轻质高强聚酰亚胺/明胶复合气凝胶的合成：一种防止锂电池热失控的隔热材料。

IF 8.3 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Applied Materials & Interfaces Pub Date : 2025-07-07 DOI:10.1021/acsami.5c10776

Wang Zhan,Lingling Tang,Zhiyuan Xu,Le Chen,Lixia Li,Ru Zhou,Mingyi Chen,Qinghong Kong,Juncheng Jiang

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引用次数: 0

摘要

采用明胶（GA）作为增强材料，提高聚酰亚胺（PI）气凝胶的热力学性能。研究了掺量和冻结速率对复合气凝胶热力学性能的影响。采用表征方法对复合气凝胶的内部结构和化学成分进行了分析。最后，进一步探讨了复合气凝胶增强热力学性能的机理。结果表明，GA能有效提高PI气凝胶的热力学性能，适当的冻结速率可使复合气凝胶内部形成致密的孔隙结构，降低热导率，提高力学性能。此外，热失控保护结果表明，复合气凝胶显著延迟了锂电池的热失控时间。

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Synthesis of Lightweight and High-Strength Polyimide/Gelatin Composite Aerogels: A Thermal Insulation Material for Preventing the Thermal Runaway of Lithium Batteries.

Gelatin (GA) was used as a reinforced material in the study to enhance the thermal-mechanical properties of the polyimide (PI) aerogel. The effects of the content and the freezing rate on the thermal-mechanical properties of the composite aerogels were investigated. The internal structure and chemical composition of the composite aerogels were analyzed by using characterization methods. Finally, the mechanism of enhancement of thermal-mechanical of the composite aerogels is further discussed. The results show that GA can effectively enhance the thermal-mechanical properties of PI aerogel, and the appropriate freezing rate can form a dense pore structure inside the composite aerogel to reduce the thermal conductivity and improve the mechanical property. Moreover, the thermal runaway protection result demonstrated that the composite aerogel significantly delayed the time of thermal runaway of the lithium battery.

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来源期刊

ACS Applied Materials & Interfaces 工程技术-材料科学：综合

CiteScore

16.00

自引率

6.30%

发文量

4978

审稿时长

1.8 months

期刊介绍： ACS Applied Materials & Interfaces is a leading interdisciplinary journal that brings together chemists, engineers, physicists, and biologists to explore the development and utilization of newly-discovered materials and interfacial processes for specific applications. Our journal has experienced remarkable growth since its establishment in 2009, both in terms of the number of articles published and the impact of the research showcased. We are proud to foster a truly global community, with the majority of published articles originating from outside the United States, reflecting the rapid growth of applied research worldwide.