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Title: Protective coating on positive lithium-metal-oxide electrodes for lithium batteries

Patent ·
OSTI ID:1175747
; ;

A positive electrode for a non-aqueous lithium cell comprising a LiMn2-xMxO4 spinel structure in which M is one or more metal cations with an atomic number less than 52, such that the average oxidation state of the manganese ions is equal to or greater than 3.5, and in which 0.ltoreq.x.ltoreq.0.15, having one or more lithium spine oxide LiM'2O4 or lithiated spinel oxide Li1+yM'2O4 compounds on the surface thereof in which M' are cobalt cations and in which 0.ltoreq.y.ltoreq.1.

Research Organization:
The University Of Chicago, Chicago, IL (United States); Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
W-31-109-ENG-38
Assignee:
The University of Chicago (Chicago, IL)
Patent Number(s):
7,049,031
Application Number:
10/353,385
OSTI ID:
1175747
Country of Publication:
United States
Language:
English

References (7)

Complete blocking of Mn3+ ion dissolution from a LiMn2O4 spinel intercalation compound by Co3O4 coating journal January 2001
Electrochemical Properties of LiCoO[sub 2]-Coated LiMn[sub 2]O[sub 4] Prepared by Solution-Based Chemical Process journal January 2001
High-Performance ZrO2-Coated LiNiO2 Cathode Material journal January 2001
Improvement of the rate capability of LiMn2O4 by surface coating with LiCoO2 journal December 2001
Correlation of capacity fading of LiMn2O4 cathode material on 55°C cycling with their surface area measured by a methylene blue adsorption journal January 2001
Surface treatments of Li1+xMn2−xO4 spinels for improved elevated temperature performance journal December 1997
Improvement of Structural Stability of LiMn[sub 2]O[sub 4] Cathode Material on 55°C Cycling by Sol-Gel Coating of LiCoO[sub 2] journal January 1999

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