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1. 发明专利

JP2001110421A SUBSTANCE FOR ACTIVATING POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY AND THE LITHIUM SECONDARY BATTERY 失效
公开(公告)号：JP2001110421A
公开(公告)日：2001-04-20
申请号：JP29194599
申请日：1999-10-14
申请人： HITACHI LTD , HITACHI MAXELL
发明人： HONBO MICHIKO , GOTO AKIHIRO , KASAI MASAHIRO , MURANAKA TADASHI , HOTTA YOSHITOSHI
IPC分类号： C01G49/00 , C01G45/00 , C01G51/00 , C01G53/00 , H01M4/505 , H01M4/525 , H01M10/05 , H01M4/58 , H01M4/02
摘要： PROBLEM TO BE SOLVED: To provide a lithium secondary battery which has a large electric power capacity and a long service life. SOLUTION: A lithium secondary battery, which is made of nonaqueous electrolyte comprising a negative electrode 3, a positive electrode 2, and lithium salt contains composite oxide as a substance for activating the positive electrode, where the composite oxide is indicated by the general formula Lix+aMn2-a-bMbQcO4+d (where M is one or more kinds selected from among Ni, Fe, Co, and Cu, and Q is one or more selected among C, N, S, P, Si, F, Cl, I, and Br, while x, a, b, c, and d are respectively 0

2. 发明专利

JP2001243982A LITHIUM SECONDARY BATTERY 失效
公开(公告)号：JP2001243982A
公开(公告)日：2001-09-07
申请号：JP2000060411
申请日：2000-03-01
申请人： HITACHI LTD , HITACHI MAXELL
发明人： HONBOU HIDETOSHI , MURANAKA TADASHI
IPC分类号： H01M10/05 , H01M4/131 , H01M4/505 , H01M4/525 , H01M4/62 , H01M10/052 , H01M10/0567 , H01M10/40 , H01M4/58
摘要： PROBLEM TO BE SOLVED: To provide a lithium secondary battery that has a high discharge voltage (4.2 V or more). SOLUTION: The lithium secondary battery comprises a positive electrode and a negative electrode which occlude and discharge lithium ion and an electrolyte containing the above lithium ion. The above positive electrode is composed of a positive electrode active material, a conductive material, a binder and a current collector, and the above conductive material is made of amorphous graphite, and the above electrolyte contains at least one or more kinds of a compound as expressed in the formula (1) or formula (2) (wherein, R1, R2 shows alkyl radical of carbon number 1 to 10 and R1 and R2 may be same.) and has an average discharge voltage of 4.2 V or more.

3. 发明专利

JP2000149945A LITHIUM ION SECONDARY BATTERY 失效
公开(公告)号：JP2000149945A
公开(公告)日：2000-05-30
申请号：JP31887298
申请日：1998-11-10
申请人： HITACHI LTD , HITACHI MAXELL
发明人： HONBOU HIDETOSHI , HONBO MICHIKO , MURANAKA TADASHI
IPC分类号： H01M10/05 , C01B31/02 , C01B31/04 , H01M4/505 , H01M4/525 , H01M4/587 , H01M10/0525 , H01M10/0567 , H01M10/0568 , H01M10/0569 , H01M4/58 , H01M4/02 , H01M10/40
摘要： PROBLEM TO BE SOLVED: To provide a lithium ion secondary battery of high safety using a nickel positive electrode. SOLUTION: In this lithium ion secondary battery where a positive electrode 10 and a negative electrode 12 storing and releasing reversibly lithium ion, and an organic electrolyte with a dissolved electrolyte containing lithium ion are provided, and where the positive and negative electrodes 10, 12 are arranged via a separator 11, an active material of the positive electrode 10 contains a compound expressed by the formula: Li NixMyCozO2 (M represents Mn or Al, x+y+z=1), an active material of the negative electrode 12 contains a carbon material having 0.337 nm of graphite interlayer distance (d002) to store and release reversibly lithium ion, the electrolyte is LiPF6, and a concentration of LiPF6 is 1.5-2.0 mol/l.

