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1. 发明专利

JPH0982356A NICKEL-HYDROGEN SECONDARY BATTERY 失效
公开(公告)号：JPH0982356A
公开(公告)日：1997-03-28
申请号：JP23403795
申请日：1995-09-12
申请人： TOSHIBA BATTERY , TOSHIBA CORP
发明人： HATANAKA CHIZURU , HIRUMA MITSUO , HAYASHIDA HIROTAKA
IPC分类号： H01M2/16 , H01M10/30
摘要： PROBLEM TO BE SOLVED: To provide a nickel-hydrogen secondary battery which is excellent in a self-discharge characteristic at high temperature storage time by improving a separator and whose charge-discharge cycle service life is improved. SOLUTION: A nickel-hydrogen secondary battery is provided with a positive electrode 2 containing a nickel compound, a negative electrode 4 containing hydrogen storage alloy, a separator 3 interposed between the positive electrode 2 and the negative electrode 4 and alkaline electrolyte. The separator 3 is formed of a polyolefine type synthetic resin fiber-made sheet-like material by performing graft copolymerization on a vinyl monomer having a carboxyl group, and the carboxyle group is formed in a salt shape by processing it by an alkaline aqueous solution whose kind and concentration ratio are the same with the alkaline electrolyte.

2. 发明专利

JPH06150919A METALLIC OXIDE-HYDROGEN SECONDARY BATTERY 失效
公开(公告)号：JPH06150919A
公开(公告)日：1994-05-31
申请号：JP29838792
申请日：1992-11-09
申请人： TOSHIBA BATTERY , TOSHIBA CORP
发明人： HIRUMA MITSUO , CHIBA NOBUAKI , SHINDO CHIZURU , HOSOBUCHI KAORU , SARUWATARI ICHIRO , YAMAMOTO MASAAKI
IPC分类号： H01M4/24 , C22C19/00 , H01M4/38 , H01M10/34
摘要： PURPOSE:To provide a metallic oxide-hydrogen secondary battery having improved cycle life and reduced lifetime dispersion. CONSTITUTION:Regarding a metallic oxide-hydrogen secondary battery having a structure where a positive electrode, an alkaline electrolyte and a negative electrode containing hydrogen storage alloy powder of rare earth are housed in a vessel, the negative electrode is characteristic in that the electrode contains a rare earth hydrogen storage alloy expressed by a general formula of LmNiwCoxMnyAlz, where Lm is at least one type selected among rare earth elements, the atomic ratios of (w), (x), (y) and (z) are respectively in the range of 3.90 /g or less as per BET method, when hydrogenated once and crushed under pressure between 5 and 10atm.g at a temperature between 2 deg.C and 30 deg.C.

3. 发明专利

JPH11283617A ALKALINE SECONDARY BATTERY 失效
公开(公告)号：JPH11283617A
公开(公告)日：1999-10-15
申请号：JP8374698
申请日：1998-03-30
申请人： TOSHIBA BATTERY
发明人： NARUMI KEISUKE , HIRUMA MITSUO , IRIE SHUICHIRO
IPC分类号： H01M4/38 , H01M4/24 , H01M4/26 , H01M10/24
摘要： PROBLEM TO BE SOLVED: To improve initial activity and cycle characteristic by providing a negative electrode containing a mixed hydrogen storage alloy mixed with a hydrogen storage alloy having the Zr-Ni Laves phase and a hydrogen storage alloy having the Ti-Zr-Ni Laves phase in the inactive gas atmosphere by the mechanical grinding method. SOLUTION: An electrode group 5 laminated and spirally wound with a positive electrode 2, a separator 3 and a negative electrode 4 is stored in a bottomed cylindrical container 1. The negative electrode 4 is arranged on the outermost periphery of the electrode group 5 and is kept in electrical contact with the container 1. The negative electrode 4 contains a mixed hydrogen storage alloy mixed with a hydrogen storage alloy having the Zr-Ni Laves phase excellent in initial activity and a hydrogen storage alloy having the Ti-Zr-Ni Laves phase excellent in cycle characteristic in the inactive gas atmosphere by the mechanical grinding method. Two kinds of hydrogen storage alloys are mixed, the surface is reformed, and the characteristic can be improved.

