Preparation of activated carbon nanofibers using degradative solvent extraction products obtained from low-rank coal and their utilization in supercapacitors
作者： Weixiang Qian , Xian Li , Xianqing Zhu , Zhenzhong Hu , Xu Zhang
DOI: 10.1039/C9RA09966B
关键词: Supercapacitor 、 Materials science 、 Chemical engineering 、 Carbon nanofiber 、 Specific surface area 、 Polyacrylonitrile 、 Nanofiber 、 Electrospinning 、 Solubility 、 Activated carbon
摘要: In this study, low-rank coal was separated into three solid fractions by a degradative solvent extraction method. The high-molecular-weight extract (termed Deposit) had some outstanding properties such as high carbon content, almost no ash, aromaticity, good thermoplasticity and solubility in DMF. Therefore, Deposit with proportion of polyacrylonitrile (PAN) used to prepare activated nanofibers electrospinning CO2 activation. Moreover, the utilization these supercapacitor electrode preliminarily investigated. results showed that specific surface area Deposit-based (1005 m2 g−1) significantly higher than obtained from pure PAN (688 g−1). TGA simulations caused different thermal decomposition behaviors during stabilization activation processes. addition, better capacitance (192.6 F g−1 at 1 A cycling performance (retention rate 89.8% after 1000 cycles 5 6 M KOH electrolyte. factors, enhanced pore volume decreased average fiber diameter, affected electrochemical nanofibers. Thus, it has been proven is promising precursor for preparation unique properties.
rsc.org
sci-hub.se 参考文章(41)
Mingxi Guo, Jixi Guo, Dianzeng Jia, Hongyang Zhao, Zhipeng Sun, Xianli Song, Yinhua Li, Coal derived porous carbon fibers with tunable internal channels for flexible electrodes and organic matter absorption Journal of Materials Chemistry. ,vol. 3, pp. 21178- 21184 ,(2015) , 10.1039/C5TA05743D
John Chmiola, G Yushin, Yury Gogotsi, Christele Portet, Patrice Simon, Pierre-Louis Taberna, Anomalous Increase in Carbon Capacitance at Pore Sizes Less Than 1 Nanometer Science. ,vol. 313, pp. 1760- 1763 ,(2006) , 10.1126/SCIENCE.1132195
Ryuichi Ashida, Masato Morimoto, Yoshihiro Makino, Satoshi Umemoto, Hiroyuki Nakagawa, Kouichi Miura, Koji Saito, Kenji Kato, Fractionation of brown coal by sequential high temperature solvent extraction Fuel. ,vol. 88, pp. 1485- 1490 ,(2009) , 10.1016/J.FUEL.2008.12.003
M.S.A. Rahaman, A.F. Ismail, A. Mustafa, A review of heat treatment on polyacrylonitrile fiber Polymer Degradation and Stability. ,vol. 92, pp. 1421- 1432 ,(2007) , 10.1016/J.POLYMDEGRADSTAB.2007.03.023
Volker Presser, Lifeng Zhang, Jun Jie Niu, John McDonough, Carlos Perez, Hao Fong, Yury Gogotsi, STORAGE MATERIALS: Flexible Nano‐felts of Carbide‐Derived Carbon with Ultra‐high Power Handling Capability (Adv. Energy Mater. 3/2011) Advanced Energy Materials. ,vol. 1, pp. 422- 422 ,(2011) , 10.1002/AENM.201190015
Gang Wang, Chao Pan, Liuping Wang, Qiang Dong, Chang Yu, Zongbin Zhao, Jieshan Qiu, Activated carbon nanofiber webs made by electrospinning for capacitive deionization Electrochimica Acta. ,vol. 69, pp. 65- 70 ,(2012) , 10.1016/J.ELECTACTA.2012.02.066
Sang Hee Park, Chan Kim, Young Ok Choi, Kap Seung Yang, Preparations of pitch-based CF/ACF webs by electrospinning Carbon. ,vol. 41, pp. 2655- 2657 ,(2003) , 10.1016/S0008-6223(03)00272-0
Roya M. Nezarati, Michelle B. Eifert, Elizabeth Cosgriff-Hernandez, Effects of humidity and solution viscosity on electrospun fiber morphology. Tissue Engineering Part C-methods. ,vol. 19, pp. 810- 819 ,(2013) , 10.1089/TEN.TEC.2012.0671
Chan Kim, Sang-Hee Park, Wan-Jin Lee, Kap-Seung Yang, Characteristics of supercapaitor electrodes of PBI-based carbon nanofiber web prepared by electrospinning Electrochimica Acta. ,vol. 50, pp. 877- 881 ,(2004) , 10.1016/J.ELECTACTA.2004.02.071
F Derbyshire, R Andrews, D Jacques, M Jagtoyen, G Kimber, T Rantell, Synthesis of isotropic carbon fibers and activated carbon fibers from pitch precursors Fuel. ,vol. 80, pp. 345- 356 ,(2001) , 10.1016/S0016-2361(00)00099-5