A Promising Polymer Blend Electrolytes Based on Chitosan: Methyl Cellulose for EDLC Application with High Specific Capacitance and Energy Density.
TL;DR: It was found that the studied samples exhibit a very good performance as electrolyte for EDLC applications, and Ions were found to be the dominant charge carriers in the polymer electrolyte.
read more
Abstract: In the present work, promising proton conducting solid polymer blend electrolytes (SPBEs) composed of chitosan (CS) and methylcellulose (MC) were prepared for electrochemical double-layer capacitor (EDLC) application with a high specific capacitance and energy density. The change in intensity and the broad nature of the XRD pattern of doped samples compared to pure CS:MC system evidencedthe amorphous character of the electrolyte samples. The morphology of the samples in FESEM images supported the amorphous behavior of the solid electrolyte films. The results of impedance and Bode plotindicate that the bulk resistance decreasedwith increasing salt concentration. The highest DC conductivity was found to be 2.81 × 10-3 S/cm. The electrical equivalent circuit (EEC) model was conducted for selected samples to explain the complete picture of the electrical properties.The performance of EDLC cells was examined at room temperature by electrochemical techniques, such as impedance spectroscopy, cyclic voltammetry (CV) and constant current charge-discharge techniques. It was found that the studied samples exhibit a very good performance as electrolyte for EDLC applications. Ions were found to be the dominant charge carriers in the polymer electrolyte. The ion transference number (tion) was found to be 0.84 while 0.16 for electron transference number (tel). Through investigation of linear sweep voltammetry (LSV), the CS:MC:NH4SCN system was found to be electrochemically stable up to 1.8 V. The CV plot revealed no redox peak, indicating the occurrence of charge double-layer at the surface of activated carbon electrodes. Specific capacitance (Cspe) for the fabricated EDLC was calculated using CV plot and charge-discharge analyses. It was found to be 66.3 F g-1 and 69.9 F g-1 (at thefirst cycle), respectively. Equivalent series resistance (Resr) of the EDLC was also identified, ranging from 50.0 to 150.0 Ω. Finally, energy density (Ed) was stabilized to anaverage of 8.63 Wh kg-1 from the 10th cycle to the 100th cycle. The first cycle obtained power density (Pd) of 1666.6 W kg-1 and then itdropped to 747.0 W kg-1 at the 50th cycle and continued to drop to 555.5 W kg-1 as the EDLC completed 100 cycles.
read more
Chat with Paper
AI Agents for this Paper
Find similar papers on Google Scholar, PubMed and Arxiv
Write a critical review of this paper
Analyze citations of this paper to find unaddressed research gaps
Citations
Impedance, structural and thermal analyses of polyvinyl alcohol/polyvinyl pyrrolidone blend incorporated with Li+ ions for lithium-ion batteries
TL;DR: In this article, the electrical conduction mechanism inside the samples was interpreted using the Jonscher's double power law and activation energy was calculated using Coats-Redfern and Broido models.
35
Plasticized Sodium-Ion Conducting PVA Based Polymer Electrolyte for Electrochemical Energy Storage-EEC Modeling, Transport Properties, and Charge-Discharge Characteristics.
Shujahadeen B. Aziz,Muaffaq M. Nofal,Rebar T. Abdulwahid,Hewa O. Ghareeb,Elham M. A. Dannoun,Ranjdar M. Abdullah,M. H. Hamsan,Mohd F. Z. Kadir +7 more
TL;DR: In this paper, the preparation of plasticized polymer electrolytes based on polyvinyl alcohol (PVA) via solution cast technique was presented for the fabrication of electrical double-layer capacitors (EDLCs).
33
Potential applications of polycarbohydrates, lignin, proteins, polyacids, and other renewable materials for the formulation of green elastomers
TL;DR: Structures, viability, interactions, properties, and use of most common natural polycarbohydrates, lignin, and proteins for elastomer modification are extensively reviewed and sustainability analysis of green elastomers is accomplished to elaborate their cost-effectiveness and environmental friendliness.
32
Fabrication of cellulose acetate-chitosan based flexible 3D scaffold-like porous membrane for supercapacitor applications with PVA gel electrolyte
TL;DR: In this article, a tri-hybrid of rGO/NiO/Fe3O4 (rNF) particles was used for the preparation of porous bio-based matrix with a view to fabricating the environment-friendly supercapacitors from two sustainable materials, cellulose acetate (CA) and chitosan (CS).
32
Optimization of the Electrochemical Performance of a Composite Polymer Electrolyte Based on PVA-K2CO3-SiO2 Composite
Bashir Abubakar Abdulkadir,John Ojur Dennis,Yas Al-Hadeethi,M. F. Shukur,E.M. Mkawi,Nuha Al-Harbi,K.H. Ibnaouf,O. Aldaghri,Fahad Usman,Abdullahi Abbas Adam +9 more
TL;DR: In this article, a composite polymer electrolyte based on polyvinyl alcohol (PVA) polymer, potassium carbonate (K2CO3) salt, and silica (SiO2) filler was investigated and optimized for improved ionic conductivity and potential window for use in electrochemical devices.
32
References
Carbon materials for electrochemical capacitors
TL;DR: In this paper, the carbon materials used for electrochemical capacitors were reviewed and discussed the contribution of the surfaces owing to micropores and other larger pores to the capacitance and rate performance of the electric double-layer capacitors.
1.3K
A review on recent advances in hybrid supercapacitors: Design, fabrication and applications
TL;DR: In this article, a review article gives an overview of recent advances in the development of hybrid supercapacitors, storage mechanism, criteria of formation, components, different electrode and electrolyte materials, electrochemical profile assessment, design fabrication and their applications.
1.3K
A Brief Review on Electrode Materials for Supercapacitor
TL;DR: In this paper, the storage principle and characteristics of electrode materials such as carbon based materials, metal oxides and conducting polymers in supercapacitors have been reported, and the performance of super-capacitor relies on factors such as electrochemical properties of electrodes used, electrolyte and voltage range.
807
Water absorption and states of water in semicrystalline poly(vinyl alcohol) films
TL;DR: In this paper, wide angle X-ray studies indicate that diffusion of water into semicrystalline samples of the polymer gradually destroys the crystalline regions of the polyvinyl alcohol, although water is found to not inhabit intact crystallites.
727
Promising Routes to a High Li+ Transference Number Electrolyte for Lithium Ion Batteries
Kyle M. Diederichsen,Kyle M. Diederichsen,Eric J. McShane,Eric J. McShane,Bryan D. McCloskey,Bryan D. McCloskey +5 more
TL;DR: In this paper, the authors highlight an often less noted route to improving energy density: increasing the Li+ transference number of the electrolyte, and demonstrate that electrolytes with modestly higher transference numbers compared to traditional carbonate-based liquid electrolytes would allow higher power densities and enable faster charging, even if their conductivity was substantially lower than that of conventional electrolytes.
706