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1. 发明专利

JP2002246017A NEGATIVE ELECTRODE MATERIAL FOR NON-AQUEOUS SECONDARY BATTERY AND ITS PRODUCING METHOD AND NEGATIVE ELECTRODE 失效
公开(公告)号：JP2002246017A
公开(公告)日：2002-08-30
申请号：JP2001042041
申请日：2001-02-19
申请人： SUMITOMO METAL IND
发明人： YASHIRO MASANARI , KAMINAKA HIDEYA , NEGI NORIYUKI
IPC分类号： H01M4/02 , H01M4/38 , H01M10/40
摘要： PROBLEM TO BE SOLVED: To provide a negative electrode material for a lithium ion secondary battery, with improved discharge capacity and cycle life. SOLUTION: The negative electrode material for the non-aqueous secondary battery comprises either an alloy powder constituted by one or more active phase, which an reversibly store/release Li ions or an alloy powder constituted by the active phase and one or more inactive phase, which will not reversibly store/release alkaline metal elements, wherein a specific electrical resistance is 100×107 Ω.m or less at 25 deg.C when a pressure is applied to the alloy powder of particulate size 45 μm or less, using 9,800 Pa tress. The negative electrode material can be produced under a nonoxidizing atmosphere in the process of a material temperature of 300 deg.C or higher.

2. 发明专利

JP2001297766A NONAQUEOUS ELECTROLYTE SECONDARY CELL, NEGATIVE ELECTRODE MATERIAL OF THE SAME AND MANUFACTURING METHOD OF NEGATIVE ELECTRODE MATERIAL 失效
公开(公告)号：JP2001297766A
公开(公告)日：2001-10-26
申请号：JP2000113911
申请日：2000-04-14
申请人： SUMITOMO METAL IND , MATSUSHITA ELECTRIC IND CO LTD
发明人： NITTA YOSHIAKI , SHIMAMURA HARUNARI , OBIKA MOTOHARU , ASABE KAZUTAKA , TAKESHITA YUKITERU , NEGI NORIYUKI , YAMAMOTO SUKEYOSHI
IPC分类号： H01M10/05 , C22C1/02 , C22C14/00 , C22C19/00 , H01M4/02 , H01M4/36 , H01M4/38 , H01M4/58 , H01M10/40
摘要： PROBLEM TO BE SOLVED: To provide a negative electrode material, using Si which has high theoretical capacity as a negative electrode material, prevented from changing into fine powder, with good cycle life, and a nonaqueous electrolyte secondary cell using the above negative electrode material. SOLUTION: An alloy powder obtained by solidifying the raw material, which has such a composition resulted by making Si and intermetallic compound of Si deposit during solidification, by gas atomization method, is used as a negative electrode material. Oxygen content of the alloy powder is made less than 1000 mass-ppm by satisfying at least one of below stated conditions; (1) Row material of alloy be fused in the atmosphere with the oxygen density of less than 1000 vol-ppm. (2) The temperature of fused raw material be less than (liquidus curve temperature + 500 deg.C). (3) Atomized gas used for the gas atomization method contain inert gas and hydrogen gas of 1-10 vol.%. (4) The temperature at the deposition of solidified allow powder be less than 500 deg.C.

3. 发明专利

JP2001291514A NEGATIVE ELECTRODE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND ITS MANUFACTURING METHOD 失效
公开(公告)号：JP2001291514A
公开(公告)日：2001-10-19
申请号：JP2000104833
申请日：2000-04-06
申请人： SUMITOMO METAL IND , MATSUSHITA ELECTRIC IND CO LTD
发明人： YAMAMOTO SUKEYOSHI , NEGI NORIYUKI , OBIKA MOTOHARU , TAKESHITA YUKITERU , YONEMURA MITSUHARU , NITTA YOSHIAKI , SHIMAMURA HARUNARI , OKAMURA KAZUHIRO
IPC分类号： B22F9/10 , H01M4/02 , H01M4/38 , H01M10/40
摘要： PROBLEM TO BE SOLVED: To provide a negative electrode material for a nonaqueous secondary battery which is higher in discharge capacity and superior in cycle life than the negative electrode material consisting of a conventional carbon material. SOLUTION: This is a negative electrode material which consists of Si phase and a Si-containing intermetallic compound phase obtained by casting an alloy molten metal containing one kind or more elements chosen from among group 2A elements and transition elements in thin flakes by a strip casting method or a centrifugal casting method in which a columnar crystal structure occupies 10% more of the alloy cross-sectional area in the length direction of the columnar crystal on the average and in which the average minor axis grain size of the phase of the intermetallic compound except what is crystallized as eutectic in this columnar crystal structure is 100 μm or less.

