Solvent Effect on Ion Hopping of Solid Polymer Electrolyte

Solid polymer electrolytes (SPEs) based on poly (vinyl alcohol) were prepared with dimethyl sulfoxide as a solvent. Prepared SPEs form the 'fast cationic transport process' and lithium ion hopping through 'fast cationic transport process' is occurred. In this study, we observed the dependence of ionic conductivity on the drying time of solvent and there was particular relationship between ionic conductivity and the amount of residual solvent. Especially, we investigated the influence of solvent on cation mobility in the ‘fast cationic transport process’ and we found that the solvent acted as a bridge to connect neighboring ion aggregates and made the ion hopping easy.

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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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Preparation of a ROMP-type imidazolium-functionalized norbornene ionic liquid block copolymer and the electrochemical property for lithium-ion batteries polyelectrolyte membranes

RSC Advances ◽

10.1039/c5ra04860e ◽

2015 ◽

Vol 5 (54) ◽

pp. 43581-43588 ◽

Cited By ~ 11

Author(s):

Juan Wang ◽

Xiaohui He ◽

Hongyu Zhu ◽

Defu Chen

Keyword(s):

Ionic Liquid ◽

Block Copolymer ◽

Ionic Conductivity ◽

Lithium Ion Batteries ◽

Electrochemical Property ◽

Polymer Electrolytes ◽

Lithium Ion ◽

Solid Polymer Electrolytes ◽

Solid Polymer ◽

Polyelectrolyte Membranes

Solid polymer electrolytes with high ionic conductivity have been prepared based on an imidazolium-functionalized norbornene ionic liquid block copolymer.

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Tailored Solid Polymer Electrolytes by Montmorillonite with High Ionic Conductivity for Lithium-Ion Batteries

Nanoscale Research Letters ◽

10.1186/s11671-019-3210-9 ◽

2019 ◽

Vol 14 (1) ◽

Cited By ~ 1

Author(s):

Yingjian Zhao ◽

Yong Wang

Keyword(s):

Ionic Conductivity ◽

Lithium Ion Batteries ◽

Polymer Electrolytes ◽

High Performance ◽

Lithium Ion ◽

Lewis Base ◽

Solid Polymer Electrolytes ◽

Solid Polymer ◽

Lithium Ions ◽

High Discharge Capacity

AbstractPolyethylene oxide (PEO)-based solid polymer electrolytes (SPEs) have important significance for the development of next-generation rechargeable lithium-ion batteries. However, strong coordination between lithium ions and PEO chains results the ion conductivity usually lower than the expectation. In this study, sub-micron montmorillonite is incorporated into the PEO frames as Lewis base center which enables the lithium ions to escape the restraint of PEO chains. After involving montmorillonite (MMT) into the SPEs, the ionic conductivity of SPEs is 4.7 mS cm− 1 at 70 °C which shows a comparable value with that of liquid electrolyte. As coupling with LiFePO4 material, the battery delivers a high discharge capacity of 150.3 mAh g− 1 and an excellent rate performance with a capacity of 111.8 mAh g− 1 at 0.16 C and maintains 58.2 mAh g− 1 at 0.8 C. This study suggests that the customized incorporation of Lewis base materials could offer a promising solution for achieving high-performance PEO-based solid-state electrolyte.

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Holey graphene oxide as filler to improve electrochemical performance of solid polymer electrolytes

Materials Express ◽

10.1166/mex.2019.1588 ◽

2019 ◽

Vol 9 (9) ◽

pp. 1055-1061

Author(s):

Qi Wang ◽

Zhoujie Zhang ◽

Fei Shen ◽

Bin Zhao ◽

Xiaogang Han

Keyword(s):

Graphene Oxide ◽

Ionic Conductivity ◽

Polymer Electrolytes ◽

Lithium Ion ◽

Solid Polymer Electrolytes ◽

Cycle Performance ◽

Solid Polymer ◽

Electrochemical Window ◽

Poly Ethylene Oxide ◽

Poly Ethylene

Solid polymer electrolytes (SPE) have attracted wide attention of researchers because of their high safety performance and high mechanical strength. In this paper, holey graphene oxide (HGO) was added to poly(ethylene oxide) (PEO) solid polymer electrolytes with lithium bis(trifluoromethane sulfonimide) (LiTFSI) as salt to improve the ionic conductivity of solid polymer electrolytes. It was shown that the addition of holey graphene oxide improved the electrochemical window and ionic conductivity. When the amount of holey graphene oxide was 0 wt%, the ionic conductivity was 2.06 × 10–4 S/cm at 60 °C. In comparison, when the amount of holey graphene oxide was 0.2 wt%, the ionic conductivity was greatly increased to 6.05 × 10–4 S/cm. This was mainly due to the fact that addition of holey graphene oxide reduced the crystallization of polymer and promoted the migration of lithium ion. Meanwhile, the electrochemical window was expanded to 5.2 V and the cycle performance for the batteries was also improved.

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