Wrinkled MXene modified diaphragm for lithium ion battery and preparation method of wrinkled MXene modified diaphragm

According to the wrinkled MXene modified diaphragm for the lithium ion battery and the preparation method of the wrinkled MXene modified diaphragm, due to the introduction of the wrinkled MXene (at) Mg (OH) 2 nanosheet, the mechanical strength and the heat resistance of the diaphragm are greatly imp...

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Bibliographic Details
Main Authors ZHANG LIBIN, ZHAO HAIYU, LI FAN, SHEN YADING
Format Patent
LanguageChinese
English
Published 19.08.2022
Subjects
Online AccessGet full text

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Summary:According to the wrinkled MXene modified diaphragm for the lithium ion battery and the preparation method of the wrinkled MXene modified diaphragm, due to the introduction of the wrinkled MXene (at) Mg (OH) 2 nanosheet, the mechanical strength and the heat resistance of the diaphragm are greatly improved, the adhesion of the diaphragm to a pole piece and the wettability of the diaphragm to an electrolyte are greatly improved, and the problem of powder falling of a PMMA coating in the early-stage coating process and the later-stage battery cell manufacturing process is greatly solved; the wetting agent is branched chain dodecyl (polyoxyisopropenyl) 8 sodium sulfate, and the concentration of the wetting agent in the coating layer is limited to be 2.5 * 10 <-5 >-1.5 * 10 <-3 > mol/L, so that the mechanical strength of the diaphragm and the infiltration viscosity of the diaphragm to a base membrane are improved, and the effective service life of the diaphragm is prolonged; the hyperbranched grafted multi-arm poly
Bibliography:Application Number: CN202210589891