Lithium Ion Capacity of Single Wall Carbon Nanotube Paper Electrodes

Landi, Brian J.; Ganter, Matthew J.; Schauerman, Christopher M.; Cress, Cory D.; Raffaelle, Ryne P.

doi:10.1021/jp710921k

Cited by 93 publications

(77 citation statements)

References 65 publications

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“…Previously, Pushparaj et al (25) fabricated ''paper batteries'' with CNTs themselves as the active electrode material for Li-ion batteries. However, as an active material, CNTs suffer from issues of poor initial Coulomb efficiency, unsuitable voltage profiles, and fast-capacity decay (25,37). Instead of using the CNTs to store lithium ions, we used them to function as lightweight current collectors to achieve practical batteries with a long cycle life.…”

Section: Resultsmentioning

confidence: 99%

Highly conductive paper for energy-storage devices

Hu¹,

Choi²,

Yang³

et al. 2009

Proc. Natl. Acad. Sci. U.S.A.

1,163

899

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Paper, invented more than 2,000 years ago and widely used today in our everyday lives, is explored in this study as a platform for energy-storage devices by integration with 1D nanomaterials. Here, we show that commercially available paper can be made highly conductive with a sheet resistance as low as 1 ohm per square (⍀/sq) by using simple solution processes to achieve conformal coating of single-walled carbon nanotube (CNT) and silver nanowire films. Compared with plastics, paper substrates can dramatically improve film adhesion, greatly simplify the coating process, and significantly lower the cost. Supercapacitors based on CNT-conductive paper show excellent performance. When only CNT mass is considered, a specific capacitance of 200 F/g, a specific energy of 30 -47 Watt-hour/kilogram (Wh/kg), a specific power of 200,000 W/kg, and a stable cycling life over 40,000 cycles are achieved. These values are much better than those of devices on other flat substrates, such as plastics. Even in a case in which the weight of all of the dead components is considered, a specific energy of 7.5 Wh/kg is achieved. In addition, this conductive paper can be used as an excellent lightweight current collector in lithiumion batteries to replace the existing metallic counterparts. This work suggests that our conductive paper can be a highly scalable and low-cost solution for high-performance energy storage devices.conformal coating ͉ carbon nanotubes ͉ nanomaterial ͉ solution process P rintable solution processing has been exploited to deposit various nanomaterials, such as fullerene, carbon nanotubes (CNTs), nanocrystals, and nanowires for large-scale applications, including thin-film transistors (1-3), solar cells (4, 5), and energy-storage devices (6, 7), because the process is low-cost while maintaining the unique properties of the nanomaterials. In these processes, flat substrates, such as glass, metallic films, Si wafers, and plastics, have been used to hold nanostructure films. Nanostructured materials are usually first capped with surfactant molecules so that they can be well-dispersed as separated particles in a solvent to form ''ink.'' The ink is then deposited onto the flat substrates, followed by surfactant removal and solvent evaporation. To produce high-quality films, significant efforts have been spent on ink formulation and rheology adjustment. Moreover, because the surfactants are normally insulating, and thus limit the charge transfer between the nanomaterials, their removal is particularly critical. However, this step involves extensive washing and chemical displacement, which often cause mechanical detachment of the film from the flat substrate. Polymer binders or adhesives have been used to improve the binding of nanomaterials to substrates, but these can also cause an undesirable decrease in the film conductivity. These additional procedures increase the complexity of solution processing and result in high cost and low throughput. Here, we exploit paper substrates used in daily life to solve these issues a...

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Section: Resultsmentioning

confidence: 99%

Highly conductive paper for energy-storage devices

Hu¹,

Choi²,

Yang³

et al. 2009

Proc. Natl. Acad. Sci. U.S.A.

1,163

899

View full text Add to dashboard Cite

show abstract

“…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%

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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“…The most common process is a ltration method to lter CNTs and a carbon black mixture suspension through certain size pores contained in a PVDF membrane under positive pressure followed by peeling off the CNT mat from the PVDF membrane aer vacuum drying. 36,44,45 The CNT array (CNTA) anode can be prepared by transfer or direct growth methods. Generally, silicon and quartz wafers are more suitable for CNT growth, and thus asgrown CNTs have to be peeled off and transferred to the current collector.…”

mentioning

confidence: 99%

Nanostructured anode materials for lithium-ion batteries: principle, recent progress and future perspectives

et al. 2017

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As the most commonly used potential energy conversion and storage devices, lithium-ion batteries (LIBs) have been extensively investigated for a wide range of fields including information technology, electric and hybrid vehicles, aerospace, etc. Endowed with attractive properties such as high energy density, long cycle life, small size, low weight, few memory effects and low pollution, LIBs have been recognized as the most likely approach to be used to store electrical power in the future. This review will start with a brief introduction to charge-discharge principles and performance assessment indices. The advantages and disadvantages of several commonly studied anode materials including carbon, alloys, transition metal oxides and silicon along with lithium intercalation will be reviewed. The mechanism and synthesis methods, followed by strategies to enhance battery performance by virtue of interesting structural designs will be examined. Finally, a few issues needing further exploration will be discussed followed by a brief outline of the prospects and outlook for the LIB field.

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Lithium Ion Capacity of Single Wall Carbon Nanotube Paper Electrodes

Cited by 93 publications

References 65 publications

Highly conductive paper for energy-storage devices

Highly conductive paper for energy-storage devices

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

Nanostructured anode materials for lithium-ion batteries: principle, recent progress and future perspectives

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