Rapid Measurement of the Apparent Transference Number and Salt Diffusion Coefficient in Solid Polymer Electrolytes

1999 ◽  
Vol 2 (4) ◽  
pp. 187 ◽  
Author(s):  
Lynn Christie
Keyword(s):  
Diffusion Coefficient ◽  
Polymer Electrolytes ◽  
Transference Number ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Rapid Measurement ◽  
Salt Diffusion

Proton Conducting Carboxy Methyl Cellulose Solid Polymer Electrolytes Doped with Citric Acid

2014 ◽  
Vol 895 ◽  
pp. 130-133 ◽  
Author(s):  
W.F. Ng ◽  
Mui Nyuk Chai ◽  
M.I.N. Isa
Keyword(s):  
Citric Acid ◽  
Polymer Electrolytes ◽  
Methyl Cellulose ◽  
Proton Conductor ◽  
Transference Number ◽  
Ionic Mobility ◽  
Solid Polymer Electrolytes ◽  
Electrical Impedance Spectroscopy ◽  
Solid Polymer ◽  
Casting Technique

Novel solid polymer electrolytes containing carboxy methylcellulose (CMC) are prepared based on the vary concentration (0 - 45 wt. %) of citric acid (CA) via solution casting technique. The ion conductivity is studied by electrical impedance spectroscopy and the ionic mobility, μ and the diffusion coefficient, D is investigated by transference number measurement. The highest ionic conductivity at room temperature (303K) is 4.38 x 10-7 S cm-1 for 40 wt. % CA. The values of μ+ and D+ were higher than μ- and D- respectively, implying that the CMC-CA solid polymer electrolytes are proton conductor.

scholarly journals Compatible Solid Polymer Electrolyte Based on Methyl Cellulose for Energy Storage Application: Structural, Electrical, and Electrochemical Properties

Polymers ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 2257 ◽  
Author(s):  
Shujahadeen B. Aziz ◽  
Iver Brevik ◽  
Muhamad H. Hamsan ◽  
M. A. Brza ◽  
Muaffaq M. Nofal ◽  
...  
Keyword(s):  
Energy Storage ◽  
Polymer Electrolyte ◽  
Polymer Electrolytes ◽  
Methyl Cellulose ◽  
Linear Sweep Voltammetry ◽  
Transference Number ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
High Concentration ◽  
Green Polymer

Compatible green polymer electrolytes based on methyl cellulose (MC) were prepared for energy storage electrochemical double-layer capacitor (EDLC) application. X-ray diffraction (XRD) was conducted for structural investigation. The reduction in the intensity of crystalline peaks of MC upon the addition of sodium iodide (NaI) salt discloses the growth of the amorphous area in solid polymer electrolytes (SPEs). Impedance plots show that the uppermost conducting electrolyte had a smaller bulk resistance. The highest attained direct current DC conductivity was 3.01 × 10−3 S/cm for the sample integrated with 50 wt.% of NaI. The dielectric analysis suggests that samples in this study showed non-Debye behavior. The electron transference number was found to be lower than the ion transference number, thus it can be concluded that ions are the primary charge carriers in the MC–NaI system. The addition of a relatively high concentration of salt into the MC matrix changed the ion transfer number from 0.75 to 0.93. From linear sweep voltammetry (LSV), the green polymer electrolyte in this work was actually stable up to 1.7 V. The consequence of the cyclic voltammetry (CV) plot suggests that the nature of charge storage at the electrode–electrolyte interfaces is a non-Faradaic process and specific capacitance is subjective by scan rates. The relatively high capacitance of 94.7 F/g at a sweep rate of 10 mV/s was achieved for EDLC assembly containing a MC–NaI system.

scholarly journals Reducing crystallinity in solid polymer electrolytes for lithium-metal batteries via statistical copolymerization

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Vincent St-Onge ◽  
Mengyang Cui ◽  
Sylviane Rochon ◽  
Jean-Christophe Daigle ◽  
Jerome P. Claverie
Keyword(s):  
Polymer Electrolyte ◽  
Polyethylene Oxide ◽  
Polymer Electrolytes ◽  
Transference Number ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Minimal Amount ◽  
Lithium Metal ◽  
Efficient Tool ◽  
Lithium Metal Batteries

AbstractThe discovery that polyethylene oxide promotes ionic conductivity led to the development of solid polymer electrolytes. However, their conductivity is severely reduced by crystallinity. Here, statistical copolymerization is used to design macromolecular architectures where crystallinity is disrupted by a minimal amount of non-ethylene oxide comonomer units. Using the Flory exclusion model, we demonstrate that polymers containing 18 mol% comonomer and 18 wt% LiTFSI are devoid of crystallinity. A 10 mol% comonomer content is sufficient to reach a conductivity of 0.3 × 10−4 S cm−1 at 25 °C. The Li+ transference number is 0.6, indicating that the comonomer units not only limit the crystallinity but also weaken the strength of the Li+ coordination to the polymer. The resulting solid polymer electrolyte is effective in an all-solid LFP|Li-metal battery operating at 25 °C, demonstrating that statistical copolymerization is an efficient tool for polymer electrolyte design.

Single lithium-ion conducting solid polymer electrolytes: advances and perspectives

2017 ◽  
Vol 46 (3) ◽  
pp. 797-815 ◽  
Author(s):  
Heng Zhang ◽  
Chunmei Li ◽  
Michal Piszcz ◽  
Estibaliz Coya ◽  
Teofilo Rojo ◽  
...  
Keyword(s):  
Growth Rate ◽  
Lithium Batteries ◽  
Polymer Electrolytes ◽  
Detrimental Effect ◽  
Lithium Ion ◽  
Transference Number ◽  
Dendrite Growth ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Ion Conducting

Single lithium-ion conducting solid polymer electrolytes (SLIC-SPEs), with a high lithium-ion transference number, the absence of the detrimental effect of anion polarization, and low dendrite growth rate, could be an excellent choice of safe electrolyte materials for lithium batteries in the future.

Siloxane Diacrylate-based All-Solid Polymer Electrolytes for Lithium Batteries

2015 ◽  
Vol 2 (1) ◽  
pp. 23-27
Author(s):  
Jijeesh Nair ◽  
◽  
Matteo Destro ◽  
Claudio Gerbaldi ◽  
Federico Bella
Keyword(s):  
Lithium Batteries ◽  
Polymer Electrolytes ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer
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