A cellulose-based lithium-ion battery separator with regulated ionic transport and high thermal stability for extreme environments  

作　　者：Kun-Peng Yang Song Xie Zi-Meng Han Hao-Cheng Liu Chong-Han Yin Wen-Bin Sun Zhang-Chi Ling Huai-Bin Yang De-Han Li Qing-Fang Guan Shu-Hong Yu 

机构地区：[1]Department of Chemistry,New Cornerstone Science Laboratory,Institute of Biomimetic Materials&Chemistry,Anhui Engineering Laboratory of Biomimetic Materials,Division of Nanomaterials&Chemistry,Hefei National Research Center for Physical Sciences at the Microscale,University of Science and Technology of China,Hefei 230026,China [2]Institute of Innovative Materials,Department of Materials Science and Engineering,Department of Chemistry,Southern University of Science and Technology,Shenzhen 518055,China

出　　处：《Nano Research》2025年第1期315-322,共8页纳米研究（英文版）

基　　金：supported by the Strategic Priority Research Program of the Chinese Academy of Sciences(No.XDB0450402);the National Key Research and Development Program of China(Nos.2018YFE0202201 and 2021YFA0715700);the National Natural Science Foundation of China(Nos.22293044,U1932213,51732011,22105194,and 92163130);the Major Basic Research Project of Anhui Province(No.2023z04020009);the New Cornerstone Investigator Program;carried out at the USTC Center for Micro and Nanoscale Research and Fabrication。

摘　　要：Separators play a critical role in lithium-ion batteries.However,the restrictions of thermal stability and inferior electrical performance in commercial polyolefin separators significantly limit their applications under harsh conditions.Here,we report a cellulose-assisted self-assembly strategy to construct a cellulose-based separator massively and continuously.With an ultrahigh ionic conductivity in electrolytes of 3.7 mS·cm^(-1) and the ability to regulate ion transport,the obtained separator is a promising alternative for high-performance lithium-ion batteries.In addition,integrated with high thermal stability,the cellulose-based separator endows batteries with high safety at high temperatures,greatly expanding the application scenarios of energy storage devices in extreme environments.

关 键 词：lithium-ion batteries bio-inspired materials battery separators cellulose nanofiber ultrahigh ionic conductivity high safety 

分 类 号：TM912[电气工程—电力电子与电力传动]