Ionic conductivity of electrolytes formed from PEO-LiCF3SO3 complex low molecular weight poly(ethylene glycol)

Itô, Yukio; Kanehori, Keiichi; Miyauchi, Katsuki; Kudo, Tetsuichi

doi:10.1007/bf01132415

Cited by 85 publications

(44 citation statements)

References 14 publications

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“…This indicates that addition of the low molecular weight PEG increases ionic conductivity of the polymer electrolyte which was also reported in. 31 Secondly, addition of Li salts (such as LiI or LiCF 3 SO 3 ) into the polymer electrolytes increase dramatically the electrolyte ionic conductivity. Addition of the low molecular weight PEG further increases the ionic conductivity, however it has a much weaker influence on the conductivity when compared to the prior case without Li salts.…”

Section: Effects Of Additives On the Properties Of Polymer Electrolyte-mentioning

confidence: 99%

Flexible, Solid Electrolyte-Based Lithium Battery Composed of LiFePO₄Cathode and Li₄Ti₅O₁₂Anode for Applications in Smart Textiles

Liu¹,

Gorgutsa²,

Santato³

et al. 2012

J. Electrochem. Soc.

123

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Here we report fabrication of flexible and stretchable battery composed of strain free LiFePO 4 cathode, Li 4 Ti 5 O 12 anode and a solid poly ethylene oxide (PEO) electrolyte as a separator layer. The battery is developed in a view of smart textile applications. Featuring solid thermoplastic electrolyte as a key enabling element this battery is potentially extrudable or drawable into fibers or thin stripes which are directly compatible with the weaving process used in smart textile fabrication. The paper first details the choice of materials, fabrication and characterisation of electrodes and a separator layer. Then the battery is assembled and characterised, and finally, a large battery sample made of several long strips is woven into a textile, connectorized with conductive threads, and characterised. Two practical aspects of battery design are investigated in details: first is making composites of cathode/anode material with optimized ratio of conducting carbon and polymer binder material, and second is battery performance including cycling, reversibility, and compatibility of the cathode/anode materials. © 2012 The Electrochemical Society. [DOI: 10.1149/2.020204jes] All rights reserved.Manuscript submitted September 22, 2011; revised manuscript received December 6, 2011. Published January 19, 2012 With the rapid development of micro and nanotechnologies and driven by the need to increase the value of conventional textile products, fundamental and applied research into smart textiles has recently flourished. Generally speaking, textiles are defined as "smart" if they can respond to the environmental stimulus, such as mechanical, thermal, chemical, electrical, and magnetic. Many applications of "smart" textiles stem from the combination of textiles and electronics (e-textiles). Most of the "smart" functionalities in the early prototypes of e-textiles were enabled by integrating conventional rigid electronic devices into a textile matrix. The fundamental incompatibility of the rigid electronic components and a soft textile matrix create a significant barrier for spreading of this technology into wearables. This problem motivated many recent efforts into the development of soft electronics for truly wearable smart textile. This implies that the electronic device must be energy efficient to limit the size of the battery used to power it. Needless to say that to drive all the electronics in a smart textile one needs an efficient, lightweight and flexible battery source. Ideally, such a source will be directly in the form of a fiber that can be naturally integrated into smart textile during weaving.Broadly speaking, the advancements in flexible batteries have been in the following categories: (a) flexible organic conducting polymers, 1-4 (b) bendable fuel cells, 5 (c) polymer solar cells 6-8 and (d) flexible lithium polymer batteries. [9][10][11][12] Recently, a rechargeable textile battery was created by Bhattacharya et al. 13 It was fabricated on a textile substrate by applying a conductive polymeric coating dir...

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Section: Effects Of Additives On the Properties Of Polymer Electrolyte-mentioning

confidence: 99%

Flexible, Solid Electrolyte-Based Lithium Battery Composed of LiFePO₄Cathode and Li₄Ti₅O₁₂Anode for Applications in Smart Textiles

Liu¹,

Gorgutsa²,

Santato³

et al. 2012

J. Electrochem. Soc.

123

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“…This category of GPE is characterized by a higher ambient ionic conductivity but poorer mechanical property, and it is usually obtained by incorporating a larger quantity of liquid plasticizer and/or solvent(s) to a polymer matrix that is capable of forming a stable gel. 4 To date, several types of GPEs have been developed and characterized, such as those based on poly(ethylene oxide) (PEO), 5 poly(acrylonitrile) (PAN), 6,7 poly(methyl methacrylate) (PMMA), 8,9 poly(vinyl chloride) (PVC), 10 and poly(vinylidene fluoride) (PVdF). 11,12 The use of PMMA as a GPE was previously reported by Iijima et al 8 and Bohnke et al 9 The GPE exhibit homogeneous and transparent, and the conductivity reached the order of 10 À3 S cm…”

