scholarly journals Properties of the PVA-VAVTD KOH Blend as a Gel Polymer Electrolyte for Zinc Batteries

Gels ◽  
2021 ◽  
Vol 7 (4) ◽  
pp. 256
Author(s):  
Alisson A. Iles Velez ◽  
Edwin Reyes ◽  
Antonio Diaz-Barrios ◽  
Florencio Santos ◽  
Antonio J. Fernández Romero ◽  
...  
Keyword(s):  
Polymer Electrolytes ◽  
Low Cost ◽  
Gel Polymer Electrolyte ◽  
Amorphous Region ◽  
High Energy ◽  
High Energy Density ◽  
Intensity Increase ◽  
Gel Polymer Electrolytes ◽  
Environmental Friendliness ◽  
Casting Technique

Rechargeable zinc-air batteries are promising for energy storage and portable electronic applications because of their good safety, high energy density, material abundance, low cost, and environmental friendliness. A series of alkaline gel polymer electrolytes formed from polyvinyl alcohol (PVA) and different amounts of terpolymer composed of butyl acrylate, vinyl acetate, and vinyl neodecanoate (VAVTD) was synthesized applying a solution casting technique. The thin films were doped with KOH 12M, providing a higher amount of water and free ions inside the electrolyte matrix. The inclusion of VAVTD together with the PVA polymer improved several of the electrical properties of the PVA-based gel polymer electrolytes (GPEs). X-ray diffraction (XRD), thermogravimetric analysis (TGA), and attenuated total reflectance- Fourier-transform infrared spectroscopy (ATR-FTIR) tests, confirming that PVA chains rearrange depending on the VAVTD content and improving the amorphous region. The most conducting electrolyte film was the test specimen 1:4 (PVA-VAVTD) soaked in KOH solution, reaching a conductivity of 0.019 S/cm at room temperature. The temperature dependence of the conductivity agrees with the Arrhenius equation and activation energy of ~0.077 eV resulted, depending on the electrolyte composition. In addition, the cyclic voltammetry study showed a current intensity increase at higher VAVTD content, reaching values of 310 mA. Finally, these gel polymer electrolytes were tested in Zn–air batteries, obtaining capacities of 165 mAh and 195 mAh for PVA-T4 and PVA-T5 sunk in KOH, respectively, at a discharge current of −5 mA.

scholarly journals A Crosslinked Soybean Protein Isolate Gel Polymer Electrolyte Based on Neutral Aqueous Electrolyte for a High-Energy-Density Supercapacitor

Polymers ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 863 ◽  
Author(s):  
Pengfei Huo ◽  
Shoupeng Ni ◽  
Pu Hou ◽  
Zhiyu Xun ◽  
Yang Liu ◽  
...  
Keyword(s):  
Solid State ◽  
Polymer Electrolyte ◽  
Polymer Electrolytes ◽  
Soybean Protein ◽  
Gel Polymer Electrolyte ◽  
High Energy ◽  
Protein Isolate ◽  
High Energy Density ◽  
Gel Polymer Electrolytes ◽  
Soybean Protein Isolate

A crosslinked membrane based on renewable, degradable and environmentally friendly soybean protein isolate was formed by solution casting method. A series of gel polymer electrolytes were prepared with the crosslinked membranes saturated with 1 mol·L−1 Li2SO4. The solid-state electric double-layer capacitors were fabricated with the prepared gel polymer electrolytes and activated carbon electrodes. The optimized solid-state supercapacitor delivered a single electrode specific capacitance of 115.17 F·g−1 at a current density of 1.0 A·g−1, which was higher than the supercapacitor assembled with the commercial separator in 1 mol·L−1 Li2SO4. The solid-state supercapacitor exhibited an outstanding cycling stability, indicating that the gel polymer electrolyte based on the crosslinked soybean protein isolate membrane could be a promising separator for a solid-state supercapacitor.

Recent Advancements of Functional Gel Polymer Electrolytes for Rechargeable Lithium Metal Batteries

2021 ◽  
Author(s):  
Sha Fu ◽  
Lan-Lan Zuo ◽  
Peng-Sheng Zhou ◽  
Xue-Jiao Liu ◽  
Qiang Ma ◽  
...  
Keyword(s):  
Energy Density ◽  
Polymer Electrolytes ◽  
High Energy ◽  
High Energy Density ◽  
Gel Polymer Electrolytes ◽  
Lithium Metal ◽  
Lithium Metal Batteries ◽  
Metallic Lithium ◽  
Electrochemical Storage ◽  
Storage Technologies

Lithium metal batteries (LMBs) as the next generation promising high energy density alternatives among electrochemical storage technologies have received worldwide attention. However, the incompatibility between metallic lithium and traditional liquid...

Transport and Morphological Properties of Gel Polymer Electrolytes Containing Mg(CF3SO3)2

2013 ◽  
Vol 686 ◽  
pp. 137-144 ◽  
Author(s):  
N.H. Zainol ◽  
Zurina Osman ◽  
Lisani Othman ◽  
K.B. Md. Isa
Keyword(s):  
Polymer Electrolyte ◽  
Polymer Electrolytes ◽  
Ethylene Carbonate ◽  
Gel Polymer Electrolyte ◽  
Morphological Properties ◽  
Gel Polymer Electrolytes ◽  
Casting Technique ◽  
Ionic Transport Number ◽  
Solution Casting Technique ◽  
Ion Conducting

Magnesium-ion conducting gel polymer electrolytes (GPEs) based on PMMA with ethylene carbonate (EC) and propylene carbonate (PC) as a plasticizing solvent were prepared via the solution casting technique. Mg(CF3SO3)2 salt was used as source of magnesium ions, Mg2+. The variation of conductivity with salt concentrations, from 5 wt.% to 30 wt.% was studied. The gel polymer electrolyte with composition 20 wt.% of Mg(CF3SO3)2 exhibited the highest conductivity of 1.27 x 10-3 S cm-1 at room temperature. The conductivity-temperature dependence of gel polymer electrolyte films obeys Arrhenius behaviour with activation energy in the range of 0.18 eV to 0.26 eV. Ionic transport number was evaluated using DC polarization technique and it reveals the conducting species are predominantly ions. It is found that the ionic conductivity and transport properties of the prepared GPEs are consistent with the X-Ray Diffraction (XRD) and Field Emission Scanning Electron Microscopy (FESEM) studies.

