High temperature Li-ion battery cells utilizing boron nitride aerogels and boron nitride nanotubes
View Patent ↗This disclosure provides systems, methods, and apparatus related to Li-ion batteries. In one aspect an electrolyte structure for use in a battery comprises an electrolyte and an interconnected boron nitride structure disposed in the electrolyte.
1. An electrolyte structure for use in a battery comprising:
an electrolyte; and
a boron nitride aerogel disposed in the electrolyte.
2. The electrolyte structure of claim 1 , wherein the electrolyte comprises an organic electrolyte.
3. The electrolyte structure of claim 1 , wherein the electrolyte comprises a polymer mixed with a lithium salt.
4. The electrolyte structure of claim 1 , further comprising:
a plurality of titanium dioxide nanoparticles disposed in the electrolyte.
5. The electrolyte structure of claim 4 , wherein titanium dioxide nanoparticles of the plurality of titanium dioxide nanoparticles have a diameter of about 1 nanometer to 100 nanometers.
6. The electrolyte structure of claim 4 , wherein the plurality of titanium dioxide nanoparticles has a volume fraction of about 5% to 30% in the electrolyte structure.
7. The electrolyte structure of claim 1 , wherein the boron nitride aerogel has a thickness of about 250 nanometers to 1.5 microns.
8. The electrolyte structure of claim 1 , wherein the boron nitride aerogel has pore sizes of less than about 100 nanometers.
9. The electrolyte structure of claim 1 , wherein the electrolyte comprises a polymer mixed with an ionic liquid.
10. The electrolyte structure of claim 9 , wherein the polymer comprises polymethylmethacrylate and polyacrylonitrile dissolved in anisole.
11. The electrolyte structure of claim 9 , wherein the ionic liquid comprises PYR 14− TFSI-LiTFSI (PYR 14 : N-methyl-N-butylpyrrolidinium, TFSI: bis(trifluoromethylsufonyl)imide).
12. A battery comprising:
an anode;
a cathode; and
an electrolyte structure, the electrolyte structure being in contact with the cathode and with the anode, the electrolyte structure comprising:
an electrolyte; and
a boron nitride aerogel disposed in the electrolyte.
13. The battery of claim 12 , wherein the electrolyte structure further comprises a plurality of titanium dioxide nanoparticles disposed in the electrolyte.
14. The battery of claim 12 , wherein the battery is operable up to temperatures of about 190° C.
15. The battery of claim 12 , wherein the anode comprises lithium titanate (Li 4 Ti 5 O 12 ) or graphite.
16. The battery of claim 12 , wherein the cathode comprises lithium-rich manganese oxide (Li 1+x Mn 2−x O 4 ) or lithium cobalt oxide (LiCoO 2 ).
17. The battery of claim 12 , wherein the boron nitride aerogel has a thickness of about 250 nanometers to 1.5 microns.
18. The battery of claim 12 , wherein the boron nitride aerogel has pore sizes of less than about 100 nanometers.
19. The battery of claim 12 , wherein the electrolyte comprises a polymer mixed with an ionic liquid.
20. The battery of claim 12 , wherein the electrolyte comprises a polymer mixed with a lithium salt.