Section: Introductionmentioning

confidence: 99%

Dual‐phase polymer electrolytes based on blending poly(MMA‐g‐NBR) and PMMA

Yang

Yuan

et al. 2007

J of Applied Polymer Sci

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A new type dual-phase polymer electrolyte (DPE) based on poly(MMA-g-NBR) and poly(methyl methacrylate) (PMMA) was prepared by film-casting method. In the DPE, PMMA phase is selectively impregnated with the lithium salt solution, forming an ion-conducting network, while poly(MMA-g-NBR) phase maintains mechanical strength in the system. With grafting effect, the compatibility of two phases (PMMA/poly(MMA-g-NBR)) can be enhanced obviously. The chemical and physical characteristics, morphology and ionic conductivity behavior of DPEs, and their interfacial stability between lithium metal electrode were characterized by using of FTIR, 1 HMNR, DSC, SEM, optical microscopic images, AC impedance, and linear sweep voltammetry. A new type DPE with good mechanics and high electrochemistry properties is obtained at an optimum proportion of two blending polymers.

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“…In the last few years considerable efforts have been devoted to the development of amorphous polymeric materials, with high electrical conductivity at room temperature as well as good mechanical and thermal properties. There has been a number of different approaches to reduce the crystallinity while maintaining the high segmental mobility believed to be of central importance to the mechanism of conduction including: formation of cross linked networks, block or comb branch copolymers, plastization and radiation cross linking [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Broad band dielectric behaviour of plasticized PEO-based solid polymer electrolytes

Bandara

Dissanayake

Furlani

et al. 2000

Ionics

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Abstract. The conductivity and dielectric response of poly(ethylene oxide) (PEt) based plasticized polymer electrolyte systems were studied in the broad frequency range from 5 Hz to 1.8 GHz and in the temperature range from 248 K to 353 K. Propylene carbonate (PC) and ethylene carbonate (EC) were used as conventional plasticizers while poly(perfluorinated ethylene methylene oxide) (M03) was used as a new type of plasticizer. PEO-LiN(CF3SO2) 2 plasticized with M03 shows high enough conductivity values to be used as electrolyte in rechargeable lithium polymer batteries.At high frequency a dielectric relaxation is observed for pure PEt as well as for the salt containing systems in the GHz region that is assumed to be due to segmental motion of the polymer chains. In the salt containing systems, this relaxation is shifted to lower frequencies relative to that of pure PEt, this is attributed to transient cross-linking. However, at lower frequencies another dielectric response peak was detected in all samples containing salts. The effect of the plasticizer on this relaxation is complex.

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Ionic conductivity of electrolytes formed from PEO-LiCF3SO3 complex low molecular weight poly(ethylene glycol)

Cited by 85 publications

References 14 publications

Flexible, Solid Electrolyte-Based Lithium Battery Composed of LiFePO₄Cathode and Li₄Ti₅O₁₂Anode for Applications in Smart Textiles

Flexible, Solid Electrolyte-Based Lithium Battery Composed of LiFePO₄Cathode and Li₄Ti₅O₁₂Anode for Applications in Smart Textiles

Dual‐phase polymer electrolytes based on blending poly(MMA‐g‐NBR) and PMMA

Broad band dielectric behaviour of plasticized PEO-based solid polymer electrolytes

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Ionic conductivity of electrolytes formed from PEO-LiCF3SO3 complex low molecular weight poly(ethylene glycol)

Cited by 85 publications

References 14 publications

Flexible, Solid Electrolyte-Based Lithium Battery Composed of LiFePO4Cathode and Li4Ti5O12Anode for Applications in Smart Textiles

Flexible, Solid Electrolyte-Based Lithium Battery Composed of LiFePO4Cathode and Li4Ti5O12Anode for Applications in Smart Textiles

Dual‐phase polymer electrolytes based on blending poly(MMA‐g‐NBR) and PMMA

Broad band dielectric behaviour of plasticized PEO-based solid polymer electrolytes

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Product

Resources

About

Flexible, Solid Electrolyte-Based Lithium Battery Composed of LiFePO₄Cathode and Li₄Ti₅O₁₂Anode for Applications in Smart Textiles

Flexible, Solid Electrolyte-Based Lithium Battery Composed of LiFePO₄Cathode and Li₄Ti₅O₁₂Anode for Applications in Smart Textiles