摘要:
Provided is positive electrode material for a highly safe lithium-ion secondary battery that can charge and discharge a large current while having long service life. Disclosed are composite particles comprising: particles of lithium-containing phosphate; and carbon coating comprising at least one carbon material selected from the group consisting of (i) fibrous carbon material, (ii) chain-like carbon material, and (iii) carbon material produced by linking together fibrous carbon material and chain-like carbon material, wherein each particle is coated with the carbon coating. The fibrous carbon material is preferably a carbon nanotube with an average fiber size of 5 to 200 nm. The chain-like carbon material is preferably carbon black produced by linking, like a chain, primary particles with an average particle size of 10 to 100 nm. The lithium-containing phosphate is preferably LiFePO 4 , LiMnPO 4 , LiMn X Fe (1-X) PO 4 , LiCoPO 4 , or Li 3 V 2 (PO 4 ) 3 .
摘要:
The present invention provides a negative-electrode material for a lithium secondary battery which has a very low resistance, allows the lithium secondary battery to be charged and discharged (high output) at a high current and have a high capacity, and achieve a cycle life to such an extent that the lithium secondary battery can be mounted on a vehicle. The electrode material is composed of (a) at least one active substance (4) selected from among a metal oxide containing metal therein and an alloy material each of which is coated with a carbon material and has a graphene phase or an amorphous phase (8) on at least a surface thereof, (b) a graphite-based carbon material (5) having the graphene phase or the amorphous phase on at least a surface thereof; and (c) carbon material (6) other than the graphite-based carbon material and having the graphene phase or the amorphous phase on at least a surface thereof. The active substance (4), the graphite-based carbon material (5), and the carbon material (6) other than the graphite-based carbon material fuse the graphene phase or the amorphous phase (8a, 8b) thereof together and bond them to each other to form a composite active substance (7) including composed of the active substance including one active substance selected from among the metal oxide containing the metal and the alloy material
摘要:
Provided is positive electrode material for a highly safe lithium-ion secondary battery that can charge and discharge a large current while having long service life. Disclosed are composite particles comprising: particles of lithium-containing phosphate; and carbon coating comprising at least one carbon material selected from the group consisting of (i) fibrous carbon material, (ii) chain-like carbon material, and (iii) carbon material produced by linking together fibrous carbon material and chain-like carbon material, wherein each particle is coated with the carbon coating. The fibrous carbon material is preferably a carbon nanotube with an average fiber size of 5 to 200 nm. The chain-like carbon material is preferably carbon black produced by linking, like a chain, primary particles with an average particle size of 10 to 100 nm. The lithium-containing phosphate is preferably LiFePO 4 , LiMnPO 4 , LiMn X Fe (1-X) PO 4 , LiCoPO 4 , or Li 3 V 2 (PO 4 ) 3 .
摘要:
An acrylic elastomer composition containing: 100 parts by mass of an acrylic elastomer; and 2 to 15 parts by mass of at least one of a plasticizer represented by the chemical formula (1):
wherein R 1 , R 2 , R 3 , and R 4 each represent an alkyl group having 4 to 18 carbon atoms, and R 1 , R 2 , R 3 , and R 4 may be the same alkyl group or may be different from each other, and wherein the acrylic elastomer contains 0.1 to 5 parts by mass of a crosslinking monomer unit with respect to 100 parts by mass of an acrylic acid alkyl ester unit.
摘要:
An object of the invention is to provide a submicron-order scaly boron nitride fine particle having a low major diameter/thickness (aspect) ratio, high purity and high crystallinity. The invention provides a boron nitride fine particle, characterized by having an average particle diameter of 0.05 to 2.0 µm, a graphitization index of 3 or less, and a total oxygen content of 0.20% by mass or less, with an average value of a major diameter/thickness ratio of scaly particles being 6.0 or less, and a method of producing a boron nitride fine particle, characterized by introducing ammonia and an alkoxide borate at an ammonia/alkoxide borate molar ratio of 1 to 5 in a reaction vessel in an inert gas atmosphere for heating at 800 to 1,350°C within 30 seconds thereby obtaining a boron nitride precursor, and then heating the boron nitride precursor at 1,650 to 2,200°C for at least 0.5 hour in an inert gas atmosphere.
摘要:
Phosphor that can provide white LED that uses a blue LED or an ultraviolet LED as a light source and that has superior luminous efficiency. This phosphor is composed of host material of β-type sialon represented by a general expression of Si 6-z Al z O z N 8-z (wherein 0.01≤z≤4.2) and includes 0.01 to 10atm% of a metal element M3, wherein M3 is one or more types of elements selected from among Mn, Ce, and Eu. Constituent particles of the phosphor have an average circularity degree of 0.75 or more, a particle size distribution D 50 of 5 to 30µm, and D 10 of 2.0µm or more. The particles of the phosphor includes light emission-related elements that have a low concentration in the interior of the particle and that have a high concentration at the outer periphery of the particle, and the light emission-related element at the outer periphery of the phosphor particle has a concentration 1.2 times or more higher than that of the light emission-related element at the interior of the particle.
摘要:
Phosphor that can provide white LED that uses a blue LED or an ultraviolet LED as a light source and that has superior luminous efficiency. This phosphor is composed of host material of β-type sialon represented by a general expression of Si 6-z Al z O z N 8-z (wherein 0.01≤z≤4.2) and includes 0.01 to 10atm% of a metal element M3, wherein M3 is one or more types of elements selected from among Mn, Ce, and Eu. Constituent particles of the phosphor have an average circularity degree of 0.75 or more, a particle size distribution D 50 of 5 to 30µm, and D 10 of 2.0µm or more. The particles of the phosphor includes light emission-related elements that have a low concentration in the interior of the particle and that have a high concentration at the outer periphery of the particle, and the light emission-related element at the outer periphery of the phosphor particle has a concentration 1.2 times or more higher than that of the light emission-related element at the interior of the particle.
摘要翻译:可以提供使用蓝色LED或紫外线LED作为光源并具有优异发光效率的白色LED的荧光体。 该荧光体由Si 6-z Al z O z N 8-z(其中0.01‰¤‰‰4.2)的一般表达式所代表的²型赛隆的主体材料组成,并且包括0.01至10atm%的金属元素 M3,其中M3是选自Mn,Ce和Eu中的一种或多种元素。 荧光体的成分粒子的平均圆形度为0.75以上,粒径分布D 50为5〜30μm,D 10为2.0μm以上。 荧光体的粒子包括在粒子内部具有低浓度并且在粒子的外周具有高浓度的发光相关元素,在荧光体的外周的发光相关元素 颗粒的浓度比颗粒内部的发光相关元素的浓度高1.2倍以上。
摘要:
An object of the invention is to provide a submicron-order scaly boron nitride fine particle having a low major diameter/thickness (aspect) ratio, high purity and high crystallinity. The invention provides a boron nitride fine particle, characterized by having an average particle diameter of 0.05 to 2.0 µm, a graphitization index of 3 or less, and a total oxygen content of 0.20% by mass or less, with an average value of a major diameter/thickness ratio of scaly particles being 6.0 or less, and a method of producing a boron nitride fine particle, characterized by introducing ammonia and an alkoxide borate at an ammonia/alkoxide borate molar ratio of 1 to 5 in a reaction vessel in an inert gas atmosphere for heating at 800 to 1,350°C within 30 seconds thereby obtaining a boron nitride precursor, and then heating the boron nitride precursor at 1,650 to 2,200°C for at least 0.5 hour in an inert gas atmosphere.