scholarly journals Fabrication of PEO-PMMA-LiClO4-Based Solid Polymer Electrolytes Containing Silica Aerogel Particles for All-Solid-State Lithium Batteries

Energies ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 2559 ◽  
Author(s):  
Ye Lim ◽  
Hyun-Ah Jung ◽  
Haejin Hwang

To improve the ionic conductivity and thermal stability of a polyethylene oxide (PEO)-ethylene carbonate (EC)-LiClO4-based solid polymer electrolyte for lithium-ion batteries, polymethyl methacrylate (PMMA) and silica aerogel were incorporated into the PEO matrix. The effects of the PEO:PMMA molar ratio and the amount of silica aerogel on the structure of the PEO-PMMA-LiClO4 solid polymer electrolyte were studied by X-ray diffraction, Fourier-transform infrared spectroscopy and alternating current (AC) impedance measurements. The solid polymer electrolyte with PEO:PMMA = 8:1 and 8 wt% silica aerogel exhibited the highest lithium-ion conductivity (1.35 × 10−4 S∙cm−1 at 30 °C) and good mechanical stability. The enhanced amorphous character and high degree of dissociation of the LiClO4 salt were responsible for the high lithium-ion conductivity observed. Silica aerogels with a high specific surface area and mesoporosity could thus play an important role in the development of solid polymer electrolytes with improved structure and stability.

2018 ◽  
Vol 6 (48) ◽  
pp. 24848-24859 ◽  
Author(s):  
Zhen Li ◽  
Qiming Yao ◽  
Qi Zhang ◽  
Yangqiang Zhao ◽  
Dangxun Gao ◽  
...  

An approach to construct ionic channels in SICSPEs by blending pre-assembled ionic nanowires and hyperbranched polymers for high lithium-ion conductivity.


2015 ◽  
Vol 6 (7) ◽  
pp. 1052-1055 ◽  
Author(s):  
Suting Yan ◽  
Jianda Xie ◽  
Qingshi Wu ◽  
Shiming Zhou ◽  
Anqi Qu ◽  
...  

A solid polymer electrolyte fabricated using ion containing microgels manifests high ionic conductivity for potential use in lithium batteries.


2020 ◽  
Vol 8 (19) ◽  
pp. 9579-9589 ◽  
Author(s):  
Yuhan Li ◽  
Libo Zhang ◽  
Zongjie Sun ◽  
Guoxin Gao ◽  
Shiyao Lu ◽  
...  

Lithium ion conductivity and mechanical strength of a PEO based composite solid polymer electrolyte are improved by adding h-BN.


2021 ◽  
Author(s):  
Chandni Devi ◽  
Jnaneswari Gellanki ◽  
Håkan Pettersson ◽  
Sandeep Kumar

Abstract Solid-state sodium ion batteries are frequently referred to as the most promising technology for future energy storage applications. However, developing a solid electrolyte with high ionic conductivity and a wide electrochemical stability window, remains a major challenge. Although solid-polymer electrolytes have attracted great interest due to their low cost, low density and very good processability, they generally have significantly lower ionic conductivity and poor mechanical strength. Here, we report on the development of a low-cost solid polymer electrolyte comprised of poly(ethylene oxide), poly(vinylpyrrolidone) and sodium hexafluorophosphate, mixed with indium arsenide nanowires. We show that the addition of 1.0 percent by weight of nanowires increases the sodium ion conductivity in the polymer to 1.50 × 10-4 Scm−1 at 40° C. This is the highest reported conductivity for any solid polymer electrolyte to date. In order to explain this remarkable characteristic, we propose a new transport model where sodium ions hop between close-spaced defect sites present on the surface of the nanowires, forming an effective complex conductive percolation network. Our work represents a significant advance in the development of novel solid polymer electrolytes with embedded ultrafast 1D percolation networks for next generations of low-cost, high-performance batteries with excellent energy storage capabilities.


2019 ◽  
Vol 48 (10) ◽  
pp. 3263-3269 ◽  
Author(s):  
Kang-Qiang He ◽  
Jun-Wei Zha ◽  
Peng Du ◽  
Samson Ho-Sum Cheng ◽  
Chen Liu ◽  
...  

Solid polymer electrolytes (SPEs) have drawn considerable attention owing to their reliable safety performance, electrochemical stability and exceptional flexibility.


2013 ◽  
Vol 33 (7) ◽  
pp. 633-638 ◽  
Author(s):  
Mohammad Saleem Khan ◽  
Rahmat Gul ◽  
Mian Sayed Wahid

Abstract Thin films of poly (vinyl chloride) (PVC)/poly (methyl methacrylate) (PMMA) blend polymers complexed with different concentrations of LiClO4 salt, containing ethylene carbonate (EC) as the plasticizer, were fabricated by the solution cast procedure. Ionic conductivity, thermal stability and X-ray diffraction (XRD) studies were undertaken. AC impedance measurements were done in the temperature range of 20–70°C. The highest ionic conductivity at room temperature was found to be 2.23×10-5 S cm-1 for the sample containing 15 wt% of LiClO4 salt. The XRD technique was used to investigate the structure and complex formation of solid polymer electrolytes. There was a decrease in degree of crystallinity. The amorphous nature of complexed solid polymer blend electrolyte films increased, due to the addition of LiClO4 salt. Thermogravimetric analysis (TGA) and differential thermal analysis (DTA) revealed the effect of salt on the thermal stability of the polymer electrolytes. It was found that these polymer electrolyte systems show stability up to about 280°C. It was also found that, with increased LiClO4 salt content in complexed polymer electrolyte systems, the degradation temperature decreased.


RSC Advances ◽  
2017 ◽  
Vol 7 (33) ◽  
pp. 20373-20383 ◽  
Author(s):  
Ta-Ming Liu ◽  
Diganta Saikia ◽  
Sze-Yuan Ho ◽  
Ming-Chou Chen ◽  
Hsien-Ming Kao

The blended hybrid solid polymer electrolyte possessed a high ionic conductivity value of 1.2 × 10−4 S cm−1 at 30 °C.


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