Metallic textiles for flexible wearable lithium ion batteries
View Patent ↗This disclosure provides a method for preparing a current collector. The method includes: (1) anchoring vinyl groups onto the surface of textiles through the silanization between hydroxyl groups and coupling agents; (2) synthesizing polyelectrolyte brushes through in-situ radical polymerization; and (3) obtaining catalyst ions on the polyelectrolyte brushes through ion-exchange and obtaining metal-coated layers through subsequent electroless deposition). The current collector according to the present disclosure has high electrical conductivity and excellent mechanical flexibility, and thus the lithium ion battery including the same is suitable for portable and wearable electronic devices.
1. A method for preparing a current collector, comprising:
(1) anchoring vinyl groups onto the surface of a textile through the silanization of the hydroxyl groups on the surface of the textile with a coupling agent, wherein the coupling agent is γ-methacryloxypropyltrimethoxysilane;
(2) synthesizing polyelectrolyte brushes on the surface of the textile through in-situ radical polymerization;
(3) forming catalyst ions on the polyelectrolyte brushes through ion-exchange and forming a metal-coated layer through subsequent electroless deposition.
2. The method according to claim 1 , wherein the catalyst ions are PdCl 4 2− .
3. The method according to claim 1 , wherein the metal-coated layer is a copper-coated layer or a nickel-coated layer.
4. The method according to claim 1 , wherein the textile is formed from at least one of cotton and polyester.
5. A current collector, being prepared by the method according to claim 1 .
6. The current collector according to claim 5 , wherein the current collector has a sheet resistance of less than 0.25 ohms/square.
7. A lithium ion battery, comprising the current collector according to claim 5 .
8. The lithium ion battery according to claim 7 , wherein an anode material contains Li 4 Ti 5 O 12 .
9. The lithium ion battery according to claim 7 , wherein a cathode material contains LiFePO 4 .
10. The current collector according to claim 5 , wherein the catalyst ions are PdCl 4 2− .
11. The current collector according to claim 5 , wherein the metal-coated layer is a copper-coated layer or a nickel-coated layer.
12. The current collector according to claim 5 , wherein the textile is formed from at least one of cotton and polyester.
13. The lithium ion battery according to claim 7 , wherein the current collector has a sheet resistance of less than 0.25 ohms/square.