Recent Advances and Future Perspectives of PVDF-Based Composite Polymer Electrolytes for Lithium Metal Batteries: A Review

Zhang, Yuhan; Zhu, Chengyu; Bai, Sun Joon; Mao, J.; Cheng, Fei

doi:10.1021/acs.energyfuels.3c00678

Cited by 21 publications

(4 citation statements)

References 178 publications

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“…The prepared gel electrolyte showed a flame-retardant effect, and the severe side reactions between lithium metal and nitrile were also inhibited. The relative content of SSE and LE in HSLEs significantly influences the safety and stability of the battery, thus warranting attention. , …”

Section: Hybrid Solid–liquid Electrolyte (Hsle)mentioning

confidence: 99%

Advanced Electrolytes for Rechargeable Lithium Metal Batteries with High Safety and Cycling Stability

Huang,

Cao,

Geng

et al. 2024

Acc. Mater. Res.

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Metrics & MoreArticle RecommendationsCONSPECTUS: With the rapid development of advanced energy storage equipment, particularly lithium-ion batteries (LIBs), there is a growing demand for enhanced battery energy density across various fields. Consequently, an increasing number of high-specificcapacity cathode and anode materials are being rapidly developed. Concurrently, challenges pertaining to insufficient battery safety and stability arising from liquid electrolytes (LEs) with flammability persistently emerge. LEs possess the advantages of exceptional ionic conductivity and can operate within a broader temperature range. After two decades of continuous development in commercial applications, it currently stands as the most widely employed electrolyte material in lithium-ion batteries. However, the existing LE primarily consists of a carbonate electrolyte with a low flash point, low boiling point, and flammable and volatile nature, thereby rendering fire and explosion risks inevitable. Compared with LEs, solid-state electrolytes (SSEs) exhibit relatively good flame retardancy and possess the potential to inhibit lithium dendrite formation, and they are regarded as promising electrolyte materials. Nevertheless, numerous challenges of SSEs still need to be addressed at this stage. The inadequate solid−solid contact between the solid electrolyte and the electrode material, as well as the insufficient contact stability, significantly impact the cycling stability of solid-state batteries. Furthermore, unlike liquid electrolytes, the solid electrolyte lacks fluidity and cannot effectively penetrate the pores of porous electrodes, necessitating additional cathode design considerations. The incompatibility with existing liquid battery production processes and high cost further impede the advancement of solid-state batteries. In response to the challenges associated with solid-state batteries, recent research has introduced in situ solidification solutions. By transformation of the liquid into a solid electrolyte within the battery, this method facilitates excellent interfacial contact between the electrolyte and electrode material while ensuring compatibility with existing production equipment. Consequently, these advantages have propelled in situ solidification to become a prominent research methodology for solid-state batteries. Currently, electrolyte research is undergoing a transitional period from liquid to solid-state, accompanying the emergence of numerous hybrid solid−liquid electrolytes (HSLEs). HSLEs not only exhibit the high ionic conductivity characteristic of liquid electrolytes but also enhance battery safety and stability to a certain extent. HSLEs are found in various forms, including hybrid systems comprising inorganic solid electrolytes and LEs, as well as gel systems consisting of polymer electrolytes and LEs. Additionally, there are in situ solidification technologies that enable the gel electrolyte to be formed internally within the battery. This concept introduces the development status of electrol...

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Section: Hybrid Solid–liquid Electrolyte (Hsle)mentioning

confidence: 99%

Advanced Electrolytes for Rechargeable Lithium Metal Batteries with High Safety and Cycling Stability

Huang,

Cao,

Geng

et al. 2024

Acc. Mater. Res.

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“…Low ionic conductivity of SSEs is one of the major limitations of ASSLBs, especially for polymer-based SSEs, such as poly(ethylene oxide) (PEO), − poly(vinylidene fluoride) (PVDF) and its copolymer with hexafluoropropylene (PVDF-HFP), − polyacrylonitrile (PAN), − and poly(methyl methacrylate) (PMMA). − The low ionic conductivity of 10 –8 ∼10 –5 S cm –1 at room temperature for polymer SSEs is an unavoidable challenge, even though they have the superiority of high flexibility and good interface contact with the electrodes. Therefore, various advanced inorganic SSEs with different structures have been developed in recent years.…”

Section: Introductionmentioning

confidence: 99%

Status and Prospect of Two-Dimensional Materials in Electrolytes for All-Solid-State Lithium Batteries

Lan,

Luo,

et al. 2024

ACS Nano

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Replacing liquid electrolytes and separators in conventional lithium-ion batteries with solid-state electrolytes (SSEs) is an important strategy to ensure both high energy density and high safety. Searching for fast ionic conductors with high electrochemical and chemical stability has been the core of SSE research and applications over the past decades. Based on the atomic-level thickness and infinitely expandable planar structure, numerous two-dimensional materials (2DMs) have been exploited and applied to address the most critical issues of low ionic conductivity of SSEs and lithium dendrite growth in all-solidstate lithium batteries. This review introduces the research process of 2DMs in SSEs, then summarizes the mechanisms and strategies of inert and active 2DMs toward Li + transport to improve the ionic conductivity and enhance the electrode/ SSE interfacial compatibility. More importantly, the main challenges and future directions for the application of 2DMs in SSEs are considered, including the importance of exploring the relationship between the anisotropic structure of 2DMs and Li + diffusion behavior, the exploitation of more 2DMs, and the significance of in situ characterizations in elucidating the mechanisms of Li + transport and interfacial reactions. This review aims to provide a comprehensive understanding to facilitate the application of 2DMs in SSEs.

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“…In previous studies on all-solid-state lithium batteries, polymers have emerged as particularly prominent solid electrolyte matrix materials, 8,16–18 including polyoxyethylene (PEO), 19 polyacrylonitrile (PAN), 20 the polyvinylidene-hexafluoro-propylene copolymer (PVDF-HFP), 21 and polymethyl methacrylate (PMMA). 22 PEO is considered as a crucial candidate for the commercialization of solid-state lithium batteries due to its affordability, environmental friendliness, excellent electrochemical stability, and high solubility of lithium salts.…”

Section: Introductionmentioning

confidence: 99%

Enhanced lithium-ion conductivity and interficial stability of Li-IL@Fe-BDC composite polymer electrolytes for solid-state lithium metal batteries

Liu,

Gong,

Liu

et al. 2024

Green Chem.

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Recent Advances and Future Perspectives of PVDF-Based Composite Polymer Electrolytes for Lithium Metal Batteries: A Review

Cited by 21 publications

References 178 publications

Advanced Electrolytes for Rechargeable Lithium Metal Batteries with High Safety and Cycling Stability

Advanced Electrolytes for Rechargeable Lithium Metal Batteries with High Safety and Cycling Stability

Status and Prospect of Two-Dimensional Materials in Electrolytes for All-Solid-State Lithium Batteries

Enhanced lithium-ion conductivity and interficial stability of Li-IL@Fe-BDC composite polymer electrolytes for solid-state lithium metal batteries

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