A novel sandwiched membrane as polymer electrolyte for application in lithium-ion battery

Xiao, Qizhen; Li, Zhaohui; Gao, Deshu; Zhang, Ye

doi:10.1016/j.memsci.2008.10.019

Cited by 84 publications

(46 citation statements)

References 17 publications

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“…[8,9] Recent studies have revealed that in addition to the improvement in the ionic conductivity and mechanical strength, interfacial properties are also enhanced through dispersion of nanosized inorganic fillers in the polymer matrix. [10][11][12][13][14] [17] Among different inorganic fillers, carbon nanotubes (CNTs), owing to have properties like extremely high strength, high stiffness, and high aspect ratio, are looked upon as ideal nanofillers in the preparation of gel polymer electrolyte. The researchers have reported that CNTs may be combined with polymers to produce functional composite materials with superior properties.…”

Section: Introductionmentioning

confidence: 99%

Effect of carbon nanotube dispersion on electrochemical and mechanical characteristics of poly(methyl methacrylate)‐based gel polymer electrolytes

Sharma

Sil²,

Ray

2015

Polymer Composites

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Polymer-based electrolyte of lithium ion batteries and other devices have shortcomings of low ionic conductivity and inadequate mechanical strength. The study presents the preparation of polymethyl methacrylate (PMMA)-based three-layered nanocomposite gel polymer electrolytes (NCGPEs) having multiwalled carbon nanotubes (MWCNTs) dispersed in the middle layer of the composites and the effect of dispersoid quantities on the ionic, mechanical, and thermal characteristics of the electrolytes. The NCGPEs were synthesized by solution cast process with the various MWCNTs contents of 0.5, 1.0, 1.5, and 2.0 wt%. Morphology of the NCGPEs has been observed by scanning and transmission electron microscopes (SEMs). Interactions between the constituents of the composite and structural changes of the base polymer were investigated by Fourier transform infrared (FTIR) spectroscopy and X-ray diffraction (XRD) techniques. The mechanical strength of the NCGPEs increases considerably owing to the dispersion of MWCNTs and the highest strength was found for the dispersion of 2.0 wt% of MWCNTs. The thermal stability of the nanocomposites was investigated by thermo-gravimetric analysis (TGA). The chemical decomposition temperature of the nanocomposites increases considerably as compared to the gel polymer electrolyte. Ionic conductivity of the composite electrolyte increases with the increase in addition of MWCNTs and the maximum ionic conductivity (10 23

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Section: Introductionmentioning

confidence: 99%

Effect of carbon nanotube dispersion on electrochemical and mechanical characteristics of poly(methyl methacrylate)‐based gel polymer electrolytes

Sharma

Sil²,

Ray

2015

Polymer Composites

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“…After drying, the C/MnO y /ACNTs electrode was placed inside the cathodic half cell and covered by a GPE. The GPE was made by saturating a dried sandwiched polymer membrane (poly(vinyl difluoride) (PVDF; Kynar, reagent grade)/poly(methyl methacrylate) (PMMA; Alfa Aesar, Mw = 61 000)/PVDF, [56] dried in a vacuum at 60 8C) of 100 mm with the 1 m LiPF 6 EC/DEC (3:7 vol %) electrolyte. The cathodic half cell was taken out of the glovebox and assembled with the anodic half cell to make the electrolytic cell.…”

Section: Electrolytic Cell Studiesmentioning

confidence: 99%

Boosting Properties of 3D Binder‐Free Manganese Oxide Anodes by Preformation of a Solid Electrolyte Interphase

et al. 2015

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Huge irreversible capacity loss prevents the successful use of metal oxide anodes in Li-ion full cells. Here, we focus on the critical prelithiation step and demonstrate the challenge of electrolyte decomposition on a pristine anode in a full cell. Both an electrochemical activation process (54 h) with Li metal and a new electrolytic process (75 min) without Li metal were used to preform complete solid electrolyte interphase (SEI) layers on 3 D binder-free MnOy -based anodes. The preformed SEI layers mitigated the electrolyte decomposition effectively and widened the working voltage for the MnOy /LiMn2 O4 full cell, which resulted in a big boost of the specific energy to 300 and 200 W h kgcathode (-1) , largely improved cycling stability, and much higher specific power (4200 W h kgtotal (-1) ) compared to conventional Li-ion batteries. Detailed characterization, such as cyclic voltammetry, scanning transmission electron microscopy, and FTIR spectroscopy, gives mechanistic insight into SEI preformation. This work provides guidance for the design of anode SEI layers and enables the application of oxides for Li-ion battery full cells.

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“…where R is the gas constant, r 0 the pre-exponential index and T the testing absolute temperature [12,[18][19][20]. Therefore, the activation energy for ion transportation can be calculated from the slope of the straight line according to Eq.…”

Section: Ionic Conductivitymentioning

confidence: 99%

Non-woven fabric supported poly(acrylonitrile-vinyl acetate) gel electrolyte for lithium ion battery use

Rao

Liao

et al. 2010

J Appl Electrochem

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This paper reported on a new gel polymer electrolyte (GPE) based on polyethylene (PE) non-woven fabric supported poly(acrylonitrile-vinyl acetate) (P(ANVAc)/PE) membrane for lithium ion battery use. The preparation and performances of the P(AN-VAc)/PE membrane and its GPE based on 1 M LiPF 6 in dimethyl carbonate/diethylene carbonate/ethylene carbonate (1:1:1 in volume) were investigated with a comparison of the unsupported P(AN-VAc) membrane. It is found that the P(AN-VAc)/PE membrane shows better mechanical strength and pore structure for electrolyte uptake than the P(AN-VAc) membrane, and subsequently the GPE based on P(AN-VAc)/PE exhibits higher ionic conductivity and electrochemical stability on cathode than the GPE based on P(AN-VAc). With the support of the non-woven fabric, the ionic conductivity of the GPE at room temperature increases from 1.4 to 3.8 mS cm -1 , the oxidation decomposition potential of the GPE on a stainless steel is improved from 5.0 to 5.6 V (vs. Li/Li ? ). The mesocarbon microbeads (MCMB)/LiMn 2 O 4 battery using P(AN-VAc)/ PE as separator retains 94% of its initial discharge capacity after 100 cycles at C/2 rate, showing that the P(AN-VAc)/ PE membrane is a possible alternative to the expensive separator for current liquid lithium ion battery.

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A novel sandwiched membrane as polymer electrolyte for application in lithium-ion battery

Cited by 84 publications

References 17 publications

Effect of carbon nanotube dispersion on electrochemical and mechanical characteristics of poly(methyl methacrylate)‐based gel polymer electrolytes

Effect of carbon nanotube dispersion on electrochemical and mechanical characteristics of poly(methyl methacrylate)‐based gel polymer electrolytes

Boosting Properties of 3D Binder‐Free Manganese Oxide Anodes by Preformation of a Solid Electrolyte Interphase

Non-woven fabric supported poly(acrylonitrile-vinyl acetate) gel electrolyte for lithium ion battery use

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