Patent · US Active

Method for processing Ni-rich electrode active materials

US11862795B2 · kind B2 · utility

0Cited by

2References

8Claims

0Family size

Assignee

BASF SE

Inventors

Christoph ERK · Ludwigshafen, DE
Thomas Letzelter · Ludwigshafen, DE
Markus Hoelzle · Diemelstraße, US
Carsten SUELING · Bischofswerda, DE

Key dates

Filing date	Jun 17, 2019
Grant date	Jan 2, 2024
Priority date	—
Expiry date	Jan 5, 2041

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Process for modifying an electrode active material according to general formula Li1+xTM1−xO2, wherein TM contains a combination of Ni and at least one transition metal selected from Co and Mn, and, optionally, at least one metal selected from Al, Ba, and Mg and, optionally, one or more transition metals other than Ni, Co, and Mn, wherein at least 75 mole-% of TM is Ni, and x is in the range of from −0.05 to 0.2, said process comprising the steps of (a) treating said Li1+xTM1−xO2 with an aqueous medium with a pH value of at least 5 and up to 14, (b) removing said aqueous medium from treated Li1+xTM1−xO2 by way of a solid-liquid separation, wherein steps (a) and (b) are commenced with a maximum time difference of 3 minutes. In addition, the present invention is directed towards Ni-rich electrode active materials.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.