微纤化纤维增强锂离子电池纸基隔膜的制备及性能研究OA
Preparation and Performance of MFC-reinforced Paper-based Lithium-ion Battery Separators
本研究通过添加微纤化纤维素(MFC)调节隔膜的孔隙结构,并分析MFC对隔膜孔隙结构的影响.对制备得到的纸基隔膜的力学性能、热尺寸稳定性、孔隙率、透气度、孔径及孔径分布等进行分析,并与商业隔膜Celgard2325进行对比,论证了MFC增强的纸基隔膜作为锂离子电池隔膜的潜力.结果表明,当MFC添加量为10%时,制备得到的MFC-10纸基隔膜性能稳定,平均孔径为2.124 μm,最大孔径为3.276 μm,孔隙率为69%,远高于Cegard2325的39%,电解液吸收率为263%,电解液浸入高度为35.6 mm,表明MFC-10隔膜具有优于Celgard2325的电解液润湿性能.此外,MFC-10纸基隔膜的电池样品在0.2、0.5及1 C下均具有较优于Celgard2325的倍率性能.
This study analyzed the effects of MFC on the pore structure of paper-based separators by incorporating MFC.The mechanical prop-erties,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 sepa-rators 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%,signifi-cantly 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 su-perior rate performance compared to Celgard2325 at discharge rates of 0.2,0.5,and 1 C.
刘添裕;刘颖;朝鲁门;刘文
华南理工大学轻工科学与工程学院,广东 广州,510640||新乡白鹭投资集团有限公司,河南 新乡,453006华南理工大学轻工科学与工程学院,广东 广州,510640中国制浆造纸研究院有限公司,北京,100102中国制浆造纸研究院有限公司,北京,100102
轻工纺织
锂离子电池纸基隔膜微纤化纤维孔隙结构
paper-based separatorMFCpore structure
《中国造纸》 2026 (5)
39-48,10
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