4. 发明专利

JPH10265810A HYDROGEN OCCLUSION ALLOY POWDER, ITS PRODUCTION AND ELECTRODE CONSISTING THEREOF 失效
公开(公告)号：JPH10265810A
公开(公告)日：1998-10-06
申请号：JP7170397
申请日：1997-03-25
申请人： SUMITOMO METAL IND
发明人： TAKESHITA YUKITERU , KAMINAKA HIDEYA , NAGATA TATSUO , NEGI NORIYUKI , KAMISHIRO KOICHI
IPC分类号： B22F9/04 , B22F1/00 , H01M4/26 , H01M4/38
摘要： PROBLEM TO BE SOLVED: To obtain hydrogen occlusion alloy powder which has an excellent discharge capacity and charge and discharge repetition life when the power is used for the battery by specifying the ratio of the average grain size of the alloy powder pulverized after a heat treatment to the average grain size of the substantially spherical hydrogen occlusion alloy powder before the heat treatment. SOLUTION: The hydrogen occlusion alloy powder at least partially sintered during the heat treatment is pulverized and the sintered compacts are nearly completely disintegrated. The disintegration is so executed that the ratio of the average grain size of the pulverized powder after the heat treatment to the average grain size of the powder before the heat treatment attains a range of 0.85 to 1.15. Namely, the powder having nearly the same average grain size as the average grain size of the powder before the heat treatment is obtd. Such pulverization is easily attained by using a pulverizing machine of which the main pulverizing mechanism is impact. The hydrogen occlusion alloy powder having the spherical shape can thus be obtd. Consequently, a high-density electrode packed with a large amt. of the hydrogen occlusion alloy by the peculiar high packing property of the spherical powder is obtd. and the capacity of the battery is made higher.

5. 发明专利

JPH0982320A TREATING METHOD FOR HYDROGEN STORAGE ALLOY FOR BATTERY 失效
公开(公告)号：JPH0982320A
公开(公告)日：1997-03-28
申请号：JP23152095
申请日：1995-09-08
申请人： SUMITOMO METAL IND
发明人： NAGATA TATSUO , NEGI NORIYUKI , KAMINAKA HIDEYA , TAKESHITA YUKITERU
IPC分类号： H01M4/38
摘要： PROBLEM TO BE SOLVED: To provide a hydrogen storage alloy capable of constituting a nickel hydrogen battery with high initial activity, less self-discharge, and excellent long period storage ability. SOLUTION: A hydrogen storage alloy containing nickel is immersed in a non-oxidizing acid (example, hydrochloric acid, hydrofluoric acid, or a mixture of these acids) aqueous solution whose dissolved oxygen amount is reduced to 1mg/L or less by deaerating treatment. The initial activity is increased with decrease in the amount of oxide.

6. 发明专利

JPH0873970A HYDROGEN STORAGE ALLOY AND CATHODE FOR NICKEL-HYDROGEN BATTERY USING THE SAME 失效
公开(公告)号：JPH0873970A
公开(公告)日：1996-03-19
申请号：JP21584794
申请日：1994-09-09
申请人： SUMITOMO METAL IND
发明人： NEGI NORIYUKI , KAMINAKA HIDEYA
IPC分类号： C22C16/00 , C22C19/00 , H01M4/38
摘要： PURPOSE: To produce a hydrogen storage alloy excellent in crushability at a low cost by using a Zr-V-Ni-type composition as a base and adding rare earth metals, Mn, and specific metallic elements to the composition. CONSTITUTION: A hydrogen storage alloy, having a composition represented by general formula Zr1-a Mma Nib Vc Mnd Me , is prepared. In the formula, M is one or 12 elements selected from among Cr, Fe, Mo, and Nb, Mm is a misch metal as a mixture of rare earth metals, the symbols (a), (b), (c), (d), and (e) stand for 0.03-

7. 发明专利

JPH06228611A HYDROGEN STORAGE ALLOY POWDER AND ITS PRODUCTION 失效
公开(公告)号：JPH06228611A
公开(公告)日：1994-08-16
申请号：JP1497893
申请日：1993-02-01
申请人： SUMITOMO METAL IND
发明人： TAKESHITA YUKITERU , KAMISHIRO KOICHI , KAMINAKA HIDEYA , TOYOZUMI SUMIO , NEGI NORIYUKI
IPC分类号： B22F1/00 , B22F9/08 , C22C1/08 , C22C19/00 , H01M4/38
摘要： PURPOSE:To produce a hydrogen storage alloy powder capable of increasing the capacity of an Ni-hydrogen secondary battery and which is activated in an early stage. CONSTITUTION:This hydrogen storage alloy powder has 5-40vol.% pores and is obtained by the approached-nozzle gas atomization process while adjusting its conditions. Otherwise, 0.2-5wt.% of volatile element (Mn, Pb, Zn, Sn, Ga, Mg, etc.) is mixed in a melting material when alloy is melted to produce a hydrogen storage alloy powder, the obtained powder is heat-treated in vacuum to volatilize off the element, and the hydrogen storage alloy powder having the pores is obtained.

