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

Polymers ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 405 ◽  
Author(s):  
Ponnaiah Arjunan ◽  
Mathiyalagan Kouthaman ◽  
Rengapillai Subadevi ◽  
Karuppiah Diwakar ◽  
Wei-Ren Liu ◽  
...  
Keyword(s):  
Silicon Dioxide ◽  
Composite Membrane ◽  
Phase Inversion ◽  
Sodium Ion ◽  
Inversion Method ◽  
Electrochemical Performances ◽  
Suitable Alternative ◽  
Electrolyte Uptake ◽  
Composite Separator ◽  
Phase Inversion Method

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.

scholarly journals A New Class of P(VdF-HFP)-CeO2-LiClO4-Based Composite Microporous Membrane Electrolytes for Li-Ion Batteries

2011 ◽  
Vol 2011 ◽  
pp. 1-10 ◽  
Author(s):  
G. Vijayakumar ◽  
S. N. Karthick ◽  
A. Subramania
Keyword(s):  
Composite Membrane ◽  
Phase Inversion ◽  
Vinylidene Fluoride ◽  
Composite Membranes ◽  
Cycling Performance ◽  
Microporous Membrane ◽  
Inversion Method ◽  
Electrolyte Uptake ◽  
A Cell ◽  
Polymer Dissolution

Composite microporous membranes based on Poly (vinylidene fluoride–co-hexafluoro propylene) P(VdF-co-HFP)-CeO2were prepared by phase inversion and preferential polymer dissolution process. It was then immersed in 1M LiClO4-EC/DMC (v/v=1:1) electrolyte solution to obtain their corresponding composite microporous membrane electrolytes. For comparison, composite membrane electrolytes were also prepared by conventional phase inversion method. The surface morphology of composite membranes obtained by both methods was examined by FE-SEM analysis, and their thermal behaviour was investigated by DSC analysis. It was observed that the preferential polymer dissolution composite membrane electrolytes (PDCMEs) had better properties, such as higher porosity, electrolyte uptake (216 wt%), ionic conductivity (3.84 mS⋅cm−1) and good electrochemical stability (4.9 V), than the phase inversion composite membrane electrolytes (PICMEs). As a result, a cell fabricated with PDCME in between mesocarbon microbead (MCMB) anode and LiCoO2cathode had better cycling performance than a cell fabricated with PICME.

scholarly journals Use of Silica Gel from Volcanic Ash as Chitosan Composite Membrane’s Filler

2019 ◽  
Vol 31 (10) ◽  
pp. 2303-2305
Author(s):  
Maulida Lubis ◽  
Lilis Sukeksi ◽  
Mara Bangun Harahap ◽  
Melva Ginting ◽  
Herlinawati Wici ◽  
...  
Keyword(s):  
Water Absorption ◽  
Silica Gel ◽  
Composite Membrane ◽  
Phase Inversion ◽  
Volcanic Ash ◽  
Composite Membranes ◽  
Inversion Method ◽  
Stirring Time ◽  
Phase Inversion Method ◽  
Chitosan Composite

This study aims to determine the process of making composite membranes of chitosan and silica fillers from volcanic ash of Sinabung mountain and determine the physical properties of chitosan composite membranes viz. degree of water absorption, functional groups. In this study, composite membranes were made using phase inversion method with the composition of chitosan and silica used were 2 g of chitosan and variations in dosage of fillers 0.6, 0.9 and 1.2 g of silica, while the stirring time was 8, 12 and 16 h. Based on the results , the best membrane conditions were obtained from composite membrane analysis with the best conditions of composite membranes at water absorption is 44.58 %. From the results of FTIR analysis, indicated the presence of OH bonds and Si-O-Si bonds on composite membranes caused by silica gel characteristics of composite membranes also supported by EDX analysis showed composite membrane contained carbon 55.17 %, oxygen 20.36 % and silicon 10.42 %.

Gel polymer electrolyte with high performances based on poly(methyl methacrylate) composited with hydroxypropyl methyl cellulose by phase inversion method for lithium-ion batteries

2021 ◽  
pp. 2151017
Author(s):  
Junyuan Gan ◽  
Yun Huang ◽  
Zhicheng Guo ◽  
Saisai Li ◽  
Wenhao Ren ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Lithium Ion Batteries ◽  
Polymer Electrolyte ◽  
Composite Membrane ◽  
Phase Inversion ◽  
Gel Polymer Electrolyte ◽  
Methyl Cellulose ◽  
Lithium Ion ◽  
Inversion Method ◽  
Phase Inversion Method

A novel type of gel polymer electrolyte (GPE) based on poly(methyl methacrylate) (PMMA) composite natural polymer hydroxyl propyl methyl cellulose (HPMC) was prepared with high comprehensive performances for lithium ion batteries. In this study, the composite membrane was prepared through phase inversion method. When the mass ratio of PMMA to HPMC is 4:6, the composite membrane exhibits a very high liquid uptake of 1715.07 wt.%, and the corresponding ion conductivity is as high as 6.89 × 10[Formula: see text] S cm[Formula: see text], lithium ion transference number reaches up to 0.80, and electrochemical stability window is high enough up to 5.0 V at room temperature. In addition, through charge and discharge experimental test, Li/GPE/LiFePO4 batteries exhibit excellent initial discharge capacities 166 and 121 mAh g[Formula: see text] at 0.2C and 1C rates, respectively. Therefore, the composite membrane with low cost and high performance researched in this work is an effective and promising GPE material, which presents a potential for applying in lithium-ion batteries (LIBs).

A straight, open and macro-porous fuel electrode-supported protonic ceramic electrochemical cell

2021 ◽  
Author(s):  
Yuxin Pan ◽  
Kai Pei ◽  
Yucun Zhou ◽  
Tong Liu ◽  
Meilin Liu ◽  
...  
Keyword(s):  
Phase Inversion ◽  
Electrochemical Cell ◽  
Inversion Method ◽  
Phase Inversion Method

A straight, open and macro-porous Ni–BaZr0.1Ce0.7Y0.1Yb0.1O3 fuel electrode-supported protonic ceramic electrochemical cell has been fabricated by a modified phase-inversion method.

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