Invention Grant
- Patent Title: High-voltage positive electrode material having a spinel structure based on nickel and manganese for lithium cell batteries
- Patent Title (中): 具有锂电池用镍和锰的尖晶石结构的高压正极材料
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Application No.: US11972263Application Date: 2008-01-10
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Publication No.: US07754384B2Publication Date: 2010-07-13
- Inventor: Sébastien Patoux , Frédéric Le Cras , Carole Bourbon , Séverine Jouanneau
- Applicant: Sébastien Patoux , Frédéric Le Cras , Carole Bourbon , Séverine Jouanneau
- Applicant Address: FR Paris
- Assignee: Commissariat A l'Energie Atomique
- Current Assignee: Commissariat A l'Energie Atomique
- Current Assignee Address: FR Paris
- Agency: Oliff & Berridge, PLC
- Priority: FR0508737 20050825
- Main IPC: H01M4/02
- IPC: H01M4/02 ; H01M4/50 ; C01G45/12 ; C01D1/02
Abstract:
A spinel structure compound of the formula LiNi0.4Mn1.6O4-δ, wherein δ>0, has a lattice parameter of from 8.179 to 8.183 Å. The compound may be prepared by mixing carbonated precursors under stoichiometric conditions to produce a mixture, subjecting the mixture to a first heat treatment at a temperature of from 500 to 700° C., and then subjecting the mixture to one or more annealing treatments at a temperature of from 700 to 950° C., followed by cooling in a medium containing oxygen. The spinel structure compound may be used as an electrochemically active material in an electrode, for example an electrode of a battery.
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