Preparation and Electrochemical Performance of Functionalized Porous Carbon Nanospheres
Abstract
In this paper, porous carbon nanospheres (PCS) were prepared by carbonization at 1000 ℃ and KOH activation at 750 ℃ of polypyrrole (PPy) nanospheres. Then the post treatment of PCS was carried out by solvothermal reaction with p-Aminothiophenol (PATP) to prepare PATP functionalized PCS with high density (PATP-PCS). The results showed that after functionalization with PATP, low-density porous carbon material turned into high-density functionalized carbon material.The volumetric capacitance of PATP-PCS was up to 183.6 F/cm3 at 0.5 A/g; when the current density increased to 20 A/g, the volumetric capacitance is still 123.14 F/cm3, showing excellent rate performance.After 3 000 cycles of charge and discharge at the current density of 10 A/g, the cycle life is up to 94.7%, indicating a prominent cycle stability.
Keywords: functionalized, porous carbon nanospheres, volumetric capacitance, supercapacitors
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GONZALEZ A. GOIKOLEA E. BARRENA J A. et al. Review on supercapacitors: Technologies and materials[j]. Renewable and Sustainable Energy Reviews. 2016. 58: 1189 - 1206.
YU L L. ZHU J J. ZHAOJ T. The present situation and development trend of supercapacilorst [J]. Chinese Journal of Nature. 2015. 37(3): 188-196. (In Chinese)
YANG X Y. CHEN L II. LI Y. et al. Hierarchically porous materials: synthesis strategies and structure design[j]. Chinese Journal of Nature. 2017. 46(2): 481-558.
ZHENG J T. ZHANG Y Z. WANG M Z. The study progress and prospect of porous carbon materials [J]. Progress in Chemstry, 1996, 8(3): 241-250. (In Chinese)
SANCHEZ-SANCHEZ A, FIERRO V, IZQUIERDO M T, el al. Functionalized hierarchical and ordered mesoporous carbons for high-performance supercapacitors [J]. J Mater Chem A, 2016, 4(16); 6140-6148.
SU F B, POH Chee Kok, CHEN J S, et al. Nitrogen-containing microporous carbon nanospheres with improved capacitive properties[J]. Energy Environ Sci, 2011, 4(3): 717- 724.
GOGOTSI Y, SIMON P. True performance metrics in electrochemical energy storage[j]. Science,2011, 334: 917 - 918.
PU J. LI C, TANGL, et al. Impregnation assisted synthesis of 3D nitrogen-doped porous carbon with high capacitance[J]. Carbon, 2015, 94: 650 - 660.
WANG Q. YAN J, FAN Z J. Nitrogen-doped sandwich-like porous carbon nanosheets for high volumetric performance su-percapacitors [j]. Electrochim Acta, 2014, 146: 548 - 555.
N1NG X T, ZHONG W B, LI S C, et al. A novel approach for the synthesis of monodispere polypyrrole nanospheres [J J. Mater Lett, 2014, 117(7): 294-297.
WANG Y L, XUAN H Q, LIN G X. et al. A melamine-assisted chemical blowing synthesis of N-doped acivated carbon sheets for supercapacitor application [ J ]. J Power Sources, 2016, 319: 262-270.
HU Y J, TONG X, ZHUO H, et al. 3D hierarchical porous N-doped carbon aerogel from renewable cellulose: an attractive carbon for high-performance supercapacitor electrodes and C02 adsorption [J]. RSC Adv, 2016, 6( 19): 15788-15795.
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