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Open AccessArticle

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

1
Department of Physics, #120, Energy Materials Lab, Science Block, Alagappa University, Karaikudi 630 003, Tamil Nadu, India
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Department of Chemical Engineering, R&D Center for Membrane Technology, Research Center for Circular Economy, Chung-Yuan Christian University, Chung-Li 32023, Taiwan
3
Development Centre, Metal Industries Research, Kaohsiung 81160, Taiwan
*
Authors to whom correspondence should be addressed.
Polymers 2020, 12(2), 405; https://doi.org/10.3390/polym12020405
Received: 7 January 2020 / Revised: 5 February 2020 / Accepted: 6 February 2020 / Published: 11 February 2020
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 ( = 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.
Keywords: PVdF-SiO2 membrane; phase inversion method; superior ionic conductivity; high capacity delivery PVdF-SiO2 membrane; phase inversion method; superior ionic conductivity; high capacity delivery
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MDPI and ACS Style

Arjunan, P.; Kouthaman, M.; Subadevi, R.; Diwakar, K.; Liu, W.-R.; Huang, C.-H.; Sivakumar, M. Superior Ionic Transferring Polymer with Silicon Dioxide Composite Membrane via Phase Inversion Method Designed for High Performance Sodium-Ion Battery. Polymers 2020, 12, 405.

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