4. 发明专利

JPH11273673A Alkaline secondary battery 失效
标题翻译：碱性二次电池
公开(公告)号：JPH11273673A
公开(公告)日：1999-10-08
申请号：JP7692198
申请日：1998-03-25
申请人： Toshiba Battery Co Ltd , 東芝電池株式会社
发明人： NARUMI KEISUKE , HIRUMA MITSUO , IRIE SHUICHIRO
IPC分类号： H01M4/38 , C22C19/00 , H01M4/24 , H01M10/30
CPC分类号： Y02E60/124
摘要： PROBLEM TO BE SOLVED: To provide an alkaline secondary battery excellent in initial activity and cycle characteristic, having a negative electrode which has an AB
2 type hydrogen storage alloy.
SOLUTION: An alkaline storage battery has a negative electrode which includes a hydrogen storage alloy having a composition containing Zr, Ti, Ni, and at least Mn and V as the substituent elements of Ni, the hydrogen storage alloy being such that the amount of elution of the zirconium when the alloy is dipped in a solution of potassium hydroxide of 30 wt.% concentration at 65°C for 30 minutes is 0.7 to 2.5 wt.% of the zirconium in the composition.
COPYRIGHT: (C)1999,JPO
摘要翻译：要解决的问题：提供具有优异的初始活性和循环特性的碱性二次电池，其具有具有AB2型储氢合金的负极。解决方案：碱性蓄电池具有负极，其包括具有包含Zr，Ti，Ni，至少Mn和V作为Ni的取代基元素的组成的储氢合金，储氢合金使得洗脱量当将合金浸入在65℃30分钟浓度为30重量％的氢氧化钾溶液中30分钟时，锆的组成为0.7-2.5重量％。

5. 发明专利

JPH11162462A ALKALINE SECONDARY BATTERY 失效
公开(公告)号：JPH11162462A
公开(公告)日：1999-06-18
申请号：JP33177697
申请日：1997-12-02
申请人： TOSHIBA BATTERY
发明人： HIRUMA MITSUO , NARUMI KEISUKE , IRIE SHUICHIRO , HATANAKA CHIZURU
IPC分类号： H01M4/38 , H01M4/24 , H01M10/30
摘要： PROBLEM TO BE SOLVED: To enhance capacity and lengthen the charge/discharge cycle life by using a negative electrode practically containing AB2 type Laves phase hydrogen storage alloy to which electroless nickel plating comprising particles having the specified particle size is applied. SOLUTION: 0.5-10 pts.wt. electroless deposition nickel particles having a particle size of 50-500 nm based on 100 pts.wt. hydrogen storage alloy are adsorbed onto the surface of a hydrogen storage alloy by a dipping method to form a negative electrode 4. The negative electrode 4 has structure obtained by carrying negative electrode paste containing hydrogen storage alloy powder, a binder, and a conductive material on a conductive core, and as the conductive material, 5 pts.wt. or less carbon black or graphite are mixed to 100 pts.wt. hydrogen storage alloy powder, and as the conductive core, a two dimensional structure material such as punched metal or a three dimensional structure material such as foamed metal is used. Alkaline electrolyte resistance of the hydrogen storage alloy is increased without obstructing the absorbing/releasing capability of the hydrogen storage alloy, and the charge/discharge cycle life can be lengthened.

6. 发明专利

JPH11144727A ALKALINE SECONDARY BATTERY 失效
公开(公告)号：JPH11144727A
公开(公告)日：1999-05-28
申请号：JP30584697
申请日：1997-11-07
申请人： TOSHIBA BATTERY
发明人： NARUMI KEISUKE , HIRUMA MITSUO , IRIE SHUICHIRO
IPC分类号： H01M4/38 , H01M10/30
摘要： PROBLEM TO BE SOLVED: To provide an alkaline secondary battery which is provided with a negative electrode having an AB2 type hydrogen storage alloy that has superior initial activation and cycle characteristics. SOLUTION: This is provided with a negative electrode 4, including a hydrogen storage alloy having a composition Zr, Ti, Ni, and at least Mn, V as a substitution elements of Ni, and that an eluting quantity of vanadium, when dipped in a potassium hydroxide solution with a concentration of 30 wt. % at 65 deg.C for thirty minutes is 3 to 10 wt.% to vanadium in the composition. The hydrogen storage alloy has a composition expressed by a formula (Zr1-u Tiu ) Niv-w-x-y Mnw Vx My . In the formula, M is at least one element selected from among Co, Cr, Al, Fe, Cu, Mn, and Zn, and u, v, w, x, and y are respectively 0.05

