Performance limitations of polymer electrolytes based on ethylene oxide polymers

Buriez, Olivier; Han, Yong Bong; Hou, Jingyao; Kerr, John B.; Qiao, Jun; Sloop, Steven E; Tian, Mengkui; Wang, Shanger

doi:10.1016/s0378-7753(00)00423-7

Cited by 88 publications

(93 citation statements)

References 28 publications

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“…This type of PEs was previously reported by Smyrl and coworkers, who utilized polyelectrolytes and a glyme-Li salt equimolar complex [27]. Similar to other PEs, the structure of the polymer backbone affects the ionic transport properties due to the varying stiffness and polarizability [28]. Here, three different host polymers, namely PEO, poly(methyl methacrylate) (PMMA), and poly(butyl acrylate) (PBA), were combined with [Li(G4) 1 ][TFSA] to fabricate novel polymer-in-salt-type electrolytes.…”

Section: Introductionsupporting

confidence: 53%

Li+ Ion Transport in Polymer Electrolytes Based on a Glyme-Li Salt Solvate Ionic Liquid

Kido

Ueno

Iwata

et al. 2015

Electrochimica Acta

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Keywords: solvate ionic liquid polymer electrolyte polymer-in-salt ionicity glyme A B S T R A C T Polymer electrolytes (PEs) have served as the focus of intensive research as new ion-conducting materials, especially for lithium battery applications. A new strategy to develop fast lithium-conducting PEs is reported here. The thermal, ionic transport, and electrochemical properties of polymer solutions in a glyme-Li salt solvate ionic liquid, [Li(G4) 1 ][TFSA], composed of an equimolar mixture of lithium bis (trifluoromethanesulfonyl) amide (Li[TFSA]) and tetraglyme (G4), were characterized. Poly(ethylene oxide) (PEO), poly(methyl methacrylate) (PMMA), and poly(butyl acrylate) (PBA) were combined with [Li(G4) 1 ][TFSA] in order to explore the effects of polymer structure on the properties. The self-diffusion coefficient ratio of the glyme and Li + ions (D G /D Li ) was investigated to evaluate the stability of the complex (solvate) cations. The D G /D Li values suggested that the [Li(G4) 1 ] + complex cations underwent a ligand exchange reaction between G4 and PEO in the PEO-based solution, whereas the cations remained stable (D G /D Li = 1) in the PMMA-and PBA-based solutions. The robustness of the [Li(G4) 1 ] + complex cations in the PMMA-and PBA-based solutions was reflected in high weight-loss temperature, greater Li transference number, and high oxidative stability.Owing to the lower glass transition temperature and low affinity towards Li + ions, the PBA-based solutions yielded superior lithium transport properties (ionic conductivity of 10 À4 $10 À3 Scm À1 and Li transference number as high as 0.5) among the investigated polymer solutions.

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Section: Introductionsupporting

confidence: 53%

Li+ Ion Transport in Polymer Electrolytes Based on a Glyme-Li Salt Solvate Ionic Liquid

Kido

Ueno

Iwata

et al. 2015

Electrochimica Acta

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“…For the LP30-based cells, only room-temperature data were recorded. In the case of the GCE-based cells, performance at ∼60 • C is of particular interest since this temperature is in the range of the melting point of PEO [43,53,54]. As indicated in Fig.…”

Section: Resultsmentioning

confidence: 99%

Graft copolymer-based lithium-ion battery for high-temperature operation

Osswald

Daniel

et al. 2011

Journal of Power Sources

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“…16 However, the ionic conductivity was slightly lower than that of cross-linked polysiloxane reported by Zhang et al, 18 The lower conductivity may be attributed to the difference of lithium salt since the polymer electrolyte complexed by LiN(CF 3 SO 2 ) 2 which was used by Zhang et al, usually gave higher conductivity compared to that complexed by LiCF 3 SO 3 used in this study. 22 As the content of the PEGDME increased, the conductivity gradually increased but the T g of the polymer decreased. The similar increase of the conductivity has been reported for the PVDF-HFP 23 and cross-linked polymer electrolyte 7,16 plasticized with PEGDME.…”

Section: Resultsmentioning

confidence: 98%

Effect of poly(ethylene glycol) dimethyl ether plasticizer on ionic conductivity of cross-linked poly[siloxane-g-oligo(ethylene oxide)] solid polymer electrolytes

et al. 2004

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Cross-linked network solid polymer electrolytes were prepared by means of in situ hydrosilylation between poly[hydromethylslioxane-g-oligo(ethylene oxide)] and diallyl or triallyl group-containing poly(ethylene glycols). The conductivities of the resulting polymer electrolytes were greatly enhanced upon the addition of poly(ethylene glycol) dimethyl ether (PEGDME) as an ion-conducting plasticizer. Conductivities of the cross-linked polymer electrolytes were more dependent on the molecular weight of PEGDME than on the cross-linkers. The maximum conductivity was found to be 5.6 Ý10 -4 S/cm at 30 o C for the sample containing 75 wt% of PEGDME (M n = 400). These electrolytes exhibited electrochemical stability up to 4.5 V against the lithium reference electrode. We observed reversible electrochemical plating/stripping of lithium on the nickel electrode.

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Performance limitations of polymer electrolytes based on ethylene oxide polymers

Cited by 88 publications

References 28 publications

Li+ Ion Transport in Polymer Electrolytes Based on a Glyme-Li Salt Solvate Ionic Liquid

Li+ Ion Transport in Polymer Electrolytes Based on a Glyme-Li Salt Solvate Ionic Liquid

Graft copolymer-based lithium-ion battery for high-temperature operation

Effect of poly(ethylene glycol) dimethyl ether plasticizer on ionic conductivity of cross-linked poly[siloxane-g-oligo(ethylene oxide)] solid polymer electrolytes

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