Abstract:
A graphite material, including high crystallinity graphite and spherical graphite, in which high crystallinity graphite: (1) a rhombohedral crystal ratio by X-ray diffractometry is 0.02 or less, (2) Lc is 90 nm or more, (3) when a pressure of 1 GPa for 10 seconds is applied to the high crystallinity graphite, the increment rate of the BET specific surface area after applying the pressure to the BET specific surface area before applying the pressure is 90% or less, and (4) D10 is 5.0 μm or more; and in which spherical graphite: (1) a median of the circularity is 0.90 or more, and (2) a tapping density is 1.20 g/cm3 or more; and the ratio by mass of the high crystallinity graphite and the spherical graphite is 95:5 to 40:60; an electrode using the graphite material as an electrode active material; and a lithium ion secondary battery using the electrode.
Abstract:
A graphite powder, preferably including scale-like particles, which satisfies the following formulae (1) and (2), wherein e(0.5) represents the initial charge-discharge efficiency of a coin cell fabricated from an electrode (work electrode) produced by compressing an electrode material employing graphite powder as an active material under a pressure of 0.5 t/cm2, a lithium metal counter electrode, a separator and an electrolytic solution; and e(3) represents the initial charge-discharge efficiency of a coin cell fabricated from an electrode (work electrode) produced by compressing an electrode material employing graphite powder as an active material under a pressure of 3 t/cm2, a lithium metal counter electrode, a separator and an electrolytic solution: e(3)(%)−e(0.5)(%)≧1, formula (1): e(3)(%)>85. formula (2): Also disclosed is a method of producing the graphite powder; a graphite material for a battery electrode; an electrode for a lithium ion; and a lithium-ion secondary battery.
Abstract translation:一种满足下式(1)和(2)的石墨粉末,优选包括鳞片状颗粒,其中e(0.5)表示由电极(工作电极)制成的纽扣电池的初始充电 - 放电效率 在0.5t / cm 2的压力下,使用石墨粉末作为活性物质来压制电极材料,锂金属对电极,隔膜和电解液; e(3)表示由在3t / cm 2的压力下使用石墨粉作为活性物质的电极材料制成的电极(工作电极)制造的纽扣电池的初始充放电效率, 电极,隔板和电解液:e(3)(%)-e(0.5)(%)≥1,式(1):e(3)(%)> 85。 式(2):还公开了石墨粉的制造方法, 用于电池电极的石墨材料; 锂离子电极; 和锂离子二次电池。
Abstract:
The present invention provides a carbon material and a material for a battery electrode which is suitable for use as an electrode material for an aqueous-electrolyte secondary battery, which material comprises optical structures having a specific shape, and in which material the ratio IG/ID (R value) between the peak intensity (ID) of a peak in a range of 1300 to 1400 cm−1 and the peak intensity (IG) of a peak in a range of 1580 to 1620 cm−1 measured by Raman spectroscopy spectra when particles of the carbon material are measured with Raman microspectrometer is 0.38 or more and 1.2 or less and the average interplanar spacing d002 of plane (002) by the X-ray diffraction method is 0.335 nm or more and 0.338 nm or less; and a secondary battery excellent in charge/discharge cycle characteristics and large current load characteristics.
Abstract translation:本发明提供一种碳材料和电池电极用材料,其适用于水电解质二次电池的电极材料,该材料包括具有特定形状的光学结构,其中材料的比例为IG / ID 在1300〜1400cm -1范围内的峰的峰强度(ID)与通过拉曼光谱测定的1580〜1620cm -1范围的峰的峰强度(IG)之间的差(R值) 使用拉曼显微光谱仪测定碳材料的粒子为0.38以上且1.2以下,通过X射线衍射法得到的平面(002)的平均晶面间距d002为0.335nm以上且0.338nm以下, 以及充电/放电循环特性和大电流负载特性优异的二次电池。
Abstract:
A catalyst carrier production process includes a step (a) of mixing a transition metal compound (1), a nitrogen-containing organic compound (2), and a solvent to provide a catalyst carrier precursor solution; a step (b) of removing the solvent from the catalyst carrier precursor solution; and a step (c) of thermally treating a solid residue obtained in the step (b) at a temperature of 500 to 1100° C. to provide a catalyst carrier; wherein the transition metal compound (1) is partly or wholly a compound including a transition metal element (M1) selected from the group 4 and 5 elements of the periodic table as a transition metal element; and at least one of the transition metal compound (1) and the nitrogen-containing organic compound (2) includes an oxygen atom.
