Recent Progress on Polymeric Binders for Silicon Anodes in Lithium-Ion Batteries

Choi, Nam‐Soon; Ha, Se-Young; Lee, Yong-Won; Jang, Jun Yeong; Jeong, Mi-Young; Shin, Woo Cheol; Ue, Makoto

doi:10.5229/jecst.2015.6.2.35

Cited by 39 publications

(28 citation statements)

References 49 publications

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“…Preparation of Si anodes from a high viscoelasticity of SA/Ca gel as slurry, lead to a high coulombic efficiency during the lithiation/delithiation process of Si anodes, even by cycle numbers of 70. Similar trends are reviewed also in Reference .…”

Section: Efforts To Enhance the Si Electrode Stabilitysupporting

confidence: 59%

“…Polymer binder for Si has also to fulfill some requirements such as; Advanced mechanical properties to avoid cracks Improved dispersivity for Si and carbon additives Improved adhesion on Cu electrode Li + ion transport ability …”

Section: Efforts To Enhance the Si Electrode Stabilitymentioning

confidence: 99%

“…When the charge‐discharge current density was increased and even with low ratio of binder (15%), the Si/C electrode with alginate hydrogel reached a stable and improved cycling performance. Some of the studies utilizing hydrogels for Si anodes are listed in References .…”

Section: Efforts To Enhance the Si Electrode Stabilitymentioning

confidence: 99%

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An overview on efforts to enhance the Si electrode stability for lithium ion batteries

2019

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This report summarizes the challenges and developments related to the cycle stability of Si anodes. It describes the two-component material concepts using polymer blends and the approaches to material optimization for more stable Si anodes. Since the anode behavior also depends strongly on the Si particle size (and in polymer mixtures no uniform Si particle size is given), the properties of the Si anodes depending on the Si particle size and the underlying fundamental processes at the solid-electrolyte interface were described shortly. Bicomponent silicon-based composites (carbon additives, inorganic nanoparticles and polymers) on the anode behavior were compared by two properties: specific capacity and cycle number of the anodes. This article focuses on Si-polymer blends where the polymer can act as a binder or/and as a solid-state electrolyte. To help further the understanding the role of polymer we have gathered together useful data from the literature on solubilities, flexibility and hardness for the polymers generally used. We offer a perspective for polymer hydrogels that will enable a promising material composition for stable Si anodes. K E Y W O R D Sconductive polymers, hydrogels, lithium ion battery, silicon anode, solid-electrolyte interphase 2 | CHALLENGES FOR SI ELECTRODES Si based anodes are quite instable, capacity decay, cracks on anode, failure of electrical conductivity and inhibition are problems to be solved.

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Section: Efforts To Enhance the Si Electrode Stabilitysupporting

confidence: 59%

Section: Efforts To Enhance the Si Electrode Stabilitymentioning

confidence: 99%

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An overview on efforts to enhance the Si electrode stability for lithium ion batteries

2019

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“…The paint manufacturing industry is historically one of the major investors in the development of new polymeric binders in order to improve the cohesion of pigment particles and adhesion to the coated substrate following evaporation of the solvent [1][2][3]. The electronics industry uses binders to improve the conductivity and mechanical strength of electrodes in batteries [4][5][6]. Binders are also used in rocket manufacturing to improve the safety and ballistic performance of propellants [7,8].…”

Section: Introductionmentioning

confidence: 99%

Thermomechanical characterisation of cross-linked β-cyclodextrin polyether binders

et al. 2019

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Cyclodextrins are promising building blocks for the synthesis of industrial binders. We determined the thermomechanical properties of a new binder prepared by cross-linking β-cyclodextrin with a variable amount of polyethylene glycol diglycidyl ether (40-60% w/w) to produce a soft polyether network that was soluble in water and alcohol. Increasing the amount of cross-linker reduced the glass transition temperature of the binder as determined by differential scanning calorimetry and dynamic mechanical analysis. Cooling experiments revealed sudden stress relief below the glass transition temperature, reflecting the de-bonding of the polymer from the metallic supports. This was prevented by contact with polytetrafluoroethylene tape. Optical microscopy confirmed the stress relief in the form of cracking and revealed self-healing by reptation, promoted by a higher cross-linker content and temperature. The influence of the support medium on the thermomechanical properties of the cross-linked β-cyclodextrins will help to optimise manufacturing and storage methods for new binders.

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“…Therefore, it will be beneficial to develop binders that can be processed with less toxic, or even non-toxic solvents. Recently, it was reported that water-based binder such as styrene-butadiene rubber (SBR) and carboxymethyl cellulose (CMC) effectively improves the cycling stability of silicon electrode [15][16][17][18][19][20][21][22][23][24][25][26] . According to a previous report by Hochgatterer et al [21] , the formation of a covalent chemical bond between the CMC and silicon particle plays an important role in the effective binding and improved performance.…”

Section: Introductionmentioning

confidence: 99%

Organic Solvent Free Process to Fabricate High Performance Silicon and Graphite Composite Anode

Xiao¹,

Zheng²,

Liu³

2018

Preprint

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Abstract:Cycling reliability is crucial for Si-based materials due to severe volume change during cycles that results in the fast capacity fading. Though the binder only occupies a very low amount of the total mass of anodes, it is proved to perform a key parameter to improve the cycle performance of Si-based anodes. Because they are eco-friendly and cost saving, water-based binders styrene-butadiene rubber (SBR) and carboxymethyl cellulose (CMC) are regarded as the better binder to substitute Poly (vinylidene difluoride) (PVDF) as the binder for Si-based anode. In this study, the anodes are fabricated by simply mixing the active materials (naso Si, graphite and conductive additive) together and using the mixture of SBR and CMC as a binder. The results showed that the retention capacities of the anodes are more than 440 mAh/g after 400 cycles. It indicates that it is an easy and simple way to make high performance anodes.

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Recent Progress on Polymeric Binders for Silicon Anodes in Lithium-Ion Batteries

Cited by 39 publications

References 49 publications

An overview on efforts to enhance the Si electrode stability for lithium ion batteries

An overview on efforts to enhance the Si electrode stability for lithium ion batteries

Thermomechanical characterisation of cross-linked β-cyclodextrin polyether binders

Organic Solvent Free Process to Fabricate High Performance Silicon and Graphite Composite Anode

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