# US 8,785,043 B2 · Cathode materials for secondary (rechargeable) lithium batteries > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,785,043 B2 - Document ID: US8785043B2 - Status: Granted - Kind: B2 - Application number: 13/645,341 - Filed: 2012-10-04 - Published: 2013-01-31 - Granted: 2014-07-22 - Earliest claimed: 1996-04-23 - Assignees: Hydro-Quebec - Applicants: Michel Armand; John B. Goodenough; Akshaya K. Padhi; Kirakodu S. Nanjundaswamy; Christian Masquelier - Inventors: Michel Armand; John B. Goodenough; Akshaya K. Padhi; Kirakodu S. Nanjundaswamy; Christian Masquelier - Web page: https://patentgrep.com/patent/US8785043B2 ## CPC - H01M 4/136: Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy - C01B 25/45: containing plural metal, or metal and ammonium - G02F 1/155: Electrodes - H01M 4/049: {Manufacturing of an active layer by chemical means} - H01M 4/1397: of electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy - H01M 4/485: of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy (H01M4/505, H01M4/525 take precedence) - H01M 4/505: of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy - H01M 4/525: of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy - H01M 4/5825: {Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines} - H01M 4/622: {being polymers} - H01M 4/625: {Carbon or graphite} - H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries - H01M 4/583: Carbonaceous material, e.g. graphite-intercalation compounds or CFx - H01M 10/052: Li-accumulators - H01M 2004/028: {Positive electrodes} - H01M 2300/0068: inorganic - Y02E 60/10: Energy storage using batteries - Y10T 29/49108: Electric battery cell making - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - C01B: NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; {METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C} - G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract The invention relates to materials for use as electrodes in an alkali-ion secondary (rechargeable) battery, particularly a lithium-ion battery. The invention provides transition-metal compounds having the ordered-olivine or the rhombohedral NASICON structure and the polyanion (PO4)3− as at least one constituent for use as electrode material for alkali-ion rechargeable batteries. ## Claims ### Claim 1 A secondary battery comprising: at least one cathode comprising one or more compounds, at least one of the compounds with an olivine structure comprising the general formula LiMPO4, wherein M comprises Co, Fe, Mn, Ti, or Ni; and at least one lithium anode. ### Claim 2 (depends on 1) The secondary battery of claim 1, wherein M is Fe. ### Claim 3 (depends on 1) The secondary battery of claim 1, wherein M is Mn. ### Claim 4 (depends on 1) The secondary battery of claim 1, wherein the anode comprises metallic lithium. ### Claim 5 (depends on 1) The secondary battery of claim 1, wherein the anode comprises a lithium alloy. ### Claim 6 (depends on 1) The secondary battery of claim 1, wherein the anode comprises a lithium-transition metal mixed nitride of antifluorite. ### Claim 7 (depends on 1) The secondary battery of claim 1, wherein the anode comprises and a lithium-titanium spinel having the formula Li1+a+zTi2-aO4, where 0≦a≦⅓ and 0≦z≦1-2a. ### Claim 8 (depends on 1) The secondary battery of claim 1, wherein the cathode further comprises a second compound. ### Claim 9 (depends on 1) The secondary battery of claim 1, wherein the at least one compound with an olivine structure is contained in particles with a particle size on the nanometer scale. ### Claim 10 A secondary battery comprising: at least one cathode comprising one or more compounds, at least one of the compounds with an olivine structure comprising the general formula LiMPO4, wherein M comprises Co, Fe, Mn, Ti, or Ni partially substituted with at least one other metal; and at least one lithium anode. ### Claim 11 (depends on 10) The secondary battery of claim 10, wherein M is Fe partially substituted with at least one other metal. ### Claim 12 (depends on 10) The secondary battery of claim 10, wherein M is Mn partially substituted with at least one other metal. ### Claim 13 (depends on 10) The secondary battery of claim 10, wherein the anode comprises metallic lithium. ### Claim 14 (depends on 10) The secondary battery of claim 10, wherein the anode comprises a lithium alloy. ### Claim 15 (depends on 10) The secondary battery of claim 10, wherein the anode comprises a lithium-transition metal mixed nitride of antifluorite. ### Claim 16 (depends on 10) The secondary battery of claim 10, wherein the anode comprises and a lithium-titanium spinel having the formula Li1+a+zTi2-aO4, where 0≦a≦⅓ and 0≦z≦1-2a. ### Claim 17 (depends on 10) The secondary battery of claim 10, wherein the cathode further comprises a second compound. ### Claim 18 (depends on 10) The secondary battery of claim 10, wherein the at least one compound with an olivine structure is contained in particles with a particle size on the nanometer scale. ### Claim 19 (depends on 10) The secondary battery of claim 10, wherein Co, Fe, Mn, Ti, or Ni are partially substituted with up to 10% of the other metal. ### Claim 20 (depends on 10) The secondary battery of claim 10, wherein the other metal comprises a metal having two filled electron shells. ### Claim 21 (depends on 10) The secondary battery of claim 10, wherein M comprises Co, Fe, Mn, Ti, or Ni partially substituted with at least two other metals. ### Claim 22 (depends on 10) The secondary battery of claim 10, wherein the other metal comprises a divalent cation. ### Claim 23 (depends on 10) The secondary battery of claim 10, wherein the other metal comprises a trivalent cation. ### Claim 24 (depends on 10) The secondary battery of claim 10, wherein the other metal comprises a tetravalent cation. ### Claim 25 (depends on 10) The secondary battery of claim 10, wherein the other metal comprises a pentavalent cation. ### Claim 26 (depends on 10) The secondary battery of claim 10, wherein M comprises Fe, Mn, Ti, or Ni and the other metal comprises Co.