Nanoporous separators for batteries and related manufacturing methods
Provided is a lithium battery, wherein the battery comprises an anode, a cathode, wherein the cathode comprises one or more transition metals, an electrolyte, and a porous separator interposed between the cathode and anode, wherein the separator comprises an anionic compound. Also provided are methods of manufacturing such batteries.
1. A method of manufacturing a battery comprising the steps of:
(a) providing an anode;
(b) providing a cathode that comprises one or more transition metal oxides;
(c) providing a porous separator that comprises boehmite and an anionic compound that comprises an anthraquinone;
(d) providing a lithium metal layer on a surface of the separator;
(e) interposing the separator and the lithium metal layer between the anode and the cathode;
(f) providing an electrolyte; and
(g) assembling so as to provide the battery.
2. The method of claim 1 , further comprising the step of prelithiating the anode with lithium from the lithium metal layer.
3. The method of claim 1 , wherein the lithium metal layer is deposited by coating.
4. The method of claim 1 , wherein the lithium metal layer is deposited by vacuum deposition.
5. The method of claim 1 , wherein the battery is a lithium ion battery.
6. The method of claim 1 , wherein the separator is a free-standing separator.
7. The method of claim 1 , wherein the one or more transition metals oxides are selected from a group consisting of manganese, nickel, and cobalt.
8. The method of claim 2 , wherein prelithiation of the anode occurs when the battery is charged and discharged in a first charge-discharge cycle.
9. A method of manufacturing a battery comprising the steps of:
(a) providing an anode;
(b) providing a cathode that comprises one or more transition metal oxides;
(c) providing a porous separator that comprises an inorganic oxide and an anionic compound that comprises an anthraquinone;
(d) providing a lithium metal layer on a surface of the separator;
(e) interposing the separator and the lithium metal layer between the anode and the cathode;
(f) providing an electrolyte; and
(g) assembling so as to provide the battery.
10. The method of claim 9 , further comprising the step of prelithiating the battery with lithium from the lithium metal layer.
11. The method of claim 9 , wherein the lithium metal layer is deposited by coating.
12. The method of claim 9 , wherein the lithium metal layer is deposited by vacuum deposition.
13. The method of claim 9 , wherein the battery is a lithium ion battery.
14. The method of claim 9 , wherein the separator is a free-standing separator.
15. The method of claim 9 , wherein the one or more transition metals oxides are selected from a group consisting of manganese, nickel, and cobalt.
16. The method of claim 10 , wherein prelithiation of the anode occurs when the battery is charged and discharged in a first charge-discharge cycle.
17. The method of claim 1 , wherein the separator has an average pore size of less than 50 nm.
18. The method of claim 1 , wherein the separator further comprises a second anionic group.
19. The method of claim 1 , wherein the anode comprises silicon.
20. The method of claim 9 , wherein the separator has an average pore size of less than 50 nm.