Nitrogen-Doped Porous Carbons As Electrode Materials for High-Performance Supercapacitor and Dye-Sensitized Solar Cell

ACS Applied Materials & Interfaces
Lan WangKai Jiang

Abstract

Activated N-doped porous carbons (a-NCs) were synthesized by pyrolysis and alkali activation of graphene incorporated melamine formaldehyde resin (MF). The moderate N doping levels, mesopores rich porous texture, and incorporation of graphene enable the applications of a-NCs in surface and conductivity dependent electrode materials for supercapacitor and dye-sensitized solar cell (DSSC). Under optimal activation temperature of 700 °C, the afforded sample, labeled as a-NC700, possesses a specific surface area of 1302 m2 g(-1), a N fraction of 4.5%, and a modest graphitization. When used as a supercapacitor electrode, a-NC700 offers a high specific capacitance of 296 F g(-1) at a current density of 1 A g(-1), an acceptable rate capability, and a high cycling stability in 1 M H2SO4 electrolyte. As a result, a-NC700 supercapacitor delivers energy densities of 5.0-3.5 Wh kg(-1) under power densities of 83-1609 W kg(-1). Moreover, a-NC700 also demonstrates high electrocatalytic activity for I3- reduction. When employed as a counter electrode (CE) of DSSC, a power conversion efficiency (PCE) of 6.9% is achieved, which is comparable to that of the Pt CE based counterpart (7.1%). The excellent capacitive and photovoltaic performances hi...Continue Reading

References

Apr 7, 2007·Physical Chemistry Chemical Physics : PCCP·Elzbieta Frackowiak
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Citations

Dec 16, 2016·ACS Applied Materials & Interfaces·Tiago C MendesDouglas R MacFarlane
Sep 19, 2017·ACS Applied Materials & Interfaces·Yamin YaoXuan Liu
Mar 19, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Monika ChaudharyParitosh Mohanty
Dec 24, 2017·Journal of Colloid and Interface Science·Duihai TangZhen Zhao

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