Sodium Acetate Trihydrate Research Articles

Decolorization of Synthetic Azo Dyes under Anaerobic Condition in A Continuous Stirred Tank Reactor

Biological treatment for textile wastewater always has a limitation in term of time of reaction and uncertainty along the process. This study focused on the decolorization of synthetic azo dyes in batch reactors with controlled thermotolerant anaerobic conditions. Less-volatile digested sludge collected from a palm oil biogas reactor was used as the organic biodegradation agent for azo dyes. Digested sludge contains high amounts of microbes with uncertain species viable for decolorization purposes. Sodium acetate trihydrate (C2H9NaO5) was used as carbon source and mixed with a specific composition of minimum salt media (MSM) in batch reactors as an additional nutrient. Digested sludge both in mesophilic (35°C) and thermophilic (55°C) conditions were found to be capable of decolorizing 100, 200 and 300 ppm of three types of azo dyes: Reactive Green 19 (45.56%, 69.73%; 63%, 73.49%; 70.02%, 75.92%), Reactive Orange 16 (46.08%, 78.4%; 64.21%, 85.52%; 74.95%, 85.91%) and Reactive Red 120 (29.11%, 85.32%; 63.35%, 87.69%; 72.02%, 89.5%) respectively after 7 days incubation time. Statistical analysis also showed that the anaerobic thermophilic conditions had significantly accelerated the decolorization process. The anaerobic thermophilic environment will be a good factor to include in future textile wastewater treatment plants.

Lamellar-structured phase change composites based on biomass-derived carbonaceous sheets and sodium acetate trihydrate for high-efficient solar photothermal energy harvest

Inorganic salt hydrates have a great potential for solar photothermal energy storage due to their high energy-storage density and low cost. However, there are some major drawbacks such as high supercooling degree, shape/form instability, phase segregation, and poor long-term durability found in salt hydrates. These greatly limit their practical applications. Herein, we designed and fabricated a type of eco-friendly and cost-efficient phase-change system based on sodium acetate trihydrate (SAT) as an inorganic phase change material and biomass-derived carbonaceous sheets (BDCSs) as a supporting material for high-efficient solar photothermal energy storage and shape stabilization. Derived from a biomass waste of watermelon rind, the BDCSs show some unique characteristics such as a stacking lamellar structure and a compact surface with some corrugations and ripples as well as the presence of abundant oxygen-rich groups. These can lead to a significant enhancement in photothermal conversion efficiency of solar energy when used as a supporting material for a SAT-based phase-change composite system. This type of composite system not only presents a high thermal energy capacity of 212.2 J/g and a very low supercooling degree of 0.9 °C, but also has a high photothermal conversion efficiency of up to 80.18% for solar energy. Moreover, the composite system exhibits high thermal conductance, good shape stability without phase segregation, and excellent thermal cycle stability for long-term solar photothermal energy storage and release. This study provides a simple and facile methodology for the development of bio-based phase-change composites for high-efficient solar energy utilization. • Biomass-derived carbonaceous sheets (BDCSs) were obtained from watermelon rind. • BDCSs exhibit a stacking lamellar structure with rich oxygen groups on their surface. • BDCSs/sodium acetate trihydrate composites were fabricated for solar photothermal energy harvest. • This type of phase-change composite system has high photothermal conversion efficiency. • This composite system reveals enhanced thermal conductance and reduced supercooling.

Enhanced thermal energy storage performance of salt hydrate phase change material: Effect of cellulose nanofibril and graphene nanoplatelet

Thermal energy storage (TES) has attracted intense attention because of its positive contribution to sustainable energy utilization. To improve the TES performance of sodium acetate trihydrate (SAT), the combined use of cellulose nanofibril (CNF) and graphene nanoplatelet (GNP) was investigated to tackle the phase separation problem and to improve the thermal conductivity of SAT. Phase stability and rheology tests revealed that adding 0.8% of CNF to SAT increased viscosity, enhanced solid-like rheological behavior, and successfully eliminated phase separation. Meanwhile, the amphiphilicity of CNF facilitated the dispersion of GNP. Sodium phosphate dibasic dodecahydrate (DSP; Na2HPO4·12H2O) was selected as the nucleating agent, which reduced the supercooling degree of SAT to 2.1 °C. Phase change materials (PCMs) were prepared by simply blending GNP pre-dispersed with CNF, DSP, and SAT. Due to the excellent thermal performance of GNP and its good dispersion by CNF, the prepared PCM composites showed enhanced thermal conductivity compared with that of pure SAT. Thermal reliability testing indicated that the melting point and enthalpy of the prepared PCM composites decreased after 100 melting/freezing cycles. Overall, PCM composites with enhanced performance were fabricated based on renewable, bio-based, and biodegradable nanocellulose. These composites can be used for certain TES applications.

