Synthesis of multiwall carbon nanotubes via an inert atmosphere absent autogenetic-pressure method for supercapacitor

doi:10.1016/j.est.2019.100995

IR > 石油化工学院

	Synthesis of multiwall carbon nanotubes via an inert atmosphere absent autogenetic-pressure method for supercapacitor
	Xu, Yangtao1 ; Zhang, Yameng 1; Zhang, Deyi1,2 ; Ma, Jiqiang1 ; Yi, Wang 2; Zhang, Jiwei 2; Shi, Hao 2
	2019-12
发表期刊	JOURNAL OF ENERGY STORAGE
ISSN	2352-152X
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
DOI	10.1016/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
推荐引用方式 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).