摘要:
A negative electrode for a nonaqueous electrolyte secondary battery having a small surface film resistance and a high negative electrode strength, wherein the negative electrode includes a collector and an active material layer formed thereon, wherein the active material layer contains an active material and a binder composition, wherein the active material is a material in which metal oxide fine particles having an average particle diameter of 250 nm or less are attached to the surface thereof, and wherein the binder composition contains a binder having an olefinic unsaturated bond.
摘要:
A negative electrode material for a nonaqueous secondary battery capable of realizing a nonaqueous secondary battery having a small charging/discharging irreversible capacity at an initial cycle and exhibiting an excellent high-rate charging/discharging characteristics and an excellent cycle performances is provided. The main component of the material is graphite particles. The median diameter is 5 μm or more, and 40 μm or less in the volume-basis particle size distribution based on the laser diffraction/scattering particle size distribution measurement. The tapping density is 0.7 g/cm3 or more. The specific surface area measured by a BET method is 0.2 m2/g or more, and 8 m2/g or less. The average circularity is 0.83 or more, and 1.00 or less. When an electrode is produced by a predetermined method for manufacturing an electrode and, the resulting electrode is subjected to X-ray diffraction, the graphite crystal orientation ratio I110/I004 on the electrode is 0.08 or more, where I110 represents the wide angle X-ray diffraction peak area of the (110) peak peak in the region of 2θ=76.5 to 78.5 degrees of the graphite particles on the electrode and I004 represents the wide angle X-ray diffraction peak area of the (004) peak peak in the region of 2θ=53.5 to 56 degrees.
摘要:
A negative electrode for a nonaqueous electrolyte secondary battery having a small surface film resistance and a high negative electrode strength, wherein the negative electrode includes a collector and an active material layer formed thereon, wherein the active material layer contains an active material and a binder composition, wherein the active material is a material in which metal oxide fine particles having an average particle diameter of 250 nm or less are attached to the surface thereof, and wherein the binder composition contains a binder having an olefinic unsaturated bond.
摘要:
The present invention provides an apparatus for transferring a microplate having a plurality of wells arranged in a matrix of lengthwise and crosswise rows relative to stationary dispenser nozzles spaced at regular intervals in the crosswise direction for dispensing a liquid matter into the wells. The number of the nozzles being smaller than the number of the wells in each crosswise row of the microplate. In a preferred embodiment of the invention, the number of the nozzles corresponds to half the number of the wells in a crosswise row. The apparatus comprises, a support plate on which the microplate is mounted, a means for transferring the support plate forward and backward in the lengthwise direction, and a means for shifting the support plate in the crosswise direction between a first position in which each of the odd or even wells in crosswise rows of the microplate is aligned with correspondingly one of the nozzles in the lengthwise direction, respectively, and a second position in which each of the even or odd wells in crosswise rows of the microplate is aligned with correspondingly one of the nozzles in the lengthwise direction, respectively.
摘要:
A negative electrode material for a nonaqueous secondary battery capable of realizing a nonaqueous secondary battery having a small charging/discharging irreversible capacity at an initial cycle, exhibiting an excellent high-rate charging/discharging characteristics and an excellent cycle performances, and having no electrodeposition problem is provided. The main component of the material is graphite particles. The median diameter of the graphite particles is 5 μm or more, and 40 μm or less in the volume-basis particle size distribution based on the laser diffraction/scattering particle size distribution measurement. The tapping density of the negative electrode material is 0.7 g/cm3 or more. The specific surface area measured by a BET method is 0.2 m2/g or more, and 8 m2/g or less. When an electrode is produced from the negative electrode material by a predetermined method for manufacturing an electrode, and the surface of the resulting electrode is measured with a laser shape measurement microscope, the skewness (Rsk) prescribed by JIS B 0601 of the surface roughness curve is −1.7 or more, and 0 or less.
