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Preparation and Performance of MFC-reinforced Paper-based Lithium-ion Battery Separators
Received:December 02, 2025  Revised:January 26, 2026
DOI:10.11980/j.issn.0254-508X.2026.05.005
Key Words:paper-based separator  MFC  pore structure
Author NameAffiliationPostcode
LIU Tianyu* 1School of Light Industry and Engineering, South China University of Technology, Guangzhou, Guangdong Province, 510640
2Xinxiang Bailu Investment Group Co.,Ltd., Xinxiang, He’nan Province, 453006 
453006
LIU Ying* 1School of Light Industry and Engineering, South China University of Technology, Guangzhou, Guangdong Province, 510640 510640
CHAO Lumen* 3China National Pulp and Paper Research Institute Co., Ltd., Beijing, 100102 100102
LIU Wen 3China National Pulp and Paper Research Institute Co., Ltd., Beijing, 100102 100102
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Abstract:This study analyzed the effects of MFC on the pore structure of paper-based separators by incorporating MFC. The mechanical properties, thermal dimensional stability, porosity, air permeability, pore size, and pore size distribution of the prepared paper-based separators were analyzed and compared with the commercial Celgard2325 separator. This demonstrated the potential of MFC-reinforced paper-based separators for use in lithium-ion battery separators. The results indicated that the MFC-10 paper-based separator, prepared with 10% MFC content, exhibits stable performance. Its average pore size was 2.124 µm, with a maximum pore size of 3.276 µm. The porosity reached 69%, significantly higher than Celgard2325’s 39%. Electrolyte absorption rate was 263%, with an electrolyte impregnation height of 35.6 mm, indicating superior electrolyte wetting performance compared to Celgard2325. Battery samples using the MFC-10 paper-based separator demonstrated superior rate performance compared to Celgard2325 at discharge rates of 0.2, 0.5, and 1 C.
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