Flexible free-standing carbon nanotube films for model lithium-ion batteries

Chew, Sau Yen; Ng, See How; Wang, Jiazhao; Novák, Petr; Krumeich, Frank; Chou, Shulei; Chen, Jun; Liu, Huan

doi:10.1016/j.carbon.2009.06.045

Cited by 324 publications

(233 citation statements)

References 36 publications

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“…Alternative carbon architectures may boost Li + storage capacity as a result of a greater number of available Li + insertion sites. Examples of 1D carbons which have attracted attention include single-walled and multi-walled carbon nanotubes (S/MWCNTs), [132][133][134][135][136][137][138][139][140] carbon nanofibres [141,142] and carbon nanofibre/nanotube composites [143]. Carbon nanotubes (CNTs), consist of 2D graphene sheets rolled into single or multiple layers, which display enhanced properties such as rapid electronic conductivity and increased capacity as a result of their unique structuring.…”

Section: Carbonmentioning

confidence: 99%

“…Carbon nanotubes (CNTs), consist of 2D graphene sheets rolled into single or multiple layers, which display enhanced properties such as rapid electronic conductivity and increased capacity as a result of their unique structuring. CNTs may be grown in paper-like form [135,137], or more conveniently, in free-standing form grown directly on conducting current collectors or glassy carbon [133,138]. MWCNTs grown in this fashion have displayed highly reversible cycle behaviour resulting in a capacity of 575 mA h g -1 after 100 cycles at a current density of 0.2 mA cm -2 ( Fig.…”

Section: Carbonmentioning

confidence: 99%

“…Despite displaying long cycle-life, MWCNTs grown on stainless steel substrates suffer from pulverisation of their structure and surface defects, as a result of continued electrochemical cycling [138]. A comparison of MWCNTs versus their single-walled and double-walled counterparts reveals that MWCNTs are the choice anode material due to fewer irreversible losses on cycling [135]. In addition, cyclic voltammetry studies have shown only MWCNTs behave in a similar fashion to graphitic carbon, where the surface chemistry of MWCNTs is less dominant compared to single and double-walled carbon nanotubes [135].…”

Section: Carbonmentioning

confidence: 99%

“…A comparison of MWCNTs versus their single-walled and double-walled counterparts reveals that MWCNTs are the choice anode material due to fewer irreversible losses on cycling [135]. In addition, cyclic voltammetry studies have shown only MWCNTs behave in a similar fashion to graphitic carbon, where the surface chemistry of MWCNTs is less dominant compared to single and double-walled carbon nanotubes [135]. 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.…”

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%

Section: Carbonmentioning

confidence: 99%

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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“…Then, the solution was probe sonicated for 1 hour with a 2 second pause time, followed by vacuum filtration and washing with de-ionized water and ethanol. The polytetrafluoroethylene (PTFE) filter paper with the SWCNT layer was dried under vacuum overnight at 60 o C, and finally, the SWCNT layer was easily peeled off from the filter paper [35]. Figure S4 shows the easy peeling of the FSL.…”

Section: 2mentioning

confidence: 99%

A systematic approach to high and stable discharge capacity for scaling up the lithium–sulfur battery

Kaiser

Wang

Liang

et al. 2015

Journal of Power Sources

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Dou, S. (2015). A systematic approach to high and stable discharge capacity for scaling up the lithium-sulfur battery. Journal of Power Sources, 279 231-237. Journal of Power Sources A systematic approach to high and stable discharge capacity for scaling up the lithium-sulfur battery AbstractA systematic approach to improving the performance of the Li-S battery is presented, based on applying high energy ball milling to create a porous sulfur-carbon composite, insertion of a free-standing layer, and adoption of a new charging method. Surface area analysis and field emission scanning electron microscope imaging show that the ball-milled sulfur powder has a porous structure and very high specific surface area. A vacuumfiltrated single-walled carbon nanotube free-standing layer is inserted in between the sulfur cathode and the separator. It is believed that high-surface-area porous sulfur will help to increase the conductivity of the elemental sulfur due to better adhesion between the conducting carbon and the sulfur, while the free-standing layer will sequester longer chain polysulfides, which are responsible for the well-known shuttling phenomenon. By the combination of these methods, we have achieved excellent capacity and cycle life. Finally, a new charging method which will largely prevent the formation of longer chain polysulfides is also applied to increase the capacity retention. It is believed that with the combination of ball milling, the freestanding layer, and the new charging method, it is possible to commercialize the Li-S battery with better capacity and cycle life. Disciplines Engineering | Science and Technology Studies Publication DetailsKaiser, M. Rejaul., Wang, J., Liang, X., Liu, H. & Dou, S. (2015). A systematic approach to high and stable discharge capacity for scaling up the lithium-sulfur battery. AbstractA systematic approach to improving the performance of the Li-S battery is presented, based on applying high energy ball milling to create a porous sulfur-carbon composite, insertion of a free-standing layer, and adoption of a new charging method. Surface area analysis and field emission scanning electron microscope imaging show that the ball-milled sulfur powder has a porous structure and very high specific surface area. A vacuum-filtrated single-walled carbon nanotube free-standing layer is inserted in between the sulfur cathode and the separator. It is believed that high-surface-area porous sulfur will help to increase the conductivity of the elemental sulfur due to better adhesion between the conducting carbon and the sulfur, while the free-standing layer will sequester longer chain polysulfides, which are responsible for the well-known shuttling phenomenon. By the combination of these methods, we have achieved excellent capacity and cycle life. Finally, a new charging method which will largely prevent the formation of longer chain polysulfides is also applied to increase the capacity retention. It is believed that with the combination of ball milling, the free-standing layer, and the...

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