Effect of blending of PMMA on PVdF-HFP + NaCF3SO3-EC-PC gel polymer electrolyte

Mishra, Kuldeep; Garg, Ayush; Sharma, Rakesh K.; Gautam, Raghubir; Pundir, S. S.

doi:10.1016/j.matpr.2019.03.106

Cited by 18 publications

(12 citation statements)

References 18 publications

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“…This is in agreement with the FESEM results discussed in Figure 4e,f where a substantial increase in the concentration of white granules was de- From the plots in Figure 9, the resistance at the high frequency region is obtained from the intercepts on the x-axis of the complex EIS plots. This resistance is known as the bulk resistance (R b ) [27,51]. The x-axis intercept from the high frequency reveals the bulk properties of the electrolytes [47].…”

Section: Resistancementioning

confidence: 99%

Optimization of the Electrochemical Performance of a Composite Polymer Electrolyte Based on PVA-K2CO3-SiO2 Composite

et al. 2020

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Composite polymer electrolyte (CPE) based on polyvinyl alcohol (PVA) polymer, potassium carbonate (K2CO3) salt, and silica (SiO2) filler was investigated and optimized in this study for improved ionic conductivity and potential window for use in electrochemical devices. Various quantities of SiO2 in wt.% were incorporated into PVA-K2CO3 complex to prepare the CPEs. To study the effect of SiO2 on PVA-K2CO3 composites, the developed electrolytes were characterized for their chemical structure (FTIR), morphology (FESEM), thermal stabilities (TGA), glass transition temperature (differential scanning calorimetry (DSC)), ionic conductivity using electrochemical impedance spectroscopy (EIS), and potential window using linear sweep voltammetry (LSV). Physicochemical characterization results based on thermal and structural analysis indicated that the addition of SiO2 enhanced the amorphous region of the PVA-K2CO3 composites which enhanced the dissociation of the K2CO3 salt into K+ and CO32− and thus resulting in an increase of the ionic conduction of the electrolyte. An optimum ionic conductivity of 3.25 × 10−4 and 7.86 × 10−3 mScm−1 at ambient temperature and at 373.15 K, respectively, at a potential window of 3.35 V was observed at a composition of 15 wt.% SiO2. From FESEM micrographs, the white granules and aggregate seen on the surface of the samples confirm that SiO2 particles have been successfully dispersed into the PVA-K2CO3 matrix. The observed ionic conductivity increased linearly with increase in temperature confirming the electrolyte as temperature-dependent. Based on the observed performance, it can be concluded that the CPEs based on PVA-K2CO3-SiO2 composites could serve as promising candidate for portable and flexible next generation energy storage devices.

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Section: Resistancementioning

confidence: 99%

Optimization of the Electrochemical Performance of a Composite Polymer Electrolyte Based on PVA-K2CO3-SiO2 Composite

et al. 2020

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“…Another research performed by Shukur, Ithnin [24] used NH4NO3 as the ionic dopant but focusing on chitosanestarch blended biopolymer electrolyte and managed to improve the ionic conductivity to 1.02 Â 10 À4 S/cm when added with EC. Meanwhile, Mishra, Garg [25] also carried out polymer blending based on PMMA-PVdF that incorporated a binary mixture of EC and PC as plasticizers and obtained a conductivity value of 7.50 Â 10 À4 S/cm. This proves that plasticization can be considered as one of the most promising approach in the enhancement of ionic conductivity of polymer complexes as the optimization could achieve value ranges from ~10 to 4 to ~10-3 S/cm.…”

Section: Introductionmentioning

confidence: 99%

Enhancement on protonation (H+) with incorporation of flexible ethylene carbonate in CMC–PVA–30 wt % NH4NO3 film

