scholarly journals High-Voltage Sulfolane Plasticized UV-Curable Gel Polymer Electrolyte

Polymers ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 1306
Author(s):  
Shiqi Wang ◽  
Chun Wei ◽  
Wenwen Ding ◽  
Linmin Zou ◽  
Yongyang Gong ◽  
...  
Keyword(s):  
Activation Energy ◽  
Ionic Conductivity ◽  
Polymer Electrolyte ◽  
High Voltage ◽  
Gel Polymer Electrolyte ◽  
Liquid Electrolyte ◽  
Temperature Conductivity ◽  
Electrochemical Window ◽  
Specific Discharge ◽  
Discharge Capacities

A high-voltage electrolyte can match high-voltage positive electrode material to fully exert its capacity. In this research, a sulfolane plasticized polymer electrolyte was prepared by in situ photocuring. First, the effect of the sulfolane content on the ionic conductivity of the gel polymer electrolyte was investigated. Results showed that the ionic conductivity variation trend was in good agreement with the exponential function model for curve fitting. Second, the activation energy was calculated from the results of the variable temperature conductivity tests. The activation energy was inversely proportional to the sulfolane content. For the sulfolane content of 80 wt. % in gel polymer electrolyte (GPE)-80 (19.5 kJ/mol), the activation energy was close to conventional liquid electrolyte (9.5 kJ/mol), and the conductivity and electrochemical window were 0.64 mS/cm and 5.86 V, respectively. The battery cycle performance test showed that the initial specific discharge capacities of GPE-80 and liquid electrolyte were 176.8 and 148.3 mAh/g, respectively. After 80 cycles, the discharge capacities of GPE-80 and liquid electrolyte were 115.8 and 41.1 mAh/g, and the capacity retention rates were 65.5% and 27.7%, respectively; indicating that GPE-80 has a better specific discharge capacity and cycling performance than the liquid electrolyte. SEM images indicated that GPE-80 can suppress the growth of lithium dendrites. The EDS test showed that GPE-80 can inhibit the dissolution of metal ions in the cathode material.

Poly(acrylamide-co-acrylic acid) gel polymer electrolyte incorporating with water-soluble sodium sulfide salt for quasi-solid-state quantum dot-sensitized solar cell

2020 ◽  
Vol 32 (2) ◽  
pp. 183-191
Author(s):  
YC Lee ◽  
MH Buraidah ◽  
HJ Woo
Keyword(s):  
Ionic Conductivity ◽  
Acrylic Acid ◽  
Quantum Dot ◽  
Polymer Electrolyte ◽  
Sodium Sulfide ◽  
Ethylene Carbonate ◽  
Gel Polymer Electrolyte ◽  
Liquid Electrolyte ◽  
Water Soluble ◽  
Poly Acrylamide

Rapid decay of photoanode, leakage from sealant, and evaporation of electrolyte are always the major concerns of quantum dot-sensitized solar cells (QDSCs) based on liquid electrolyte. Subsequently, gel polymer electrolyte (GPE) appears as an attractive solution in addition to lower cost, lighter weight, and flexibility. Poly(acrylamide- co-acrylic acid) (PAAm-PAA) is of special interest to act as a polymer host to entrap liquid electrolyte because it provides high transparency, good gelatinizing properties, and excellent compatibility with the liquid electrolyte. In this work, the electrical and transport properties of PAAm-PAA GPE incorporating with water-soluble sodium sulfide were characterized by impedance spectroscopy. An increment of ionic conductivity was observed with the incorporation of ethylene carbonate (EC) and potassium chloride (KCl). The highest room temperature ionic conductivity of PAAm-PAA GPE is 70.82 mS·cm−1. QDSC based on PAAm-PAA GPE with the composition of 1.3 wt% of KCl, 0.9 wt% of EC, 55.3 wt% of PAAm-PAA, 38.5 wt% of sodium sulfide, and 4.0 wt% of sulfur can present up to 1.80% of light-to-electricity conversion efficiency.

scholarly journals Enhanced Electrochemical Properties of Gel Polymer Electrolyte with Hybrid Copolymer of Organic Palygorskite and Methyl Methacrylate

Materials ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 1814 ◽  
Author(s):  
Lanlan Tian ◽  
Lian Xiong ◽  
Xuefang Chen ◽  
Haijun Guo ◽  
Hairong Zhang ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Polymer Electrolyte ◽  
Organic Liquid ◽  
Gel Polymer Electrolyte ◽  
Lithium Ion ◽  
Liquid Electrolyte ◽  
Inorganic Nanoparticles ◽  
High Discharge Capacity ◽  
Hybrid Copolymer ◽  
Electrochemical Window

Gel polymer electrolyte (GPE) is widely considered as a promising safe lithium-ion battery material compared to conventional organic liquid electrolyte, which is linked to a greater risk of corrosive liquid leakage, spontaneous combustion, and explosion. GPE contains polymers, lithium salts, and liquid electrolyte, and inorganic nanoparticles are often used as fillers to improve electrochemical performance. However, such composite polymer electrolytes are usually prepared by means of blending, which can impact on the compatibility between the polymer and filler. In this study, the hybrid copolymer poly (organic palygorskite-co-methyl methacrylate) (poly(OPal-MMA)) is synthesized using organic palygorskite (OPal) and MMA as raw materials. The poly(OPal-MMA) gel electrolyte exhibits an ionic conductivity of 2.94 × 10−3 S/cm at 30 °C. The Li/poly(OPal-MMA) electrolyte/LiFePO4 cell shows a wide electrochemical window (approximately 4.7 V), high discharge capacity (146.36 mAh/g), and a low capacity-decay rate (0.02%/cycle).