Experimental investigation on discharging characteristics of supercooled CH3COONa·3H2O-Na2S2O3·5H2O mixtures triggered by local cooling with Peltier effect

Latent heat stored in the supercooled salt hydrate liquid can be released at the desired time by triggered crystallization. In this paper, the melted sodium acetate trihydrate (SAT, melting point Tm = 55.7 °C) and sodium thiosulfate pentahydrate (STP, Tm = 48.9 °C) are cooled by natural convection of room air with respective supercooling degrees of 33 °C and 28 °C. Experiments are performed on the effect of local cooling by semiconductor refrigerator on triggering crystallization of supercooled SAT, STP and their binary mixtures with different mass ratios. The results show that SAT has higher discharging temperature and longer discharging time than STP; but STP has less phase separation, better cycling stability and shorter induction period during the crystallization than SAT after repeated melting-freezing cycles. Moreover, the phase separation problem of SAT could be significantly alleviated with the addition of STP. With the increase of SAT content in the SAT-STP mixtures, the induction period during the crystallization tends to firstly increase and then decrease. The tested curve of the maximum discharging temperatures presents as a V-shaped trend and roughly corresponds with the binary phase diagram. The eutectic mixture of SAT-STP (mSAT:mSTP = 28:72, the eutectic temperature of 40.8 °C) can be triggered in 4 min and shows a discharging temperature peak measured at 39 °C. The discharging time of 3.3 h with temperature above 30 °C is longer than that of single-component salt hydrates. The obtained results are helpful for system design and practical application of solar energy storage based on supercooled phase change materials.

Use of cellulose nanofibril (CNF)/silver nanoparticles (AgNPs) composite in salt hydrate phase change material for efficient thermal energy storage

Salt hydrate phase change materials (PCMs) possess the challenge of supercooling, which must be addressed to allow more efficient energy storage and utilisation. In this work, cellulose nanofibril (CNF), a versatile biopolymer was used to support and disperse silver nanoparticles (AgNPs), and the synthesised CNF/AgNPs composite was used to improve the performance of sodium acetate trihydrate (SAT). Results showed that CNF dispersed the AgNPs uniformly and prevented their aggregation. Through the synergistic effect of 1% CNF/AgNPs and 2% sodium phosphate dibasic dodecahydrate, a low supercooling degree of 1.2 °C was achieved. Moreover, AgNPs were uniformly distributed in the prepared PCM composite. Differential scanning calorimetry results indicated that the prepared PCM@CNF/AgNPs 0.02 composite showed a similar melting point (57.4 °C) and enthalpy (269 kJ/kg), compared to those of pure SAT. Thermogravimetric analysis showed that the PCM composite did not lose all moisture until a heating temperature of 160 °C, showing improved thermal stability. The thermal conductivity of PCM@CNF/AgNPs 0.02 composite was 31.6% higher than that of SAT. The enthalpy of this composite decreased only around 2% after 100 melting/freezing cycles, showing satisfying thermal reliability. This composite can therefore be used to fabricate high-performance TES systems with negligible supercooling and improved thermal properties.

Thermal characteristics of a long-term heat storage unit with sodium acetate trihydrate

Energy storage is a key technology to provide stable renewable energy supply to buildings. Latent heat energy storage system is a promising technique for domestic thermal energy storage systems due to its high thermal energy storage density and the ability to store heat for both short and long periods. The common domestic heat storage accumulators are designed for short-term storage, where heat can’t be stored for a long time. In this experiment investigation, a latent heat storage with 75 L water and 137.8 kg phase change material is tested. Sodium acetate trihydrate based composite with stable supercooling ability is used as the phase change material. The sensible heat of the storage is used for short-term heat storage, the latent heat is for long-term heat storage. The combination of short-term heat storage and long-term heat storage is attractive for heating systems with variable heat supply. In this experiment, thermal power and heat exchange capacity rates of the heat storage were analyzed. The stable supercooling success rate and hence the long-term heat storage was also investigated. The results showed that, under the test conditions, 21.7 kWh heat was stored in the tank during charging, 14.0 kWh heat was released during discharging of the sensible heat (short-term heat storage) and 7.6 kWh heat was discharged during discharging of the latent heat (long-term heat storage). The sodium acetate trihydrate remained stable supercooled in 66% of the test cycles. The storage had a relatively high heat exchange capacity rate of at least 340 W/K during charging.

