Preparation and Characterization of PVA Alkaline Solid Polymer Electrolyte with Addition of Bamboo Charcoal

Fan, Lidan; Wang, Mengyue; Zhang, Zhen; Qin, Gang; Hu, Xiaoyun; Chen, Qiang

doi:10.3390/ma11050679

Cited by 49 publications

(36 citation statements)

References 35 publications

(47 reference statements)

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“…In the previous work, it was indicated that Cu(II)-complex improved the amorphous structure in the PVA-composed system [ 14 ]. According to previous report [ 71 ], the growth in the structure of amorphous is useful in local chain segmental movement because it promotes the transportation of ions and thus enhances the σ DC . Thus, ions transfer freely through the PE.…”

Section: Resultsmentioning

confidence: 99%

The Study of EDLC Device with High Electrochemical Performance Fabricated from Proton Ion Conducting PVA-Based Polymer Composite Electrolytes Plasticized with Glycerol

et al. 2020

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In the present work, a novel polymer composite electrolytes (PCEs) based on poly(vinyl alcohol) (PVA): ammonium thiocyanate (NH4SCN): Cd(II)-complex plasticized with glycerol (Gly) are prepared by solution cast technique. The film structure was examined by XRD and FTIR routes. The utmost ambient temperature DC ionic conductivity (σDC) of 2.01 × 10−3 S cm−1 is achieved. The film morphology was studied by field emission scanning electron microscopy (FESEM). The trend of σDC is further confirmed with investigation of dielectric properties. Transference numbers of ions (tion) and electrons (tel) are specified to be 0.96 and 0.04, respectively. Linear sweep voltammetry (LSV) displayed that the PCE potential window is 2.1 V. The desired mixture of activated carbon (AC) and carbon black was used to fabricate the electrodes of the EDLC. Cyclic voltammetry (CV) was carried out by sandwiching the PCEs between two carbon-based electrodes, and it revealed an almost rectangular shape. The EDLC exhibited specific capacitance, energy density, and equivalent series resistance with average of 160.07F/g, 18.01Wh/kg, and 51.05Ω, respectively, within 450 cycles. The EDLC demonstrated the initial power density as 4.065 × 103 W/Kg.

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Section: Resultsmentioning

confidence: 99%

The Study of EDLC Device with High Electrochemical Performance Fabricated from Proton Ion Conducting PVA-Based Polymer Composite Electrolytes Plasticized with Glycerol

et al. 2020

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“…These functional groups are substantial for mixing with conducting salt and a filler. The utilization of PVA as substantive material as a host polymer for electrolyte was reported earlier [ 12 ].…”

Section: Introductionmentioning

confidence: 95%

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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“…The high ionic conductivity was attributed to the amorphous structure of the film and ability to maintain the hydration of (SO 4 ) 2− ions . Despite all these developments, the conductivities of these neutral pH ion‐conducting polymer electrolytes are still below those reported in many proton and hydroxide‐conducting electrolytes …”

Section: Introductionmentioning

confidence: 99%

Na₂SO₄‐Polyacrylamide Electrolytes and Enabled Solid‐State Electrochemical Capacitors

Virya

Abella

Grindal

et al. 2019

Batteries & Supercaps

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A highly ionic-conductive and high-performance neutral pH polymer electrolyte comprises of Na 2 SO 4 and polyacrylamide (PAM) was developed for solid electrochemical double-layer capacitors (EDLCs). Na 2 SO 4 was compared with Li 2 SO 4 baseline in liquid electrolyte and exhibited higher ionic conductivity and identical stability window. Na 2 SO 4 À PAM electrolytes were optimized by varying their salt-to-polymer ratio. While all compositions show excellent stability for over 30-day tracking period, an ionic conductivity of ca. 30 mS cm À 1 was attained at 10,000 : 1 molar ratio of Na 2 SO 4 :PAM, among the highest reported for neutral pH polymer electrolytes. Raman spectroscopy verified that the electrolyte maintained well-hydrated ions throughout the 30 days monitoring period. Solid EDLCs were constructed using activated carbon electrodes and Na 2 SO 4 À PAM electrolyte. They exhibited a wide 1.9 V operating window at 50 mV s À 1 CV scan rate, with comparable capacitance to its liquid baseline. The solid EDLCs outperformed many symmetric devices in terms of energy and power densities. They also displayed good rate capability (up to 500 mV s À 1 ) and excellent cycle life (> 8,000 cycles).

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Preparation and Characterization of PVA Alkaline Solid Polymer Electrolyte with Addition of Bamboo Charcoal

Cited by 49 publications

References 35 publications

The Study of EDLC Device with High Electrochemical Performance Fabricated from Proton Ion Conducting PVA-Based Polymer Composite Electrolytes Plasticized with Glycerol

The Study of EDLC Device with High Electrochemical Performance Fabricated from Proton Ion Conducting PVA-Based Polymer Composite Electrolytes Plasticized with Glycerol

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

Na₂SO₄‐Polyacrylamide Electrolytes and Enabled Solid‐State Electrochemical Capacitors

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Preparation and Characterization of PVA Alkaline Solid Polymer Electrolyte with Addition of Bamboo Charcoal

Cited by 49 publications

References 35 publications

The Study of EDLC Device with High Electrochemical Performance Fabricated from Proton Ion Conducting PVA-Based Polymer Composite Electrolytes Plasticized with Glycerol

The Study of EDLC Device with High Electrochemical Performance Fabricated from Proton Ion Conducting PVA-Based Polymer Composite Electrolytes Plasticized with Glycerol

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

Na2SO4‐Polyacrylamide Electrolytes and Enabled Solid‐State Electrochemical Capacitors

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Product

Resources

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Na₂SO₄‐Polyacrylamide Electrolytes and Enabled Solid‐State Electrochemical Capacitors