Ionic Transport in PMMA-NaCF3SO3 Gel Polymer Electrolyte

2012 ◽  
Vol 545 ◽  
pp. 259-263 ◽  
Author(s):  
Zurina Osman ◽  
Siti Mariam Samin ◽  
Lisani Othman ◽  
Khairul Bahiyah Md. Isa
Keyword(s):  
Ionic Conductivity ◽  
Polymer Electrolyte ◽  
Gel Polymer Electrolyte ◽  
Transference Number ◽  
Ionic Mobility ◽  
Charge Carriers ◽  
Temperature Conductivity ◽  
Room Temperature Conductivity ◽  
Casting Technique ◽  
Mobility Of Charge Carriers

In this work, the polymethylmethacrylate (PMMA) based gel polymer electrolyte samples have been prepared by the solution casting technique. The composition range of the salt was from 3 wt% to 35 wt%. The ionic conductivity of the samples was measured using a.c. impedance technique. The highest room temperature conductivity was obtained from the sample containing 30 wt% of NaCF3SO3 salt, i.e. 5.31 x 10-3 S cm-1. The increase in the ionic conductivity with increasing salt concentrations is due to the increase in both concentration and mobility of charge carriers. The decrease in ionic conductivity at higher salt concentrations can be explained by aggregation of the ions, leading to the formation of ion-pair, thus decreasing the number of charge carriers and hence the ionic mobility. The conductivity-temperature dependence obeys the Arrhenius rule from which the activation energy was evaluated. The ionic transference number estimated by dc polarization method revealed that the conducting species are predominantly ions.

scholarly journals A Self-Healing Ionic Liquid-Based Ionically Cross-Linked Gel Polymer Electrolyte for Electrochromic Devices

Polymers ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 742
Author(s):  
Wanyu Chen ◽  
Siyuan Liu ◽  
Le Guo ◽  
Guixia Zhang ◽  
Heng Zhang ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Conductivity ◽  
Polymer Electrolyte ◽  
Gel Polymer Electrolyte ◽  
Liquid Electrolyte ◽  
Optical Modulation ◽  
Self Healing ◽  
Electrochromic Devices ◽  
Coloration Efficiency ◽  
Fto Glass

An ionic liquid-based ionically cross-linked gel polymer electrolyte (GPE-ILs) was successfully synthesized using acrylic acid, 2-diethylaminoethyl methacrylate, methyl methacrylate, and ionic liquids. Electrochromic devices (ECDs) with an architecture of glass/FTO/WO3/GPE-ILs/FTO/glass were fabricated by a laminating technology. The devices showed performances of large optical modulation of 49.9% at 650 nm, short switching times with the coloration time (tc) of 7 s and the bleaching time (tb) of 4 s, high coloration efficiency of 96.2 cm2 C−1, and cycling stability of 200 cycles. The GPE-ILs exhibits high ionic conductivity, superior thermal stability and good self-healing ability. GPE-ILs demonstrates an ionic conductivity of 3.19 × 10−3 S cm−1 at 25 °C and the same ions migration behaviors with most widely used liquid electrolyte between −10 and 80 °C maintains more than 80% of its tensile strength after self-healing and received only 5% weight loss at 300 °C.

scholarly journals Polarity-tuned Gel Polymer Electrolyte Coating of High-voltage LiCoO2Cathode Materials

2011 ◽  
Vol 14 (2) ◽  
pp. 117-124
Author(s):  
Jang-Hoon Park ◽  
Ju-Hyun Cho ◽  
Jong-Su Kim ◽  
Eun-Gi Shim ◽  
Yun-Sung Lee ◽  
...  
Keyword(s):  
Polymer Electrolyte ◽  
High Voltage ◽  
Gel Polymer Electrolyte

Sago Gel Polymer Electrolyte for Zinc-Air Battery

2010 ◽  
Vol 72 ◽  
pp. 305-308 ◽  
Author(s):  
M.N. Masri ◽  
M.F.M. Nazeri ◽  
A.A. Mohamad
Keyword(s):  
Ionic Conductivity ◽  
Polymer Electrolyte ◽  
Discharge Capacity ◽  
Potassium Hydroxide ◽  
Gel Polymer Electrolyte ◽  
Practical Capacity ◽  
Air Battery

A sago-based gel polymer electrolyte (GPE) was prepared by mixing native sago with potassium hydroxide (KOH) aqueous in order to investigate the applicability of GPE to zinc-air (Zn-air) battery. The viscosity and conductivity of the sago GPE were evaluated using varying sago amounts and KOH concentrations. The viscosity of the sago GPE was kept as a reserve in the region of ~ 0.2 Pa s as the KOH concentration was increased from 2 to 8 M. Sago GPE was found to have an excellent ionic conductivity of (4.45  0.1) x 10-1 S cm-1 with 6 M KOH. GPE was also employed in an experimental Znair battery using porous Zn electrode as the anode. The battery shows outstanding discharge capacity and practical capacity obtained of 505 mA h g-1.

Sign in / Sign up

Export Citation Format

Share Document