4. 发明专利

JP2001068168A LITHIUM SECONDARY BATTERY 失效
公开(公告)号：JP2001068168A
公开(公告)日：2001-03-16
申请号：JP24507199
申请日：1999-08-31
申请人： HITACHI LTD , HITACHI MAXELL
发明人： HONBO MICHIKO , GOTO AKIHIRO , MURANAKA TADASHI
IPC分类号： H01M10/05 , C01B31/02 , H01M4/505 , H01M4/525 , H01M10/0525 , H01M10/40 , H01M4/58
摘要： PROBLEM TO BE SOLVED: To obtain a positive electrode active material durable to high voltage by specifying charging end voltage, average discharging voltage of a positive electrode vs. reference potential of Li, and discharging end voltage of the positive electrode vs. reference voltage of Li. SOLUTION: A lithium secondary battery is characterized in that charging end voltage is larger than 4.5 V and smaller than 4.7 V, average discharge voltage of a positive electrode vs. reference voltage of Li is larger than 4.0 V and smaller than 4.4 V, discharging end voltage of the positive electrode vs. reference voltage of Li is at least 3.2 V, and volume energy is larger than 430 Wh/L. A positive electrode active material preferably contains a compound oxide represented by general formula, LiwMvCoxQ1-v-xO2 (wherein, M is at least one kind selected from Ge, Ti, Zr, Y, and Si, Q is at least one kind selected from Ni and Fe, 0

5. 发明专利

JP2004022448A Lead-acid battery, carbon material and its manufacturing method 有权
公开(公告)号：JP2004022448A
公开(公告)日：2004-01-22
申请号：JP2002178577
申请日：2002-06-19
申请人： Hitachi Ltd , Shin Kobe Electric Mach Co Ltd , 新神戸電機株式会社 , 株式会社日立製作所
发明人： HOSHI EIJI , HONBO MICHIKO , MURANAKA TADASHI , TAKEUCHI SEIJI
IPC分类号： C01B31/02 , C01B31/00 , C01B31/04 , C01B31/08 , C04B35/52 , C04B35/528 , C04B35/83 , H01M4/02 , H01M4/14 , H01M4/20 , H01M4/62 , H01M10/06
CPC分类号： C04B35/528 , B82Y30/00 , C04B35/522 , C04B35/83 , C04B2235/3279 , C04B2235/405 , C04B2235/5409 , C04B2235/5454 , C04B2235/80 , H01M4/02 , H01M4/20 , H01M4/62 , H01M4/625 , H01M4/626 , H01M10/06 , H01M2004/027 , Y02E60/126 , Y02P70/54
摘要： PROBLEM TO BE SOLVED: To provide a lead-acid battery with excellent high-rate charging capability by enhancing conductivity of lead sulfate and by improving solubility of lead sulfate to lead to smoothly progress the charge reaction of a negative electrode active material, and to provide a carbon material excellent in charge accepting performance for realizing it. SOLUTION: This lead-acid battery has a negative electrode, a positive electrode and an electrolyte. In the lead-acid battery, the negative electrode contains nickel-supporting carbon prepared by supporting nickel and/or a nickel-containing compound to carbon; and the particle diameter of each primary particle of nickel and/or the nickel-containing compound is smaller than that of the primary particle of carbon. COPYRIGHT: (C)2004,JPO

