Multi-hydrogen-bond cross-linked cellulose/carboxylated polyimide nanofiber composite diaphragm as well as preparation method and application of multi-hydrogen-bond cross-linked cellulose/carboxylated polyimide nanofiber composite diaphragm

• Main Authors: YANG XIAOQING, LI XINKUN, ZHANG GUOQING, ZHANG BIRONG, DENG JIANHUI, XIE HANLIN
• Format: Patent
• Language: Chinese; English
• Published: 01.10.2021
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention provides a multi-hydrogen-bond cross-linked cellulose/carboxylated polyimide nanofiber composite diaphragm as well as a preparation method and application of the multi-hydrogen-bond cross-linked cellulose/carboxylated polyimide nanofiber composite diaphragm. Compared with the prior art, the composite diaphragm has the advantages that the heat stability and the hydrophilicity are further improved, and the composite diaphragm is environment-friendly, high in cost performance, good in mechanical property, super-strong in heat stability and excellent in electrochemical performance, and is a very promising green high-performance lithium ion battery composite diaphragm. 本发明提供了一种多氢键交联型纤维素/羧基化聚酰亚胺纳米纤维复合隔膜及其制备方法和用途。与现有技术相比，该复合隔膜进一步提高了热稳定性和亲水性，并且具有环保、高性价比、良好的机械性能、超强的热稳定性和优异的电化学性能，是一种非常有前途的绿色高性能锂离子电池复合隔膜。