Synthesis of Comb Polysiloxane Polyelectrolytes Containing Oligoether and Perfluoroether Side Chains

Snyder, James F.; Hutchison, John C.; Ratner, Mark A.; Shriver, Duward F.

doi:10.1021/cm0217396

Cited by 49 publications

(48 citation statements)

References 49 publications

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“…They found that the ionic transference numbers and diffusion coefficients were increased with the increase of the length of the EO side chain. Shriver et al [458][459][460] synthesized comb polyelectrolytes consisting of a polysiloxane backbone with EO and single-ion side chains. The detailed discussion will be shown in Section 4.4.…”

Section: Silane or Siloxane Corementioning

confidence: 99%

Poly(ethylene oxide)-based electrolytes for lithium-ion batteries

2015

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This article reviews the PEO-based electrolytes for lithium-ion batteries.Poly(ethylene oxide) (PEO) based materials are widely considered as promising candidates of polymer hosts in solid-state electrolytes for high energy density secondary lithium batteries. They have several specific advantages such as high safety, easy fabrication, low cost, high energy density, good electrochemical stability, and excellent compatibility with lithium salt. However, the typical linear PEO does not reach the production requirement because its insufficient ionic conductivity due to the high crystallinity of the ethylene oxide (EO) chains, which can restrain the ionic transition due to the stiff structure especially at low temperature. The scientists have explored different approaches to reduce the crystallinity hence to improve the ionic conductivity of PEO-based electrolytes, including: blending, modifying and making PEO derivatives etc. This review is focused on surveying the recent developments and issues about PEO-based electrolytes for lithium-ion batteries.

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Section: Silane or Siloxane Corementioning

confidence: 99%

Poly(ethylene oxide)-based electrolytes for lithium-ion batteries

2015

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“…12 An effective approach to increasing the lithium transference number is to chemically attach the anions on the polymer chains, limiting anion mobility and constructing a single ion conductor. 13,14,15,16 A good anion structure should enable the dissociation between the lithium cation and counter-ion, which could increase the mobile lithium cation concentration in the electrolyte. A salt such as TFSI has an interesting structure that can be used in the construction of single ion conductors.…”

Section: Introductionmentioning

confidence: 99%

Plasticized Polymer Composite Single-Ion Conductors for Lithium Batteries

Zhao

Asfour

et al. 2015

ACS Appl. Mater. Interfaces

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Lithium bis(trifluoromethane) sulfonamide (TFSI) is a promising electrolyte salt in lithium batteries, due to its good conductivity and high dissociation between the lithium cation and its anion. By tethering N-pentane triflouromethane sulfonamide (C5NHTf), a TFSI analogue molecule, onto the surface of silica nanoparticle as a monolayer coverage should increase the Li + transference number to unity since anions bound to particles have reduced mobilities. Silica polymer composite has better mechanical property than that of the pure PEO. Analogously trifluoromethane sulfonic aminoethylmethacrylate (TfMA), a TFSI analogue vinyl monomer was polymerized on silica nanoparticle surface as a multilayer coverage. Anchored polyelectrolytes to particle surfaces offer multiple sites for anions, and in principle, the carrier concentration would increase arbitrarily and approach the carrier concentration of the bulk polyelectrolyte. Monolayer grafted nanoparticle have a lithium content of 1.2*10 -3 g Li/g and multilayer grafted nanoparticle have a lithium content over an order higher at 2*10 -2 g Li/g. Electrolytes made from monolayer grafted particles exhibit a weak conductivity dependence on temperature, exhibiting an ionic conductivity in the range of 10 -6 S/cm when temperatures increase to 80 °C. While electrolytes made from multilayer grafted particles show a steep increase in conductivity with temperature with an ionic conductivity increase to 3*10 -5 S/cm at 80 °C, with a O/Li ratio of 32.

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“…For example, methacrylic monomers, epoxy resins, polyethers, polyesters, polysiloxane and soybean oils containing CF 3 or CF 2 groups have been synthesized, and their properties, such as glass transition temperature, thermal stabilities, water impermeability, mechanical properties, chemical resistance, surface and optical properties have been studied. [9][10][11][12][13][14][15] These polymers can be cured with ultraviolet (UV) radiation which is an environmentally friendly processing technique, which has advantages, such as room temperature operation, high efficiency, low energy consumption and low pollutions. [16][17][18][19][20] However, studies on fluorinated structures in UV-curable MMA coatings have been relatively seldom.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of fluorinated methacrylate/epoxy siloxane copolymer coatings applied on glass substrates and analysis of some physical properties

Tang

Gao

2012

Journal of Plastic Film & Sheeting

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By using glycidyl methacrylate, methacrylate and 2,2,3,4,4,4-hexafluorobutyl methacrylate as monomers, a series of binary and ternary cationic ultraviolet (UV)-curable copolymers were synthesized, and their structures were characterized. These copolymers were coated on glass substrates and cured with an epoxy siloxane under UV irradiation, and the contact angle, chemical ability, gloss, light transmittance, as well as thermal degradation on set temperature of the cured films were determined. The results indicated that the cured coatings showed more than 80% gloss and more than 85% visible light transmittance. The ternary copolymers showed relatively high stability if immersed in water and if immersed in acidic and basic solutions. The observed higher stability was considered as a result of the highly stable chemical structure of the terpolymer and of the presence of fluorinated-and siloxane-containing moieties.

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Synthesis of Comb Polysiloxane Polyelectrolytes Containing Oligoether and Perfluoroether Side Chains

Cited by 49 publications

References 49 publications

Poly(ethylene oxide)-based electrolytes for lithium-ion batteries

Poly(ethylene oxide)-based electrolytes for lithium-ion batteries

Plasticized Polymer Composite Single-Ion Conductors for Lithium Batteries

Synthesis of fluorinated methacrylate/epoxy siloxane copolymer coatings applied on glass substrates and analysis of some physical properties

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