Influence of Water Addition on the Latent Heat Degradation of Sodium Acetate Trihydrate

To promote the development of thermal energy storage (TES), the sodium acetate trihydrate (SAT) presents interesting thermal properties. However, this material may suffer from aging throughout thermal cycles. Various solutions were explored in the literature to limit this aging, mainly based on the use of additives such as water. In this study, two samples were prepared. The first one consisted of raw SAT material whereas 3 wt.% of supplementary water has been added to the second one. They were then poured into 350 cm3 bricks, which were placed in an experimental test bench. After 35 cycles between 20 and 70 °C, a drop of about 10% of the latent heat was observed for the first sample. This behavior was like the literature data. For the second sample, the decrease of latent heat was more rapid (about 30%). Contrary to our expectations, the water addition seems not beneficial for the improvement of thermal stability. Interestingly, we noticed that the drop of the latent heat was fully reversible after sample stirring. This degradation might not be related to a thermal destructive mechanism but rather to a global segregation phenomenon. This segregation may be due to the breaking of hydrogen bonding between anhydrous sodium acetate and water, resulting in the separation of the two species.

Crystallisation studies of sodium acetate trihydrate – suppression of incongruent melting and sub-cooling to produce a reliable, high-performance phase-change material

Polymer additives reliably prevent incongruent melting of sodium acetate trihydrate when temperature-cycled over multiple thousands of melting and freezing cycles.

Excellent Thermophysical Properties of Salt Hydrate Phase-Change Material for Thermal Storage Systems

The demand for space heating and domestic hot water has caused an increase in building-energy consumption and severely constrains the electricity infrastructure. Herein, we developed the tailor-made sodium acetate trihydrate (SAT, salt hydrate phase change material) as the thermal storage media for thermal energy storage systems, which could effectively solve the mismatch between heat supply and demand. Multi-wall carbon nanotubes (MWCNTs) was employed as the nucleation agent of SAT, while other carbon-based materials, including carbon fiber, expanded graphite, and graphene nanoplates, were synergistically used as thermal conductivity and photothermal conversion enhancers. Ammonium chloride (NH4Cl) was innovatively adopted as a phase-change temperature regulator for SAT. The results showed that the supercooling degree of SAT decreased to 0.9 °C with the presence of MWCNTs. The thermal conductivity of SAT improved by 54.9%, and the photothermal conversion efficiency increased to 89.3% after integrating MWCNTs and GNPs into the SAT composite. Furthermore, the phase-change temperature of the SAT/MWCNTs composite, ranged from 57.5 ° C to 45.1 °C, could be prepared by adjusting NH4Cl contents for satisfying different application scenarios. Our results indicate that the prepared SAT composites with a latent heat of 250.2 J/g can be potentially used in different thermal energy storage systems.

Sodium acetate trihydrate-based composite phase change material with enhanced thermal performance for energy storage

Sodium acetate trihydrate (CH3COONa·3H2O, SAT), as the medium-low temperature phase change material (PCM), has been broadly utilized in thermal energy storage system. The specific objective of this study was to develop a new SAT-based composite PCM (CPCM) in order to restrain the supercooling and phase segregation of pure SAT. In this dissertation, SAT-CN/Nano-Cu was synthesized by adding carboxymethyl cellulose (CMC), sodium chloride (NaCl) and Nano-copper (Nano-Cu). The experimental results manifest that CMC is resultful to constrain phase separation of pure SAT. Supercooling degree of pure SAT is reduced from 30°C to less than 5°C by the addition of varying NaCl content. The Nano-Cu was furnished to further prevent the supercooling phenomenon of CPCM as well as intensify the heat transfer characteristics of pure SAT. Thermal properties containing thermal conductivity, latent heat and specific heat capacity were systematically analyzed using DSC and thermal properties analyzer. The analysis results demonstrate that a satisfactory thermal conductivity, high latent heat and inclusive of an appropriate specific heat capacity are achieved by the SAT-CN/Nano-Cu. In short, this work reported optimum CPCM consisted of SAT, 3 wt% CMC, 4 wt% NaCl and 0.8 wt% Nano-Cu that possesses superior phase change performance. Additionally, admirable thermal stability is retained by the CPCM.

