Lithium ion battery diaphragm, preparation method thereof and lithium ion battery

Lithium ion battery diaphragm, preparation method thereof and lithium ion battery

The invention relates to the technical field of lithium ion batteries, in particular to a preparation method of a lithium ion battery diaphragm, the lithium ion battery diaphragm and a lithium ion battery. The preparation method of the lithium ion battery diaphragm comprises the following steps of:...

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Hauptverfasser: SU GUANGZHOU, MA MEIPIN, LI QIAO
Format: Patent
Sprache:chi ; eng
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BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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creator SU GUANGZHOU
MA MEIPIN
LI QIAO
description The invention relates to the technical field of lithium ion batteries, in particular to a preparation method of a lithium ion battery diaphragm, the lithium ion battery diaphragm and a lithium ion battery. The preparation method of the lithium ion battery diaphragm comprises the following steps of: carrying out melt blending on polypropylene resin, a stabilizer, a nucleating agent, silane coupling agent modified conductive carbon black and silane coupling agent modified carbon nanotubes to obtain polypropylene particles; putting polypropylene particles, a dispersion medium, a dispersing agent and a surfactant into a reaction kettle together, then continuously introducing a foaming agent, heating and pressurizing, and starting foaming after a preset temperature and a preset pressure are reached, so as to obtain conductive polypropylene beads; and preparing a conductive polypropylene film layer from the conductive polypropylene beads, and compounding the conductive polypropylene film layer with a polyethylene f
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subjects BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
title Lithium ion battery diaphragm, preparation method thereof and lithium ion battery
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