6. 发明专利

JP2000173622A LITHIUM SECONDARY BATTERY 失效
公开(公告)号：JP2000173622A
公开(公告)日：2000-06-23
申请号：JP34822498
申请日：1998-12-08
申请人： HITACHI LTD
发明人： TAKEUCHI SEIJI , HONBOU HIDETOSHI , KANEDA JUNYA , MURANAKA TADASHI
IPC分类号： H01M10/05 , B82Y40/00 , B82Y99/00 , C01B31/02 , C01B31/04 , H01M4/13 , H01M4/133 , H01M4/505 , H01M4/525 , H01M4/587 , H01M4/62 , H01M10/052 , H01M10/0565 , H01M10/0566 , H01M4/02 , H01M4/58 , H01M10/40
摘要： PROBLEM TO BE SOLVED: To obtain a lithium secondary battery having high capacity and a superior charging and discharging cycle characteristic. SOLUTION: This battery comprises a negative electrode 7, a positive electrode and an electrolytic solution. The negative electrode 7 is formed, such that a current collector holds a mixture of graphite or amorphous carbon and conductive auxiliaries of carbon particles carried with a metal, capable of forming no alloy with lithium. The positive electrode is formed by coating both surfaces of an aluminum foil, (i.e., a current collector) with mix slurry, comprising LiCo2 as a positive electrode active material, artificial graphite as a conductive agent, and polyvinylidene fluoride as a binder in the weight ratio of 87:9:4, then by drying up and rolling it. The electrolytic solution is formed by dissolving LiPF6 as an electrolyte at a concentration of 1 M/l, in a solvent prepared by mixing ethylene carbonate(EC) and dimethyl carbonate(DMC) in the volume ratio of 1:2.

7. 发明专利

JP2000067847A SECONDARY BATTERY AND ASSEMBLED BATTERY 失效
公开(公告)号：JP2000067847A
公开(公告)日：2000-03-03
申请号：JP23809298
申请日：1998-08-25
申请人： HITACHI LTD
发明人： HONBOU HIDETOSHI , TAKEUCHI SEIJI , MURANAKA TADASHI
IPC分类号： H01M2/10 , H01M2/34 , H01M10/04 , H01M10/05 , H01M10/0587 , H01M10/36 , H01M10/40
摘要： PROBLEM TO BE SOLVED: To provide a battery having a battery structure having high safety by constituting the battery such that a positive electrode, a negative electrode and an electrode group disposed between the positive electrode and the negative electrode through a separator, wound around it through a center pin and stored in a battery outer can or an outer container have a melting material melting at a specific temperature in the center pin of a collector portion of the positive electrode or the negative electrode. SOLUTION: A positive electrode, a negative electrode and an electrode group disposed between the positive electrode and the negative electrode through a separator are stored in a battery outer can or an outer container. A collector portion to which a melting material having an electrical insulation is mounted has a spring contact structure or a pressure valve structure. In the case where a battery temperature rises to a range of 70-200 deg.C due to a self-exothermic, the melting material melts, the spring or the pressure valve of the connector portion is operated by a volume change of the melting material, an electrical contact point becomes a closed circuit state and an electric conduction of the positive electrode or the negative electrode is shielded. Then, the spring contacting point structure and the melting material are provided in the center pin.

8. 发明专利

JPH1140200A LITHIUM SECONDARY BATTERY 失效
公开(公告)号：JPH1140200A
公开(公告)日：1999-02-12
申请号：JP19361197
申请日：1997-07-18
申请人： HITACHI LTD
发明人： YOSHIKAWA MASANORI , IGAWA MICHIKO , DOSONO TOSHINORI , NAGANUMA YOSHIO , ANDO HISASHI , MURANAKA TADASHI
IPC分类号： H01M4/62 , H01M4/13 , H01M10/05 , H01M10/0525 , H01M10/0566 , H01M10/058 , H01M10/40 , H01M4/02
摘要： PROBLEM TO BE SOLVED: To make a battery highly safe by adding a substance, which causes phase transfer accompanied with latent heat within a specified temperature range to the periphery of a positive electrode or to the positive electrode or to the gap in a battery system. SOLUTION: In a lithium secondary battery comprising a negative electrode, a positive electrode, and a nonaqueous electrolytic solution containing a lithium salt, at least one substance which causes phase transfer accompanied with latent heat within a temperature range from 150 deg.C or higher to 600 deg.C or lower is added to the periphery of the positive electrode or to the positive electrode itself. With such a structure, the heat-absorbing material is made to cause a phase transfer (accompanied by latent heat) through generation from the positive electrode active material, and the heat is absorbed as the latent heat. Even if the material absorbs heat, the material causes no temperature increase during the phase transfer of the material, so that the temperature increase in the inside of the battery can be suppressed. Although heat-absorbing material can be selected depending on the heat generating temperature (about 150-300 deg.C) of the positive electrode active material, and may be selected from materials having phase transfer temperature within 150-600 deg.C, the battery is put in hazadous condition at the melting temperature of aluminum (melting point 660 deg.C).

