Porous, robust, thermally stable, and flame retardant nanocellulose/polyimide separators for safe lithium-ion batteries

Liu, Yi; Li, Chao; Li, Chunxing; Xu, Linhe; Zhou, Shuang; Zhang, Ze; Zhang, Junxian; Soham, Das; Fan, Rong; Liu, Hao; Chen, Gang; Li, Yuanyuan; Ling, Tong; Li, Zhipeng; Tao, Jinsong; Wan, Jiayu

doi:10.1039/d3ta05148j

Cited by 15 publications

(1 citation statement)

References 45 publications

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“…When exposed to heat, they generate inert gases such as N 2 , effectively mitigating the risk of combustion and thermal runaway. Due to their outstanding flame-retardant properties, amide groups are extensively employed in the electrolytes of LMBs [83] . Zhu et al developed an innovative gel electrolyte based on an amide-based skeleton, successfully synthesizing a GPE during the preparation process by mixing the LE with 3% N,N'-methylene bis (acrylamide) and polymerizing it in situ [58] .…”

Section: Amide For Gpesmentioning

confidence: 99%

Design strategy towards flame-retardant gel polymer electrolytes for safe lithium metal batteries

Yang,

Li,

Pan

et al. 2024

Energy Mater

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The emergence of lithium metal batteries (LMBs) as a promising technology in energy storage devices is attributed to their high energy density. However, the inherent flammability and leakage of the internal liquid organic electrolyte pose serious safety risks when exposed to heat. In response to this challenge, gel polymer electrolytes (GPEs) have been developed to mitigate leakage and enhance nonflammability by incorporating flame-retardant groups, thereby improving the safety of LMBs. This review commences with a brief analysis of the thermal runaway mechanism specific to LMBs, emphasizing its distinctions from that of lithium-ion batteries. Following this, the various methods employed to assess the safety of LMBs are discussed, including flammability, thermal stability, and abuse assessment. The following section categorizes recent research on safe GPEs according to different flame retardancy levels providing a concise overview of each category. Finally, the review explores current advancements in developing safety-oriented GPEs and considers potential future research directions.

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Section: Amide For Gpesmentioning

confidence: 99%

Design strategy towards flame-retardant gel polymer electrolytes for safe lithium metal batteries

Yang,

Li,

Pan

et al. 2024

Energy Mater

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Cellulose Separators for Rechargeable Batteries with High Safety: Advantages, Strategies, and Perspectives

Chen,

Lin,

Yang

et al. 2024

Adv Funct Materials

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Most of the separators used in commercial rechargeable batteries are polypropylene and polyethylene, which have the characteristics of high mechanical strength and good chemical stability. Due to lower melting point, however, these separators may melt when the internal temperature of the cell rises. The direct contact of the positive and negative electrodes after the melting of separator will cause serious safety issues. Cellulose‐based separators have received increasing attention in rechargeable batteries because of advantages including high‐temperature resistance, high electrolyte affinity, renewability, and the ability to suppress the shuttle effect. Herein, the application of cellulose separators in rechargeable batteries is summarized in this review. An overview of the cellulose structure, elucidating both its advantages and the challenges as separators in rechargeable batteries is presented. The application of different types of cellulose as separators is also discussed. Furthermore, the failure mechanism of cellulose separators are explored in depth, which can provide guidance for designing safer and more reliable separators for rechargeable batteries. The modification strategies of cellulose separators are summarized in terms of the improved mechanical strength, heat resistance, good wettability, and other properties. Finally, promising perspectives are proposed for the future development of cellulose separators aimed at large‐scale applications.

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Robust Composite Separator Randomly Interwoven by PI and Pre-oxidized PAN Nanofibers for High Performance Lithium-ion Batteries

Li,

Pan,

Gan

et al. 2024

Chin J Polym Sci

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Porous, robust, thermally stable, and flame retardant nanocellulose/polyimide separators for safe lithium-ion batteries

Abstract: The safety of lithium-ion batteries (LIBs) is paramount for all users. One effective way to improve safety is incorporating heat-resistant polyimide (PI) separators, which can increase the thermal stability of...

Cited by 15 publications

References 45 publications

Design strategy towards flame-retardant gel polymer electrolytes for safe lithium metal batteries

Design strategy towards flame-retardant gel polymer electrolytes for safe lithium metal batteries

Cellulose Separators for Rechargeable Batteries with High Safety: Advantages, Strategies, and Perspectives

Robust Composite Separator Randomly Interwoven by PI and Pre-oxidized PAN Nanofibers for High Performance Lithium-ion Batteries

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