Thermal management for purification of aligned arrays of single-walled carbon nanotubes based on thermocapillary flow by pulsed heating

Li, Yuhang; Chen, Jin; Xie, Xu; Xing, Yufeng; Song, Jizhou

doi:10.1016/j.ijthermalsci.2019.01.010

Cited by 2 publications

(1 citation statement)

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“…There are aligned carbon nanotubes (ACNTs) and twining carbon nanotubes (TCNTs) distinguished by the order degree of CNTs. ACNTs have the advantage of high order degree , good controllability, and easy manipulation [26], showing excellent electrical and thermal properties [27][28][29][30]. The specific capacity of ACNT arrays was 350 mAh g −1 after 50 cycles in Li-battery, while the battery with the TCNTs achieved 197 mAh g −1 only [30].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of electrical and thermal properties of graphene by aligned carbon nanotubes

Guo

et al. 2020

Mater. Res. Express

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In order to explore the composite effects of graphene (GR) and carbon nanotubes (CNTs), GR/CNTs aerogels and GR/CNTs coatings were fabricated. Aligned carbon nanotubes (ACNTs) and twining carbon nanotubes (TCNTs) were comparatively examined by integrating them with graphene, which has seldom been studied in detail. Freeze drying was novelly adopted to retain the liquid distribution in GR/CNTs mixture. Fourier Transform Infrared Spectroscopy (FTIR) analysis demonstrated that OH group and carboxylic acid groups were effectively induced onto CNTs via chemical modification. Scanning electron microscopy (SEM) showed that ACNTs achieved better dispersion and homogeneity in graphene than TCNTs. GR/CNTs hybrid composite with various loading of ACNTs or TCNTs were examined by electrical/thermal conductivity tests and practically evaluated for thermal management in LEDs. Results revealed that the electrical and thermal properties of graphene can be dramatically enhanced by the proper addition of ACNTs due to the formation of effective conductive bridges. The GR/ACNTs aerogel with 10 wt% ACNTs attained a high electrical conductivity of 2.08×10 4 S m −1 , elevated to 2.76×10 4 S m −1 after annealing treatment. The ecofriendly and low-cost GR/ACNTs coating with 10 wt% ACNTs prominently reduced the operating temperature of LEDs by 8.6°C, acting as potential thermal management materials in practical applications.

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