Carbon Nanotubes for Energy Applications

Antiohos, Dennis; Romano, Mark S.; Razal, Joselito M.

doi:10.5772/51784

Cited by 15 publications

(9 citation statements)

References 146 publications

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“…Due to their unique structures and outstanding electrical, thermal, optical, and mechanical properties, carbon nanotubes (CNTs), including single-walled carbon nanotubes (SWNTs) and multi-walled carbon nanotubes (MWNTs), have attracted extensive interest and demonstrated great promise in numerous application areas, such as energy storage, device modeling, sporting goods, water filters, thin-film electronics, coatings, actuators, and electromagnetic shields [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 ]. CNT-related industrial products are growing rapidly each year, and total worldwide production of CNTs is expected to approach 4000 tons by 2023 [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

Removal of Carbon Nanotubes from Aqueous Solutions by Sodium Hypochlorite: Effects of Treatment Conditions

Yang

Okazaki

Zhang

2021

Toxics

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The treatment of carbon nanotubes (CNTs) containing wastewater has become an important issue with increasing industrial application due to the risk CNTs may pose to the environment and human health. However, an effective method for treating wastewater containing CNTs has not been established. Recently, we proposed a method to remove CNTs from aqueous dispersions using sodium hypochlorite (NaClO). To explore the practical applications of this method, we herein investigate the influence of different conditions, such as NaClO concentration, reaction temperature, pH value, and CNT concentration, on the CNT degradation rate. The results showed that the degradation of CNTs depends strongly on temperature and NaClO concentration: the higher the temperature and NaClO concentration, the faster the degradation rate. The optimal temperature and NaClO concentration are 50–70 °C and 2–3 wt%, respectively. Lower pH accelerated the degradation rate but induced the decomposition of NaClO. Furthermore, dispersants and other substances in the solution may also consume NaClO, thus affecting the degradation of CNTs. These findings are of significance for establishing a standard technique for CNT-containing industrial wastewater treatment, and for advancing the environmental sustainability of the CNT industry.

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Section: Introductionmentioning

confidence: 99%

Removal of Carbon Nanotubes from Aqueous Solutions by Sodium Hypochlorite: Effects of Treatment Conditions

Yang

Okazaki

Zhang

2021

Toxics

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“…However cobalt oxyhdroxide practical capacitance is less than 200 Fg -1 due to its low conductivity [17]. To improve the ionic transportation and electrical conductivity, various metal nanostructures and composites combined with carbon materials such as activated carbon, conducting polymers and graphene, with high surface area and high conductivity have been studied [18][19][20][21][22]. Among these materials, a porous and light-weight, graphene foam material (i.e.…”

Section: Introductionmentioning

confidence: 99%

High electrochemical performance of hybrid cobalt oxyhydroxide/nickel foam graphene

Masikhwa

Momodu

Bello

et al. 2016

Journal of Colloid and Interface Science

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In this study, we report the in-situ hydrothermal synthesis of mesoporous nanosheets of cobalt oxyhydroxide (CoOOH) on nickel foam graphene (Ni-FG) substrate, obtained via atmospheric pressure chemical vapour deposition (AP-CVD). The produced composite were closely interlinked with Ni-FG, which enhances the synergistic effect between graphene and the metal hydroxide, CoOOH. It is motivating that the synthesized CoOOH on the Ni-FG substrate showed a homogenous coating of well-ordered intersected nanosheets with porous structure. The electrochemical properties of the material as electrode showed a maximum specific capacity of 199mAhg with a capacity retention of 98% after 1000 cycling in a three electrode measurements.

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“…CNTs have high thermal stability (up to 2800 °C in vacuum and about 750 °C in air), high surface area (200-900 m 2 g −1 ), low density (1-2 g cm −3 ), and high Young's modulus (1-1.8 TPa) [3,5,6]. These properties make CNTs useful for sensors [8,9], high strength materials [10], nanoelectronics [11,12], fuel storage [13], energy storage [14], and biomedicine [15][16][17][18]. Commercially available CNTs are typically produced by chemical vapor deposition [19][20][21], and are entangled and randomly oriented due to short-range van der Waals forces between adjacent CNTs.…”

Section: Carbon Nanotubesmentioning

confidence: 99%