Patent Number: 6,168,888

Title: Spinel-type lithium-manganese oxide containing heteroelements, preparation process and use thereof

Abstract: A high-performance spinel-type lithium-manganese oxide for use as a material for a positive electrode of a Li secondary battery with inhibited Mn dissolution in an organic electrolyte, which is represented by the following formula: wherein { } represents the oxygen tetrahedral sites in the spinel structure and [ ] represents the oxygen octahedral sites in the spinel structure, 0<x.ltoreq.0.33, 0<y.ltoreq.1.0, -0.5<d<0.8, and M represents at least one heteroelement other than Li and Mn, is disclosed.

Inventors: Iwata; Eiichi (Yamaguchi-ken, JP), Takahashi; Ken-ichi (Yamaguchi-ken, JP), Mori; Takashi (Yamaguchi-ken, JP)

Assignee: Tosoh Corporation

International Classification: C01G 49/00 (20060101); C01G 53/00 (20060101); C01G 45/00 (20060101); H01M 4/48 (20060101); H01M 4/50 (20060101); H01M 10/36 (20060101); H01M 10/40 (20060101); H01M 004/50 (); H01M 004/88 (); C01G 045/12 ()

Expiration Date: 01/02/2018