Investigation of the stability of chlorinated PVC-based polymer electrolytes for lithium batteries

Shembel, E. M.; Chervakov, O. V.; Neduzhko, L. I.; Maksyuta, Irina M; Polischyk, Yu.V; Reisner, David; Novák, Petr; Meshri, Dayal T.

doi:10.1016/s0378-7753(01)00675-9

Cited by 27 publications

(7 citation statements)

References 3 publications

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“…Furthermore, it is known that additives such as Li + , Fe 2+ , Fe 3+ ions are known to be active dechlorination agents for PVC and its derivatives. In some cases, anions such as ClO

_{4}^{−}

, I − , and SO 4 − can accelerate the thermal decomposition of PVC including drying process when solid polymer electrolyte is produced from solutions 31. Eventually, dechlorination can promote the crosslinking between the polymer segments that lead to increase in T g when more salts were doped in the polymer electrolyte 30…”

Section: Resultsmentioning

confidence: 99%

LiClO₄ salt concentration effect on the properties of PVC‐modified low molecular weight LENR50‐based solid polymer electrolyte

Rahman

Ahmad

Lee

et al. 2011

J of Applied Polymer Sci

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A work was carried out on a solid polymeric electrolyte system comprising blends of poly (vinyl chloride) and liquid 50% epoxidized natural rubber (LENR50) as a polymer host with LiClO 4 as a salt and prepared by solution casting technique. In this paper, the main study was the effect of LiClO 4 salt concentration on the electrolyte properties. The effect of the salt on the electrolyte properties was characterized and analyzed with impedance spectroscopy (EIS), X-ray diffraction (XRD), differential scanning calorimeter (DSC), and scanning electron microscopy (SEM). The EIS result showed that highest ionic conductivity was obtained at 30 wt % salt with a value of 2.3 Â 10 À8 S cm À1 . The XRD results revealed that the LiClO 4 salt was fully complexed within the polymer host as no sharp peaks were observed. However, above 30 wt % of salt, some sharp peaks were observed. This phenomenon was caused by the association of ions. Meanwhile, DSC analysis showed that T g increased as the salt content increased. This implied that LiClO 4 salt had interaction with polymer host by forming coordination bond. The morphologies' studies showed that good homogeneity and compatibility of the electrolyte were achieved. Upon the addition of the salt, formation of micropores occurred. It was noted that micropores which aid in mobility of ions in the electrolyte system has increased the ionic conductivity.

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“…Furthermore, it is known that additives such as Li + , Fe 2+ , Fe 3+ ions are known to be active dechlorination agents for PVC and its derivatives. In some cases, anions such as ClO

_{4}^{−}

Section: Resultsmentioning

confidence: 99%

LiClO₄ salt concentration effect on the properties of PVC‐modified low molecular weight LENR50‐based solid polymer electrolyte

Rahman

Ahmad

Lee

et al. 2011

J of Applied Polymer Sci

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“…In some cases, anions such as ClO 4 − , I − . and SO 4 − can accelerate the thermal decomposition of PVC including drying process when solid polymer electrolyte is produced from solutions [27]. Eventually, dechlorination can also promote the cross-linking between the polymer segments that leads to the increase in T g when more salts were doped in the polymer electrolyte [23].…”

Section: Thermal Analysismentioning

confidence: 99%

Temperature dependence of the conductivity of plasticized poly(vinyl chloride)-low molecular weight liquid 50% epoxidized natural rubber solid polymer electrolyte