Supramolecular effect of acetate on chitin gelling medium: Structural properties and protein interaction

In this work, the influence of Sodium Acetate Trihydrate (SAT) on the gelling stage of a chitin hydrogel was studied. Characterization techniques, such as FTIR, Raman, solid-state NMR, Dielectric Spectroscopy, Small-angle X-ray scattering (SAXS), Wide-angle X-ray scattering (WAXS), and X-ray diffraction (XRD) were used to study the effect of SAT on the micro and nanostructure of the material in the wet, dry and freeze-dried states. It was demonstrated that the amount of SAT in the gelling solution can induce a variation in the supramolecular interaction among the polysaccharide chains, which leads to a change in the structural characteristics. In addition, it was observed that the polymer-water interactions are also altered by this structural ordering. Also, the affinity interaction with lysozyme was evaluated and an influence on the adsorption capacity was evidenced with the use of SAT. This could be an advance for biotechnological, biomedical, and food applications.

Experimental and numerical research on thermal performance of a novel thermal energy storage unit with phase change material

This study experimentally and numerically investigates the thermal performance of a novel spiral-tube heat exchanger latent heat thermal energy storage unit. The shell side of the heat exchanger was filled with sodium acetate trihydrate (SAT) as the energy storage medium. Water was the heat transfer fluid (HTF) and flowed into the spiral tubes to charge or discharge the system. The outlet temperature of water, working power and energy of the system as well as the heat transfer coefficient and heat transfer area, were estimated to evaluate the thermal performance of this energy storage unit. The experimental analyses revealed that the recovered energy of the system during the discharging process ranged from 12.67 to 15.23 MJ with an average power higher than 2 kW for most of the process. The heat transfer coefficient and heat transfer area ranged from 72 W/K to 83 W/K for flow rates of 100 L/h to 500 L/h. Further, a numerical model was built and validated to investigate the phase change behavior more intuitively. The novel energy storage unit has the advantages of having a compact structure and multi-stream heat transfer capacity, which can offer a high heat transfer area per unit volume and ensure heat exchange of multiple working fluids.

Energy and Exergy Analysis of a Multi-PCM Solar Storage System

Latent heat storage using phase change materials (PCMs) is one of the most effective methods to store solar energy, and it can significantly reduce area for solar collectors. PCMs are isothermal in nature, and thus offer higher density energy storage and the ability to operate in a variable range of temperature conditions. In this paper, experimental study has been conducted to evaluate the effectiveness of the solar thermal storage system based on the energy and exergy analysis. Barium Hydroxide Octahydrate (BHO) and Sodium Acetate Trihydrate (SAT) were used as PCMs inside multi-capsule system arranged in series based on their melting temperatures. These two salts never being used together in a multi capsule solar storage system before. The capsules were charged by three water flow rates of 0.5 LPM, 1 LPM and 1.5 LPM that comes from a parabolic trough collector. The experimental results showed that the maximum energy and exergy storage of 139.38 kJ and 17.15 kJ, respectively were obtained from 1 LPM. In other hand, the maximum system energy and exergy efficiencies of 64.82 % and 14.99 %, respectively were obtained from the use of 1.5 LPM.

SELECTION OF PHASE CHANGE MATERIAL FOR DOMESTIC WATER HEATING USING MULTI CRITERIA DECISION APPROACH

ABSTRACT The Selection of appropriate phase change material in the field of domestic water heating system is a difficult task due to the availability of the variety of an enormous number of different materials. The researcher’s primary objective is a selection of the desired PCM, which will give the best thermal performance of the domestic water heating latent heat storage system. The paper reports the selection of phase change material with three multi-criteria decision-making (MCDM) methods with conflicting and different objectives. An analytic hierarchy process (AHP) and entropy methods are used to determine the importance criteria weights. For selection purpose, the TOPSIS (Technique for order performance by similarity to ideal solution), VIKOR (Vise KriterijumskaOptimizacijaKompromisnoResenje), and EXPROM2 methods were used, which gives ranking to the alternatives using compromised weight obtained by AHP and entropy methods. This MCDM technique provides a list of all desirable options from the best to the worst suitable materials. Depending on the rankings obtained, the best PCM was found to be the Sodium acetate trihydrate (90%) + graphite (10%), Stearic acid and n-Hexacosane at the given criteria due to its higher physical, chemical, and thermal properties than other alternative PCM materials. The results obtained showed that these methods are feasible tool for the Selection of the best-suited phase change material and can be applied to any material selection decision-making problem to find the best materials.

