Superior Ionic Transferring Polymer with Silicon Dioxide Composite Membrane via Phase Inversion Method Designed for High Performance Sodium-Ion Battery

Ponnaiah Arjunan,Karuppiah Diwakar,Marimuthu Sivakumar,Rengapillai Subadevi,Wei-Ren Liu,Chia-Hung Huang,Mathiyalagan Kouthaman

doi:10.3390/polym12020405

Ponnaiah Arjunan, Karuppiah Diwakar + Show 5 more

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https://doi.org/10.3390/polym12020405

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Superior sodium-ion-conducting polymer poly(vinyledene fluoride)–silicon dioxide (PVdF-SiO2) composite separator membrane was prepared via simple phase inversion method, which is a suitable alternative conventional polypropylene membrane. Basically, PVdF is the promising for use as high porous polymer electrolyte membrane due to its high dielectric constant (ε = 8.4). In this work, we prepared a composite membrane using PVdF-SiO2 via phase inversion method. This work was systematically studied towards the morphology, porosity, and electrochemical properties of as prepared membrane. The electrolyte uptake capability of separator membrane tested with 1 M NaPF6 electrolyte solution and temperature-dependent ionic conduction test were performed at various temperatures. This membrane exhibits higher ionic conductivity of 4.7 × 10−2 S cm−1 at room temperature. The physical properties were analyzed by X-ray diffraction, FT-IR, and FE-SEM micrographs analyses. The electrochemical performances with impedance analysis carried for prepared membrane with the as-prepared sodium P2-type cathode material. The material showed an initial discharge capacity of 178 mAh g−1 at 0.1 C between 2 and 4 V with 98% columbic efficiency and 81% capacity retention after 50 cycles upon using the as-prepared PVdF-SiO2 composite separator membrane.

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Worldwide, the research on secondary batteries has gained much interest due to the increasing demand of batteries for powering electronic goods and transport systems (HEV)
The glass fiber type separators are used for sodium batteries due to their high porosity and good ionic conductivity; the leakage of electrolyte makes them unsuitable for practical application where they can cause flammability and explosion of risk associated [10,11]
Attributed to the membrane composed of Poly(vinylidene fluoride) (PVdF)-SiO2 at 2θ range of 18.3 and 19.8, 26.6 attributed to the α(010), α(010), α(110), α(110), and which α(021),can which can reveal pure

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The research on secondary batteries has gained much interest due to the increasing demand of batteries for powering electronic goods and transport systems (HEV). The performance of a battery is based on their electrodes, electrolyte, and ionic conduction properties of the membranes. In all types of solid-state battery systems, the parting of electrodes is provided by the ion-conducting polymers, glasses, and porous crystalline ceramics materials. These membranes are present in lithium ion battery prototypes, which have good cyclability, performance, and long life [9]. The glass fiber type separators are used for sodium batteries due to their high porosity and good ionic conductivity; the leakage of electrolyte makes them unsuitable for practical application where they can cause flammability and explosion of risk associated [10,11]

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