7. 发明专利

JPH0973901A ALKALINE SECONDARY BATTERY 失效
公开(公告)号：JPH0973901A
公开(公告)日：1997-03-18
申请号：JP24826995
申请日：1995-09-04
申请人： TOSHIBA BATTERY
发明人： HIRUMA MITSUO , HATANAKA CHIZURU
IPC分类号： H01M4/52 , H01M10/24
摘要： PROBLEM TO BE SOLVED: To provide an alkaline secondary battery with high utilization factor of a positive electrode and high discharge capacity. SOLUTION: An alkaline secondary battery has a positive electrode 2 prepared by filling paste containing nickel compound particles acting as an active material in a current collector, a negative electrode 4, and an alkaline electrolyte. The surface of each nickel compound particle is covered with a layer comprising cobalt oxyhydroxide particles having a particle size of 1μm or less.

8. 发明专利

JPH0896832A ALKALINE SECONDARY BATTERY 失效
公开(公告)号：JPH0896832A
公开(公告)日：1996-04-12
申请号：JP23113394
申请日：1994-09-27
申请人： TOSHIBA BATTERY
发明人： HATANAKA CHIZURU , HIRUMA MITSUO , TERAOKA HIROHITO
IPC分类号： H01M10/30
摘要： PURPOSE: To enhance charging efficiency at high temperature providing a positive electrode, a negative electrode, and a specific alkaline electrolyte. CONSTITUTION: A positive electrode 1 is prepared by filling paste containing nickel hydroxide powder, a conductor, a binder, and water in a current collector, drying the paste, pressing it, then cutting the paste coated current collector in a specified size. A negative electrode 2 is prepared by filling paste obtained by kneading a negative active material, a conductor, a binder, and water in a current collector, drying the paste, and forming it. A separator 3 is interposed between the positive electrode 1 and the negative electrode 2, and they are spirally wound, put into a cylindrical container 4 with a bottom and a circular sealing plate 6 having a hole 5 in the center is arranged in an upper opening of the container 4. An alkaline electrolyte containing 0.01-0.20wt.% boron is poured in the container 4 through the hole 5.

9. 发明专利

JPH0896807A ALKALINE SECONDARY BATTERY 失效
公开(公告)号：JPH0896807A
公开(公告)日：1996-04-12
申请号：JP23091594
申请日：1994-09-27
申请人： TOSHIBA BATTERY
发明人： HATANAKA CHIZURU , HIRUMA MITSUO , TERAOKA HIROHITO
IPC分类号： H01M4/32 , H01M10/30
摘要： PURPOSE: To provide an alkaline secondary battery having a positive electrode with high charging efficiency at high temperature. CONSTITUTION: An alkaline secondary battery has a positive electrode 1 prepared by filling paste containing nickel hydroxide powder as the main component in a current collector, a negative electrode 2, a separator 3 placed between the positive electrode 1 and the negative electrode 2, and an alkaline electrolyte. The positive electrode 1 contains metallic manganese or a manganese compound, and the content of the metallic manganese or the manganese compound is 1-10mg per Ah capacity of the positive electrode in manganese element equivalent.

10. 发明专利

JPH0668873A METAL OXIDE/HYDROGEN BATTERY 失效
公开(公告)号：JPH0668873A
公开(公告)日：1994-03-11
申请号：JP9177591
申请日：1991-01-29
申请人： TOSHIBA BATTERY
发明人： HIRUMA MITSUO , SHINDO CHIZURU , CHIBA NOBUAKI , SARUWATARI ICHIRO , TAKENO KAZUHIRO
IPC分类号： H01M4/24 , H01M4/38
摘要： PURPOSE:To extend the charging/discharging cycle life of a battery to a large degree. CONSTITUTION:In a metal oxide/hydrogen battery provided with a positive electrode, alkaline electrolyte, and a negative electrode chiefly consisting of rare earth hydrogen storage alloy, the rare earth hydrogen storage alloy of the relative surface area of 0.20-0.05m /g according to BET method at the time of hydrogenization and pulverization, is pulverized for the negative electrode. For example, an alloy of composition indicated as LmNi4.2Co0.2Mn0.3Al0.3, is pulverized at 10 deg.C, and under hydrogen pressure of 10atm, to make the specific surface area 0.20-0.05m /g, to which polytetrafluoroethylene, carbon black, and water are added into paste form, and this is applied to a punched metal and is dried, and the negative electrode is thus formed.

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