Carbon Nanotubes - Redefining the World of Electronics [Working Title]最新文献

Synthesis and Purification of Carbon Nanotubes 碳纳米管的合成与纯化

Carbon Nanotubes - Redefining the World of Electronics [Working Title] Pub Date : 2021-06-07 DOI: 10.5772/INTECHOPEN.98221

S. A. Rouf, Z. Usman, Hafiz Tariq Masood, A. Majeed, M. Sarwar, W. Abbas

{"title":"Synthesis and Purification of Carbon Nanotubes","authors":"S. A. Rouf, Z. Usman, Hafiz Tariq Masood, A. Majeed, M. Sarwar, W. Abbas","doi":"10.5772/INTECHOPEN.98221","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.98221","url":null,"abstract":"In this chapter, we will evaluate the synthesis and purification of carbon nanotubes. Carbon nanotubes are cylindrical molecules that consists of graphene (rolled up of a single-layer carbon atom). A wide variety of synthesis techniques such as arc discharge synthesis, laser ablation of graphite/laser vaporization synthesis method, chemical vapor deposition (CVD), high pressure carbon monoxide synthesis and flame synthesis techniques, have been implemented to grow single and multi-walled carbon nanotubes for technological applications. All of the above methods exploit transition metals, like iron, cobalt, and nickel, as a catalyst. There are number of methods (filtering, chromatography and centrifugation) used to purify the carbon nanotubes, but the degree of purity remained questionable in these methods. In order to enhance the purification extent, alternate techniques such as Gas phase purification, Liquid phase purification and Purification by Intercalation are introduced. Here we will discuss the advantages and disadvantages of these purification routes. It will help researchers in selecting appropriate and effective method for synthesis and purification of carbon nanotubes.","PeriodicalId":373458,"journal":{"name":"Carbon Nanotubes - Redefining the World of Electronics [Working Title]","volume":"77 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123566751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Carbon Nanotubes Reinforced Natural Rubber Composites 碳纳米管增强天然橡胶复合材料

Carbon Nanotubes - Redefining the World of Electronics [Working Title] Pub Date : 2021-02-24 DOI: 10.5772/INTECHOPEN.95913

A. Krainoi, J. Johns, E. Kalkornsurapranee, Y. Nakaramontri

{"title":"Carbon Nanotubes Reinforced Natural Rubber Composites","authors":"A. Krainoi, J. Johns, E. Kalkornsurapranee, Y. Nakaramontri","doi":"10.5772/INTECHOPEN.95913","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.95913","url":null,"abstract":"Several advanced methods have been introduced to disperse CNTs in the NR matrix. Various aspects highlighted in this chapter include the mixing processes such as melt mixing and latex mixing methods. As well as, formations of functional groups on the surfaces of CNT using silane coupling agents (i.e., ex-situ and in-situ functionalization). Moreover, hybrid CNT are beneficial to achieve better electrical conductivity of NR/CNT composites. These efforts are aimed to reduce the percolation threshold concentration in the NR composites for application as conducting composites based on electrically insulating rubber matrix. Sensor application is developed based on conducting NR composites. NR composites showed changing of resistivity during elongation termed as piezoresistivity. The most commonly used rubber matrices such as NR, ENR and IR are mixed with a combination of CNT and CB fillers as hybrid filler. The presence of linkages in the ENR composites results in the least loss of conductivity during external strain. It is found that the conductivity becomes stable after 3000 cycles. This is found to be similar to the NR-CNT/CB composite, while a few cycles are needed for IR-CNT/CB owing to the higher filler agglomeration and poor filler-rubber interactions. This is attributed to the polar chemical interactions between ENR and the functional groups on the surfaces of CNT/CB.","PeriodicalId":373458,"journal":{"name":"Carbon Nanotubes - Redefining the World of Electronics [Working Title]","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120938918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Preparation and Characterization of Electrically Conductive Polymer Nanocomposites with Different Carbon Nanoparticles 不同碳纳米颗粒导电聚合物纳米复合材料的制备与表征