8. 发明专利

JP2011077055A Anode material for nonaqueous electrolyte secondary battery 审中-公开
标题翻译：非电解电解质二次电池的阳极材料
公开(公告)号：JP2011077055A
公开(公告)日：2011-04-14
申请号：JP2010283277
申请日：2010-12-20
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： NEGI NORIYUKI , YASHIRO MASANARI , KAMINAKA HIDEYA
IPC分类号： H01M4/38 , C22C30/02 , C22C30/04 , H01M4/36
CPC分类号： Y02E60/12
摘要： PROBLEM TO BE SOLVED: To provide an anode material for a nonaqueous electrolyte secondary battery which has a large discharge capacity and excellent cycle characteristics.
SOLUTION: The anode material is made of only two kinds or more of an active phase consisting of an intermetallic compound which can store and release Li reversibly, or further includes an inactive phase which does not store Li. A difference of discharge capacity per volume of larger two kinds of active phases is within a range of two times or more or 18.8 times or less, and then, the active phase which has a larger discharge capacity occupies 80 vol.% or less in volume of the anode material. The larger two kinds of active phases are preferably to be an intermetallic compound belonging to the same crystal system and more preferably to occupy 50 vol.% or more of the anode material.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：解决的问题：提供一种放电容量大，循环特性优异的非水电解质二次电池用负极材料。解决方案：阳极材料仅由两种或更多种由能够可逆地储存和释放Li的金属间化合物组成的活性相或者还包括不存储Li的无活性相制成。较大的两种活性相的体积的放电容量的差异在两倍以上或18.8倍以下的范围内，然后，具有较大放电容量的活性相占体积的80体积％以下的阳极材料。较大的两种活性相优选为属于相同晶体系的金属间化合物，更优选占据阳极材料的50体积％以上。版权所有（C）2011，JPO＆INPIT

9. 发明专利

JP2004103478A Negative electrode material for nonaqueous electrolyte secondary battery 有权
标题翻译：用于非电解电解质二次电池的负极电极材料
公开(公告)号：JP2004103478A
公开(公告)日：2004-04-02
申请号：JP2002266028
申请日：2002-09-11
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： NEGI NORIYUKI , YASHIRO MASANARI , KAMINAKA HIDEYA
IPC分类号： H01M4/38 , H01M4/02 , H01M4/36
CPC分类号： Y02E60/12
摘要： PROBLEM TO BE SOLVED: To provide a negative electrode material for a lithium ion secondary battery having a high discharge capacity and excellent cycle characteristics.
SOLUTION: The negative electrode material for the nonaqueous electrolyte secondary battery is formed of only active phases not less than two kinds containing an intermetallic compound which can reciprocally store or release Li, or further includes an inactive phase which does not store Li. The ratio of the discharge capacity per unit volume, of the top two kinds in volume of active phases, is in the range of 2-20, and the active phase with the larger discharge capacity accounts for not more than 80 vol.% of the negative electrode material. The top two active phases in terms of volume are preferably the intermetallic compounds belonging to the same crystal system, and preferably account for not less than 50 vol.% of the negative electrode material. The average crystal grain diameter of the active phase is preferably not more than 10μm.
COPYRIGHT: (C)2004,JPO
摘要翻译：解决的问题：提供具有高放电容量和优异的循环特性的锂离子二次电池用负极材料。解决方案：用于非水电解质二次电池的负极材料仅由不少于两种含有能够相互储存或释放Li的金属间化合物的活性相形成，或者还包括不存储Li的无活性相。活性相体积的前两种单位体积的放电容量的比例在2-20的范围内，放电容量较大的活性相的比例不超过80体积％负极材料。体积方面的前两个活性相优选为属于相同结晶体系的金属间化合物，优选占负极材料的50体积％以上。活性相的平均结晶粒径优选为10μm以下。版权所有（C）2004，JPO

10. 发明专利

JP2001291513A MANUFACTURING METHOD OF NEGATIVE ELECTRODE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY 失效
公开(公告)号：JP2001291513A
公开(公告)日：2001-10-19
申请号：JP2000104832
申请日：2000-04-06
申请人： SUMITOMO METAL IND , MATSUSHITA ELECTRIC IND CO LTD
发明人： OBIKA MOTOHARU , ASABE KAZUTAKA , TAKESHITA YUKITERU , NEGI NORIYUKI , YAMAMOTO SUKEYOSHI , NITTA YOSHIAKI , SHIMAMURA HARUNARI , OKAMURA KAZUHIRO
IPC分类号： B22F9/08 , B22F1/00 , C22C1/04 , C22C14/00 , C22C19/00 , H01M4/02 , H01M4/38
摘要： PROBLEM TO BE SOLVED: To manufacturing a negative electrode material of a good cycle life, wherein fine powder formation is suppressed by using a high theoretical capacity as a negative electrode material for a nonaqueous electrolyte secondary battery. SOLUTION: Alloy powder obtained by solidifying is fusion raw material of the composition which is designed to precipitate while an intermetallic compound of Si and Si are being solidified (lower in temperature than the alloy's liquid curve temperature, +500 deg.C) by means of a gas atomization method is made to be the negative electrode material wherein one kind or more chosen from Ar, He and N2 is used as a spray gas. Particle size is controlled so that the powder particle diameter D(μm) not less than 80 vol% of alloy powder satisfies a formula D

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