Synthesis of graphene-multiwalled carbon nanotubes hybrid nanostructure by strengthened electrostatic interaction and its lithium ion battery application

Vinayan, B. P.; Nagar, Rupali; Raman, V.; Rajalakshmi, N.; Dhathathreyan, K. S.

doi:10.1039/c2jm16294f

Cited by 268 publications

(146 citation statements)

References 30 publications

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“…This observation was found to be in agreement with reported shifting of the said band in polyester carbonyl groups due to the increase in crystallinity [41]. The absorption band at 1633 cm −1 belongs to C=C [42,43]. The series of bands between 1543 and 1450 cm −1 were reported to be due to CH bending of methyl and methylene groups [41]; this region is also known to overlap with C-O-C stretching vibrations [43,44].…”

Section: Characterization Of Polymer Nanocompositesupporting

confidence: 80%

Carbon Nanofibers‐Poly‐3‐hydroxyalkanoates Nanocomposite: Ultrasound‐Assisted Dispersion and Thermostructural Properties

Gumel

Annuar

Ishak

et al. 2014

Journal of Nanomaterials

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The conductivity and high surface-to-volume ratio of carbon nanofibers (CNFs) composited with the medium-chain-length poly-3-hydroxyalkanoate (mcl-PHA) have attracted much attention as smart biomaterial. However, poor CNF dispersion leads to tactoid agglomerated composite with poor crystallite morphology resulting in inferior thermomechanical properties. We employed acoustic sonication to enhance the construction of exfoliated PHA/CNFs nanocomposites. The effects of CNF loading and the insonation variables (power intensity, frequency, and time) on the stability and microscopic morphology of the nanocomposites were studied. Sonication improved the dispersion of CNFs into the polymer matrix, thereby improving the physical morphology, crystallinity, and thermomechanical properties of the nanocomposites. For example, compositing the polymer with 10% w/w CNF resulted in 66% increase in crystallite size, 46% increase in micromolecular elastic strain, and 17% increase in lattice strain. Nevertheless, polymer degradation was observed following the ultrasound exposure. The constructed bionanocomposite could potentially be applied for organic electroconductive materials, biosensors and stimuli-responsive drug delivery devices.

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Section: Characterization Of Polymer Nanocompositesupporting

confidence: 80%

Carbon Nanofibers‐Poly‐3‐hydroxyalkanoates Nanocomposite: Ultrasound‐Assisted Dispersion and Thermostructural Properties

Gumel

Annuar

Ishak

et al. 2014

Journal of Nanomaterials

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“…[ 70 ] However, their lithium-ion storage performances were not very promising (Table 1 ). Several other structures such as aerogel-derived RGO paper, [ 71 ] functionalized-RGO/carbon nanotubes hybrid [ 72 ] and RGO/sulfur-doped porous carbons [ 73 ] (with carbons derived from the 1-butyl-3-methylimidazolium hydrosulfate ionic liquid) were also reported (Table 1 ). Nevertheless, despite the enhanced cycling stability of the RGO/ sulfur-doped porous carbons, [ 73 ] no effective progress could be clearly appreciated in the other cases.…”

Section: Continuedmentioning

confidence: 99%

Critical Insight into the Relentless Progression Toward Graphene and Graphene‐Containing Materials for Lithium‐Ion Battery Anodes

et al. 2016

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that its extraordinary properties would enable revolutionary new technologies, which gave birth to the "graphene era". [ 3,4 ] Relying on this scenario, in 2013, the European Union launched the ¤1 billion "Graphene Flagship" project aimed to investigate the properties of this new form of carbon for various applications (e.g., electronics, sensors and energy storage devices), with the ambitious goal of guiding graphene from laboratories to commercial applications within a decade. [ 5,6 ] In the same period, the Chinese Government set up a similar investment to mass-produce graphene as thin fi lms (e.g., for touchscreen electrodes) and platelets (e.g., for use in batteries). [ 6 ] In the following years, hundreds of patents, mainly focused on manufacturing and application in energy storage, were fi led and the worldwide production of graphene and graphene-containing materials rapidly increased. Although a few Chinese industries claimed to already use graphene-containing materials for smartphone production, no revolutionary practical application relying on graphene has been yet developed. [ 6 ] Specifi cally with respect to the battery fi eld, a close analysis of the scientifi c literature reveals a struggle to meet the ambitious initial targets. A potential loss of focus from the fi nal application caused by hype and ease of publication on such a novel matter, together with the delivery of very misleading information [ 7,8 ] and erroneous statements [ 7 ] concerning the use of graphene in batteries are emerging as possible reasons of the ineffective graphene-era outburst. In this progress report, we do not focus on production and classifi cation of graphene and graphene-containing materials, which were already well reported in the past years. [ 3,[9][10][11] In contrast, due to the lack of an exhaustive analysis of the progression of the use of such materials in lithium-ion battery (LIB) anodes, we report here a critical evaluation of the most prominent research papers published from 2008 until the end of 2015. As shown in Figure 1 , three different stages of the graphene research in LIB anodes can be distinguished: a fi rst stationary phase between 2008 and 2010 where the lithium-ion storage properties of different graphene and graphene-containing materials were preliminarily explored, a second exponential stage, spanning from 2010 to 2014, where graphene and graphene-containing anode materials were broadly developed and investigated, and fi nally, a third phase, (i.e., starting from 2015), where the research seems to have approached a plateau. After Used as a bare active material or component in hybrids, graphene has been the subject of numerous studies in recent years. Indeed, from the fi rst report that appeared in late July 2008, almost 1600 papers were published as of the end 2015 that investigated the properties of graphene as an anode material for lithium-ion batteries. Although an impressive amount of data has been collected, a real advance in the fi eld still seems to be missing. In this framework, atten...

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“…The weak peaks at around 2920 cm −1 and 1410 cm −1 are attributed to the stretching vibrations of asymmetric CH 2 and C-OH, respectively. The peaks ranging from 1580 cm −1 to 1640 cm −1 are the characteristic C = C stretching [50]. From the FTIR peak intensities and positions, the type and amount of the surface functional groups of CNTs and AC are similar, which are much more than that of AB.…”

Section: Article In Pressmentioning

confidence: 78%

Comparisons of heat treatment on the electrochemical performance of different carbons for lithium-oxygen cells

Guan

Wang

Luo

et al. 2014

Electrochimica Acta

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Synthesis of graphene-multiwalled carbon nanotubes hybrid nanostructure by strengthened electrostatic interaction and its lithium ion battery application

Cited by 268 publications

References 30 publications

Carbon Nanofibers‐Poly‐3‐hydroxyalkanoates Nanocomposite: Ultrasound‐Assisted Dispersion and Thermostructural Properties

Carbon Nanofibers‐Poly‐3‐hydroxyalkanoates Nanocomposite: Ultrasound‐Assisted Dispersion and Thermostructural Properties

Critical Insight into the Relentless Progression Toward Graphene and Graphene‐Containing Materials for Lithium‐Ion Battery Anodes

Comparisons of heat treatment on the electrochemical performance of different carbons for lithium-oxygen cells

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