Sumitomo Osaka Cement Co., Ltd.

Sumitomo Metal Mining Company, Ltd.

Satoru Oshitari

Masataka Oyama

Ryuuta Yamaya

Kouji Oono

Tsutomu Nozoe

Takao Kitagawa

Kenta Ooishi

Kazuyo Yamamoto

Naoyuki Kurosawa

Shinichi Tanaka

A positive electrode active material that is used in a high-temperature operation type lithium ion solid secondary battery, wherein the positive electrode active material is made of oxide particles, which contains a first transition element and does not include an alkali metal.

Positive electrode active material, high-temperature operation type lithium-ion polymer secondary battery, high-temperature operation type lithium ion inorganic all-solid-state secondary battery

An electrode material including a carbonaceous-coated electrode active material having primary particles of the electrode active material and secondary particles that are aggregates of the primary particles, and a carbonaceous film that coats the primary particles of the electrode active material and the secondary particles that are the aggregates of the primary particles, in which a specific surface area, which is obtained using a nitrogen adsorption method, is 4 m/g or more and 40 m/g or less, a volume of micropores per unit mass is 0.05 cm/g or more and 0.3 cm/g or less, and an average micropore diameter, which is obtained from the volume of the micropores per unit mass and the specific surface area, is 26 nm or more and 90 nm or less.

Electrode material, method for manufacturing electrode material, electrode, and lithium ion battery

The positive electrode material for lithium ion secondary batteries includes a mixture including a positive electrode active material in which a length of a longest side of a primary particle is 1 nm or more and 1000 nm or less and a NASICON-type compound in which a length of a longest side of a primary particle is 1 nm or more and 1000 nm or less.

Positive electrode material for lithium ion secondary batteries, positive electrode for lithium ion secondary batteries, and lithium ion secondary battery

An electrode material including a carbonaceous-coated electrode active material having primary particles of an electrode active material, secondary particles that are aggregates of the primary particles, and a carbonaceous film that coats the primary particles of the electrode active material and the secondary particles that are the aggregates of the primary particles, in which, in the electrode material, when ten random 180 nm&#xd7;180 nm views are observed using an electron microscope at a magnification of 100,000 times, the number of free carbon aggregates is three or less, and the number of protrusions twice or more as thick as the carbonaceous film is three or less.

A positive electrode material for a lithium ion secondary battery includes an olivine-type phosphate-based compound represented by General Formula LixAyDzPOand carbon, and, in transmission electron microscopic observation of a cross section of a secondary particle that is an agglomerate of primary particles of the olivine-type phosphate-based compound, a 300-point average value of filling rates of the carbon that fills insides of voids having a diameter of 5 nm or larger that are formed by the primary particles is 30 to 70%. A is any one of Co, Mn, Ni, Fe, Cu, and Cr, D is any one of Mg, Ca, Sr, Ba, Ti, Zn, B, Al, Ga, In, Si, Ge, Sc, and Y, and x, y, and z satisfy 0.9&#x3c;x&#x3c;1.1, 0&#x3c;y&#x2264;1.0, 0&#x2264;z&#x3c;1.0, and 0.9&#x3c;y+z&#x3c;1.1.

Positive electrode material for lithium ion secondary battery, positive electrode for lithium ion secondary battery, and lithium ion secondary battery

An electrode material for a lithium ion secondary battery of the present invention includes an electrode active material represented by LiFeMnMgAPOand a carbonaceous film coating a surface of the electrode active material, a particle diameter D10 of secondary particles is 0.5 &#x3bc;m or more, a particle diameter D90 of the secondary particles is 25 &#x3bc;m or less, and a ratio (O/I) of an average value of thicknesses I of the carbonaceous film on the surfaces of the primary particles in a range of 0.3 &#x3bc;m or less from a center of the secondary particle at 300 measurement points to an average value of thicknesses O of the carbonaceous film on the surfaces of the primary particles in a range of 0.3 &#x3bc;m or less from an outermost surface of the secondary particle at 300 measurement points is 0.85 or more and less than 1.00.

Electrode material for lithium ion secondary battery, electrode for lithium ion secondary battery, and lithium ion secondary battery

An electrode material including a carbonaceous-coated electrode active material having primary particles of an electrode active material and secondary particles that are aggregates of the primary particles, and a carbonaceous film that coats the primary particles of the electrode active material and the secondary particles that are the aggregates of the primary particles, in which a proportion of a volume of micropores having a micropore diameter of 50 nm or less in a volume of micropores having a micropore diameter of 300 nm or less, which is obtained using a nitrogen adsorption method, is 40% or more.

Embodiments provide an electrode material for a lithium ion battery capable of decreasing a metal elution amount even when an electrode active material having a large specific surface area is used as the electrode material and capable of obtaining a lithium ion battery in which a decrease in a capacity caused by storage at a high temperature in a fully charged state is suppressed and a lithium ion battery. The electrode material for a lithium ion battery includes electrode active material particles and a carbonaceous film that coats surfaces of the electrode active material particles, in which a tap density is 0.95 g/cmor more and 1.6 g/cmor less, and a volume ratio of micro pores to a total volume that is evaluated from nitrogen adsorption measurement is 1.5% or more and 2.5% or less.