9. 发明专利

JPH1116566A BATTERY 失效
公开(公告)号：JPH1116566A
公开(公告)日：1999-01-22
申请号：JP16371697
申请日：1997-06-20
申请人： HITACHI LTD
发明人： IGAWA MICHIKO , TSURUOKA SHIGEO , YOSHIKAWA MASANORI , MURANAKA TADASHI
IPC分类号： H01M10/05 , H01M2/16 , H01M4/02 , H01M4/36 , H01M4/505 , H01M4/525 , H01M4/587 , H01M4/58 , H01M10/40
摘要： PROBLEM TO BE SOLVED: To improve the safety by using a positive electrode active material covered with a metal containing at least one selected from Ti, Al, Sn, Bi, Cu, Si, Ga, W, Zr, B, and Mo and/or an intermetallic compound obtained by the combination of a plurality of thereof, and/or an oxide thereof. SOLUTION: The positive electrode surface on the side opposite to a negative electrode is preferably covered with a metal containing at least one selected from Ti, Al, Sn, Bi, Cu, Si, Ga, W, Zr, B, and Mo and/or an intermetallic compound obtained by the combination of a plurality of thereof, and/or an oxide thereof. The separator surface on the side opposite to the positive electrode is preferably covered with a metal containing at least one selected from Ti, Al, Sn, Bi, Cu, Si, Ga, W, Zr, B, and Mo and/or an intermetallic compound obtained by the combination of a plurality of thereof, and/or an oxide thereof.

10. 发明专利

JPH10208744A BATTERY 失效
公开(公告)号：JPH10208744A
公开(公告)日：1998-08-07
申请号：JP1503297
申请日：1997-01-29
申请人： HITACHI LTD
发明人： IGAWA MICHIKO , TSURUOKA SHIGEO , KOMATSU YOSHIMI , YAMAUCHI SHIYUUKO , YOSHIKAWA MASANORI , MURANAKA TADASHI
IPC分类号： H01M10/05 , H01M4/485 , H01M4/52 , H01M4/525 , H01M4/587 , H01M10/052 , H01M10/0565 , H01M10/0568 , H01M10/0569 , H01M4/58 , H01M4/02 , H01M10/40
摘要： PROBLEM TO BE SOLVED: To provide a battery excellent in high capacity, long life, lowering of overvoltage at the time of charging/discharging, a rate characteristic, a self-discharge characteristic and safety, etc., by using a compound oxide as a positive electrode active material of a battery which is capable of reversibly performing plural numbers of times of charging/discharging, more particularly, a secondary battery for which non-aqueous electrolyte is used. SOLUTION: As a positive electrode active material of a battery which uses a non-aqueous electrolyte including lithium salt and is capable of reversibly performing plural numbers of times of charging/discharging, a compound oxide shown by a general formula: Aw Dv Nix Aly Nz O2 (A is at least one kind selected among alkali metal; D is at least one kind selected among Mg and B; N is at least one kind selected among Si, Ca, Cu, P, In, Sn, Mo, Nb, Y, Bi, Ga; w, v, x, y, z satisfy 0.05

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