scholarly journals Mechanical strength and ionic conductivity of polymer electrolyte membranes prepared from cellulose acetate-lithium perchlorate

2017 ◽  
Vol 223 ◽  
pp. 012052 ◽  
Author(s):  
T Sudiarti ◽  
D Wahyuningrum ◽  
B Bundjali ◽  
I Made Arcana
Keyword(s):  
Ionic Conductivity ◽  
Mechanical Strength ◽  
Cellulose Acetate ◽  
Polymer Electrolyte ◽  
Lithium Perchlorate ◽  
Polymer Electrolyte Membranes ◽  
Electrolyte Membranes

scholarly journals SYNTHESIS OF CELLULOSE ACETATE FROM OIL PALM EMPTY FRUIT BUNCH AND ITS PROPERTIES AS POLYMER ELECTROLYTE MEMBRANES ON LITHIUM ION BATTERY

2018 ◽  
Vol 15 (2) ◽  
pp. 111 ◽  
Author(s):  
Nurhadini Nurhadini ◽  
I Made Arcana
Keyword(s):  
Ionic Conductivity ◽  
Lithium Ion Battery ◽  
Cellulose Acetate ◽  
Polymer Electrolyte ◽  
Oil Palm ◽  
Functional Group ◽  
Lithium Ion ◽  
Polymer Electrolyte Membranes ◽  
Empty Fruit Bunch ◽  
Electrolyte Membranes

Biodegradable polymer electrolyte utilization on lithium ion battery is increasingly considered to prevent any waste. This study was conducted to synthesis cellulose acetate from oil palm empty fruit bunch and its properties as polymer electrolyte membranes on lithium ion battery. This study was done by extracting cellulose from oil palm empty fruit bunch. That cellulose was acetylated become cellulose acetate and characterized its functional group. Further, polymer electrolyte was synthesized with composition 25/60/15(%b/b) (SAS/PEO/LiClO4). The properties of polymer electrolyte membranes were characterized by analysis thermal properties, ionic conductivity and mechanical properties. Based on functional group data, synthetic cellulose acetate had similar the main functional group with commercial cellulose acetate. Synthetic cellulose acetate contained 27% acetyl with 1,4 substitution degree. Analysis thermal properties showed that the decomposition of SAS/PEO/LiClO4 polymer electrolyte membranes was started above 260oC.  The ionic conductivity 10,81 x 10-4 S/cm of  these polymer electrolyte membranes was 10,81 x 10-4 S/cm. Analysis of mechanic properties were 0,05 MPa stress, 14,23 MPa elongation and 0,35 MPa Modulus Young. SAS/PEO/LiClO4 polymer electrolyte membranes had higher ionic conductivity than SAK/PEO/LiClO4 polymer electrolyte membranes. However, SAS/PEO/LiClO4 polymer electrolyte membranes had lower thermal and mechanic properties than SAK/PEO/LiClO4 polymer electrolyte membranes.  

Thermal Stability and Morphology Analysis of Polymer Electrolyte Membranes Prepared from Cellulose Acetate-LiClO4

2019 ◽  
Vol 811 ◽  
pp. 120-125
Author(s):  
Tety Sudiarti ◽  
Deana Wahyuningrum ◽  
Bunbun Bundjali ◽  
I. Made Arcana
Keyword(s):  
Thermal Stability ◽  
Cellulose Acetate ◽  
Polymer Electrolyte ◽  
Lithium Perchlorate ◽  
Degradation Process ◽  
Porous Membrane ◽  
Polymer Electrolyte Membranes ◽  
Cellulose Acetate Membrane ◽  
Pure Cellulose ◽  
Electrolyte Membranes

Polymer electrolyte membranes of cellulose acetate-LiClO4 were prepared from the cellulose acetate with various ratios of lithium perchlorate in tetrahydrofuran (THF) as solvent. The properties of polymer electrolyte membranes with various ratios of lithium perchlorate were studied by Thermogravimetric Analysis (TGA) and Scanning Electron Microscopy (SEM). The obtained TGA curves showed that these membranes were degraded thermally in three steps, which were attributed to dehydration, the main thermal degradation of the cellulose acetate chains, and the carbonization of the product to form ash. The thermal stability of the membrane decreased with the increase in LiClO4 content. The initial temperatures of the main degradation process decreased gradually from 330 °C in pure cellulose acetate membrane to 258 °C in cellulose acetate membrane containing 25% lithium perchlorate. The morphology of the membranes transformed from dense to the more porous membrane along with the increase in lithium perchlorate ratios on membranes.

The Evaluation of Ionic Conductivity in Polymer Electrolyte Membranes

2008 ◽  
Vol 59 (10) ◽  
Author(s):  
Danut-Ionel Vaireanu ◽  
Ioana Maior ◽  
Alexandra Grigore ◽  
David Savoiu
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Ionic Conductivity ◽  
Impedance Spectroscopy ◽  
Polymer Electrolyte ◽  
Electrochemical Cell ◽  
Electrochemical Impedance ◽  
Polymer Electrolyte Membranes ◽  
Membrane Thickness ◽  
Electrolyte Membranes ◽  
Conducting Membranes

A novel electrochemical cell for the evaluation of the ionic conductivity in polymer conducting membranes is proposed. This cell has the advantages of being able to determine with high precision the membrane thickness during electrochemical impedance spectroscopy measurements. A conductivity factor is also proposed in order to classify various membranes with respect to their conductivity versus a reference membrane, namely Nafion� 117.

scholarly journals Characterizations of PMMA-based polymer electrolyte membranes with Al2O3

2019 ◽  
Vol 39 (7) ◽  
pp. 612-619 ◽  
Author(s):  
Cha Chee Sun ◽  
Ah Heng You ◽  
Lay Lian Teo
Keyword(s):  
Particle Size ◽  
Ionic Conductivity ◽  
Polymer Electrolyte ◽  
Polymer Electrolytes ◽  
Polymer Electrolyte Membranes ◽  
Average Particle ◽  
Cole Plot ◽  
Electrolyte Membranes ◽  
Nano Size ◽  
Host Polymer

Abstract Poly(methyl methacrylate) (PMMA)-based polymer electrolyte membranes are prepared through the solution cast method, with PMMA:ethylene carbonate (EC):LiCF3SO3:Al2O3 weight ratio of 55.13:18.34:24.5:2. The effect of Al2O3 filler grain sizes of 50 nm and 10 μm on the polymer electrolytes was studied in this work. From the Cole-Cole plot obtained through electrochemical impedance spectroscopy, the highest ionic conductivity for 50-nm Al2O3 in the PMMA-LiCF3SO3-EC-Al2O3 sample was measured as 1.52 × 10−4 S/cm at room temperature. The bonding formation among the host polymer and other additives in the polymer electrolytes has been studied using Fourier transform infrared spectroscopy. A strong occurrence of CH3 stretching mode has proven that nano size Al2O3 results in a much stronger bonding effect with the host polymer. The particle sizes were calculated by applying the Debye-Scherrer equation from the X-ray diffraction results. This work considers the effect of instrument broadening to further improve the accuracy of particle broadening for particle size calculation. The average particle size of nano size Al2O3 in the PMMA sample is calculated as 2.9693 nm. Moreover, a higher amorphousity level obtained from nano size filler polymer electrolyte of 98.5% computed from differential scanning calorimetry thermograms had also explained the achievement of high ionic conductivity in this work.

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