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 - 20 . (canceled)
21 . A lithium-ion battery comprising:
an electrode,
a separator in contact with a first side of the electrode, and
a current collector layer in contact with a second side of the electrode, wherein at least a portion of the separator is wider than the electrode and the current collector layer such that the electrode and current collector layer do not overlie said portion, and
a polymer layer disposed on said portion such that the electrode and current collector layer do not overlie the polymer layer.
22 . The lithium-ion battery of claim 21 , wherein the electrode is a cathode that comprises lithium nickel manganese cobalt oxide.
23 . The lithium-ion battery of claim 21 , wherein the electrode comprises carboxylate.
24 . The lithium-ion battery of claim 21 , wherein the electrode is a anode that comprises graphite.
25 . The lithium-ion battery of claim 21 , wherein the current collector comprises aluminum.
26 . The lithium-ion battery of claim 21 , wherein the current collector comprises copper.
27 . The lithium-ion battery of claim 21 , further comprising an electrolyte that comprises LiPF 6 .
28 . The lithium-ion battery of claim 21 , further comprising an electrolyte that comprises one or more of ethylene carbonate and ethyl methyl carbonate.
29 . The lithium-ion battery of claim 21 , further comprising an electrolyte that comprises LiPF 6 , ethylene carbonate and ethyl methyl carbonate.
30 . The lithium-ion battery of claim 21 , wherein the separator comprises boehmite and an organic polymer.
31 . The lithium-ion battery of claim 21 , wherein the separator comprises at least 50% by weight of an aluminum boehmite and an organic polymer.
32 . The lithium-ion battery of claim 21 , wherein the separator comprises boehmite particles comprise a surface modified by an organic acid.
33 . The lithium-ion battery of claim 32 , wherein the organic acid comprises one or more of the following: sulfonic acid, toluenesulfonic acid, and carboxylic acid.
34 . The lithium-ion battery of claim 21 , wherein the separator comprises a porosity of 35-50%.
35 . The lithium-ion battery of claim 21 , wherein the lithium-ion battery comprises a jellyroll configuration.
36 . The lithium-ion battery of claim 21 , wherein
the electrode is a cathode that comprises lithium nickel manganese cobalt oxide;
the current collector comprises aluminum;
the lithium-ion battery comprises electrode is a anode that comprises graphite,
the anode comprises a current collector that comprises copper;
the lithium-ion battery further comprises an electrolyte that comprises LiPF 6 , ethylene carbonate and ethyl methyl carbonate; and
the separator comprises an inorganic oxide and an organic polymer.
37 . The lithium-ion battery of claim 36 , wherein the inorganic oxide comprises boehmite particles present in the separator by at least 50% by weight.
38 . The lithium-ion battery of claim 36 , wherein the separator comprises a porosity of 35-50%.
39 . The lithium-ion battery of claim 36 , wherein the wherein the inorganic oxide comprises boehmite particles that comprise a surface modified by an organic acid.
40 . The lithium-ion battery of claim 39 , wherein the organic acid comprises one or more of the following: sulfonic acid, toluenesulfonic acid, and carboxylic acid.