Effect of Plasticizers on Methyl Cellulose-Based Alkaline Solid Polymer Electrolytes

2010 ◽  
Author(s):  
N. H. A. Rosli ◽  
N. I. Harun ◽  
M. F. M. Taib ◽  
S. I. Y. Saaid ◽  
T. I. T. Kudin ◽  
...  
Keyword(s):  
Polymer Electrolytes ◽  
Methyl Cellulose ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer

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.

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

Solid Polymer Electrolytes from Crosslinked PEG and Dilithium N,N'-Bis(trifluoromethanesulfonyl)perfluoroalkane-1,ω-disulfonamide and Lithium Bis(trifluoromethanesulfonyl)imide Salts

2008 ◽  
Vol 73 (12) ◽  
pp. 1777-1798 ◽  
Author(s):  
Olt E. Geiculescu ◽  
Rama V. Rajagopal ◽  
Emilia C. Mladin ◽  
Stephen E. Creager ◽  
Darryl D. Desmarteau
Keyword(s):  
Ionic Conductivity ◽  
Polymer Electrolytes ◽  
Minimum Energy ◽  
Ionic Conductivities ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Segmental Motion ◽  
Concentrated Electrolytes ◽  
Two Factors ◽  
Poly Ethylene

The present work consists of a series of studies with regard to the structure and charge transport in solid polymer electrolytes (SPE) prepared using various new bis(trifluoromethanesulfonyl)imide (TFSI)-based dianionic dilithium salts in crosslinked low-molecular-weight poly(ethylene glycol). Some of the thermal properties (glass transition temperature, differential molar heat capacity) and ionic conductivities were determined for both diluted (EO/Li = 30:1) and concentrated (EO/Li = 10:1) SPEs. Trends in ionic conductivity of the new SPEs with respect to anion structure revealed that while for the dilute electrolytes ionic conductivity is generally rising with increased length of the perfluoroalkylene linking group in the dianions, for the concentrated electrolytes the trend is reversed with respect to dianion length. This behavior could be the result of a combination of two factors: on one hand a decrease in dianion basicity that results in diminished ion pairing and an enhancement in the number of charge carriers with increasing fluorine anion content, thereby increasing ionic conductivity while on the other hand the increasing anion size and concentration produce an increase in the friction/entanglements of the polymeric segments which lowers even more the reduced segmental motion of the crosslinked polymer and decrease the dianion contribution to the overall ionic conductivity. DFT modeling of the same TFSI-based dianionic dilithium salts reveals that the reason for the trend observed is due to the variation in ion dissociation enthalpy, derived from minimum-energy structures, with respect to perfluoroalkylene chain length.

Solar photoelectrochemical synthesis of electrolyte-free H2O2 aqueous solution without needing electrical bias and H2

2021 ◽  
Author(s):  
Tae Hwa Jeon ◽  
Bupmo Kim ◽  
Chuhyung Kim ◽  
Chuan Xia ◽  
Haotian Wang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Polymer Electrolytes ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
External Bias ◽  
Electrical Bias

An external bias-free photoelectrochemical system containing solid polymer electrolytes achieves efficient and durable synthesis of pure (electrolyte-free) aqueous H2O2 solution.

scholarly journals Thermal and Electrochemical Properties of Solid Polymer Electrolytes Prepared via Lithium Salt-Catalyzed Epoxide Ring Opening Polymerization

2021 ◽  
Vol 11 (4) ◽  
pp. 1561
Author(s):  
Gabrielle Foran ◽  
Nina Verdier ◽  
David Lepage ◽  
Arnaud Prébé ◽  
David Aymé-Perrot ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Polymer Electrolytes ◽  
Ring Opening ◽  
Lithium Salt ◽  
Ring Opening Polymerization ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Polymerization Reaction ◽  
Epoxide Ring ◽  
Epoxide Ring Opening

Solid polymer electrolytes have been widely proposed for use in all solid-state lithium batteries. Advantages of polymer electrolytes over liquid and ceramic electrolytes include their flexibility, tunability and easy processability. An additional benefit of using some types of polymers for electrolytes is that they can be processed without the use of solvents. An example of polymers that are compatible with solvent-free processing is epoxide-containing precursors that can form films via the lithium salt-catalyzed epoxide ring opening polymerization reaction. Many polymers with epoxide functional groups are liquid under ambient conditions and can be used to directly dissolve lithium salts, allowing the reaction to be performed in a single reaction vessel under mild conditions. The existence of a variety of epoxide-containing polymers opens the possibility for significant customization of the resultant films. This review discusses several varieties of epoxide-based polymer electrolytes (polyethylene, silicone-based, amine and plasticizer-containing) and to compare them based on their thermal and electrochemical properties.

Impact of negative charge delocalization on the properties of solid polymer electrolytes

2021 ◽  
Author(s):  
Heng Zhang ◽  
Ziyu Song ◽  
Weimin Yuan ◽  
Wenfang Feng ◽  
Jin Nie ◽  
...  
Keyword(s):  
Polymer Electrolytes ◽  
Negative Charge ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Charge Delocalization
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