Procedure to optimize materials for cathodes and cathode material having enhanced electrochemical properties

US9269950B2 · kind B2 · utility

Assignees

• Johnson Matthey Public Limited Company · GB
• Bathium Canada Inc. · CA

Inventors

• Denis Geoffroy · Westmount, CA
• Guoxian Liang · Saint-Hyacinthe, CA
• Michel Gauthier · Elliot Lake, CA
• Thorsten Lahrs · Bad Vilbel, DE
• Nathalie Ravet · Montréal, CA
• Michel Parent · Versailles, FR
• Alain Vallee · Varennes, CA
• Patrick LEBLANC · Boucherville, CA
• Frederic COTTON · Montréal, CA

Key dates

• Filing date: Dec 4, 2012
• Grant date: Feb 23, 2016
• Expiry date: Mar 28, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E60/10
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A material C-AxM(XO4)y that is of particles of a compound of the formula AxM(XO4)y, wherein said particles include a carbon deposit deposited by means of pyrolysis on at least a portion of the surface thereof, and where: A is Li alone or partially replaced by at most 10 atomic % of Na or K; M is Fe(II), or Mn(II), or mixtures thereof alone or partially replaced by at most 30 atomic % of one or more metals selected from Mn, Ni and Co and/or at most 5% of Fe(III); XO4 is PO4 alone or partially replaced by at most 10 molar % of at least one group selected from SO4, SiO4 and MoO4; and where said material has a calcium impurity content of lower than about 1000 ppm.