# US 2017/0288218 A1 · Conductive composition for electrode, electrode using same, and lithium ion secondary battery > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0288218 A1 - Document ID: US20170288218A1 - Status: Published application - Kind: A1 - Application number: 15/503,362 - Filed: 2015-08-06 - Published: 2017-10-05 - Earliest claimed: 2014-08-11 - Assignees: Denka Company Limited - Applicants: Denka Company Limited - Inventors: Yoko Horikoshi; Toru Arai; Hitoshi Kaneko; Tatsuya Nagai; Ayumu Tsukamoto - Web page: https://patentgrep.com/patent/US20170288218A1 ## CPC - H01M 4/405: {Alloys based on lithium} - C01B 32/05: Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30 - C09D 127/16: Homopolymers or copolymers of vinylidene fluoride - C09D 127/18: Homopolymers or copolymers of tetrafluoroethene - C09D 129/04: Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids - H01B 1/24: the conductive material comprising carbon-silicon compounds, carbon or silicon - H01M 4/386: {Silicon or alloys based on silicon} - 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 4/623: {fluorinated polymers} - H01M 4/625: {Carbon or graphite} - H01M 10/052: Li-accumulators - B82Y 30/00: Nanotechnology for materials or surface science, e.g. nanocomposites - B82Y 40/00: Manufacture or treatment of nanostructures - C08F 14/26: Tetrafluoroethene - C08F 20/06: Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof - C08L 9/06: Copolymers with styrene - H01M 4/131: Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx - Y02E 60/10: Energy storage using batteries - 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} - C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D) - H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K}) - B82Y: SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES - C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A conductive composition for electrode is provided that is excellent in conductivity and dispersibility. Further, an electrode for lithium ion secondary battery with lower plate resistance and a lithium ion secondary battery excellent in rate characteristics are provided that use this conductive composition. A conductive composition for electrode, including: carbon nanofiber with a median diameter D50 value by volume from 0.1 to 8 μm; an active material; and a binder enables production of an electrode for lithium ion secondary battery with lower plate resistance and a lithium ion secondary battery excellent in rate characteristics. ## Claims ### Claim 1 A conductive composition for electrode, comprising: carbon nanofiber with a median diameter D50 value by volume from 0.1 to 8μm; an active material; and a binder. ### Claim 2 (depends on 1) The composition of claim 1, wherein the carbon nanofiber further has powder resistivity of, measured under a load of 9.8 MPa, 0.03 Ωcm or less and D/G from 0.5 to 1.3. ### Claim 3 (depends on 1) The composition of claim 1, wherein a content of the carbon nanofiber is from 0.1 to 2 mass % based on a sum total of the composition. ### Claim 4 (depends on 1) The composition of claim 1, wherein the active material is selected from any one or more of LiCoO2, LiMn2O4, LiNiO2, LiMPO4, Li2MSiO4, LiNiXMn(2-X)O4, Li(MnXNiYCoZ)O2, Li(AlXNiYCoZ)O2, and xLi2MnO3-(1-x)LiMO2, where X in LiNiXMn(2-X)O4 satisfies relationship of 0