Novel design of high elastic solid polymer electrolyte for stable lithium metal batteries

Li, Qiuhong; Liao, Yalan; Xing, Cong; Shi, Yaru; Liu, Xiaoyu; Li, Wenrong; Zhang, Jiujun; Zhao, Bing; Jiang, Yong

doi:10.1016/j.jcis.2023.12.187

Cited by 5 publications

(1 citation statement)

References 48 publications

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“…The side reaction might be associated with the incompatibility between sulfonate groups and Li metal, which can lead to the formation of a SEI film with sulfur and Li 2 S. Fortunately, a Li 2 S interphase component is beneficial for homogeneous deposition of lithium ions. 30 Hence, the decrease of interfacial resistance happens and finally remains stable after about 15 days. Galvanostatic charge and discharge performance was tested at 0.1 C (Fig.…”

Section: Resultsmentioning

confidence: 99%

Novel PEO-based Solid Polymer Electrolyte with High Elasticity and High Ionic Conductivity for Room Temperature Lithium Metal Batteries

Chen,

Zhang,

et al. 2024

J. Electrochem. Soc.

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The development and application of polyethylene oxide (PEO) based solid polymer electrolyte (SPE) is severely constrained by its low ionic conductivity and poor tensile resistance. To improve the electrochemical performance of SPE without losing its mechanical properties, a benzene sulfonate-based additive is adopted into crosslinking system composed of -CH2-CH2-O- segments to obtain a membrane with a high ionic conductivity of 1.47×10-4 S cm-1 and an ionic transference number of 0.70 at room temperature. The activation energy value of 0.128 eV gives evidence for a favorable migration mechanism of PTH-SPE. Anti-dendrite growth and contact optimization can be realized by molecular structure design with a tensile elongation of 490%. The reversible overpotential of Li||Li symmetric cell within 1000 h demonstrates that the compact PTH-SPE can inhibit the growth of lithium dendrite. This work provides a new strategy for designing high-performance solid electrolytes for room temperature via a green solvent-free method.

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Section: Resultsmentioning

confidence: 99%

Novel PEO-based Solid Polymer Electrolyte with High Elasticity and High Ionic Conductivity for Room Temperature Lithium Metal Batteries

Chen,

Zhang,

et al. 2024

J. Electrochem. Soc.

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Commonalities and Characteristics Analysis of Fluorine and Iodine used in Lithium‐Based Batteries

Gao,

Liu,

et al. 2024

Adv Funct Materials

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Among optimization strategies for solving the poor ion transport ability and electrolyte/electrode interface compatibility problems of lithium (Li)‐based batteries, halogen elements, such as fluorine (F) and iodine (I), have gradually occupied an important position because of their superb electronegativity, oxidizability, ionic radius, and other properties. The study commences by outlining the shared mechanism by which F and I enhance solid‐state lithium metal batteries' electrochemical performance. In particular, F and I can considerably improve ion transport capacity through chemical means such as intermolecular interactions and halogenation reactions. Furthermore, the utilization of F and I significantly enhances the stability of the electrolyte/electrode interface via physical strategies, encompassing doping techniques, the application of surface coatings, and the fabrication of synthetic intermediate layers. Subsequently, the characteristics of F and I used in Li‐based batteries are elaborated in detail, focusing on the fact that F can provide additional energy density as an anode material but by different mechanisms. Additionally, I can considerably activate dead lithium at the negative electrode, and F can act as a new carrier. Finally, a rational concept of the synergistic effect of F and I is proposed and the feasibility of F–I bihalide solid electrolytes is explored.

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Optimizing balance between ionic conductivity and mechanical performance in polyurethane type polymer electrolyte inducing stable interface for all-solid-state lithium battery

Hu,

Wang,

Zhou

et al. 2024

Journal of Energy Storage

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Novel design of high elastic solid polymer electrolyte for stable lithium metal batteries

Cited by 5 publications

References 48 publications

Novel PEO-based Solid Polymer Electrolyte with High Elasticity and High Ionic Conductivity for Room Temperature Lithium Metal Batteries

Novel PEO-based Solid Polymer Electrolyte with High Elasticity and High Ionic Conductivity for Room Temperature Lithium Metal Batteries

Commonalities and Characteristics Analysis of Fluorine and Iodine used in Lithium‐Based Batteries

Optimizing balance between ionic conductivity and mechanical performance in polyurethane type polymer electrolyte inducing stable interface for all-solid-state lithium battery

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