Nec Corporation

Sumitomo Metal Mining Company, Ltd.

Mitsubishi Gas Chemical Company, Inc.

Tohoku University

Mgc Filsheet Co., Ltd.

Vacuum Optics Corporation

Jun Yokoyama

Tetsufumi Komukai

Yuki Furuichi

Tomoko Nakayama

Hitoshi Takagi

Kumiko Suzuki

Kentaro Kondo

Kazuomi Ryoshi

Kenji Ishii

Hiroyuki Kato

Toru Harada

Kensaku Mori

Yasuhiro Suzuki

Haruki Kaneda

Yuki Koshika

Katsushige Hayashi

Mitsuo Miura

Isao Hagiwara

Mitsuru Yamauchi

Jiro Okada

Kazuya Uchida

Yukinobu Nakabayashi

Hideki Kato

Takahiro Ogawa

Masato Kakihana

Satoko Tezuka

Takashi Ozaki

Tsutomu Nara

Masaaki Miyake

The present invention relates to a positive electrode active material for non-aqueous electrolyte secondary battery, including lithium-nickel composite oxide particles having a layer structure of hexagonal system; and a lithium tungstate coating film disposed on a surface of secondary particles of the lithium-nickel composite oxide particles, wherein the positive electrode active material for non-aqueous electrolyte secondary battery includes, as metallic elements, lithium (Li), nickel (Ni), cobalt (Co), element M (M) which is at least one element selected from Mn, V, Mg, Mo, Nb, Ti, Ca, Cr, Zr, Ta, and Al, and tungsten (W), wherein a ratio of amount of substance in the metallic elements contained is Li:Ni:Co:M:W=a:1-x-y:x:y:z, wherein 0.97≤a≤1.25, 0≤x≤0.35, 0≤y≤0.35, and 0.005≤z≤0.030.

Positive electrode active material for non-aqueous electrolyte secondary battery comprising tungsten coating film, and non-aqueous electrolyte secondary battery

The present invention provides a positive electrode active material for a non-aqueous electrolyte secondary battery including a lithium metal composite oxide powder represented by a general formula: LiNiCoMO, wherein 0&#x3c;x&#x2264;0.35, 0&#x2264;y&#x2264;0.35, 0.95&#x2264;z&#x2264;1.30, &#x2212;0.15&#x2264;&#x3b1;&#x2264;0.15, and M is at least one element selected from Mn, V, Mg, Mo, Nb, Ti and Al; and a coating layer placed on particle surfaces of the lithium metal composite oxide powder; wherein the coating layer is a mixed-phase of a crystalline phase and an amorphous phase.

Positive electrode active material for non-aqueous electrolyte secondary battery

Provided is a positive electrode active material for a nonaqueous electrolyte secondary battery including a LiNi composite oxide having low internal resistance and excellent thermal stability. The positive electrode active material is obtained by performing a water washing process using a water spray on a LiNi composite oxide powder obtained by a firing step until the filtrate has an electric conductivity of 30 to 60 mS/cm, and then dried, where the LiNi composite oxide is represented by the composition formula (1): LiNiM1O, where M1 represents at least one kind of element selected from transition metal elements other than Ni, group 2 elements, and group 13 elements, and 0.01&#x2264;a&#x2264;0.5, and 0.85&#x2264;b&#x2264;1.05.

Positive electrode active material for nonaqueous electrolyte secondary batteries, method for producing same, and nonaqueous electrolyte secondary battery

Provided is a positive electrode active material for non-aqueous electrolyte secondary batteries for making high capacity and high output compatible, non-aqueous electrolyte secondary batteries, to which the positive electrode active material is adopted, and a production method for a positive electrode active material in which the positive electrode active material can be easily produced even on an industrial scale. A positive electrode active material for non-aqueous electrolyte secondary batteries, comprising: primary particles of a lithium nickel composite oxide represented by at least General Formula: LiNiCoMO(0.95&#x2264;z&#x2264;1.03, 0&#x3c;x&#x2264;0.20, 0&#x3c;y&#x2264;0.10, x+y&#x2264;0.20, and M is at least one type of element selected from Mg, Al, Ca, Ti, V, Cr, Mn, Nb, Zr, and Mo); and secondary particles configured by aggregating the primary particles, wherein an LiAl compound is provided on surfaces of the primary particles.

Positive electrode active material for non-aqueous electrolyte secondary batteries, production method therefor, and non-aqueous electrolyte secondary batteries using said positive electrode active material

Provided is a positive electrode active material for non-aqueous electrolyte secondary batteries for making high capacity and high output compatible, non-aqueous electrolyte secondary batteries, having the positive electrode active material adopted thereto, and a production method for a positive electrode active material in which the positive electrode active material can be easily produced in an industrial scale. A positive electrode active material for non-aqueous electrolyte secondary batteries, contains: primary particles of a lithium nickel composite oxide represented by at least General Formula: LiNiCoMO(0.95&#x2264;z&#x2264;1.03, 0&#x3c;x&#x2264;0.20, 0&#x3c;y&#x2264;0.10, x+y&#x2264;0.20, and M is at least one type of element selected from Mg, Al, Ca, Ti, V, Cr, Mn, Nb, Zr, and Mo); and secondary particles configured by flocculating the primary particles, wherein an LiAl compound and an LiW compound are provided on surfaces of the primary particles.

