Cross-linking modified polyethyleneimine solid electrolyte and application thereof

• Main Authors: FANG YINGJUN, ZHANG LINGZHI
• Format: Patent
• Language: Chinese; English
• Published: 30.07.2019
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; ELECTRICITY; GENERAL PROCESSES OF COMPOUNDING; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

The invention discloses a cross-linking polymer solid electrolyte. Raw materials of the cross-linking polymer solid electrolyte comprise modified polyethyleneimine, a cross-linking agent and lithium salt. An interpenetrating network material is formed by heating and cross-linking reaction of the modified polyethyleneimine, the cross-linking agent and the lithium salt. The cross-linking polymer solid electrolyte has high thermal stability, high ionic conductivity and a high electrochemical window, and can be widely applied in electrochemical energy storage devices such as lithium ion batteries,supercapacitors and solar batteries. 本发明公开了一种交联型聚合物固态电解质，其原料包括改性聚乙烯亚胺、交联剂和锂盐，由改性聚乙烯亚胺、交联剂和锂盐经加热交联反应形成互穿网络型材料；具有更高的热稳定性和离子电导率和电化学窗口，可广泛应用于锂离子电池、超级电容器或太阳能电池等电化学储能器件。