-Z and 161002-K)the Guangxi Scientific Technology Team(No.2012GXNSFGA06002)
文摘Nitrogen-doped porous carbon materials（NPCs） have been successfully fabricated by a simple one-step pyrolysis of diethylenetriaminepentaacetic acid（DTPA） in the presence of KOH. The as-synthesized NPCs displayed a high specific surface area(3214 m;g;) and a well-defined porous structure when the annealing temperature reached 800 ℃, which showed superior electrochemical performance as supercapacitor electrode materials. Electrochemical tests showed that the NPCs achieved an impressive specific capacitance of 323 F g;at a current density of 0.5 A g;in 6 M KOH aqueous solution and an outstanding cycle stability, negligible specific capacitance decay after 5000 cycles at 10 A g;. This strategy offered a new insight into the preparation of novel carbon materials for the advanced energy storage devices, such as supercapacitors, fuel cells and lithium ion batteries.
