Development of Novel Bio-Degradable Electrolyte Based on Polylactide (PLA) for Lithium Rechargeable Battery

Development of Novel Bio-degradable Electrolyte Based on Polylactide (pla) for Lithium Rechargeable Batteryarmfu� h� r�rment, degradable polymer which is Polylactide (PLA) was chosen as the host material in the electrolyte. PLA alone had low ionic conductivity which cannot satisfy the current electrical appliance usage. Therefore, PLA is complexed with Ethylene Carbonate, Lithium perchlorate and Aluminum Oxide using THF as a wetting agent. The ionic conductivity of the electrolyte is tested with a.c impedance spectroscopy to determine its ionic conductivity. The highest ionic conductivity of pure PLA is 3.624 x 10-12 Scm-1. The PLA is mixed with Ethylene Carbonate to increase its amorphous nature. The result showed that PLA when mixed with 35% of EC give the highest conductivity which is 1.90 x 10-10 Scm-1. While the PLA mixed with 20% of Lithium perchlorate give an optimum ionic conductivity which is 5.72 x 10-7 Scm-1. Later, the ionic conductivity of PLA, EC and lithium salt mixture were carried out and shows the highest conductivity of 1.44 x 10-6 Scm-1. Lastly, with the addition of 4% aluminum oxide filler, the highest conductivity is boosted to 2.07 x 10-5 Scm-1. The samples were then analyzed using scanning electron microscope (SEM) to better understand the microstructure of the polymer system.

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Design of Ionic Liquids for Electrochemical Applications

Australian Journal of Chemistry ◽

10.1071/ch03240 ◽

2004 ◽

Vol 57 (2) ◽

pp. 139 ◽

Cited By ~ 92

Author(s):

Masahiro Yoshizawa ◽

Asako Narita ◽

Hiroyuki Ohno

Keyword(s):

Ionic Liquids ◽

Ionic Conductivity ◽

Lithium Salt ◽

Liquid Lithium ◽

Melting Points ◽

Salt Mixture ◽

Liquid Salt ◽

Electrochemical Applications ◽

Salt Mixtures ◽

The Relationship

Zwitterionic liquids composed of a tethered cation and anion were synthesized and their thermal properties and ionic conductivity were investigated as novel ionic liquids especially for electrochemical applications. We prepared nine zwitterions in this study. In addition, this paper includes 36 kinds of zwitterions already reported in order to discuss the relationship between the zwitterion structure and their properties. Most zwitterions melt above 100°C; their melting points are generally higher than that of simple ionic liquids. When an equimolar amount of lithium salt (LiTFSI, LiBETI, LiCF3SO3, LiBF4, or LiClO4) was added to the zwitterion, the mixture showed only a glass transition temperature Tg. The Tg values of the zwitterionic liquid/salt mixture showed the lowest value of –37°C when mixed with LiTFSI. This mixture also showed the highest ionic conductivity of 8.9 × 10–4 S cm–1 at 100°C. There is a good relationship between Tg and the ionic conductivity of the zwitterionic liquid/lithium salt mixtures.

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Theoretical Studies of Lithium Perchlorate in Ethylene Carbonate, Propylene Carbonate, and Their Mixtures

Journal of The Electrochemical Society ◽

10.1149/1.1392523 ◽

1999 ◽

Vol 146 (10) ◽

pp. 3613-3622 ◽

Cited By ~ 93

Author(s):

Tao Li ◽

Perla B. Balbuena

Keyword(s):

Propylene Carbonate ◽

Ethylene Carbonate ◽

Lithium Perchlorate ◽

Theoretical Studies

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Conductivity-Temperature Dependent Studies on MG49 Doped Lithium Triflate Salt

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1107.181 ◽

2015 ◽

Vol 1107 ◽

pp. 181-186

Author(s):

Zaidatul Salwa Mahmud ◽

N.H.M. Zaki ◽

R. Zakaria ◽

Mohamad Faizul Yahya ◽

Ab Malik Marwan Ali

Keyword(s):

Ionic Conductivity ◽

Elevated Temperatures ◽

Ethylene Carbonate ◽

Ionic Mobility ◽

Ionic Conductors ◽

X Ray Diffraction ◽

Temperature Dependent ◽

Lithium Triflate ◽

Mobility Of Charge Carriers ◽

Solution Cast

This paper reports on the conductivity-temperature studies of gel polymer electrolytes (GPEs) based on 49% poly (methyl methacrylate) grafted-natural rubber (MG49) doped with lithium triflate salt (LiTf) and plasticized with ethylene carbonate (EC). The GPE films are prepared by solution cast technique. The X-ray diffraction (XRD) studies reveal the polymer electrolyte systems are amorphous. AC impedance spectroscopy is carried out in the temperature range between 303 and 373 K. The magnitudes of conductivity observed are strongly dependent on salt concentration and temperature. The high ionic conductivity at elevated temperatures of GPE is attributed to the high ionic mobility of charge carriers. The ionic migration is seen to follow the VTF behavior and approaches to Arrhenius rule at high and low at temperature. Ionic conductivity relaxation appears to be a characteristic of the ionic polarization and the modulus formalism studies confirmed the GPEs in the present investigation are ionic conductors.

