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
Source PublicationJOURNAL OF ENERGY STORAGE
ISSN2352-152X
Volume26
AbstractCarbon 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.
KeywordMulti-wall carbon nanotubes Autogenetic-pressure method Supercapacitor
DOI10.1016/j.est.2019.100995
Indexed BySCI ; SCIE
Language英语
Funding ProjectNational Natural Science Foundation of China[51462020][21867015]
WOS Research AreaEnergy & Fuels
WOS SubjectEnergy & Fuels
WOS IDWOS:000501787200093
PublisherELSEVIER
EI Accession Number20194507647631
EI KeywordsMultiwalled carbon nanotubes (MWCN)
EI Classification Number701.1 Electricity: Basic Concepts and Phenomena - 761 Nanotechnology - 802.2 Chemical Reactions - 804.1 Organic Compounds
Citation statistics
Cited Times:18[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttps://ir.lut.edu.cn/handle/2XXMBERH/64236
Collection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
Corresponding AuthorZhang, Deyi
Affiliation1.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
First Author AffilicationState Key Laboratory Of Gansu Advanced Non-Ferrous Metal Materials
Corresponding Author AffilicationState Key Laboratory Of Gansu Advanced Non-Ferrous Metal Materials;  Coll Petrochem Engn
First Signature AffilicationState Key Laboratory Of Gansu Advanced Non-Ferrous Metal Materials
Recommended Citation
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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