Carbon Nanotubes - Redefining the World of Electronics [Working Title] Pub Date : 2021-02-01 DOI: 10.5772/INTECHOPEN.95912

V. J. Cruz‐Delgado, J. Valdez-Garza, J. M. Mata-Padilla, J. G. Martínez‐Colunga, C. Ávila‐Orta

引用次数: 1

Carbon Nanotubes: Applications to Energy Storage Devices 碳纳米管:在储能设备中的应用

Carbon Nanotubes - Redefining the World of Electronics [Working Title] Pub Date : 2020-12-04 DOI: 10.5772/intechopen.94155

R. Amin, Petla Ramesh Kumar, I. Belharouak

{"title":"Carbon Nanotubes: Applications to Energy Storage Devices","authors":"R. Amin, Petla Ramesh Kumar, I. Belharouak","doi":"10.5772/intechopen.94155","DOIUrl":"https://doi.org/10.5772/intechopen.94155","url":null,"abstract":"Carbon nanotubes (CNTs) are an extraordinary discovery in the area of science and technology. Engineering them properly holds the promise of opening new avenues for future development of many other materials for diverse applications. Carbon nanotubes have open structure and enriched chirality, which enable improvements the properties and performances of other materials when CNTs are incorporated in them. Energy storage systems have been using carbon nanotubes either as an additive to improve electronic conductivity of cathode materials or as an active anode component depending upon structural and morphological specifications. Furthermore, they have also been used directly as the electrode material in supercapacitors and fuel cells. Therefore, CNTs demand a huge importance due to their underlying properties and prospective applications in the energy storage research fields. There are different kinds of carbon nanotubes which have been successfully used in batteries, supercapacitors, fuel cells and other energy storage systems. This chapter focuses on the role of CNTs in the different energy storage and conversion systems and impact of their structure and morphology on the electrochemical performances and storage mechanisms.","PeriodicalId":373458,"journal":{"name":"Carbon Nanotubes - Redefining the World of Electronics [Working Title]","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122965245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Carbon Nanotubes as Reinforcing Nanomaterials for Rubbers Used in Electronics 碳纳米管作为电子橡胶增强材料的研究

Carbon Nanotubes - Redefining the World of Electronics [Working Title] Pub Date : 2020-11-03 DOI: 10.5772/intechopen.94061

Jabulani I. Gumede, James Carson, S. Hlangothi

{"title":"Carbon Nanotubes as Reinforcing Nanomaterials for Rubbers Used in Electronics","authors":"Jabulani I. Gumede, James Carson, S. Hlangothi","doi":"10.5772/intechopen.94061","DOIUrl":"https://doi.org/10.5772/intechopen.94061","url":null,"abstract":"The field of electronics involves complex systems where the active and passive electronic devices are integrated on the rubber substrate, e.g., silicone (Q), which provides, through potting, a strong assembly of these devices on the circuit board. Several other rubbers are employed in the field to strengthen, insulate and seal the components of the electronic machines and instruments, and therefore protect them against damage. These rubbers are typically strengthened and toughened using carbon black (CB). However, due to its noticeable drawbacks, recent research in the field of rubber and electronics has suggested the use of carbon nanotubes (CNTs) as alternative reinforcing fillers to produce electronics rubber composites that do not only have enhanced electrical conductiv¬ity, thermal stability, electromagnetic interference (EMI) shielding, weatherability and insulation properties, but also offer outstanding stretchability, bendability and tear strength under frequent elastic deformation. These performances are similar for both single-walled carbon nanotubes (SWCNTs) and multi-walled carbon nanotubes (MWCNTs) in both the functional and structural composites. Although SWCNTs can result in relatively better homogeneity than MWCNTs, most rubbers often constitute MWCNTs because they are relatively cheaper. The great potential of rubber-CNTs composites being extensively used in the field of electronics is explored in this chapter.","PeriodicalId":373458,"journal":{"name":"Carbon Nanotubes - Redefining the World of Electronics [Working Title]","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126518257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1