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US 12,689,095 B2Granted
Bifunctional separator, batteries containing, and method of manufacture thereof
AssigneeCity University of Hong Kong
InventorsChunyi Zhi, Yue Hou, Ze Chen
Life of this patent
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Abstract
A separator for a battery contains a MXene nanosheet, a poly (vinylidene fluoride-co-hexafluoropropylene) framework, and a physical isolation flame retardant dispersed within the poly (vinylidene fluoride-co-hexafluoropropylene) framework. The MXene nanosheet is affixed to the poly (vinylidene fluoride-co-hexafluoropropylene) framework. A separator manufacturing method for the separator herein and a battery manufacturing method are also included.
Claims13
A separator for a battery comprising a porous material including:
- A) Ti3C2Tx MXene nanosheets;
- and
- B) a single poly (vinylidene fluoride-co-hexafluoropropylene) (PVHF)-hydroxyapatite (HAP) layer having first and second sides, a Ti3C2Tx MXene nanosheet of the Ti3C2Tx MXene nanosheets is directly coated on each of the first and second sides of the single PVHF-HAP layer, wherein the PVHF-HAP layer has a hierarchical cross-linked structure of a network of HAP nanowires wrapped by bulk PVHF polymer chains such that the HAP nanowires are separated by the bulk PVHF polymer chains;
- wherein the Ti3C2Tx MXene nanosheet directly coated on the first side of the single PVHF-HAP layer is adapted to connect directly to a Li anode, and the Ti3C2Tx MXene nanosheet directly coated on the second side of the single PVHF-HAP layer is adapted to connect directly to a LiCoO2 cathode;
- and wherein the Ti3C2Tx MXene nanosheet is in the form of a plurality of Ti3C2Tx MXene flakes having an average diameter from about 2 μm to about 50 μm.
2 more elements
Dependencies are inferred from the claim text.