Effect of acidification conditions on the properties of carbon nanotube fibers

Wang, Kun; Li, Min; Liu, Yanan; Gu, Yi; Li, Qingwen; Zhang, Zuoguang

doi:10.1016/j.apsusc.2013.11.162

Cited by 50 publications

(25 citation statements)

References 30 publications

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“…The conductivity of the CuS/PET fiber was measured using a digital multimeter (VC890C+, Victor, China). The electrical conductivity can be calculated according to the equation:

normalσ = \frac{l}{RS}

where σ is the electrical conductivity (S cm −1 ), R is the electrical resistance (Ω), S is the cross‐sectional area of the fiber (cm 2 ), and l is the length of the test fiber (cm).…”

Section: Methodsmentioning

confidence: 99%

Fabrication of polyaniline/copper sulfide/poly(ethylene terephthalate) thread electrode for flexible fiber‐shaped supercapacitors

Zhou

Jiao

et al. 2018

J of Applied Polymer Sci

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Fiber-shaped supercapacitors have drawn much attention for their great potential application in future portable and wearable electronics because of their outstanding flexibility, tiny volume, and good deformability. In this work, commercial poly(ethylene terephthalate) (PET) thread was successfully converted into an electrically conductive and electrochemically active thread by introducing copper sulfide (CuS) and polyaniline (PANI) via simple chemical bath deposition and electrochemical deposition. The obtained PANI/CuS/PET electrode combined all the advantages of PET, CuS, and PANI, showing an excellent physical and electrochemical performance. The fiber-shaped supercapacitor exhibits a high specific capacitance of 29 mF cm −2 (116 mF cm −2 for a single electrode) and good cycling stability with 93.1% retention after 1000 cycles. With the simple preparation method and low-cost raw materials, this strategy provides a reference for the fabrication of portable/wearable energy storage devices.

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“…The conductivity of the CuS/PET fiber was measured using a digital multimeter (VC890C+, Victor, China). The electrical conductivity can be calculated according to the equation:

normalσ = \frac{l}{RS}

where σ is the electrical conductivity (S cm −1 ), R is the electrical resistance (Ω), S is the cross‐sectional area of the fiber (cm 2 ), and l is the length of the test fiber (cm).…”

Section: Methodsmentioning

confidence: 99%

Fabrication of polyaniline/copper sulfide/poly(ethylene terephthalate) thread electrode for flexible fiber‐shaped supercapacitors

Zhou

Jiao

et al. 2018

J of Applied Polymer Sci

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“…Langston et al [15] stated that the best functionalization efficiency and highest oxygen concentration was obtained with the surface treatment of 80 min. Wang et al [16] found that 15 min was preferred to pursue best electrical conductivity of CFs. In this study, carbon fibres were treated by mixed acids, and the surface treatment time was optimized by balancing the levels of tensile strength of fibre, adhesive strength and fracture toughness of CF/epoxy interface.…”

Section: Introductionmentioning

confidence: 99%

Shear strength and fracture toughness of carbon fibre/epoxy interface: effect of surface treatment

Wang

Ji²,

Roy

et al. 2015

Materials & Design

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Abstract:Braided textile-reinforced composites have become increasingly attractive as protection materials for various applications, including sports.,In such applications it is crucial to maintain both strong adhesion at fibre-matrix interface and high interfacial fracture toughness, which influence mechanical performance of composites as well as their energy-absorption capacity. Surface treatment of reinforcing fibres has been widely used to achieve satisfactory fibre-matrix adhesion. However, most studies till date focused on the overall composite performance rather than on the interface properties of a single fibre/epoxy system. In this study, carbon fibres were treated by mixed acids for different durations, and resulting adhesion strength at the interface between them and epoxy resin as well as their tensile strength were measured in a microbond and microtensile tests, respectively. The interfacial fracture toughness was also analysed. The results show that after an optimum 15-30 min surface treatment, both interfacial shear strength and fracture toughness of the interface were improved alongside with an increased tensile strength of single fibre. However, a prolonged surface treatment resulted in a reduction of both fibre tensile strength and fracture toughness of the interface due to induced surface damage.

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“…The decrease of I G /I D ratio indicates that the acid treatment may have destroyed the π-π conjugation structure in CNTs, leading to a decrease of σ. 43,54 Our group 44 studied the effect of chemical doping of SWCNTs by the mixed acids of HNO 3 and H 2 SO 4 on TE performance of SWCNT film (Figure 3C-E). The aciddoped SWCNTs with the flat and smooth morphology (Figure 3D) favored the charge transfer among adjacent SWCNTs relative to pristine SWCNTs with the wrinkled aggregation (Figure 3C), leading to a much higher σ of acid-doped SWCNTs than that of pristine SWCNTs (Figure 3E).…”

Section: Effect Of Cnt Functionalizationmentioning

confidence: 99%

Carbon and carbon composites for thermoelectric applications

2020

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The urgent need for consistent, reliable, ecofriendly, and stable power sources drives the development of new green energy materials. Thermoelectric (TE) materials receive increasing attention due to their unique capability of realizing the direct energy conversion between heat and electricity, showing diverse applications in harvesting waste heat and low‐grade heat. Carbon materials such as carbon nanotubes (CNTs) and graphene have experienced a rapid development as TE materials because of their intrinsic ultrahigh electrical conductivity and light weight. Besides, polymer‐based carbon composites are particularly fascinating as the combination of the merits of polymers and filler materials leads to high TE performance and superior flexibility. Herein, the recent TE advances are systematically summarized in the studied popularity of carbon materials (ie, CNTs and graphene) and the category of polymers. The conducting polymer‐based carbon materials are particularly highlighted. Finally, the remaining challenges and some tentative suggestions possibly guiding future developments are proposed, which may pave a way for a bright future of carbon and carbon composites in the energy market.

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Effect of acidification conditions on the properties of carbon nanotube fibers

Cited by 50 publications

References 30 publications

Fabrication of polyaniline/copper sulfide/poly(ethylene terephthalate) thread electrode for flexible fiber‐shaped supercapacitors

Fabrication of polyaniline/copper sulfide/poly(ethylene terephthalate) thread electrode for flexible fiber‐shaped supercapacitors

Shear strength and fracture toughness of carbon fibre/epoxy interface: effect of surface treatment

Carbon and carbon composites for thermoelectric applications

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