Investigation on compatibility and thermal reliability of phase change materials for low-temperature thermal energy storage

Two of the important aspects for the successful utilization of phase change materials (PCMs) for thermal energy storage systems are compatibility with container materials and stability. Therefore, the present study is focused on testing the corrosion resistance and surface characteristics of metals in contact with PCMs and thermal behavior of PCMs with heating/cooling cycles. The PCM selection is made by targeting low temperature (<100 °C) heat storage applications. The PCMs considered are paraffin wax, sodium acetate tri-hydrate, lauric acid, myristic acid, palmitic acid, and stearic acid. The metal specimens tested are aluminum, copper, and stainless steel because of their wide usage in thermal equipment. The tests are performed by the method of immersion corrosion test, and ASTM G1 standards are followed. The experiments are carried out at 80 °C and room temperature (30 °C) for the duration of 10, 30, and 60 days. Pertaining to thermal stability 1500 melting/freezing cycles are performed. Investigation has been carried out in terms of corrosion rate, SEM analysis of metal specimens, appearance of PCMs, and variation of thermophysical properties at 0th, 1000th, and 1500th thermal cycles. The most affected area of corrosion, including the dimension of pits, is presented, and comparison is made. Based on the corrosion experiments, recommendations are made for the metal–PCM pairs. Pure sodium acetate trihydrate is observed to suffer from phase segregation and supercooling. After 1500 thermal cycles, the variation in melting and freezing point temperatures for rest of the five PCMs are in the range of − 1.63 to 1.57 °C and − 4.01 to 2.66 °C. Whereas, reduction in latent heat of melting and freezing are in the range of 17.6–28.95% and 15.2–26.78%.

Performance investigation and sensitivity analysis of shell-and-tube phase change material thermal energy storage

This paper presents the development, experimental testing, and numerical investigation of water-based phase change material (PCM) thermal energy storage (TES) using the shell-and-tube design with different tube layouts including single serpentine, double serpentine, and spiral. Sodium acetate trihydrate (SAT) with a melting temperature of 58 °C was used as the storage medium. The major contribution of this study is the sensitivity analysis and performance comparison of the shell-and-tube PCM TES units with different tube layouts. A quasi-three-dimensional dynamic model of the PCM TES unit was developed and used to predict the performance of the TES unit under different design and operating conditions, which was validated against the experimental data. A global sensitivity analysis was implemented to quantify the influence of the design parameters on the performance of the PCM TES unit. The results showed that the inlet water temperature was the most influential parameter, followed by the tube length, water flow rate, tube layout, and PCM thermal conductivity. The PCM TES module with the spiral tube layout and the double serpentine tube layout generally outperformed that with the single serpentine tube layout. The time required to charge the PCM to a liquid fraction of 0.95 was reduced by 16.0% if changing the tube layout from single serpentine to spiral and when the tube length was 4,055 mm. The findings obtained from this study could be potentially used to guide and facilitate the design of the shell-and-tube PCM TES units.

Thermal conductivity enhancement of a sodium acetate trihydrate–potassium chloride–urea/expanded graphite composite phase–change material for latent heat thermal energy storage

To create an energy–efficient heat pump latent heat thermal energy storage (HPLHTES) system, a novel sodium acetate trihydrate (SAT)–potassium chloride (KCl)–urea/expanded graphite (EG) composite phase–change material (CPCM) was developed in this study. EG was introduced into the base composite salt to prepare the novel CPCM, SAT–KCl–urea/EG. The thermal properties, crystalline phase, and morphology of the resulting CPCM were experimentally characterized. It was found that the SAT–KCl–urea/EG CPCM comprising 9 wt% EG was optimal for affording improved thermal–energy storage performance without compromising phase–change properties. The obtained CPCM exhibits an appropriate melting point of 47.5 °C and a high phase–change enthalpy of 200.3 kJ/kg. The thermal conductivity of the SAT–KCl–urea/EG CPCM was 1.48 W/m·K, approximately 5.3 times that of the SAT–KCl–urea composite salt (0.28 W/m·K). The required phase–change duration of the SAT–KCl–urea/EG CPCM was approximately 30% less than that of the SAT–KCl–urea composite salt. After 100 thermal–cycle tests, the SAT–KCl–urea/9 wt% EG CPCM retained a desirable phase–change temperature of 45.9 °C, high latent heat of 190.8 kJ/kg, and an acceptable supercooling degree of 1.56 °C. These thermal feature results showed that the SAT–KCl–urea/9 wt% EG CPCM exhibited great potential for use in the HPLHTES systems.

