Electrochemical Characterization of Single Lithium-Ion Conducting Polymer Electrolytes Based on sp3 Boron and Poly(ethylene glycol) Bridges

2018 ◽  
Vol 10 (36) ◽  
pp. 30247-30256 ◽  
Author(s):  
Gregorio Guzmán-González ◽  
Hugo J. Ávila-Paredes ◽  
Ernesto Rivera ◽  
Ignacio González
Keyword(s):  
Ethylene Glycol ◽  
Conducting Polymer ◽  
Polymer Electrolytes ◽  
Lithium Ion ◽  
Electrochemical Characterization ◽  
Poly Ethylene Glycol ◽  
Ion Conducting ◽  
Poly Ethylene ◽  
Ion Conducting Polymer

scholarly journals Ion-Conducting Polymer Electrolyte Based on Poly (Ethylene Glycol) Complexed with Mg(CH3COO)2–Application as an Electrochemical Cell

2012 ◽  
Vol 9 (2) ◽  
pp. 869-874 ◽  
Author(s):  
Anji Reddy Polu ◽  
Ranveer Kumar
Keyword(s):  
Ethylene Glycol ◽  
Polymer Electrolyte ◽  
Conducting Polymer ◽  
Electrochemical Cell ◽  
Transference Number ◽  
Poly Ethylene Glycol ◽  
Dsc Measurements ◽  
Ion Conducting ◽  
Poly Ethylene ◽  
Ion Conducting Polymer

A new Mg2+-ion conducting polymer electrolyte based on Poly (ethylene glycol) complexed with Mg(CH3COO)2has been prepared using solution-cast technique. DSC, Composition-dependent conductivity at different temperatures, dielectric studies, and transference number measurements have been performed to characterize the polymer electrolytes. The DSC measurements show decrease in melting point with increase in salt concentration. Out of five different compositions studied, the 85PEG: 15Mg(CH3COO)2polymer-salt complex showed the highest conductivity with σ = 1.07 x 10-6 S/cm at room temperature (30°C). The transport number measurements have shown that the electrolyte is an ionic conductor. Using the electrolyte, an electrochemical cell with the configuration Mg/(PEG+Mg(CH3COO)2)/(I2+C+electrolyte) has been fabricated and its discharge characteristics studied.

scholarly journals Comparison of Single-Ion Conducting Polymer Gel Electrolytes for Sodium, Potassium, and Calcium Batteries: Influence of Polymer Chemistry, Cation Identity, Charge Density, and Solvent on Conductivity

Batteries ◽  
2020 ◽  
Vol 6 (1) ◽  
pp. 11
Author(s):  
Hunter Ford ◽  
Chuanchuan Cui ◽  
Jennifer Schaefer
Keyword(s):  
Conducting Polymer ◽  
Lithium Ion ◽  
Lessons Learned ◽  
Polymer Gel ◽  
Charge Densities ◽  
X Ray Scattering ◽  
Ion Conducting ◽  
Poly Ethylene ◽  
The Impact ◽  
Ion Conducting Polymer

From the standpoint of material diversification and sustainability, the development of so-called “beyond lithium-ion” battery chemistries is important for the future of energy storage. Na, K, and Ca are promising as the basis for battery chemistries in that these elements are highly abundant. Here, a series of single-ion conducting polymer electrolytes (SIPEs) for Na, K, and Ca batteries are synthesized and investigated. The two classes of metal cation neutralized SIPEs compared are crosslinked poly(ethylene glycol) dimethacrylate-x-styrene sulfonate (PEGDMA-SS) and poly(tetrahydrofuran) diacrylate-x-4-styrenesulfonyl (trifluoromethylsulfonyl)imide (PTHFDA-STFSI); three cation types, three charge densities, and four swelling states are examined. The impact on conductivity of all of these parameters is studied, and in conjunction with small angle X-ray scattering (SAXS), it is found that promoting ion dissociation and preventing the formation of dense ionic aggregates facilitates ion transport. These results indicate many of the lessons learned from the Li SIPE literature can be translated to beyond Li chemistries. At 25 °C, the best performing Na/K and Ca exchanged polymers yield active cation conductivity on the order of 10−4 S/cm and 10−6 S/cm, respectively, for ethylene carbonate:propylene carbonate gelled SIPEs, and 10−5 S/cm and 10−7 S/cm, respectively, for glyme gelled SIPEs.

scholarly journals Polymer Electrolytes Based on Borane/Poly(ethylene glycol) Methyl Ether for Lithium Batteries

2017 ◽  
Vol 2017 ◽  
pp. 1-6
Author(s):  
Ali Murat Soydan ◽  
Recep Akdeniz
Keyword(s):  
Ethylene Glycol ◽  
Methyl Ether ◽  
Polymer Electrolytes ◽  
Lithium Ion ◽  
Poly Ethylene Glycol ◽  
Scanning Calorimetry ◽  
Molar Ratios ◽  
Poly Ethylene ◽  
Chain Lengths ◽  
Glycol Methyl Ether

This work presents a different approach to preparing polymer electrolytes having borate ester groups for lithium ion batteries. The polymers were synthesized by reaction between poly(ethylene glycol) methyl ether (PEGME) and BH3-THF complex. Molecular weight of PEGMEs was changed with different chain lengths. Then the polymer electrolytes comprising boron were prepared by doping of the matrices with CF3SO3Li at various molar ratios with respect to EO to Li and they are abbreviated as PEGMEX-B-Y. The identification of the PEGME-borate esters was carried out by FTIR and 1H NMR spectroscopy. Thermal properties of these electrolytes were investigated via thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The ionic conductivity of these novel polymer electrolytes was studied by dielectric-impedance spectroscopy. Lithium ion conductivity of these electrolytes was changed by the length of PEGME as well as the doping ratios. They exhibit approximate conductivities of 10−4 S·cm−1 at 30°C and 10−3 S·cm−1 at 100°C.

Single Lithium-Ion Conducting Polymer Electrolytes Based on a Super-Delocalized Polyanion

2016 ◽  
Vol 55 (7) ◽  
pp. 2521-2525 ◽  
Author(s):  
Qiang Ma ◽  
Heng Zhang ◽  
Chongwang Zhou ◽  
Liping Zheng ◽  
Pengfei Cheng ◽  
...  
Keyword(s):  
Conducting Polymer ◽  
Polymer Electrolytes ◽  
Lithium Ion ◽  
Ion Conducting ◽  
Ion Conducting Polymer
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