Samsung patents cheaper solid-state battery material using common metals
Samsung describes a new type of solid electrolyte for lithium batteries that uses a mix of common, inexpensive metals like sodium, magnesium, and silicon. By swapping out rare elements for these cheaper alternatives, the material aims to conduct ions effectively while lowering production costs.
In the filing’s own words
A lithium garnet material has the formula Li 7-w La 3-x (A x1 B x2 C x3)Zr 2-y (C y1 D y2 E y3)O 12, where −0.2≤w≤0.2, A is one or a combination of Na + and K +, B is one or a combination of two or more of Mg 2+, Ca 2+, Sr 2+, and Ba 2+, and C is one or a combination of two or more of Y 3+, Sc 3+, and Ce 3+ on the La 3+ site, and D is one or a combination of two or more of Si 4+, Sn 4+, Ti 4+, and Ce 4+ and E is one or a combination of two or more of Sb 5+, Bi 5+, Ta 5+, and Nb 5+ on the Zr 4+ site, 0<x<2, 0<y<2, and x1+x2+x3=x and y1+y2+y3=y either satisfy a charge balance mechanism with their respective doping site or satisfy any combination that maintains the charge neutrality of the material.
What exactly they claim (claim 1)
1. A lithium garnet material having the following formula: where −0.2≤w≤0.2, A is one or a combination of Na + and K +, B is one or a combination of two or more of Mg 2+, Ca 2+, Sr 2+, and Ba 2+, and C 1 is one or a combination of two or more of Y 3+, Sc 3+, and Ce 3+, and C 2 is one or a combination of two or more of Y 3+, Sc 3+, and Ce 3+, D is one or a combination of two or more of Si 4+, Sn 4+, Ti 4+, and Ce 4+ and E is one or a combination of two or more of Sb 5+, Bi 5+, Ta 5+, and Nb 5+, 0.2<x<3, 0<y<2, 0≤x1<3, 0≤x2<3, 0≤x3<3, 0≤y1<2, 0<y2<2, and 0≤y3<2, and x1+x2+x3=x and y1+y2+y3=y, when y1>0, y3 is 0 or when y3>0, y1 is 0, either satisfy a charge balance mechanism with their respective doping site or satisfy any combination that maintains charge neutrality of the material.
Facts
- Company
- Samsung (SAMSUNG ELECTRONICS CO., LTD.)
- Official title
- Low-cost multi-cationic li-garnet as a solid-state ionic conductor for lithium batteries
- Patent number
- US12770913B2
- Application number
- 18113431
- Filed
- Feb 23, 2023
- Granted
- Oct 20, 2026
- Inventors
- 3
- Claims
- 19
Classified under
H01M 10/0562 Electricity & electronicsH01M 10/052 Electricity & electronicsH01M 2300/0071 Electricity & electronicsMore from Samsung in Batteries & energy
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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.