Effect of MWCNT Bundle Structure on Electric Double-Layer Capacitor Performance

Honda, Yuichi; Ono, Takeshi; Takeshige, Masayuki; Morihara, Norifumi; Shiozaki, Hideki; Kitamura, Takaharu; Yoshikawa, Kenji; Morita, Masayuki; Yamagata, Masaki; Ishikawa, Masashi

doi:10.1149/1.3049907

Cited by 22 publications

(26 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As the super‐high purity SWCNT was used, excellent retention of the capacitance within 2000 cycles can be achieved 158. Similarly, the capacitance as operated at 2.5 V is 83, 60 and 35 F g −1 for aligned DWCNT, TWCNTs and tube with 4‐walled CNTs, respectively 155. Recently, Dai et al reported that MWCNT array exhibited an energy density up to 120 Wh kg −1 in electrolyte of ILs operated at 4V 156.…”

Section: Cnt Bulk Applicationsmentioning

confidence: 98%

“…Electrolytes included the organic electrolytes152, 153 and pure ionic liquids (ILs)154–157 are able to be operated at high voltage. The ILs stable under high voltage window are commonly composed of large size molecules.…”

Section: Cnt Bulk Applicationsmentioning

confidence: 99%

“…Since most micropores of activated carbon electrode are not accessible for the ions of organic electrolyte and ILs, it is estimated that the real ion‐accessible surface area of activated carbon decreased from the original value of 1000–2000 m 2 g −1 to around 200–300 m 2 g −1 158. In contrast, aligned CNTs are with fixed channel size allowing the simultaneously adsorption of ions and rapid transport of electron along its c‐axis ( Figure a,b) 153, 155, 156, 159. Hata et al evidenced that the diffusion rate of ions inside aligned CNTs were much quicker than that inside the entangled CNT networks 160.…”

Section: Cnt Bulk Applicationsmentioning

confidence: 99%

See 2 more Smart Citations

The Road for Nanomaterials Industry: A Review of Carbon Nanotube Production, Post‐Treatment, and Bulk Applications for Composites and Energy Storage

Zhang

Huang

Qian

et al. 2013

Small

672

381

View full text Add to dashboard Cite

The innovation on the low dimensional nanomaterials brings the rapid growth of nano community. Developing the controllable production and commercial applications of nanomaterials for sustainable society is highly concerned. Herein, carbon nanotubes (CNTs) with sp(2) carbon bonding, excellent mechanical, electrical, thermal, as well as transport properties are selected as model nanomaterials to demonstrate the road of nanomaterials towards industry. The engineering principles of the mass production and recent progress in the area of CNT purification and dispersion are described, as well as its bulk application for nanocomposites and energy storage. The environmental, health, and safety considerations of CNTs, and recent progress in CNT commercialization are also included. With the effort from the CNT industry during the past 10 years, the price of multi-walled CNTs have decreased from 45 000 to 100 $ kg(-1) and the productivity increased to several hundred tons per year for commercial applications in Li ion battery and nanocomposites. When the prices of CNTs decrease to 10 $ kg(-1) , their applications as composites and conductive fillers at a million ton scale can be anticipated, replacing conventional carbon black fillers. Compared with traditional bulk chemicals, the controllable synthesis and applications of CNTs on a million ton scale are still far from being achieved due to the challenges in production, purification, dispersion, and commercial application. The basic knowledge of growth mechanisms, efficient and controllable routes for CNT production, the environmental and safety issues, and the commercialization models are still inadequate. The gap between the basic scientific research and industrial development should be bridged by multidisciplinary research for the rapid growth of CNT nano-industry.

show abstract

Section: Cnt Bulk Applicationsmentioning

confidence: 98%

Section: Cnt Bulk Applicationsmentioning

confidence: 99%

Section: Cnt Bulk Applicationsmentioning

confidence: 99%

See 1 more Smart Citation

The Road for Nanomaterials Industry: A Review of Carbon Nanotube Production, Post‐Treatment, and Bulk Applications for Composites and Energy Storage

Zhang

Huang

Qian

et al. 2013

Small

672

381

View full text Add to dashboard Cite

show abstract

“…Similar to the trends in aqueous electrolyte, the capacitance of CNTs also decreased with the increase of its wall number, because inner wall of tubes contributed little, even zero, to capacitance. Quantitatively, the capacitance as operated at 2.5 V is 83, 60 and 35 F/g for aligned DWCNT, triple walled CNTs and tube with four walls, respectively . In comparison, SWCNT exhibited a far higher capacitance than DWCNTs or other MWCNTs .…”

Section: Application Of Cnts In Supercapacitormentioning

confidence: 95%

Carbon nanotube production and application in energy storage

Cui

Qian

et al. 2012

Asia-Pacific J Chem Eng

View full text Add to dashboard Cite

In order to enhance the application of carbon nanotubes (CNTs) in electrochemical energy storage, we reviewed the production and purification technology of CNTs, as well as the application in Li‐ion battery, supercapacitors (SC), and asymmetric SC. In detail, the formation mechanism, the effects influencing the diameter, diameter distribution, yield and growth rate of CNTs, and the reactor technology for scale up were thoroughly discussed. And the purity, the type of impurities and factors influencing the formation of impurities, and the purification method of CNTs were summarized on the basis of the requirements in the electrochemical use. Finally, the performance of CNTs used in energy storage systems and the challenge for the commercialization were analyzed. The review provides abundant information for better understanding of the relationship between the structure, property of CNTs and its performance. © 2012 Curtin University of Technology and John Wiley & Sons, Ltd.

show abstract

“…Furthermore, aggregates of AC particles have relatively poor electrical conductivity due to poor contact between the AC particles. Additionally, AC particles have relatively low intrinsic conductivity [10]. Carbon nanotube (CNT) materials have been developed for use as electrode materials for EDLCs because they have such desirable characteristics as high electrical conductivity, sufficient mechanical strength, and a reasonable specific surface area [11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%