Electrode material for lithium ion battery and lithium ion battery

An electrode material for a lithium ion battery including an active material represented by LiMPO(M is at least one selected from the group consisting of Fe, Mn, Co, Ni, Zn, Al, Ga, Mg, and Ca), in which an oil absorption amount for which diethyl carbonate is used (DEC oil absorption amount) is 50 cc/100 g or more and 80 cc/100 g or less, and a ratio (DEC/NMP) of the DEC oil absorption amount to an oil absorption amount for which N-methyl-2-pyrrolidinone is used (NMP oil absorption amount) is 1.3 or more and 1.8 or less.

A cathode material including an aggregate formed by aggregating active material particles, in which the active material particle is a particle including a cathode active material as a formation material and a carbonaceous material is provided on a surface of the particle, a ratio between a weight ratio of carbon contained in the aggregate to a BET specific surface area of the cathode material is in a range of 0.08 to 0.2, a tap density is in a range of 0.9 g/cmto 1.5 g/cm, and an oil absorption amount for which N-methyl-2-pyrrolidone is used is 70 cc/100 g or less.

Cathode material and lithium ion battery

A cathode material which does not easily deteriorate when used in batteries, a method for producing cathode materials, a cathode, and a lithium ion battery are provided. A cathode material including a cathode active material, in which the cathode active material is expressed by LiADPO(here, A represents one or more metal elements selected from the group consisting of Co, Mn, Ni, Fe, Cu, and Cr, D represents one or more metal elements selected from the group consisting of Mg, Ca, Sr, Ba, Ti, Zn, B, Al, Ga, In, Si, Ge, Sc, Y, and rare earth elements, 0&#x3c;x&#x3c;1, 0&#x3c;y&#x3c;1, 0&#x2264;z&#x3c;1.5, and 0.9&#x3c;y+z&#x2264;1), and, in thermogravimetric analysis in an inert gas atmosphere, when a temperature is increased in a temperature range from 100&#xb0; C. to 300&#xb0; C. at a temperature-increase rate of 10&#xb0; C./minute, a weight loss ratio in the temperature range is 0.3% by weight or less.

Manufacturing cathode material, cathode, and lithium ion battery

An electrode material for a lithium-ion rechargeable battery of the present invention is an electrode material for a lithium-ion rechargeable battery formed by coating a surface of an electrode active material represented by General Formula LiFeMnMPO(here, M represents at least one element selected from Mg, Ca, Co, Sr, Ba, Ti, Zn, B, Al, Ga, In, Si, Ge, and rare earth elements, 0.05&#x2264;x&#x2264;1.0, 0&#x2264;y&#x2264;0.14) with a carbonaceous film, in which an angle of repose is in a range of 35&#xb0; or more and 50&#xb0; or less.

Electrode material for lithium-ion rechargeable battery and method for manufacturing same

[Problems] To provide an electrode material for a lithium-ion rechargeable battery capable of improving the battery characteristics, durability, and stability of a lithium-ion rechargeable battery, an electrode for a lithium-ion rechargeable battery, and a lithium-ion rechargeable battery. [Means] An electrode material for a lithium-ion rechargeable battery of the present invention is an electrode material for a lithium-ion rechargeable battery formed by coating the surface of an electrode active material represented by General Formula LiADPO(here, A represents at least one element selected from Co, Mn, Ni, Fe, Cu, and Cr, D represents at least one element selected from Mg, Ca, Sr, Ba, Ti, Zn, B, Al, Ga, In, Si, Ge, Sc, and Y, 1&#x2264;x&#x2264;1.1, 0&#x3c;y&#x2264;1, 0&#x2264;z&#x3c;1, 0.9&#x3c;y+z&#x2264;1) with a carbonaceous film, in which a saturated adsorbed moisture amount in a carbonaceous film single body, which is detected in a temperature range of room temperature or more and 250&#xb0; C. or less by means of Karl Fischer (coulometric titration), is 5000 ppm or more and 50000 ppm or less.

Electrode material for lithium-ion rechargeable battery, electrode for lithium-ion rechargeable battery, and lithium-ion rechargeable battery

An electrode material includes Fe-containing olivine-structured LiADPO(wherein A represents one or more elements selected from the group consisting of Co, Mn, Ni, Cu, and Cr; D represents one or more elements selected from the group consisting of Mg, Ca, Sr, Ba, Ti, Zn, B, Al, Ga, In, Si, Ge, Sc, Y, and rare earth elements; 0&#x3c;x&#x2264;2; 0&#x3c;y&#x2264;1; and 0&#x2264;z&#x2264;1.5) particles that are coated with a carbon coating film, in which an abundance of Fe is 0.01 to 0.1 mol with respect to 1 mol of LiADPO, and an abundance ratio (Fe/(Fe+A+D)) of Fe on surfaces of the LiADPOparticles is 0.02 to 0.25.

Electrode material, paste, electrode plate, and lithium ion battery

An electrode material for a lithium-ion secondary battery of the present invention includes particles which are made of LiFeMnMgCaAPO, have an orthorhombic crystal structure, and have a space group of Pmna, in which a mis-fit value [(1&#x2212;(b2&#xd7;c2)/(b1&#xd7;c1))&#xd7;100] of a bc plane which is computed from lattice constants b1 and c1 of the LiFeMnMgCaAPOand lattice constants b2 and c2 of FeMnMgCaAPOobtained by deintercalating Li from LiFeMnMgCaAPOby means of an oxidation treatment using nitrosonium tetrafluoroborate in acetonitrile is 1.32% or more and 1.85% or less.

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Tokyo, Japan

Satoru Oshitari