Functions of polymers in composite electrodes of lithium ion batteries

Lestriez, Bernard

doi:10.1016/j.crci.2010.01.018

Cited by 150 publications

(107 citation statements)

References 85 publications

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“…Thed evelopment of water-soluble binders has substantially alleviated the environmental impact of this process by avoiding the useo ft oxic organic solvents. [4][5][6][7] The aqueousm ethodh as been successfullya pplied by battery manufacturers to graphite-based anodes,b ut it is not as practical in the case of lithium transition-metal-oxidec omposite cathodes, [8][9][10] which still requireN MP as solventd ue to the use of high-molecular-weight polyvinylidene fluoride (PVDF) binder. In terms of processing, the fabrication of LIB electrodes mainly includes slurry preparation, electrode coating, and drying, which are the essential components of conventional solvent-based coating processes.T hese processes usually involve large space occupation by the equipment and high energy inputf or solvent removal/recovery.I n recent years,a lternative coating technologies that are more economicala nd energy efficient have been developed to replace the solvent-based approachi nm any applications.…”

Section: Introductionmentioning

confidence: 99%

High‐Speed Fabrication of Lithium‐Ion Battery Electrodes by UV‐Curing

Xue

Amine

et al. 2015

Energy Tech

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In this study,U V-curing was investigated as an alternative methodt op rovide fast productiono fc omposite cathodes and significantlyreducethe time and energy required for solvent removal in lithium-ion battery fabrication. To serve our purpose,l ow-molecular-weight polysiloxane acrylate (PSA) was designed and synthesized from ap olysiloxane epoxide precursor. In the presence of the acrylic acid additive LiNi 1/ 3 Mn 1/3 Co 1/3 O 2 (NMC), electrode laminates containing 10 wt %P SA binder were successfully fabricated by UVcuring. Thec ured electrode exhibited good mechanical and electrochemical properties.A tc urrent rates up to C/3, the cell performanceo ft he UV-cured NMC electrode was comparable to that of conventional polyvinylidenef luoride (PVDF)-bound NMC electrode.O ur initial success in applying high-speed UV-curing in composite electrode fabrication has provedt hat it is ap romising route to substantially reducing the capital and operation costs of lithium-ion battery electrodem anufacturing and additionally bringing abouti mportant environmental benefits.

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Section: Introductionmentioning

confidence: 99%

High‐Speed Fabrication of Lithium‐Ion Battery Electrodes by UV‐Curing

Xue

Amine

et al. 2015

Energy Tech

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“…In recent years, new binder development includes (1) seeking new electronically conductive binders with high elasticity in order to accommodate the large volume change of AMs during insertion and extraction of lithium-ions, 7,[10][11][12][13][14][15][16][17] (2) replacing the costly, environmentally unfriendly, and volatile organic solvent used in the manufacturing of electrode, [18][19][20] and (3) increasing the adhesion strength between the binder and other components of electrode (AMs and conductive materials in general). 5,[21][22][23][24][25][26] However, the development of binders is hindered by the lack of standard tests of binder adhesion properties and a fundamental understanding of adhesion mechanism.…”

mentioning

confidence: 99%

Unveiling the Roles of Binder in the Mechanical Integrity of Electrodes for Lithium-Ion Batteries

Chen

Liu

et al. 2013

J. Electrochem. Soc.

159

102

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In lithium-ion secondary batteries research, binders have received the least attention, although the electrochemical performance of Li-ion batteries such as specific capacity and cycle life cannot be achieved if the adhesion strengths between electrode particles and between electrode films and current collectors are insufficient to endure charge-discharge cycling. In this paper, the roles of binders in the mechanical integrity of electrodes for lithium-ion batteries were studied by coupled microscratch and digital image correlation (DIC) techniques. A microscratch based composite model was developed to decouple the carbon particle/particle cohesion strength from the electrode-film/copper-current-collector adhesion strength. The dependences of microscratch coefficient of friction and the critical delamination load on the PVDF binder content suggest that the strength of different interfaces is ranked as follows: Cu/PVDF < carbon-particle/PVDF < PVDF/PVDF. The particle/particle cohesion strength increases while electrode-film/current-collector adhesion strength decreases with increasing PVDF binder content (up to 20% of binder). The electrolyte soaking-and-drying process leads to an increase in particle/particle cohesion but a decrease in electrode-film/copper-current-collector adhesion. Finally, the methodology developed here can provide new guidelines for binder selection and electrode design and lay a constitutive foundation for modeling the mechanical properties and performance of the porous electrodes in lithium-ion batteries.

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“…Binder serves as a polymeric matrix that connects active materials to each other and to the current collector in a composite Li-ion battery electrode, and accommodates volume changes due to de-/lithiation of active materials during battery operation. An ideal binder should have: (a) high binding strength, (b) favorable mechanical properties to accommodate volume changes, (c) high electronic conductivity, (d) optimal porous structure for high ionic conductivity and (e) chemical inertness [16,150]. Currently, polyvinylidene fluoride (PVDF) is the most common binder despite its shortcomings.…”

Section: Bindermentioning

confidence: 99%

“…Specifically, the nanocomposite-based developments in cathode, anode, binder and separator materials for Li-ion batteries are discussed in detail. Readers can also benefit from the following review articles based exclusively on cathodes [12,13], anodes [14,15], binders [16,17] and separators [18].…”

Section: Propertiesmentioning

confidence: 99%

A Review on Nanocomposite Materials for Rechargeable Li-ion Batteries

2017

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Li-ion batteries are the key enabling technology in portable electronics applications, and such batteries are also getting a foothold in mobile platforms and stationary energy storage technologies recently. To accelerate the penetration of Li-ion batteries in these markets, safety, cost, cycle life, energy density and rate capability of the Li-ion batteries should be improved. The Li-ion batteries in use today take advantage of the composite materials already. For instance, cathode, anode and separator are all composite materials. However, there is still plenty of room for advancing the Li-ion batteries by utilizing nanocomposite materials. By manipulating the Li-ion battery materials at the nanoscale, it is possible to achieve unprecedented improvement in the material properties. After presenting the current status and the operating principles of the Li-ion batteries briefly, this review discusses the recent developments in nanocomposite materials for cathode, anode, binder and separator components of the Li-ion batteries.

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Functions of polymers in composite electrodes of lithium ion batteries

Cited by 150 publications

References 85 publications

High‐Speed Fabrication of Lithium‐Ion Battery Electrodes by UV‐Curing

High‐Speed Fabrication of Lithium‐Ion Battery Electrodes by UV‐Curing

Unveiling the Roles of Binder in the Mechanical Integrity of Electrodes for Lithium-Ion Batteries

A Review on Nanocomposite Materials for Rechargeable Li-ion Batteries

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