Water-soluble binders for MCMB carbon anodes for lithium-ion batteries

Courtel, Fabrice M.; Niketic, Svetlana; Duguay, Dominique; Abu-Lebdeh, Yaser; Davidson, Isobel

doi:10.1016/j.jpowsour.2010.10.025

Cited by 184 publications

(118 citation statements)

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“…Among the best tested solvents are 1-methyl-2-pyrrolidinone (NMP) [20][21][22] and halogenated aromatic solvents [23,24]. Even though NMP is widely used in the preparation of electrodes for Li-ion batteries which makes it a natural choice, its toxicity and environmental hazard prompted research toward its replacement with environmentally friendly solvents [25,26]. Greener approach for graphite exfoliation was applied by using water solutions of surfactants [27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Graphene/Na carboxymethyl cellulose composite for Li-ion batteries prepared by enhanced liquid exfoliation

Naboka

Yim

Abu-Lebdeh

2016

Materials Science and Engineering: B

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Vous avez des questions? Nous pouvons vous aider. Pour communiquer directement avec un auteur, consultez la première page de la revue dans laquelle son article a été publié afin de trouver ses coordonnées. Si vous n'arrivez pas à les repérer, communiquez avec nous à PublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. Questions? Contact the NRC Publications Archive team atPublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. If you wish to email the authors directly, please see the first page of the publication for their contact information. NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://doi.org/10.1016/j.mseb.2016.04.003Access and use of this website and the material on it are subject to the Terms and Conditions set forth at Graphene/Na carboxymethyl cellulose composite for Li-ion batteries prepared by enhanced liquid exfoliation Naboka, Olga; Yim, Chae-Ho; Abu-Lebdeh, Yaser http://nparc.cisti-icist.nrc-cnrc.gc.ca/fra/droits L'accès à ce site Web et l'utilisation de son contenu sont assujettis aux conditions présentées dans le site LISEZ CES CONDITIONS ATTENTIVEMENT AVANT D'UTILISER CE SITE WEB. NRC Publications Record / Notice d'Archives des publications de CNRC:http://nparc.cisti-icist.nrc-cnrc.gc.ca/eng/view/object/?id=53b49153-7e23-4e60-9847-41177eef882f http://nparc.cisti-icist.nrc-cnrc.gc.ca/fra/voir/objet/?id=53b49153-7e23-4e60-9847-41177eef882f In the present work, we report a sonication-assisted exfoliation method of graphene preparation enhanced by the use of microwave heating and "green" exfoliant -sodium carboxymethyl cellulose (NaCMC). Introducing microwave heating during sonication of graphite dispersions in aqueous solutions of NaCMC results in the formation of graphene dispersions with concentration as high as 4.29 mg/ml. It is found that drying the dispersions results in the formation of graphene/NaCMC composites with graphene content up to 38.65 wt%. A study of the composite with High Resolution Transmission Electron Microscopy and Raman Spectroscopy reveals the formation of few-layer graphene approximately below five layers. The as-prepared graphene/NaCMC composite shows higher capacities than commercial graphite in Li-ion half cells reaching 397 mAh/g (graphene) . Also, when the composite is used with a nanosilicon (33 wt%) in a Li-ion half cell high initial reversible capacities of 1611 mAh/g (Si) with good cyclability and rate capability have been reached.

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Section: Introductionmentioning

confidence: 99%

Graphene/Na carboxymethyl cellulose composite for Li-ion batteries prepared by enhanced liquid exfoliation

Naboka

Yim

Abu-Lebdeh

2016

Materials Science and Engineering: B

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“…[11][12][13][14] Thus, with the aim for cheaper, safer and environmentally friendlier batteries, water-soluble binders have gained great significance. 13,[15][16][17][18] Aqueous * Electrochemical Society Active Member. z E-mail: guk-tae.kim@kit.edu; stefano.passerini@kit.edu electrode processing is easier and cheaper compared to the solventbased approach (i.e., PVdF), because there is no need for, e.g., controlling of humidity during electrode production.…”

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confidence: 99%

Polyurethane Binder for Aqueous Processing of Li-Ion Battery Electrodes

Loeffler

Kopel²,

Kim

et al. 2015

J. Electrochem. Soc.

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In this manuscript the investigation of the heat-curable polyurethane (PU)/carboxymethyl cellulose (CMC) mixture as binder for Li-ion battery electrodes is reported. The experimental results demonstrate the outstanding thermal and electrochemical stability of PU, as well as the good electrochemical performance of cathode (NMC) and anode (graphite) electrodes in which PU is used as binder. The most important finding is the ability of PU to prevent current collector corrosion usually occurring when an aqueous dispersion (slurry) of NMC is coated on aluminum foils. SEM investigation shows that PU encapsulates the positive active material particles preventing a pH raise in the slurry. Finally, the cycling performance of PU/CMC based anodes and cathodes are tested in half as well as full lithium-ion cell setups. The awareness of the finite nature of our earth´s natural resources as well as growing concerns for increased greenhouse gas emissions are leading to a strong demand for a more environmentally-friendly generation of energy. Considering the importance of sustainable energy solutions, strong efforts are made to develop improved systems for large and small scale energy storage.1,2 Currently, Li-ion batteries seem to be suitable energy storage devices to fulfil the requirements of small energy storage due to their high energy density and long lifetime.3 Additionally, their lightweight fulfils very well the rising demand for use in smartphones, computers and other portable devices, as well as for electromobility solutions, facilitating the development toward a modern mobile society.Lithium-ion batteries are composed of several materials including metals and metal oxides, graphite and other carbonaceous materials, organic solvents, lithium salts and polymers. These latter are present in the porous separator, laying in between the electrodes (usually a polyolefin), and as binding components in the composite electrodes. Binders are counted among the so-called inactive components since they do not directly contribute to the capacity of the cells. However, their key role in the electrode processing and their dramatic influence on the electrochemical performance of electrodes has been extensively outlined. [4][5][6] Relevant physical and chemical properties for binder materials are (i) thermal stability, chemical and electrochemical stabilities, (ii) tensile strength (strong adhesion and cohesion), (iii) flexibility, and (iv) viscosity (of the slurries). 4,[7][8][9] The main purpose of using a binder is to form stable networks of the solid electrode components, i.e., the active materials and conducting agents (cohesion). Moreover, the binder has to ensure a close contact of the composite electrode toward the current collector (adhesion).In state-of-the-art commercial Li-ion batteries polyvinylidene-difluoride (PVdF) is the binder material of choice due to its superior adhesion properties and electrochemical stability.10 Important points of criticism for this polymer, however, are the requirement of volatile and toxic so...

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“…9 Most of these studies were performed with the commercially available binder, polyvinylidene fluoride (PVDF), which is widely used in Li-ion batteries because of its electrochemical stability at the high voltage range. 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.…”

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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.

142

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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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Water-soluble binders for MCMB carbon anodes for lithium-ion batteries

Cited by 184 publications

References 34 publications

Graphene/Na carboxymethyl cellulose composite for Li-ion batteries prepared by enhanced liquid exfoliation

Graphene/Na carboxymethyl cellulose composite for Li-ion batteries prepared by enhanced liquid exfoliation

Polyurethane Binder for Aqueous Processing of Li-Ion Battery Electrodes

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

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