High-performance flexible quasi-solid-state Zn–MnO2 battery based on MnO2 nanorod arrays coated 3D porous nitrogen-doped carbon cloth

2017 ◽  
Vol 5 (28) ◽  
pp. 14838-14846 ◽  
Author(s):  
Wenda Qiu ◽  
Yu Li ◽  
Ao You ◽  
Zemin Zhang ◽  
Guangfu Li ◽  
...  
Keyword(s):  
High Performance ◽  
Low Cost ◽  
High Energy ◽  
High Energy Density ◽  
Carbon Cloth ◽  
Nanorod Arrays ◽  
Energy Storage Devices ◽  
Environmental Friendliness ◽  
Storage Devices ◽  
Nitrogen Doped Carbon

Aqueous Zn–MnO2 batteries have great potential as flexible energy storage devices owing to their low cost, high energy density, safety, and environmental friendliness.

Molten salt strategy and plasma technology induced MnO2 with oxygen vacancy for high performance Zn-ions battery

2021 ◽  
Author(s):  
Fuqiang Shao ◽  
Shuke Li ◽  
Yanchao Xu ◽  
Yang Jiao ◽  
Jianrong Chen
Keyword(s):  
High Performance ◽  
Low Cost ◽  
High Energy ◽  
High Energy Density ◽  
Zinc Ions ◽  
Plasma Technology ◽  
Environmental Friendliness ◽  
High Theoretical Capacity ◽  
Zn Ions ◽  
Promising Electrode Material

The low cost, high energy density, high theoretical capacity and environmental friendliness of manganese dioxide (MnO2) is a promising electrode material in aqueous zinc-ions battery. However, the poor conductivity and...

scholarly journals Na0.76V6O15/Activated Carbon Hybrid Cathode for High-Performance Lithium-Ion Capacitors

Materials ◽  
2020 ◽  
Vol 14 (1) ◽  
pp. 122
Author(s):  
Renwei Lu ◽  
Xiaolong Ren ◽  
Chong Wang ◽  
Changzhen Zhan ◽  
Ding Nan ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Energy Density ◽  
Power Density ◽  
Cathode Materials ◽  
Low Cost ◽  
Lithium Ion ◽  
High Energy ◽  
Cycling Stability ◽  
High Energy Density ◽  
Artificial Graphite

Lithium-ion hybrid capacitors (LICs) are regarded as one of the most promising next generation energy storage devices. Commercial activated carbon materials with low cost and excellent cycling stability are widely used as cathode materials for LICs, however, their low energy density remains a significant challenge for the practical applications of LICs. Herein, Na0.76V6O15 nanobelts (NaVO) were prepared and combined with commercial activated carbon YP50D to form hybrid cathode materials. Credit to the synergism of its capacitive effect and diffusion-controlled faradaic effect, NaVO/C hybrid cathode displays both superior cyclability and enhanced capacity. LICs were assembled with the as-prepared NaVO/C hybrid cathode and artificial graphite anode which was pre-lithiated. Furthermore, 10-NaVO/C//AG LIC delivers a high energy density of 118.9 Wh kg−1 at a power density of 220.6 W kg−1 and retains 43.7 Wh kg−1 even at a high power density of 21,793.0 W kg−1. The LIC can also maintain long-term cycling stability with capacitance retention of approximately 70% after 5000 cycles at 1 A g−1. Accordingly, hybrid cathodes composed of commercial activated carbon and a small amount of high energy battery-type materials are expected to be a candidate for low-cost advanced LICs with both high energy density and power density.

A High-Performance Free-Standing Zn Anode for Flexible Zinc-Ion Batteries

Nanoscale ◽  
2021 ◽  
Author(s):  
Chenxi Gao ◽  
Jiawei Wang ◽  
Yuan Huang ◽  
Zixuan Li ◽  
Jiyan Zhang ◽  
...  
Keyword(s):  
Energy Density ◽  
High Performance ◽  
Low Cost ◽  
High Energy ◽  
Zinc Ion ◽  
High Energy Density ◽  
Free Standing ◽  
Energy Device ◽  
Zn Anode ◽  
Significant Attention

Zinc-ion batteries (ZIBs) have attracted significant attention owing to their high safety, high energy density, and low cost. ZIBs have been studied as a potential energy device for portable and...

Novel low-cost, high-energy-density (>700 Wh kg−1) Li-rich organic cathodes for Li-ion batteries

2021 ◽  
Vol 415 ◽  
pp. 128509
Author(s):  
Qihang Yu ◽  
Wu Tang ◽  
Yang Hu ◽  
Jian Gao ◽  
Ming Wang ◽  
...  
Keyword(s):  
Energy Density ◽  
Low Cost ◽  
High Energy ◽  
High Energy Density ◽  
Li Ion Batteries ◽  
Li Ion
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