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US 12,542,304 B2Granted
Anode, lithium metal battery including the same, and method of manufacturing the lithium metal battery
AssigneeAgency for Defense Development
InventorsYusong Choi, Tae Young Ahn, SangHyeon Ha, Jae Seong Yeo, EunJi Yoo, Jae In Lee
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Abstract
Provided is an anode including a metal porous body having a foam structure, a lithium-philic film formed on a surface of the metal porous body, and lithium impregnated into pores of the metal porous body.
Claims9
A lithium metal battery comprising:
- an anode and a cathode;
- a separator disposed between the anode and the cathode;
- and
- an aqueous electrolyte impregnated in all or part of the anode, the cathode, and the separator,
- wherein the anode includes a metal porous body having a foam structure, a lithium-philic film formed on a surface of the metal porous body, and lithium impregnated into pores of the metal porous body,
- wherein the metal porous body includes at least one of nickel, chromium, aluminum, iron, and molybdenum, and the lithium-philic film includes at least one of oxide, silicon, aluminum, or gold,
- wherein the metal porous body includes nickel in a range from 40 wt % to 55 wt %, chromium in a range from 20 wt % to 30 wt %, and aluminum in a range from 20 wt % to 30 wt % based on the total weight of the metal porous body, and an average size of the pores of the metal porous body is in a range from 200 μm to 600 μm,
- wherein the cathode includes a ternary cathode active material including nickel, cobalt, and manganese,
- wherein the aqueous electrolyte includes water and lithium salts, and the lithium salts include lithium bis (trifluoromethanesulfonyl) imide (LiTFSI), and the content of the lithium salts are 45 wt % or more based on the total weight of the aqueous electrolyte.
6 more elements
A method of manufacturing a lithium metal battery, the method comprising:
- manufacturing an anode;
- manufacturing a cathode;
- manufacturing a separator;
- and
- assembling the manufactured the anode, the cathode, and the separator in a case and injecting an aqueous electrolyte in the case,
- wherein the manufacturing of the anode includes manufacturing a metal porous body, forming a lithium-philic film on a surface of the metal porous body, and impregnating the metal porous body with molten lithium,
- wherein the metal porous body includes at least one of nickel, chromium, aluminum, iron, and molybdenum, and the lithium-philic film includes at least one of oxide, silicon, aluminum, or gold,
- wherein the metal porous body includes nickel in a range from 40 wt % to 55 wt %, chromium in a range from 20 wt % to 30 wt %, and aluminum in a range from 20 wt % to 30 wt % based on the total weight of the metal porous body, and an average size of the pores of the metal porous body is in a range from 200 μm to 600 μm,
- wherein the cathode includes a ternary cathode active material including nickel, cobalt, and manganese,
- wherein the aqueous electrolyte includes water and lithium salts, and the lithium salts include LiTFSI, and the content of the lithium salts are 45 wt % or more based on the total weight of the aqueous electrolyte.
7 more elements
Dependencies are inferred from the claim text.