摘要翻译:一种非水二次电池用负极材料,其能够实现初始循环时具有小充电/放电不可逆容量的非水二次电池,具有优异的高速充电/放电特性和优异的循环性能,并且不具有电沉积问题 被提供。 材料的主要成分是石墨颗粒。 基于激光衍射/散射粒度分布测量,石墨颗粒的中值粒径为5μm以上,体积基础粒径分布为40μm以下。 负极材料的攻丝密度为0.7g / cm 3以上。 通过BET法测定的比表面积为0.2m 2 / g以上,8m 2 / g以下。 当通过预定的电极制造方法从负极材料制造电极,并用激光形状测量显微镜测量所得电极的表面时,表面粗糙度曲线由JIS B 0601规定的偏度(Rsk) 为-1.7以上,0以下。
摘要:
A negative electrode material for a nonaqueous secondary battery capable of realizing a nonaqueous secondary battery having a small charging/discharging irreversible capacity at an initial cycle and exhibiting an excellent high-rate charging/discharging characteristics and an excellent cycle performances is provided. The main component of the material is graphite particles. The median diameter is 5 μm or more, and 40 μm or less in the volume-basis particle size distribution based on the laser diffraction/scattering particle size distribution measurement. The tapping density is 0.7 g/cm3 or more. The specific surface area measured by a BET method is 0.2 m2/g or more, and 8 m2/g or less. The average circularity is 0.83 or more, and 1.00 or less. When an electrode is produced by a predetermined method for manufacturing an electrode and, the resulting electrode is subjected to X-ray diffraction, the graphite crystal orientation ratio I110/I004 on the electrode is 0.08 or more, where I110 represents the wide angle X-ray diffraction peak area of the (110) peak peak in the region of 2θ=76.5 to 78.5 degrees of the graphite particles on the electrode and I004 represents the wide angle X-ray diffraction peak area of the (004) peak peak in the region of 2θ=53.5 to 56 degrees.
摘要:
To provide a nonaqueous secondary battery ensuring that a charge-discharge irreversible capacity at an initial cycle is sufficiently small even when an active material layer comprising a negative electrode active material on a current collector is increased in a density for obtaining a high capacity.This object is attained by a graphite composite particle for a nonaqueous secondary battery, which satisfies the requirements (1) and (2): (1) DL/DS is more than 1 and 2 or less, wherein DL μm means a volume-based median size measured by a laser diffraction/scattering-type particle size distribution measuring apparatus, and DS μm means an average circle-equivalent particle size which is determined from a measured area S of particles each having a contour not overlapped with a contour of another particle in a SEM; and (2) a Raman R value is 0.04 or more and 0.14 or less, wherein the Raman R value means an intensity ratio IB/IA between an intensity IA of a maximum peak of 1580 cm−1 around and an intensity IB of a maximum peak of 1360 cm−1 around in a Raman spectrum.
摘要:
To provide a nonaqueous secondary battery ensuring that a charge-discharge irreversible capacity at an initial cycle is sufficiently small even when an active material layer comprising a negative electrode active material on a current collector is increased in a density for obtaining a high capacity.This object is attained by a graphite composite particle for a nonaqueous secondary battery, which satisfies the requirements (1) and (2): (1) DL/DS is more than 1 and 2 or less, wherein DL μm means a volume-based median size measured by a laser diffraction/scattering-type particle size distribution measuring apparatus, and DS μm means an average circle-equivalent particle size which is determined from a measured area S of particles each having a contour not overlapped with a contour of another particle in a SEM; and (2) a Raman R value is 0.04 or more and 0.14 or less, wherein the Raman R value means an intensity ratio IB/IA between an intensity IA of a maximum peak of 1580 cm−1 around and an intensity IB of a maximum peak of 1360 cm−1 around in a Raman spectrum.
摘要:
An object of the invention is to provide a negative electrode for a nonaqueous electrolyte secondary battery having a small surface film resistance and a high negative electrode strength. The present invention relates to a negative electrode for a nonaqueous electrolyte secondary battery, wherein an active material layer containing an active material and a binder is formed on a collector, the active material being a material in which metal oxide fine particles having an average particle diameter of 250 nm or less are attached to the surface and the binder being a binder having an olefinic unsaturated bond.