Saadiah

Nagao

Samsudin

2021

International Journal of Hydrogen Energy

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“…The semicircle shown in the high-frequency region indicates double-layer capacitance at the electrode–electrolyte interface owing to the ion migration, whereas the low-frequency spike was ascribed to the ion absorption, which indicates the capacitive nature of the electrolytes [ 50 ]. Nevertheless, it could be observed that the semicircle of the samples decreased with the successful incorporation of ZnO-NPs, which is attributed to a rise in the amorphous phase within the polymer, as well as due to the low T g value, which leads to an increase in the electrochemical performance of the electrolytes [ 43 , 51 ]. The narrow semicircles with a tilted spike in the low- and high-frequency region in the Cole–Cole plots indicate that the samples contain mainly contain the resistive component [ 51 ].…”

Section: Resultsmentioning

confidence: 99%

“…Nevertheless, it could be observed that the semicircle of the samples decreased with the successful incorporation of ZnO-NPs, which is attributed to a rise in the amorphous phase within the polymer, as well as due to the low T g value, which leads to an increase in the electrochemical performance of the electrolytes [ 43 , 51 ]. The narrow semicircles with a tilted spike in the low- and high-frequency region in the Cole–Cole plots indicate that the samples contain mainly contain the resistive component [ 51 ]. The resistance is calculated from intercepts on the x-axis of the complex impedance plots.…”

Section: Resultsmentioning

confidence: 99%

“…The transportation of ions in the amorphous region is expected to be faster than in the crystalline region, and this could be linked to the poor arrangement of macromolecules in the amorphous region. The SPEs can produce faster ionic motion in the amorphous region that results in better conductivity for the electrolyte [ 51 ]. ZnO-NPs, as an important nanofiller, aid in flagging the coordinative bond between H and the weakly bonded -OH of the polymer.…”

Section: Resultsmentioning

confidence: 99%

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Effect of ZnO Nanofiller on Structural and Electrochemical Performance Improvement of Solid Polymer Electrolytes Based on Polyvinyl Alcohol–Cellulose Acetate–Potassium Carbonate Composites

et al. 2022

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In this study, a solution casting method was used to prepare solid polymer electrolytes (SPEs) based on a polymer blend comprising polyvinyl alcohol (PVA), cellulose acetate (CA), and potassium carbonate (K2CO3) as a conducting salt, and zinc oxide nanoparticles (ZnO-NPs) as a nanofiller. The prepared electrolytes were physicochemically and electrochemically characterized, and their semi-crystalline nature was established using XRD and FESEM. The addition of ZnO to the polymer–salt combination resulted in a substantial increase in ionic conductivity, which was investigated using impedance analysis. The size of the semicircles in the Cole–Cole plots shrank as the amount of nanofiller increased, showing a decrease in bulk resistance that might be ascribed to an increase in ions due to the strong action of the ZnO-NPs. The sample with 10 wt % ZnO-NPs was found to produce the highest ionic conductivity, potential window, and lowest activation energy (Ea) of 3.70 × 10–3 Scm–1, 3.24 V, and 6.08 × 10–4 eV, respectively. The temperature–frequency dependence of conductivity was found to approximately follow the Arrhenius model, which established that the electrolytes in this study are thermally activated. Hence, it can be concluded that, based on the improved conductivity observed, SPEs based on a PVA-CA-K2CO3/ZnO-NPs composite could be applicable in all-solid-state energy storage devices.

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Effect of blending of PMMA on PVdF-HFP + NaCF3SO3-EC-PC gel polymer electrolyte

Cited by 18 publications

References 18 publications

Optimization of the Electrochemical Performance of a Composite Polymer Electrolyte Based on PVA-K2CO3-SiO2 Composite

Optimization of the Electrochemical Performance of a Composite Polymer Electrolyte Based on PVA-K2CO3-SiO2 Composite

Enhancement on protonation (H+) with incorporation of flexible ethylene carbonate in CMC–PVA–30 wt % NH4NO3 film

Effect of ZnO Nanofiller on Structural and Electrochemical Performance Improvement of Solid Polymer Electrolytes Based on Polyvinyl Alcohol–Cellulose Acetate–Potassium Carbonate Composites

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