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SamsungGranted patentBatteries & energyInterest 6/10

Samsung patents solid electrolyte for safer lithium-ion batteries

Patent drawing
Patent drawing from the official filing.

Samsung has been granted a patent for a new type of solid material that can move lithium ions between battery parts. This 'garnet-type' compound uses a specific mix of elements like lithium, lanthanum, and hafnium to conduct electricity without the flammable liquids found in standard batteries.

Why it mattersSolid-state batteries are a major goal for the industry because they could make phones and cars safer and hold more power, though this specific chemical recipe is just one step in that long process.

In the filing’s own words

Disclosed is a solid state electrolyte comprising a compound of Formula 1 Li 7 - a * α - ( b - 4) * β - x ⁢ M α a ⁢ La 3 ⁢ Hf 2 - β ⁢ M β b ⁢ O 12 - x - δ ⁢ X x ( 1) wherein M a is a cationic element having a valence of a+; M b is a cationic element having a valence of b+; and X is an anion having a valence of −1, wherein, when M a includes H, 0≤α≤5, otherwise 0≤α≤0.75, and wherein 0≤ß≤1.5, 0≤x≤1.5, and (a*α+(b−4)ß+x)>0, 0≤δ≤1.

What exactly they claim (claim 1)

1. A solid state electrolyte comprising a compound of Formula 1 Li 7 - a * α - ( b - 4) * β - x ⁢ M α a ⁢ La 3 ⁢ Hf 2 - β ⁢ M β b ⁢ O 12 - x - δ ⁢ X x ( 1) wherein M a is a cationic element having a valence of a+; M b is a cationic element having a valence of b+; and X is an anion having a valence of −1, wherein, when M a comprises H, 0≤α≥5, otherwise 0≤α≤0.75, and wherein 0<ß≤1.5, 0<x≤1.5, and (a*α+(b−4)ß+x)>0, 0<δ≤1.

Facts

Company
Samsung (Samsung Electronics Co., Ltd.)
Official title
Garnet-type lithium-ion solid-state conductor
Patent number
US12756004B2
Application number
17874637
Filed
Jul 27, 2022
Granted
Oct 6, 2026
Inventors
3
Claims
24

Classified under

H01M 10/0562 Electricity & electronicsC01G 27/006 Chemistry & metalsH01M 10/0525 Electricity & electronicsH01M 50/443 Electricity & electronicsH01M 50/451 Electricity & electronicsH01M 50/497 Electricity & electronics
Read the full filing (official PDF) ↗ Open in the Patent Tracker

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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.