Studies on PVdF-based gel polymer electrolytes

Periasamy, P.; Tatsumi, Kuniaki; Shikano, Masahiro; Fujieda, Takuya; Saito, Yuria; Sakai, Tetsuo; Mizuhata, Minoru; Kajinami, Akihiko; Deki, Shigehito

doi:10.1016/s0378-7753(99)00348-1

Cited by 80 publications

(39 citation statements)

References 7 publications

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“…This is possibly a result of the strong interaction of the polymer chains with the diluting solvent and lithium salts, which results in a gel polymer electrolyte of reduced crystallinity. Similar results have been reported for a PVDF‐based gel polymer electrolyte prepared by solvent casting a mixture of PVDF with LiBF 4 in EC/PC35 and another polymer electrolyte prepared by the complexation of PVDF mixed with LiPH 6 in EC/PC 36…”

Section: Resultssupporting

confidence: 84%

Single Radiation‐Induced Grafting Method for the Preparation of Two Proton‐ and Lithium Ion‐Conducting Membranes

Nasef

Saidi

2006

Macro Materials & Eng

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Summary: Two distinct types of polymer electrolyte membranes for conducting protons and lithium ions have been prepared by a radiation‐induced grafting method. The polymer electrolyte precursor (PVDF‐g‐PS) is obtained by the simultaneous grafting of styrene onto poly(vinylidene fluoride) (PVDF) followed by one of two specific treatments. This includes sulfonation with a chlorosulfonic acid/dichloromethane mixture to obtain proton (H+)‐conducting membranes, or activation with LiPF6/EC/DC liquid electrolyte to obtain lithium ion (Li+)‐conducting membranes. The chemical structure of the obtained electrolyte membranes is verified by FT‐IR spectroscopy. Differential scanning calorimetry is used to examine the changes in the crystallinity and the thermal properties of both electrolyte membranes during the preparation process. The thermal stability of both electrolyte membranes is also evaluated using thermal gravimetrical analysis. The obtained polymer electrolyte membranes achieve superior conductivity values: 1.61 × 10−3 S · cm−1 for Li+ and 5.95 × 10−2 S · cm−1 for H+ at room temperature at a polystyrene content of 50%. The results of this work suggest that high quality H+‐ and Li+‐conducting membranes can be obtained using a single radiation‐induced grafting method.Schematic representation of the single root for preparation of Li+‐ and H+‐conducting membranes started by radiation‐induced grafting of styrene onto a PVDF film followed by chemical treatment.magnified imageSchematic representation of the single root for preparation of Li+‐ and H+‐conducting membranes started by radiation‐induced grafting of styrene onto a PVDF film followed by chemical treatment.

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Section: Resultssupporting

confidence: 84%

Single Radiation‐Induced Grafting Method for the Preparation of Two Proton‐ and Lithium Ion‐Conducting Membranes

Nasef

Saidi

2006

Macro Materials & Eng

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“…Various polymers such as PEO [23][24][25][26][27][28][29][30][31], homo-and co-polymers of poly(vinylidene fluoride) (PVdF) [32][33][34][35][36][37] and poly(ethylene glycol) dimethyl ether [38] have been used to prepare polymer electrolytes with ionic liquids and have been studied over the last few years. Among them PVdF and its copolimers are important due to their high strength and good stability [39][40][41]. PVdF based polymer electrolytes are highly anodically stable due to the presence of a strong electron-withdrawing functional group (-C-F) [9].…”

Section: Introductionmentioning

confidence: 99%

Application of quaternary polymer electrolyte based on ionic liquid in LiFePO4/Li, Li4Ti5O12/Li and LiFePO4/Li4Ti5O12 batteries

Swiderska‐Mocek

2014

Electrochimica Acta

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“…There, this problem was solved for the example of the phase incompatible mixture of PVDF and polythiophene. Materials based on PVDF found unexpected application in the general problem of the use of gel polymer electrolytes in lithium power supplies [14,15].…”

Section: Introductionmentioning

confidence: 99%

Polarization of block textured films of ferroelectric copolymers of vinylidene fluoride with tetrafluoroethylene in an external field

et al. 2014

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The polarization of oriented films of the ferroelectric copolymer of vinylidene fluoride and tet rafluoroethylene in a sinusoidal electric field is studied. In low fields, the copolymer behaves as a linear dielectric whose permittivity nonlinearly increases with the amplitude of the alternating field. This behavior is related to the preferential orientation of the dipole moment of the chain along the normal to the surface and to the monocrystal structure formation. In higher fields, the hysteresis behaves formally coincidently with the behavior of an antiferroelectric. The important role of through stressed chains in the amorphous phase in the initiation of domains of a new direction in polar crystals is observed. Increased adsorption of water molecules on the surface of a polarized film is found and is attributed to the formation of the final den sity of the stable polarization charge on it.

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Studies on PVdF-based gel polymer electrolytes

Cited by 80 publications

References 7 publications

Single Radiation‐Induced Grafting Method for the Preparation of Two Proton‐ and Lithium Ion‐Conducting Membranes

Single Radiation‐Induced Grafting Method for the Preparation of Two Proton‐ and Lithium Ion‐Conducting Membranes

Application of quaternary polymer electrolyte based on ionic liquid in LiFePO4/Li, Li4Ti5O12/Li and LiFePO4/Li4Ti5O12 batteries

Polarization of block textured films of ferroelectric copolymers of vinylidene fluoride with tetrafluoroethylene in an external field

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