Electrochemical improvement in high-voltage Li-ion batteries by electrospinning a small amount of nano-Al2O3 in P(MVE-MA)/P(VdF-HFP)-blended gel electrolyte

Zang, Guojing; He, Min; Liao, Youhao; Li, Minsui; Hong, Mingyao; Li, Weishan

doi:10.1007/s11581-021-04351-z

Cited by 6 publications

(1 citation statement)

References 41 publications

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“…This can be done by gradually varying the concentration of the asymmetric GPE. The addition of inert ceramic fillers like SiO 2, [ 11 ] Al 2 O 3, [ 57 ] TiO 2, [ 58 ] and BaTiO 3 [ 59 ] enhances the amorphousness of the polymer matrix, lowering the crystalline region and eventually improving Li‐ion conduction. Reinforcing such additional fillers improves ion conduction with its tensile strength at the cost of elasticity.…”

Section: Gradient Modificationmentioning

confidence: 99%

Transitioning Towards Asymmetric Gel Polymer Electrolytes for Lithium Batteries: Progress and Prospects

Agnihotri,

Ahmed,

Tamilarasan

et al. 2023

Adv Funct Materials

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The utilization of liquid electrolytes (LEs) concerns inevitable dendrite growth and safety issues. In contrast, solid polymer electrolytes suffer from unsettled low ionic conductivity and interfacial impedance issues. The intermediary gel polymer electrolytes (GPEs) improve safety by incorporating a sturdy polymer matrix and ionic conductivity as an advantage of percolating LEs responsible for gelation. The overall stability and compatibility of GPEs with different electrode materials depend on the polymers, plasticizers, and precursors utilized. No single polymer has a wide energy gap to exhibit stability against Li metal anodes and oxidative stability against high‐voltage cathodes. Thereafter, symmetric GPEs (SGPEs) possess limitations while simultaneously satisfying the two electrode requirements, which hinders their practical applications. Asymmetric GPEs (ASGPEs) generally comprise a bilayer or gradient structure, wherein the side contacting the cathode is modified to promote oxidative stability for a stable cathode electrolyte interface (CEI). The corresponding side in contact with the anode is modified to be mechanically and chemically compatible with dendritic lithium. Overall, asymmetric structural engineering enables electrode compatibility while maintaining the physical competency of GPEs. Herein, the focus is to summarize the current transition from SGPEs to asymmetric ones, which promotes multifunctionality while overcoming specific constraints associated with the electrodes.

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Section: Gradient Modificationmentioning

confidence: 99%

Transitioning Towards Asymmetric Gel Polymer Electrolytes for Lithium Batteries: Progress and Prospects

Agnihotri,

Ahmed,

Tamilarasan

et al. 2023

Adv Funct Materials

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Solid‐State Electrolytes by Electrospinning Techniques for Lithium Batteries

Wu,

Lu,

Han

et al. 2024

Small

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Solid‐state lithium batteries (SSLBs) are regarded as next‐generation energy storage devices because of their advantages in terms of safety and energy density. However, the poor interfacial compatibility and low ionic conductivity seriously hinder their development. Electrospinning is considered as a promising method for fabricating solid‐state electrolytes (SSEs) with controllable nanofiber structures, scalability, and cost‐effectiveness. Numerous efforts are dedicated to electrospinning SSEs with high ionic conductivity and strong interfacial compatibility, but a comprehensive summary is lacking. Here, the history of electrospinning SSEs is overeviewed and introduce the electrospinning mechanism, followed by the manipulation of electrospun nanofibers and their utilization in SSEs, as well as various methods to improve the ionic conductivity of SSEs. Finally, new perspectives aimed at enhancing the performance of SSEs membranes and facilitating their industrialization are proposed. This review aims to provide a comprehensive overview and future perspective on electrospinning technology in SSEs, with the goal of guiding the further development of SSLBs.

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Amelioration of ionic conductivity (303 K) with the supplement of MnO2 filler in the chitosan biopolymer electrolyte for magnesium batteries

Helen

Selvin

Lakshmi³

et al. 2022

Polym. Bull.

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In the present work, the signi cance of adding MnO 2 ller towards development of biopolymer electrolyte, chitosan with enhanced ionic conductivity has been reported. The complexation that has taken place with the inclusion of MgNO 3 .6H 2 O salt and MnO 2 ller in the chitosan matrix has been investigated through the Fourier Transform Infra Red (FTIR) spectra analysis. Further, the transport parameter values such as number of charge carrier densities (n), mobility (µ) and diffusion coe cient (D) have been calculated from the deconvoluted FTIR spectra. X-Ray Diffraction (XRD) and Differential Scanning Calorimetric (DSC) examination revealed that the inclusion of ller signi cantly reduced the degree of crystallinity and the glass transition T g values respectively. These ndings show that the inclusion of ller increases the segmental mobility of the polymer chains, allowing for faster ion transport. The conduction properties of the prepared electrolytes has been determined using Alternating Current (AC) impedance analysis, with the electrolyte containing 60 wt% magnesium salt (2.6 ± 0.08) х 10 − 4 S cm − 1 achieving the maximum ionic conductivity value at room temperature (303K). This value is further increased by one order of magnitude with the addition of MnO 2 ller into the polymer matrix (1.25 ± 0.09) х 10 − 3 S cm − 1 . To elucidate the individual contributions of ions and electrons in the conduction process, the Direct Current (DC) polarisation method has been used to determine the transference number (t ion ) of the produced electrolytes. The ller added chitosan polymer exhibits an extended electrochemical stability window, 1.7 V as determined by Linear Sweep Voltammetry (LSV).

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Electrochemical improvement in high-voltage Li-ion batteries by electrospinning a small amount of nano-Al2O3 in P(MVE-MA)/P(VdF-HFP)-blended gel electrolyte

Cited by 6 publications

References 41 publications

Transitioning Towards Asymmetric Gel Polymer Electrolytes for Lithium Batteries: Progress and Prospects

Transitioning Towards Asymmetric Gel Polymer Electrolytes for Lithium Batteries: Progress and Prospects

Solid‐State Electrolytes by Electrospinning Techniques for Lithium Batteries

Amelioration of ionic conductivity (303 K) with the supplement of MnO2 filler in the chitosan biopolymer electrolyte for magnesium batteries

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