Blending poly(methyl methacrylate) and poly(styrene‐<i>co</i>‐acrylonitrile) as composite polymer electrolyte

Digar, Mohanlal; Hung, Shiue Liang; Wen, Ten Chin

doi:10.1002/app.1219

Cited by 15 publications

(11 citation statements)

References 24 publications

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“…The onset of current flow at 4.9 V is associated with the decomposition of the electrolyte. From this result, the semi‐IPN gel electrolyte is thought to be acceptable for high voltage cathode materials, such as LiCoO 2 , LiNiO 2 , and LiMn 2 O 4 14…”

Section: Resultsmentioning

confidence: 99%

Gel polymer electrolyte with semi‐IPN fabric for polymer lithium‐ion battery

Yanming

Wang

2011

J of Applied Polymer Sci

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A new type of semi-IPN gel electrolyte was prepared by thermal polymerization in this article. At first, the crosslinkable PEG200 (MXPEG) was prepared by condensation reaction, then the crosslinkable components were blent with PMMA and heated under vacuum to form polymer blends with semi-IPN fabric. Differential scanning calorimetry and X-ray diffraction spectroscopy were used to investigate the thermal properties and crystalline/amorphous structure of the prepared polymer blends. With semi-IPN fabric, they present amorphous absolutely. For semi-IPN gel electrolyte, the mechanical and the electrochemical properties are varied with the quantity of absorbed liquid electrolyte. Ion-conductivity behavior for semi-IPN gel electrolyte measured by means of AC impedance spectrum showed that the best data was 1.62 Â 10 À3 S cm À1 at room temperature, and Arrhenius-type relationship was obeyed in the temperature dependence of ionic conductivity. In addition, the electrochemical stability window of the semi-IPN gel electrolyte was 4.6 V. All the properties showed that the prepared semi-IPN gel electrolyte was expected to have applications of electrolyte for lithium-ion polymer secondary batteries.

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Section: Resultsmentioning

confidence: 99%

Gel polymer electrolyte with semi‐IPN fabric for polymer lithium‐ion battery

Yanming

Wang

2011

J of Applied Polymer Sci

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“…On the other hand, Lewis acid-base effect, which comes from the interaction between -OLi groups on the surface of SiO 2 (Li ? ) and polar CF 2 groups of polymer chains, can weaken the interaction the interaction between Li ? ions and anions and facilitating their migration [24,25]. However excess silica may destroy the mechanical properties of the composite gel polymer electrolyte.…”

Section: Ionic Conductivity Measurementmentioning

confidence: 99%

“…(Table 3) 3.9 Electrochemistry Stability Measurements For a lithium-ion polymer battery, the cell potential can approach as high as 4.5 V versus Li/Li ? , implying that the composite polymer electrolyte should be electrochemically stable up to at least 4.5 V [25]. To ascertain the electrochemical stability of the CMGPE, linear sweep voltammogram of the laminated three electrode cells was performed at ambient temperature.…”

Section: Ionic Conductivity Measurementmentioning

confidence: 99%

Preparation and Characterization of Composite Microporous Gel Polymer Electrolytes Containing SiO2(Li+)

Tang

2013

J Inorg Organomet Polym

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In this paper, the single ionic conductor SiO 2 (Li ? ) was first synthesized from Tetraethylorthosilicate and c-(2,3-epoxypropoxy) propyltrimethoxysilane (KH560) by sol-gel hydrolysis and then neutralized by lithium hydroxide in methanol. The poly(vinylidene fluoride) based composite microporous gel polymer electrolytes (CMGPEs) doped with SiO 2 (Li ? ) was prepared by phase inversion method and the desirable CMGPEs was obtained after being activated in liquid electrolyte. The physicochemical properties of the CMGPEs were characterized by FT-IR, DSC, XRD, TG, stress-strain response and electrochemical measurements. It was found that with the addition of SiO 2 (Li ? ), the degree of crystallization of microporous polymer membrane was decreased while its porosity increased, which could promote the absorption and gelation of liquid electrolyte. In addition, due to vast amount of Li ? ions in the SiO 2 (Li ? ), it would promote ionic conductivity at room temperature for the CMGPEs. When the content of SiO 2 (Li ? ) reached 5 %wt, the ionic conductivity of the CMGPEs could reach 10 -2 S/cm order of magnitude at room temperature and the reciprocal temperature dependence of ionic conductivity of as-prepared CMGPEs follow arrhenius equation, in addition, its electrochemical stability window could reach 5.2 V.

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“…These materials display a number of advantages compared to simple salt-in-polymer electrolytes and are believed to be promising materials for application in secondary lithium batteries. [1][2][3][4][5][6][7][8][9][10][11][12][13][14] Advantages include the suppression of PEO crystallization and enhancement of the mechanical properties. In many cases, composite electrolytes also show higher conductivity and Li transference numbers, which are crucial for successful application in Li batteries.…”

Section: Introductionmentioning

confidence: 99%

Design of organic–inorganic solid polymer electrolytes: synthesis, structure, and properties

et al. 2004

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This paper reports the synthesis, structure, and properties of novel hybrid solid polymer electrolytes (SPEs) consisting of organically modified aluminosilica (OM-AlSi), formed within a poly(ethylene oxide)-in-salt (Li triflate) phase. To alter the structure and properties of these polymer electrolytes, we used functionalized silanes containing poly(ethylene oxide) (PEO) tails or CN groups. The SPEs described here were studied using differential scanning calorimetry, Raman spectroscopy, X-ray powder diffraction, and AC impedance spectroscopy. The size of the OM-AlSi domains was estimated using transmission electron microscopy and comparing the sizes of AlSi nanoparticles, obtained via calcination of the hybrid SPE. The conductivity enhancement, caused by incorporation of PEO tails or CN groups in the hybrid materials based on 600 Da poly(ethylene glycol), can be ascribed to a decrease of OM-AlSi domain size accompanied by an increase of the OM-AlSi/PEO 1 LiTf interface. For the CN modifier, increase of this interface increases the amount of CN groups exposed to PEO 1 LiTf phase, thus increasing the effective dielectric constants of the materials and their conductivity, although this dependence is not linear. In the case of the PEO modifier, different effects are observed for 600 Da PEG and 100 kDa PEO. For 100 kDa PEO, incorporation of the silane with a PEO tail caused a decrease of conductivity. Here, AlSi particle size remains basically unchanged with addition of silanemodifier, and the decrease of conductivity can be attributed to formation of a crystalline phase at the OM-AlSi/ PEO 1 LiTf interface.

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Blending poly(methyl methacrylate) and poly(styrene‐co‐acrylonitrile) as composite polymer electrolyte

Cited by 15 publications

References 24 publications

Gel polymer electrolyte with semi‐IPN fabric for polymer lithium‐ion battery

Gel polymer electrolyte with semi‐IPN fabric for polymer lithium‐ion battery

Preparation and Characterization of Composite Microporous Gel Polymer Electrolytes Containing SiO2(Li+)

Design of organic–inorganic solid polymer electrolytes: synthesis, structure, and properties

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