Process for making a cathode active material for a lithium ion battery

US11862784B2 · kind B2 · utility

Inventors

• Michael Metzger · Sunnyvale, US
• Hans-Hermann Beyer · Munich, DE
• Johannes Sicklinger · Munich, DE
• Daniel Pritzl · Munich, DE
• Benjamin Strehle · Munich, DE
• Hubert Gasteiger · Rochester, US
• Hadar SCLAR · Ramat Gan, IL
• Evan Erickson · Ramat Gan, IL
• Francis Amalraj Susai · Ramat Gan, IL
• Judith Grinblat · Ramat Gan, IL
• Doron Aurbach · Bnei Brak, IL
• Boris MARKOVSKY · Petah Tikva, IL

Key dates

• Filing date: Jun 22, 2018
• Grant date: Jan 2, 2024
• Expiry date: Aug 10, 2039

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E60/10
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A process for making a cathode active material for a lithium ion battery is described. The process includes (a) a step of synthesizing a mixed oxide of formula Li1+xTM1−xO2 at a temperature ranging from 750 to 1000° C. in an oxidizing atmosphere, where TM is a combination of two or more transition metals of Mn, Co and Ni and, optionally, at least one more metal of Ba, Al, Ti, Zr, W, Fe, Cr, K, Mo, Nb, Mg, Na and V, and x is a number ranging from zero to 0.2, (b) a step of cooling down the material obtained from step (a) to a temperature ranging from 100 to 400° C., (c) a step of adding at least one reactant of BF3, SO2 and SO3 at the temperature of 100 to 400° C., and (d) a step of cooling down to a temperature of 50° C. or below.