A system management device includes a storage part for storing at least one of a device configuration of a device and a network configuration of a network to which the device belongs. The device includes a control part configured to, from among devices belonging to a system, determine the device for executing a process on a basis of at least one of the device configuration and the network configuration.

System management device, system management method, program, and information processing system

Provided is a method for producing a positive electrode active material for nonaqueous electrolyte secondary batteries, the method including: a mixing step of obtaining a W-containing mixture of Li metal composite oxide particles represented by the formula: LiNiCOMOand composed of primary particles and secondary particles formed by aggregation of the primary particles, 2 mass % or more of water with respect to the oxide particles, and a W compound or a W compound and a Li compound, the W-containing mixture having a molar ratio of the total amount of Li contained in water and the solid W compound or the W compound and the Li compound of 3 to 5 with respect to the amount of W contained therein; and a heat treatment step of heating the W-containing mixture to form lithium tungstate on the surface of the primary particles of the Li metal composite oxide particles.

Positive electrode active material for nonaqueous electrolyte secondary battery, method for producing same, and nonaqueous electrolyte secondary battery using said positive electrode active material

Provided is a method for producing a positive electrode active material for nonaqueous electrolyte secondary batteries, including: a water-washing step of mixing, with water, Li&#x2014;Ni composite oxide particles represented by the formula: LiNiCoMOand composed of primary particles and secondary particles formed by aggregation of the primary particles to water-wash it, and performing solid-liquid separation to obtain a washed cake; a mixing step of mixing a W compound powder free from Li with the washed cake to obtain a W-containing mixture; and a heat treatment step of heating the W-containing mixture, the heat treatment step including: a first heat treatment step of heating the W-containing mixture to disperse W on the surface of the primary particles; and subsequently, a second heat treatment step of heating it at a higher temperature than in the first heat treatment step to form a lithium tungstate compound on the surface of the primary particles.

Method for producing positive electrode active material for nonaqueous electrolyte secondary battery

A positive electrode active material for nonaqueous electrolyte secondary batteries has a high charge/discharge capacity and produces high output, as well as has high filling ability. The positive electrode active material includes lithium-nickel composite oxide particles are formed by agglomeration of multiple primary particles, include pores, and have a layered crystal structure. The lithium-nickel composite oxide particles have an average particle size of 15 &#x3bc;m or more and 30 &#x3bc;m or less. The percentage of an area of the pores measured by a cross-sectional observation of the lithium-nickel composite oxide particles with respect to a cross-sectional area of the lithium-nickel composite oxide particles is 1.0% or more and 5.0% or less. A lithium-tungsten compound containing tungsten and lithium is present on the surface of and inside the secondary particles. The lithium-tungsten compound is present on at least part of the surface of the primary particles.

Positive electrode active material for nonaqueous electrolyte secondary batteries, production method thereof, and nonaqueous electrolyte secondary battery

A selection device includes: a storage part in which connection path information indicating a connection path of a device is stored; and a selection part configured to select the device for executing a process from among the plurality of devices. The selection part is configured to select, as the devices for executing a process, the devices whose paths from a place to store data used in the process to the devices are at least partly common on the basis of the connection path information.

Selection device, device selection method, and program

An information processing apparatusis configured to include a selection unitconfigured to select a storage device to be moved from a first place associated with a first storage device to a second place associated with a second storage device connected with the first storage device over a network, based on travel informationincluding the origin and the destination of the storage device. The storage device is selected as a third storage device to be used for storing transport target data stored in the first storage device and transporting the data to the second storage device.

Information processing apparatus

In one aspect, a method for producing a positive electrode active material for a nonaqueous electrolyte secondary battery, includes mixing first lithium nickel composite oxide particles containing lithium tungstate and second lithium nickel composite oxide particles not containing lithium tungstate. The first lithium nickel composite oxide particles have a composition represented by LiNiCoMO, and include a core material containing secondary particles each corresponding to an aggregation of a plurality of primary particles, and the lithium tungstate existing on at least a part of a surface of the primary particles on a surface of and inside the first lithium nickel composite oxide particles. The second lithium nickel composite oxide particles have a composition represented by LiNiCoMO, and include secondary particles each corresponding to an aggregation of a plurality of primary particles.

Positive electrode active material for nonaqueous electrolyte secondary battery, method for producing the same, and nonaqueous electrolyte secondary battery

To ensure the electricity storage amount of a power storage device in preparation for the peak period of power consumption when supplying power to a plurality of devices, a power management apparatus includes a controller that controls the plurality of devices that receive a distribution of total power supplied from the power storage device and another power supply, an acquirer that acquires the remaining electric energy of the power storage device, and a determiner that determines whether the remaining electric energy of the power storage device is not more than a first predetermined value. If the remaining electric energy of the power storage device is not more than the first predetermined value, the controller controls the plurality of devices such that the power from the other power supply is distributed to the power storage device.

Growing community of inventors

Tokyo, Japan

Jun Yokoyama