| abstract |
The invention provides a diaphragm, a preparation method thereof and a lithium ion battery containing the diaphragm. The diaphragm includes a polymer matrix and a slurry layer located inside and on the surface of the matrix; the polymer matrix contains a polymer substrate and a cured resin, and the slurry layer contains ceramic particles and a cured resin; the cured resin passes through the polymer The base material and the paste layer can be obtained by self-initiating UV-curable cross-linking resin cross-linking and curing. The prepared separator has excellent high-temperature resistance, the heat-resistant layer is not easy to fall off, and is easier to wind, prepare and apply. |