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    • 22. 发明授权
    • Process for producing lithium vanadium phosphate-carbon composite
    • 生产锂钒磷酸盐 - 碳复合材料的方法
    • US09437866B2
    • 2016-09-06
    • US13823612
    • 2011-09-22
    • Tsutomu KikuchiKazuki TakimotoHideo Yanagita
    • Tsutomu KikuchiKazuki TakimotoHideo Yanagita
    • H01M4/1397H01M4/13H01M4/58C01B25/45H01M4/04H01M4/136H01M10/0525H01M4/62
    • H01M4/1397C01B25/45H01M4/04H01M4/13H01M4/136H01M4/5825H01M4/625H01M10/0525Y02E60/122Y02P70/54Y02T10/7011
    • A process for producing a lithium vanadium phosphate-carbon composite includes a first step that includes mixing a lithium source, a tetravalent or pentavalent vanadium compound, a phosphorus source, and a conductive carbon material source that produces carbon through pyrolysis, in an aqueous solvent to prepare a raw material mixture, a second step that includes heating the raw material mixture to effect a precipitation reaction to obtain a reaction mixture that includes a precipitate, a third step that includes subjecting the reaction mixture that includes the precipitate to wet grinding using a media mill to obtain a slurry that includes ground particles, a fourth step that includes spray-drying the slurry that includes the ground particles to obtain a reaction precursor, and a fifth step that includes calcining the reaction precursor at 600 to 1300° C. in an inert gas atmosphere or a reducing atmosphere. A lithium vanadium phosphate-carbon composite produced by the process may provide a lithium secondary battery with excellent battery performance (e.g., high discharge capacity) when used as a cathode active material.
    • 一种制备锂钒磷酸盐 - 碳复合材料的方法包括第一步骤,其包括在水性溶剂中将锂源,四价或五价钒化合物,磷源和通过热解产生碳的导电碳材料源混合至 制备原料混合物,第二步骤包括加热原料混合物进行沉淀反应以获得包含沉淀物的反应混合物,第三步骤包括使用介质对含有沉淀物的反应混合物进行湿磨研磨 研磨以获得包括研磨颗粒的浆料,第四步骤包括喷雾干燥包含研磨颗粒的浆料以获得反应前体,第五步包括在600至1300℃下煅烧反应前体, 惰性气体气氛或还原气氛。 通过该方法生产的锂钒磷酸铁复合物可以提供当用作阴极活性材料时具有优异的电池性能(例如,高放电容量)的锂二次电池。
    • 25. 发明授权
    • Gas analyzing apparatus
    • US06550308B2
    • 2003-04-22
    • US10117599
    • 2002-04-04
    • Tsutomu KikuchiAkira NishinaTetsuya Kimijima
    • Tsutomu KikuchiAkira NishinaTetsuya Kimijima
    • G01N3004
    • G01N30/7206G01N2030/201G01N2030/8886
    • There is provided a gas analyzing apparatus capable of minimizing gas remaining by integrating gas switching apparatuses into one and capable of analyzing impurities of ppb level to sub-ppb level contained in various kinds of high-purity gases efficiently and accurately. The gas analyzing apparatus comprises an analyzer introduction passage 22 for introducing a sample gas supplied from a sample gas source 11 into an analyzer 12 via an analyzer introduction valve 22V; a separator introduction passage 23 diverging from a first side passage of the analyzer introduction valve 22V for introducing a sample gas into a separator 13 via a separator introduction valve 23V; a separator flowing-out passage 24 for introducing the sample gas flowing out from the separator 13 into a second side passage of the analyzer introduction valve 22V via a separator flowing-out valve 24V; and a gas switching apparatus to be such formed that when the analyzer introduction valve 22V is opened, the separator introduction valve 23V and the separator flowing-out valve 24V are connectively operated to be closed, and when the analyzer introduction valve 22V is closed, the separator introduction valve 23V and the separator flowing-out valve 24V are connectively operated to be opened.
