Structural, thermal, and electrochemical studies of biodegradable gel polymer electrolyte for electric double layer capacitor

Chaurasia, Sujeet Kumar; Sharma, Atul Kumar; Singh, Pramod K.; Lu, Li; Ni, Jiangfeng; Savilov, Serguei V.; Кузнецов, А. П.; Polu, Anji Reddy; Singh, Abhijeet; Singh, Manoj K.

doi:10.1177/09540083221101757

Cited by 4 publications

(3 citation statements)

References 51 publications

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“…This behavior is consistent with the results reported in previous literature. 16,17 The presence of quasi-rectangular plot shape in the CV plot implies excellent capacitive behavior and propagation of fast charge. 18,19 Hence, the shape of the plot is an indication of the capacitive behaviour of ionogel.…”

Section: Resultsmentioning

confidence: 99%

Study of Capacitive Behavior and its Inter-Relationship with Electrolyte Solution Concentration in Hybrid Ionogels

Suen,

Elumalai,

Debnath

et al. 2023

ECS J. Solid State Sci. Technol.

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Ionogels are synthesized by confining ionic liquids within a solid/polymer matrix. Ionogels received wide attention owing to their high ionic conductivity and mechanical properties. Recent research has revolved around augmenting the ionic conductivity and mechanical stability of ionogel. Nevertheless, a detailed understanding of the inherent capacitive behavior is indispensable to ensure the application of ionogels in rechargeable lithium-ion batteries, sensors, and supercapacitors. Even though studies on the cyclic voltammetry of ionogels have been previously established, there are limited studies on evaluating the specific capacitance of ionogel, with respect to the amount of electrolyte solution present in the ionogel system. In this study, the ionogel is fabricated through sol-gel route, and the charge storage capacity of ionogel is investigated with varying concentrations of electrolyte solution. Electrochemical Methods such as Linear Sweep Voltammetry (LSV) and cyclic voltammetry (CV) are used to characterize the electrochemical performance of ionogel. The most effective concentration of electrolyte solution is determined to be 30 vol% in this study and has attained high electrochemical stability, up to 3.2 V. The ionogel has excellent charge-discharge characteristics, with a specific capacitance of ∼18.90 F g−1. Meanwhile, the ionogel also exhibits good thermal stability, 358 °C. The combination of promising electrochemical properties and thermal sability allows the practical application of ionogel.

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Section: Resultsmentioning

confidence: 99%

Study of Capacitive Behavior and its Inter-Relationship with Electrolyte Solution Concentration in Hybrid Ionogels

Suen,

Elumalai,

Debnath

et al. 2023

ECS J. Solid State Sci. Technol.

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“…This is an important issue to consider in LIBs production in relatively humid regions such as Indonesia. Thus, cellulose acetate is widely used as a raw material in various membrane applications, such as reverse osmosis, ultrafiltration, microfiltration, adsorption membranes, gas separation, and ion exchange membranes (Chaurasia et al, 2022;Hu et al, 2020;Wang et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Unveiling frequency-dependent dielectric behavior of cellulose-based polymer electrolyte at various temperature and salt concentration

Ratri

Sabrina²,

Lestariningsih³

et al. 2023

Int. J. Renew. Energy Dev.

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Dielectric behavior of cellulose-based polymer electrolyte was studied at various temperature and salt concentration. A polymer electrolyte membrane based on cellulose acetate (CA) as the polymer host and LiClO4 as the dopant salt was fabricated using the solution casting technique. The dopant salt concentration was varied as 0.3, 0.5, 0.67, and 1M. Dielectric relaxation spectroscopy characterization were performed using potentiostat at frequency ranging from 0.1 Hz to 1 MHz. Measurements were performed by sandwiching the membrane between stainless steel plates. The ionic conductivity was then calculated based on the Cole–Cole plot obtained from the impedance measurement. It was found that sample 1 M had the highest ionic conductivity at high frequencies. However, the frequency-dependent conductance plot showed that the ionic conductivity of the 1 M sample significantly decreased at low frequencies, i.e. from 3.41×10-5 S/cm at 1 MHz to 1.9×10-8 S/cm at 0.1 Hz. Other samples did not experience this phenomenon, including those with a Celgard© commercial membrane to represent commercial Li-ion batteries. This is caused by excess charge accumulation, leading to a high concentration of immobile charge carriers, which reduces the available free volume surrounding the polymer chain. This resulted in a significant decrease in ionic conductivity at low frequencies. Temperature variation was also performed on the conductivity measurement at 30-70 °C. Temperature variation showed more predictable behavior, where increasing the temperature activated charge carriers and enhanced ionic conductivity, from 1.81×10-5 S/cm at room temperature to 9.04×10-5 at 70°C. Sweeping across the frequency range results in a consistent sequence of ionic conductivities among the samples at various temperatures. This work is beneficial for evaluating a biomass-based polymer electrolyte complex in a Li-ion battery environment. Feasibility studies can be performed at various concentrations and temperatures to determine the optimal level of dopant salt input across a broad frequency range.

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“…Unlike lignin and chitosan, cellulose is a potential biopolymer candidate to replace petropolymers because it can be extracted from natural sources without risking food competition. Cellulose acetate is widely used as a polymer matrix owing to its outstanding performance [14,15].…”

Section: Introductionmentioning

confidence: 99%

Green Synthesis of Citric Acid-Crosslinked Cellulose Acetate Membrane for Polymer Electrolyte

Ratri,

Pambudi,

Arundati

et al. 2023

MSF

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Safer alternative for lithium-ion battery containing liquid electrolyte was proposed using solid polymer electrolyte as a combo separator/electrolyte. In this work, cellulose acetate (CA) was used to replace fossil-based polymer as battery separator. To further promote sustainable membrane fabrication, dimethylsulfoxide (DMSO) and citric acid was used as solvent and cross-linking agent, respectively. Branched polyethyleneimine (bPEI) was also incorporated in the polymer electrolyte complex to promote electrolyte salt dissociation within the matrix. Crosslinking of CA-bPEI using citric acid showed promising properties compared to unmodified CA membrane. Better thermal stability and lower crystallinity were seen in the modified CA membrane, resulting in better ionic conductivity.

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Structural, thermal, and electrochemical studies of biodegradable gel polymer electrolyte for electric double layer capacitor

Cited by 4 publications

References 51 publications

Study of Capacitive Behavior and its Inter-Relationship with Electrolyte Solution Concentration in Hybrid Ionogels

Study of Capacitive Behavior and its Inter-Relationship with Electrolyte Solution Concentration in Hybrid Ionogels

Unveiling frequency-dependent dielectric behavior of cellulose-based polymer electrolyte at various temperature and salt concentration

Green Synthesis of Citric Acid-Crosslinked Cellulose Acetate Membrane for Polymer Electrolyte

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