Stabilized lithium metal powder for Li-ion application, composition and process

Inventors: Marina Yakovleva (Gastonia, NC); Yuan Gao (Greenwood Village, CO); Kenneth Brian Fitch (Cherryville, NC); B. Troy Dover (Kings Mountain, NC); Prakash Thyaga Palepu (Gastonia, NC); Jian-xin Li (Edison, NJ); Brian Anthony Christopher Carlin (Lawrenceville, NJ); Yangxing Li (Belmont, NC)

Assignee: FMC Corporation

H01M4/366 B22F1/0062 B22F1/02 H01M4/131 H01M4/133 H01M4/134 H01M4/1315 H01M4/386 H01M4/387 H01M4/40 H01M4/485 H01M4/587 H01M4/628 B22F1/0077 B22F2998/10 B22F2999/00 H01M10/052 H01M2004/027

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Quick Facts

Patent No.: US 10,141,568
App. No.: 15/830,707
Granted: Nov 27, 2018
Kind: B2

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Abstract

The present invention provides a lithium metal powder protected by a wax. The resulting lithium metal powder has improved stability and improved storage life.

Claims (1)

1. A stabilized lithium metal powder, wherein each individual particle of stabilized lithium metal powder is coated with a wax, wherein the stabilized lithium metal powder is stable in N-methyl-2-pyrrolidine or gamma butyrolactone, has a mean diameter of from 10 μm to 200 μm in N-methyl-2-pyrrolidine or gamma butyrolactone, and wherein the wax is a continuous layer and has a thickness of 20 nm to 200 nm.

Assignments (8)

RELEASE OF SECURITY INTEREST Recorded Jul 30, 2025

From: RIO TINTO FINANCE PLC

To: LIVENT USA CORP.; ARCADIUM LITHIUM INTERMEDIATE IRL LIMITED

Reel/Frame 071886/0172 →

RELEASE OF SECURITY INTEREST IN PATENT - REEL/FRAME 061373/0148 Recorded Mar 6, 2025

From: C ITIBANK, N.A.

To: LIVENT USA CORP.

Reel/Frame 070433/0732 →

RELEASE OF SECURITY INTEREST IN PATENT - REEL/FRAME 047327/0058 AND 050900/0939 Recorded Mar 6, 2025

From: CITIBANK, N.A.

To: LIVENT USA CORP.