Lithium metal fluorophosphate materials and preparation thereof
AssigneeValence Technology, Inc.
InventorsJeremy Barker, M. Yazid Saidi, Jeffrey Swoyer
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Abstract
The invention provides new and novel lithium-metal-fluorophosphates which, upon electrochemical interaction, release lithium ions, and are capable of reversibly cycling lithium ions. The invention provides a rechargeable lithium battery which comprises an electrode formed from the novel lithium-metal-fluorophosphates. The lithium-metal-fluorophosphates comprise lithium and at least one other metal besides lithium.
Claims18
An electrode comprising an active material represented by the nominal general formula LiM1−yMIyPO4F where 0≦y≦1 and where M is selected form the group consisting of Mn, V, Cr, Ti, Fe, Co, Ni, Nb, Mo, and mixtures thereof, and where MI is selected from the group consisting of Mn, V, Cr, Ti, Fe, Co, Ni, Nb, Mo, Al, B, and mixtures thereof.
An electrode comprising a binder, an electrically conductive carbonaceous material, and an active material represented by the nominal general formula LiM1−yMIyPO4F where 0≦y≦1 and where M is selected form the group consisting of Mn, V, Cr, Ti, Fe, Co, Ni, and mixtures thereof, and where MI is selected from the group consisting of Mn, V, Cr, Ti, Fe, Co, Ni, Nb, Mo, Al, B, and mixtures thereof.
A lithium ion battery comprising:
- a first electrode comprising a binder, an electrically conductive carbonaceous material, and an active material represented by the general formula LiM1−yMIyPO4F where 0≦y≦1 and where M is selected form the group consisting of Mn, V, Cr, Ti, Fe, Co, Ni, and mixtures thereof, and where MI is selected from the group consisting of Mn, V, Cr, Ti, Fe, Co, Ni, Nb, Mo, Al, B, and mixtures thereof;
- a second electrode which is a counter-electrode to said first electrode;
- and
- an electrolyte between said electrodes.
Dependencies are inferred from the claim text.