Synthesis of multiwall carbon nanotubes via an inert atmosphere absent autogenetic-pressure method for supercapacitor
Xu, Yangtao1; Zhang, Yameng1; Zhang, Deyi1,2; Ma, Jiqiang1; Yi, Wang2; Zhang, Jiwei2; Shi, Hao2
2019-12
发表期刊JOURNAL OF ENERGY STORAGE
ISSN2352-152X
卷号26
摘要Carbon nanotubes has attracted much attentions due to its huge application potential in various high-tech fields. Exploition of the simple and cost-efficient synthesis method for carbon nanotubes is crucial for its practical application. Herein, multi-wall carbon nanotubes (MCNTs) was successfully synthesized by one-step pyrolysis of a mixture of benzene and ferrocene in a sealed autoclave under autogenetic-pressure. A pyrolysis temperature of 800 degrees C, pyrolysis time for 30 min and a ferrocene/benzene molar ratio of 1:2 is found to be the optimal conditions for synthesizing the MCNTs via the mentioned autogenetic-pressure method. The synthesized MCNTs exhibits a "bamboo joint"-like multi-wall structure with about 12 layers of highly graphited tube wall and uniform external diameter of ca 20 nm. The specific capacitance of the synthesized MCNTs reaches 64 F g(-1), which value is about 3.0 times higher than that of the typical commercial MCNTs. The synthesized MCNTs also exhibits very excellent superior rate and cycle performance. More than 95.5% initial specific capacitance is retained even under a large current density of 20 A g(-1), and no apparent specific capacitance decrement is observed after 10,000 times charge-discharge cycles. The energy density of the synthesized MCNTs-based supercapacitor arrives 2.27 Wh kg(-1) at a power density of 157 W kg(-1), and 2.07 Wh kg(-1) of energy density is still retained at a power density of 5.3 kW kg(-1), while an energy density of 0.72 Wh kg(-1) is arrived at a power density of 2.6 kW kg(-1) for the typical commercial MCNTs-based supercapacitor. The superior capacitance performance of the synthesized MCNTs than that of the typical commercial MCNTs is ascribed to the higher conductivity induced by the higher graphitization degree than that of the typical commercial MCNTs, good surface wettability due to the high content of oxygen-contained functional groups on surface, and the supplementary contribution of pseudo-capacitance.
关键词Multi-wall carbon nanotubes Autogenetic-pressure method Supercapacitor
DOI10.1016/j.est.2019.100995
收录类别SCI ; SCIE
语种英语
资助项目National Natural Science Foundation of China[51462020][21867015]
WOS研究方向Energy & Fuels
WOS类目Energy & Fuels
WOS记录号WOS:000501787200093
出版者ELSEVIER
EI入藏号20194507647631
EI主题词Multiwalled carbon nanotubes (MWCN)
EI分类号701.1 Electricity: Basic Concepts and Phenomena - 761 Nanotechnology - 802.2 Chemical Reactions - 804.1 Organic Compounds
引用统计
被引频次:18[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符https://ir.lut.edu.cn/handle/2XXMBERH/64236
专题石油化工学院
省部共建有色金属先进加工与再利用国家重点实验室
通讯作者Zhang, Deyi
作者单位1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China;
2.Lanzhou Univ Technol, Coll Petrochem Technol, Lanzhou 730050, Gansu, Peoples R China
第一作者单位省部共建有色金属先进加工与再利用国家重点实验室
通讯作者单位省部共建有色金属先进加工与再利用国家重点实验室;  石油化工学院
第一作者的第一单位省部共建有色金属先进加工与再利用国家重点实验室
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GB/T 7714
Xu, Yangtao,Zhang, Yameng,Zhang, Deyi,et al. Synthesis of multiwall carbon nanotubes via an inert atmosphere absent autogenetic-pressure method for supercapacitor[J]. JOURNAL OF ENERGY STORAGE,2019,26.
APA Xu, Yangtao.,Zhang, Yameng.,Zhang, Deyi.,Ma, Jiqiang.,Yi, Wang.,...&Shi, Hao.(2019).Synthesis of multiwall carbon nanotubes via an inert atmosphere absent autogenetic-pressure method for supercapacitor.JOURNAL OF ENERGY STORAGE,26.
MLA Xu, Yangtao,et al."Synthesis of multiwall carbon nanotubes via an inert atmosphere absent autogenetic-pressure method for supercapacitor".JOURNAL OF ENERGY STORAGE 26(2019).
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