Patent · US Active

Lithium metal phosphates, method for producing the same and use thereof as electrode material

US7807121B2 · kind B2 · utility

19Cited by

5References

39Claims

0Family size

Assignee

Sud Chemie, Inc. · US

Inventors

Gerhard Nuspl · Munich, DE
Lucia Wimmer · Landshut, DE
Max Eisgruber · Bruckberg, DE

Key dates

Filing date	Nov 14, 2004
Grant date	Oct 5, 2010
Priority date	—
Expiry date	Dec 18, 2027

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2982
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention describes a process for producing a compound of the formula LiMPO4, in which M represents at least one metal from the first transition series, comprising the following steps: a) production of a precursor mixture, containing at least one Li+ source, at least one M2+ source and at least one PO43− source, in order to form a precipitate and thereby to produce a precursor suspension; b) dispersing or milling treatment of the precursor mixture and/or the precursor suspension until the D90 value of the particles in the precursor suspension is less than 50 μm; and c) the obtaining of LiMPO4 from the precursor suspension obtained in accordance with b), preferably by reaction under hydrothermal conditions. The material obtainable by this process has particularly advantageous particle size distributions and electrochemical properties when used in electrodes.

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