Abstract:
A carbon material and a material for a battery electrode which is suitable for use as an electrode material for an aqueous-electrolyte secondary battery, which material includes optical structures having a specific shape, and in which material the ratio IG/ID (R value) between the peak intensity (ID) of a peak in a range of 1300 to 1400 cm−1 and the peak intensity (IG) of a peak in a range of 1580 to 1620 cm−1 measured by Raman spectroscopy spectra when particles of the carbon material are measured with Raman microspectrometer is 0.38 or more and 1.2 or less and the average interplanar spacing d002 of plane (002) by the X-ray diffraction method is 0.335 nm or more and 0.338 nm or less; and a secondary battery excellent in charge/discharge cycle characteristics and large current load characteristics.
Abstract:
A graphite powder, preferably including scale-like particles, which satisfies the following formulae (1) and (2), wherein e(0.5) represents the initial charge-discharge efficiency of a coin cell fabricated from an electrode (work electrode) produced by compressing an electrode material employing graphite powder as an active material under a pressure of 0.5 t/cm2, a lithium metal counter electrode, a separator and an electrolytic solution; and e(3) represents the initial charge-discharge efficiency of a coin cell fabricated from an electrode (work electrode) produced by compressing an electrode material employing graphite powder as an active material under a pressure of 3 t/cm2, a lithium metal counter electrode, a separator and an electrolytic solution: e(3)(%)−e(0.5)(%)≥1, formula (1): e(3)(%)>85. formula (2): Also disclosed is a method of producing the graphite powder; a graphite material for a battery electrode; an electrode for a lithium ion; and a lithium-ion secondary battery.
Abstract:
A carbon material, being a not-scaly carbon material having specific optical structures, wherein the ratio between the peak intensity I110 of plane (110) and the peak intensity I004 of plane (004) of a graphite crystal determined by the powder XRD measurement, I110/I004, is 0.1 to 0.6; an average circularity is 0.80 to 0.95; d002 is 0.337 nm or less; and the total pore volume of pores having a diameter of 0.4 μm or less measured by the nitrogen gas adsorption method is 8.0 μl/g to 20.0 μl/g; and a production method of the same.
Abstract:
Catalysts of the present invention are not corroded in acidic electrolytes or at high potential and have excellent durability and high oxygen reducing ability. The catalyst includes a metal oxycarbonitride containing two metals M selected from the group consisting of tin, indium, platinum, tantalum, zirconium, titanium, copper, iron, tungsten, chromium, molybdenum, hafnium, vanadium, cobalt, cerium, aluminum and nickel, and containing zirconium and/or titanium. Also disclosed is a process for producing the catalyst.
Abstract:
A graphite powder, preferably including scale-like particles, which satisfies the following formulae (1) and (2), wherein e(0.5) represents the initial charge-discharge efficiency of a coin cell fabricated from an electrode (work electrode) produced by compressing an electrode material employing graphite powder as an active material under a pressure of 0.5 t/cm2, a lithium metal counter electrode, a separator and an electrolytic solution; and e(3) represents the initial charge-discharge efficiency of a coin cell fabricated from an electrode (work electrode) produced by compressing an electrode material employing graphite powder as an active material under a pressure of 3 t/cm2, a lithium metal counter electrode, a separator and an electrolytic solution: e(3)(%)−e(0.5)(%)≥1, formula (1): e(3)(%)>85. formula (2): Also disclosed is a method of producing the graphite powder; a graphite material for a battery electrode; an electrode for a lithium ion; and a lithium-ion secondary battery.
Abstract:
A carbon material for negative electrodes in lithium ion secondary battery, wherein a specific surface area is not less than 1.5 m2/g and not more than 6.5 m2/g, a tap density is not less than 0.5 g/cm3 and not more than 1.3 g/cm3, a Raman R value is not less than 0.1 and not more than 0.4, no diffraction peak is present in a range of diffraction angle of 42.7° to 43.7° in X-ray diffraction analysis, d002 is not more than 0.337 nm, and at most one peak is present in a range of not less than 500° C. and less than 1000° C. in thermogravimetric-differential thermal analysis.