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Ionic Conductivity, Morphology and Transport Number of Lithium Ions in PMMA Based Gel Polymer Electrolytes

Defect and Diffusion Forum ◽

10.4028/www.scientific.net/ddf.334-335.137 ◽

2013 ◽

Vol 334-335 ◽

pp. 137-142 ◽

Cited By ~ 3

Author(s):

Lisani Othman ◽

Khairul Bahiyah Md. Isa ◽

Zurina Osman ◽

Rosiyah Yahya

Keyword(s):

Ionic Conductivity ◽

Salt Concentration ◽

Polymer Electrolytes ◽

Ethylene Carbonate ◽

Transference Number ◽

Gel Polymer Electrolytes ◽

Casting Technique ◽

Ionic Transference Number ◽

Temperature Dependence Of Conductivity ◽

Solution Casting Technique

The gel polymer electrolytes (GPEs) composed of polymethylmethacrylate (PMMA) with lithium trifluoromethanesulfonate (LiCF3SO3) salt dissolved in a binary mixture of ethylene carbonate (EC) and propylene carbonate (PC) organic solvents have been prepared by the solution casting technique. The samples are prepared by varying the salt concentrations from 5 wt.% to 30 wt.%. Impedance spectroscopy measurement has been carried out to determine the ionic conductivity of the samples. The sample containing 25 wt.% of LiCF3SO3salt exhibits the highest room temperature ionic conductivity of 2.56 x 10-3S cm-1. The conductivity of the GPEs has been found to depend on the salt concentration added to the sample, while at higher salt concentration reveals a decrease in the ionic conductivity due to ions association. The temperature dependence of conductivity from 303 K to 373 K is found to obey the Arrhenius law. The ionic transference number,tiof GPEs has been estimated by the DC polarization method and the value is found to be 0.98, 0.93, and 0.97 for the sample containing 25 wt.%, 5 wt.% and 30 wt.% respectively. This result is consistent with the conductivity studies.

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Infrared spectroscopic study of the interaction between lithium salt LiClO4 and the plasticizer ethylene carbonate in the polyacrylonitrile-based electrolyte

Solid State Ionics ◽

10.1016/0167-2738(96)00051-3 ◽

1996 ◽

Vol 85 (1-4) ◽

pp. 143-148 ◽

Cited By ~ 40

Author(s):

Z Wang

Keyword(s):

Spectroscopic Study ◽

Lithium Salt ◽

Ethylene Carbonate ◽

Infrared Spectroscopic Study ◽

Infrared Spectroscopic

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Contribution Succinonitrile additive for Performa LiTFSi Solid Polymer Electrolytes for Li-Ion Battery

Eksakta Jurnal Ilmu-Ilmu MIPA ◽

10.20885/eksakta.vol1.iss2.art2 ◽

2020 ◽

Vol 20 (2) ◽

Author(s):

Qolby Sabrina ◽

Titik Lestariningsih ◽

Christin Rina Ratri ◽

Achmad Subhan

Keyword(s):

Ionic Conductivity ◽

Polymer Electrolytes ◽

Room Temperature ◽

Lithium Salt ◽

Ionic Conduction ◽

Lithium Ion ◽

Solid Polymer Electrolytes ◽

Solid Polymer ◽

Half Cell ◽

Li Ion

Solid polymer electrolyte (SPE) appropriate to solve packaging leakage and expansion volume in lithium-ion battery systems. Evaluation of electrochemical performance of SPE consisted of mixture lithium salt, solid plasticizer, and polymer precursor with different ratio. Impedance spectroscopy was used to investigate ionic conduction and dielectric response lithium bis(trifluoromethane)sulfony imide (LiTFSI) salt, and additive succinonitrile (SCN) plasticizer. The result showing enhanced high ionic conductivity. In half-cell configurations, wide electrochemical stability window of the SPE has been tested. Have stability window at room temperature, indicating great potential of SPE for application in lithium ion batteries. Additive SCN contribute to forming pores that make it easier for the li ion to move from the anode to the cathode and vice versa for better perform SPE. Pore of SPE has been charaterization with FE-SEM. Additive 5% w.t SCN shows the best ionic conductivity with 4.2 volt wide stability window and pretty much invisible pores.

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Salt Concentration Effect on Electrical and Dielectric Properties of Solid Polymer Electrolytes based Carboxymethyl Cellulose for Lithium-ion Batteries

Biointerface Research in Applied Chemistry ◽

10.33263/briac125.61146123 ◽

2021 ◽

Vol 12 (5) ◽

pp. 6114-6123

Keyword(s):

Dielectric Properties ◽

Ionic Conductivity ◽

Polymer Electrolytes ◽

Carboxymethyl Cellulose ◽

Electrochemical Impedance ◽

Lithium Ion ◽

Lithium Perchlorate ◽

Linear Sweep Voltammetry ◽

Solid Polymer Electrolytes ◽

Solid Polymer

Solid polymer electrolytes (SPEs) based carboxymethyl cellulose (CMC) with lithium perchlorate (LiClO4) were prepared via solution drop-cast technique. The CMC host is complexed by different concentrations of LiClO4 salt. SPEs were characterized by Electrochemical Impedance Spectroscopy (EIS) and Linear Sweep Voltammetry (LSV) in coin cells with lithium metal electrodes. EIS performed unique results based on various ionic conductivity values and dielectric properties. The higher ionic conductivity (1.32 × 10-5 S/cm) was obtained by SPEs 2 following by short-range ionic transport results based on dielectric properties depending on frequency. SPEs with LiClO4 addition are electrochemically stable over 2 V in lithium battery coin cells from LSV results.

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