Highly-enhanced non-woven fabric lithium battery diaphragm and preparation method thereof

The invention belongs to the technical field of lithium battery diaphragms, and discloses a highly-enhanced non-woven fabric lithium battery diaphragm and a preparation method thereof.The highly-enhanced non-woven fabric lithium battery diaphragm comprises a high-temperature-resistant coating layer, a fiber network microporous layer and a high-modulus base cloth layer, the fiber network microporous layer is positioned between the high-temperature-resistant coating layer and the high-modulus base cloth layer. The highly-enhanced non-woven fabric lithium battery diaphragm prepared by the invention has the characteristics of high strength, good thermal stability, excellent electrolyte wettability, capability of inhibiting the growth of lithium dendrites and the like, can fully meet the requirements on cycle and safety performance of a lithium battery, and has relatively high application value and economic benefit. 本发明属于锂电池隔膜技术领域，公开了一种高增强型无纺布锂电池隔膜及其制备方法，高增强型无纺布锂电池隔膜包括耐高温涂料层、纤维网络微孔层和高模量基布层，所述纤维网络微孔层位于所述耐高温涂料层和所述高模