    • 27. 发明授权
    • System for analyzing trace amounts of impurities in gases
    • 用于分析气体中微量杂质的系统
    • US06418781B1
    • 2002-07-16
    • US09445413
    • 1999-12-08
    • Akira NishinaTsutomu KikuchiMakoto TanakaHidetoshi YoshidaTetsuya Kimijima
    • Akira NishinaTsutomu KikuchiMakoto TanakaHidetoshi YoshidaTetsuya Kimijima
    • B01D1508
    • H01J49/0422G01N30/7206G01N33/0022G01N33/0032
    • An analyzing apparatus for assaying various kinds of trace impurity contents in various kinds of high-purity gases, having an atmospheric pressure ionization mass spectrometer useful for determination of trace impurity contents in such high-purity gases on the ppb to sub ppb levels and a gas chromatograph integrated therewith, enabling high efficiency determination of trace impurity contents in high-purity gases. The analyzing apparatus having a gas chromatograph (8) and an atmospheric pressure ionization mass spectrometer (6), is provided with a system (10) for introducing a sample gas introduced from a sample gas introduction source directly to the atmospheric pressure ionization mass spectrometer (6); a system (14a, 14b) for introducing the sample gas via the gas chromatograph (8) to the atmospheric pressure ionization mass spectrometer (6); and a channel selector (11, 13, 15) for changing over the channel of the sample gas to either of these two systems.
    • 一种用于测定各种高纯度气体中各种痕量杂质含量的分析装置,具有可用于测定这些高纯气体中ppb至亚ppb水平的微量杂质含量的气压电离质谱仪和气体 与其集成的色谱仪,可以高效率地测定高纯度气体中的痕量杂质含量。 具有气相色谱仪(8)和大气压电离质谱仪(6)的分析装置设置有用于将从样品气体导入源引入的样品气体直接引入大气压电离质谱仪(10)的系统(10) 6); 用于将样品气体经由气相色谱仪(8)导入大气压电离质谱仪(6)的系统(14a,14b); 以及用于将样品气体的通道切换到这两个系统中的任一个的通道选择器(11,13,15)。
    • 28. 发明授权
    • Air-fuel ratio control system for internal combustion engine
    • 内燃机空燃比控制系统
    • US5623824A
    • 1997-04-29
    • US198395
    • 1994-02-18
    • Fumio YukawaTsutomu Kikuchi
    • Fumio YukawaTsutomu Kikuchi
    • F02D41/14F02D41/34F01N3/28
    • F02D41/1408Y02T10/22
    • An air-fuel ratio control system for an automotive internal combustion engine provided with a three-way catalytic converter disposed in an exhaust gas passageway of the engine. The air-fuel ratio control system is comprised of an oxygen sensor disposed in the exhaust gas passageway downstream of the catalytic converter. The air-fuel ratio of air-fuel mixture to be supplied to the engine is controlled toward a stoichiometric value to cause the three-way catalytic converter to efficiently work under the action of a control unit including a microcomputer. In the control unit, a control constant is set in accordance with the output voltage of the oxygen sensor, and a cycle signal (pulse signal) is cyclically generated. The control constant is compulsorily minutely vibrated under the action of the cycle signal, thereby obtaining an air-fuel ratio correction coefficient. The amount of fuel to be supplied to the engine is calculated in accordance with the air-fuel ratio correction coefficient and injected from a fuel injector valve.
    • 一种用于汽车内燃机的空燃比控制系统,其设置有设置在发动机的废气通道中的三元催化转化器。 空燃比控制系统由设置在催化转化器下游的废气通道中的氧传感器构成。 向发动机供给的空气燃料混合物的空燃比被控制为化学计量值,使得三元催化转化器在包括微型计算机的控制单元的作用下有效地工作。 在控制单元中,根据氧传感器的输出电压来设定控制常数,并循环地产生周期信号(脉冲信号)。 控制常数在循环信号的作用下强制微小地振动,从而获得空燃比校正系数。 根据空燃比校正系数计算供给发动机的燃料量,并从燃料喷射阀喷射。