A comparative study of electrochemical properties of two kinds of carbon nanotubes as anode materials for lithium ion batteries

Yang, Shubin; Huo, Junping; Song, Huaihe; Chen, Xiaohong

doi:10.1016/j.electacta.2007.09.040

Cited by 148 publications

(98 citation statements)

References 21 publications

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“…Indeed, this may be illustrated when considering shorter CNTs, which have displayed enhanced performance over longer CNTs as a result of an increasing number of structural (lateral) defects [139,144]. In this case, increasing the density of graphitic edges in the MWCNT results in a greater capacity, while structurally shortening may result in fewer instances of Li + trapping and thus, fewer irreversible losses [139,144]. An improved rate capability was also displayed as a result of lower electrical resistance [139].…”

Section: Carbonmentioning

confidence: 99%

“…The intercalation chemistry of CNTs is therefore highly dependent on both their internal and external structuring, where a number of defects or surface functionalities may influence properties. Indeed, this may be illustrated when considering shorter CNTs, which have displayed enhanced performance over longer CNTs as a result of an increasing number of structural (lateral) defects [139,144]. In this case, increasing the density of graphitic edges in the MWCNT results in a greater capacity, while structurally shortening may result in fewer instances of Li + trapping and thus, fewer irreversible losses [139,144].…”

Section: Carbonmentioning

confidence: 99%

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Evaluating the performance of nanostructured materials as lithium-ion battery electrodes

et al. 2013

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Access to the full text of the published version may require a subscription. Rights © Tsinghua University Press and Springer-Verlag Berlin ABSTRACTThe performance of the lithium-ion cell is heavily dependent on the ability of the host electrodes to accommodate and release Li + ions from the local structure. While the choice of electrode materials may define parameters such as cell potential and capacity, the process of intercalation may be physically limited by the rate of solid-state Li + diffusion. Increased diffusion rates in lithium-ion electrodes may be achieved through a reduction in the diffusion path, accomplished by a scaling of the respective electrode dimensions.In addition, some electrodes may undergo large volume changes associated with charging and discharging, the strain of which, may be better accommodated through nanostructuring. Failure of the host to accommodate such volume changes may lead to pulverisation of the local structure and a rapid loss of capacity. In this review article, we seek to highlight a number of significant gains in the development of nanostructured lithium-ion battery architectures (both anode and cathode), as drivers of potential next-generation electrochemical energy storage devices.

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Section: Carbonmentioning

confidence: 99%

Section: Carbonmentioning

confidence: 99%

Evaluating the performance of nanostructured materials as lithium-ion battery electrodes

et al. 2013

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“…30 The impedance plots can be explained using the equivalent circuit shown in Fig. 6b, 24,39 where R e is the electrolyte resistance, C f and R f are the capacitance and resistance of SWCNT film electrodes, and C dl and R ct are the double-layer capacitance and chargetransfer resistance, respectively; Z w is the Warburg impedance related to the ionic diffusion in the SWCNT films. In Fig.…”

mentioning

confidence: 99%

Compact-designed supercapacitors using free-standing single-walled carbon nanotube films

Niu

Zhou

Chen

et al. 2011

Energy Environ. Sci.

320

214

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We reported the realization of assembling compact-designed supercapacitors using large-scaled freestanding and flexible single-walled carbon nanotube (SWCNT) films as both anode and cathode. A prototype of the processing procedures was developed to obtain the uniform spreading of the SWCNT films onto the separators serving as both electrodes and charge collectors without metallic current collectors, leading to a simplified and lightweight architecture. The area of SWCNT film on a separator can be scaled up and its thickness can be extended. High energy and power densities (43.7 Wh kg -1 and 197.3 kW kg -1 , respectively) were achieved from the prepared SWCNT film-based compact-designed supercapacitors with small equivalent series resistance. The specific capacitance of this kind of compact-designed SWCNT film supercapacitor is about 35 F g -1 . These results clearly show the potential application of free-standing SWCNT film in compact-designed supercapacitor with enhanced performance and significantly improved energy and power densities. We reported the realization of assembling compact-designed supercapacitors using large-scaled freestanding and flexible single-walled carbon nanotube (SWCNT) films as both anode and cathode. A prototype of the processing procedures was developed to obtain the uniform spreading of the SWCNT films onto the separators serving as both electrodes and charge collectors without metallic current collectors, leading to a simplified and lightweight architecture. The area of SWCNT film on a separator can be scaled up and its thickness can be extended. High energy and power densities (43.7 Wh kg À1 and 197.3 kW kg À1, respectively) were achieved from the prepared SWCNT film-based compact-designed supercapacitors with small equivalent series resistance. The specific capacitance of this kind of compact-designed SWCNT film supercapacitor is about 35 F g À1 . These results clearly show the potential application of free-standing SWCNT film in compact-designed supercapacitor with enhanced performance and significantly improved energy and power densities.

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“…was unmistakably confirmed. 9,10 The lack of well-defined potentials for the Li insertion or removal were also seen in the cyclic voltammograms.…”

Section: Sgobba and Guldi (Continued From Previous Page)mentioning

confidence: 99%

Perspectives on Electrochemical Insertion of Lithium in Carbon Nanotubes

Sgobba

Guldi

2010

Electrochem. Soc. Interface

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A comparative study of electrochemical properties of two kinds of carbon nanotubes as anode materials for lithium ion batteries

Cited by 148 publications

References 21 publications

Evaluating the performance of nanostructured materials as lithium-ion battery electrodes

Evaluating the performance of nanostructured materials as lithium-ion battery electrodes

Compact-designed supercapacitors using free-standing single-walled carbon nanotube films

Perspectives on Electrochemical Insertion of Lithium in Carbon Nanotubes

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