Lee

Afiqah

Ahmad

et al. 2012

J Solid State Electrochem

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Characterizations were carried out to study on a new plasticized solid polymer electrolyte that was composed of blends of poly(vinyl chloride) (PVC), liquid 50% epoxidized natural rubber (LENR50), ethylene carbonate, and polypropylene carbonate. This freestanding solid polymer electrolyte (SPE) was successfully prepared by solution casting technique. Further analysis and characterizations were carried out by using scanning electron microscopy (SEM), X-ray diffraction, differential scanning calorimeter (DSC), Fourier transform infrared (ATR-FTIR), and impedance spectroscopy (EIS). The SEM results show that the morphologies of SPEs are compatible with good homogeneity. No agglomeration was observed. However, upon addition of salt, formation of micropores occurred. It is worth to note that micropores improve the mobility of ions in the SPE system, thus increased the ionic conductivity whereas the crystallinity analysis for SPEs indicates that the LiClO 4 salt is well complexed in the plasticized PVC-LENR50 as no sharp crystallinity peak was observed for 5-15% wt. LiClO 4 . This implies that LiClO 4 salt interacts with polymer host as more bonds are form via coordination bonding. In DSC study, it is found that the glass temperature (T g ) increased with the concentration of LiClO 4 . The lowest T g was obtained at 41.6°C when incorporated with 15% wt. LiClO 4 . The features of complexation in the electrolyte matrix were studied using ATR-FTIR at the peaks of C0O, C-O-C, and C-Cl. In EIS analysis, the highest ionic conductivity obtained was 1.20× 10 −3 S cm −1 at 15% wt. LiClO 4 at 353 K.

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“…The mentioned PE are formed as the films from the solutions of electrolyte components in tetrahydrofuran (THF). The investigations carried out by us have shown that after formation and drying of the polymer electrolyte films, there is 7-8% THF in their composition, which does not disappear even with long-term drying in a vacuum at 45°C [7].…”

Section: Introductionmentioning

confidence: 97%

Reactivity of natural and synthesized FeS2 relative to the components of polymer electrolytes

Shembel

Polischuk

Chervakov

et al. 2006

Ionics

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Iron disulfide reactivity relative to the components of composite polymer electrolytes based on chlorinated polyvinylchloride has been studied by taking differential infrared (IR) spectra. It has been shown that iron-containing admixtures on iron disulfide surface can initiate the decomposition processes of polymer systems. Possibility of diffusion to the volume of liquid electrolyte of surface iron-comprising compounds of different composition-has been shown. In the presence of lithium salts, these admixtures initiate the destruction processes of plasticizing additives and polymer matrix. The disclosed effects of interaction enable optimization of polymer electrolyte composition for the further use in the power source of Li-FeS 2 system and to develop a complex of procedures connected with the preliminary treatment (thermal or chemical) of pyrite aimed at the modification of its surface properties.

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Investigation of the stability of chlorinated PVC-based polymer electrolytes for lithium batteries

Cited by 27 publications

References 3 publications

LiClO₄ salt concentration effect on the properties of PVC‐modified low molecular weight LENR50‐based solid polymer electrolyte

LiClO₄ salt concentration effect on the properties of PVC‐modified low molecular weight LENR50‐based solid polymer electrolyte

Temperature dependence of the conductivity of plasticized poly(vinyl chloride)-low molecular weight liquid 50% epoxidized natural rubber solid polymer electrolyte

Reactivity of natural and synthesized FeS2 relative to the components of polymer electrolytes

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Investigation of the stability of chlorinated PVC-based polymer electrolytes for lithium batteries

Cited by 27 publications

References 3 publications

LiClO4 salt concentration effect on the properties of PVC‐modified low molecular weight LENR50‐based solid polymer electrolyte

LiClO4 salt concentration effect on the properties of PVC‐modified low molecular weight LENR50‐based solid polymer electrolyte

Temperature dependence of the conductivity of plasticized poly(vinyl chloride)-low molecular weight liquid 50% epoxidized natural rubber solid polymer electrolyte

Reactivity of natural and synthesized FeS2 relative to the components of polymer electrolytes

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LiClO₄ salt concentration effect on the properties of PVC‐modified low molecular weight LENR50‐based solid polymer electrolyte

LiClO₄ salt concentration effect on the properties of PVC‐modified low molecular weight LENR50‐based solid polymer electrolyte