Granted Patent
B2
US 12,322,832 · App. 18/742,496 · Granted Jun 3, 2025
Nanoporous separators for batteries and related manufacturing methods
Inventors:
Steven A. Carlson (Cambridge, MA); Benjamin Sloan (Exeter, NH); David W. Avison (Boxborough, MA)
Assignee:
LG Energy Solution, Ltd.
H01M50/446H01G11/20H01G11/50H01G11/52H01M10/052H01M10/0525H01M10/0585H01M50/46H01M4/505H01M4/525Y02E60/13
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Abstract
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.
Claims (13)
1. A lithium-ion battery comprising:
an anode,
a cathode, and
a porous polyolefin separator interposed between the cathode and anode, wherein the porous separator comprises boehmite and a dianionic compound complexed to the separator, wherein the dianionic compound is an anthraquinone disulfonate (AQdiS) or wherein the dianionic compound functions as a photoinitiator.
2. The battery of claim 1 , wherein the dianionic compound contains anionic groups selected from the group consisting of sulfonates, carbonates, and combinations thereof.
3. The battery of claim 1 , wherein the dianionic compound is an anthraquinone disulfonate (AQdiS).
4. The battery of claim 3 , wherein the AQdiS is a sodium salt or a lithium salt.
5. The battery of claim 1 , wherein the dianionic compound is complexed to the separator via a 2%, 5%, 8% or a 10% or greater solution of dianionic compound.
6. The battery of claim 1 , wherein the porous separator is nanoporous.
7. The battery of claim 6 , wherein the average pore size of the separator is less than about 100 nanometers or less than 50 nanometers.
8. The battery of claim 1 , wherein the dianionic compound functions as a photoinitiator.
9. The battery of claim 1 , wherein the dianionic compound is capable of oxidizing lithium metal dendrites.
10. The battery of claim 1 , wherein the dianionic compound complexes with any nickel, manganese, or other transition metal ions that may diffuse into the separator.
Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Jun 13, 2024
From: CARLSON, STEVEN A.; SLOAN, BENJAMIN; AVISON, DAVID W.
To: OPTODOT CORPORATION
Reel/Frame 067720/0376 →
NUNC PRO TUNC ASSIGNMENT
Recorded Jun 13, 2024
From: OPTODOT CORPORATION
To: LG ENERGY SOLUTION, LTD.
Reel/Frame 067720/0380 →
Continuity (8)
Provisional Application
62231539
· Jul 9, 2015
Provisional Application
62178633
· Apr 15, 2015
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