Experimental investigation of the novel melting point modified Phase–Change material for heat pump latent heat thermal energy storage application

The thermal properties of the heat storage medium integrated with the heat pump (HP) should be suitable for the desired application in terms of providing thermal comfort for the end–users and matching the operation condition of the HP. In this study, a novel melting point modified composite phase–change material (CPCM) was developed for air–source HP. We concluded that sodium acetate trihydrate (SAT) modified with 10 wt% acetamide, 4 wt% nucleator, and 4 wt% thickener, which yielded the desired melting point (47.8 °C) and high latent heat (219.8 kJ/kg) presented better thermal reliability than the other component groups. The coefficient of performance of HP with novel CPCM was significantly enhanced compared to that of SAT CPCM, in which the maximum difference was 13.2%. Moreover, the average temperature of the discharging water drained from the novel CPCM unit was 4 °C higher than that of the control group. The overall efficiency of the heating system containing novel CPCM shows an increasing trend with a higher flow rate within a certain range. The system exhibits a payback period of about 5 years and a high bill saving of HK$6627.62 (US$861.59) over a 10-year analysis compared with conventional heaters.

Nanoparticle-modified thermoelectric tetrahedrite as an effective nucleating agent for sodium acetate trihydrate based phase change materials

Sodium acetate trihydrate phase change materials (SAT-PCMs) for thermal energy storage have been studied and applied widely because of their enhanced energy efficiency and environmental friendliness, while their application on energy exchanging requires stable chemical property and great heat storage-release merit. Nanoparticles-modified tetrahedrite (CNAS-NPs) composites show high thermoelectric properties among copper sulfides, and present excellent nucleating performance in SAT-PCMs. As characterized, the NPs were uniformly distributed into the CNAS grains, and a large number of nanopores were appeared in the grain boundaries after SPS treatment. As a heterogeneous nucleation site, NPs were used to reduce the thermal conductivity, but simultaneously maintained a relatively high electrical conductivity. As a result, by adding a small quantity of SiC, a relatively high ZT ∼ 1.0 at 723 K is obtained, which increases by ∼42% in the pure CNAS sample. Finally, the CNAS-NPs regarded as nucleating agents obviously decrease the supercooling degree and improve the heat storage-release cycle property. These SAT-PCMs also possess high latent heat, fine chemical stability and robust nanostructures, which illustrates promising potentials in practical applications.

Development of poly(vinyl alcohol) (PVA)-based sodium ion conductors for electric double-layer capacitors application

In this work, ionic liquid, poly(vinyl alcohol) (PVA)-based sodium ion conductors were prepared by solution casting technique. The additives-free ion conductors illustrated poor ionic conductivity which is not applicable in any electrochemical device. Therefore, ionic liquid was added to improve the ionic conductivity of polymer electrolytes. Ionic liquid, 1-butyl-3-methylimidazolium bromide (BmImBr)-added solid polymer electrolytes comprising poly(vinyl alcohol) (PVA) and sodium acetate trihydrate (CH3COONa·3H2O) was investigated. The ionic conductivity of BmImBr-added polymer electrolyte (PE) showed an increment about five orders of magnitude from (1.07 ± 0.03) × 10−8 S cm−1 to (1.95 ± 0.01) × 10−3 S cm−1 with doping of 20 wt% of BmImBr under ambient temperature. The BmImBr-added PEs obey the Vogel–Tamman–Fulcher (VTF) theory. The plasticizing effect of BmImBr reduces the glass transition temperature (Tg) of the PEs. Complexation between PVA, CH3COONa·3H2O, and BmImBr was proven in Fourier-transform Infrared (FTIR) spectroscopy studies. Quantitative analysis of the interaction between PVA, CH3COONa·3H2O, and BmImBr was also scrutinized in FTIR study. The electrochemical potential window of the electrolyte was wider upon the addition of ionic liquid. Electric double-layer capacitors (EDLCs) were assembled. The assembled EDLC illustrated a specific capacitance of 0.684F g−1 with excellent electrochemical stability.