Manufacturing of Electric Double-layer Capacitors using Carbon Nanocoils and Evaluation of their Specific Capacitance at a High Scan Rate

Izumi, Harutaka; Okabe, Yuta; Suda, Yoshiyuki; Takikawa, Hirofumi; Tanoue, Hideto; Ue, Hitoshi; Shimizu, Kazuki

doi:10.1541/ieejfms.133.660

Cited by 3 publications

(3 citation statements)

References 19 publications

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“…I am currently paying attention to the application of CNC to energy devices such as fuel cells [26][27][28][29][30][31][32] and electric double layer capacitors [33][34][35][36][37]. In this field, although carbon black and activated carbon, whose mass-production processes have been established, are used as a major carbon material, the applications of carbon nanomaterials including CNCs are progressing little by little.…”

Section: Expected Applicationsmentioning

confidence: 99%

Chemical Vapor Deposition of Helical Carbon Nanofibers

Suda¹

2019

Chemical Vapor Deposition for Nanotechnology

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Helical carbon nanofibers (HCNFs), including carbon nanocoils (CNCs), carbon nanotwists, and multi-walled CNCs, can be synthesized by chemical vapor deposition (CVD). HCNFs are predicted to have a high mechanical strength and hence are expected to have a use in nanodevices such as electromagnetic wave absorbers and sensors. For nanodevice applications, it is necessary to synthesize HCNFs in high yield and purity. In this chapter, I focus on CNCs and describe its history, expected application, and synthesis method. Finally, I introduce the author's recent studies on the improvement of the purity of CNCs by improving CVD conditions. A CNC layer with a thickness of larger than 40 μm was grown from a triple layer of SnO 2 /Fe 2 O 3 /SnO 2 catalyst on a substrate, and the CNC purity increased to 81 ± 2%.

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Section: Expected Applicationsmentioning

confidence: 99%

Chemical Vapor Deposition of Helical Carbon Nanofibers

Suda¹

2019

Chemical Vapor Deposition for Nanotechnology

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“…Recently, Izumi et al [20] manufactured EDLC using carbon nanocoils and evaluated it at a high scan rate shown in Fig. 3.…”

Section: Carbon-based Electrodes For Edlcmentioning

confidence: 99%

Carbon-Based Electrode Materials for Supercapacitor: Progress, Challenges and Prospective Solutions

Jian¹,

Liu²,

Gao³

et al. 2016

JEE

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Carbon-based materials are typical and commercially active electrode for supercapacitors due to their advantages such as low cost, good stability and easy availability. In the light of energy storage, supercapacitors mechanism is classified into EDLCs (electrochemical double layer capacitors) and pseudocapacitors. Multidimensional carbon nanomaterials (active carbon, carbon nanotube, graphene, etc.), carbon-based composite and corresponding electrolyte are the critical and important factor in the eyes of researcher. In this minireview, we will discuss the storage mechanism and summarize recent developed novel carbon and carbon-based materials in supercapacitors. The techniques to design the novel nanostructure and high performance electrodematerials that facilitate charge transfer to achieve high energy and power densities will also be discussed.

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“…Izumi studied the carbon black material in arc black manufactured by chemical vapor deposition (ACB) and carbon nanocoil (CNC) through arc discharge and compared activated carbon (AC) with carbon nanomaterials of various specific capacitances. e reason for using carbon nanomaterials to maintain specific capacitance even at high scan rates is almost the same [4]. Zhang pointed out in his research that carbon nanomaterials have made great progress.…”

Section: Introductionmentioning

confidence: 99%

Carbon Nanomaterial Manufacturing System and Automatic Synthesis Equipment and Its Control Device and Control Methods

Lou

Cai

2020

Journal of Chemistry

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In recent years, people are committed to developing new technologies and technologies for energy storage and conversion, environmental detection, high-performance sensors and energy security, and other aspects of the increasingly prominent problems in the field of environmental and biosafety. The purpose of this paper is to explore the manufacturing system and automatic synthesis equipment of carbon nanomaterials, understand the control device and control method, and analyze the structure and morphology characteristics of three kinds of carbon nanomaterials produced by carbon nanomaterial manufacturing system by X-ray diffraction and infrared spectroscopy. The results show that the carbon nanomaterial manufacturing system and automatic synthesis system in this paper solve the problems of high cost, low efficiency, and small scale of the existing carbon nanomaterials manufacturing and achieve the precision control of automatic production, so that the productivity is increased by 20%–35%, and the cost is reduced by 15%–30%. Therefore, they are widely used in the fields of science and technology, environmental protection, and intelligent manufacturing broad prospects. Carbon nanotube manufacturing equipment and automatic synthesis equipment have great production advantages, which can greatly improve the quality and efficiency of carbon nanomaterials. UPY, GO, and UGO carbon nanomaterials produced by carbon nanotube manufacturing equipment are not easy to fall off from the materials. When the wavelength is 500 nm, the absorption frequency of the three materials is the largest. With the extension of the spectral wavelength, the absorption frequency of the three materials is reduced by 52%, 33%, and 34.7%, respectively.

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Manufacturing of Electric Double-layer Capacitors using Carbon Nanocoils and Evaluation of their Specific Capacitance at a High Scan Rate

Cited by 3 publications

References 19 publications

Chemical Vapor Deposition of Helical Carbon Nanofibers

Chemical Vapor Deposition of Helical Carbon Nanofibers

Carbon-Based Electrode Materials for Supercapacitor: Progress, Challenges and Prospective Solutions

Carbon Nanomaterial Manufacturing System and Automatic Synthesis Equipment and Its Control Device and Control Methods

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