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1. 发明专利

JPH01246763A NONAQUEOUS SOLVENT BATTERY 失效
公开(公告)号：JPH01246763A
公开(公告)日：1989-10-02
申请号：JP7211188
申请日：1988-03-28
申请人： NIPPON TELEGRAPH & TELEPHONE , TOSHIBA CORP
发明人： YAMAKI JUNICHI , SAKURAI YOJI , OSAKI TAKAHISA , YAMADA SHUJI , HASHIMOTO SUSUMU
IPC分类号： H01M4/48
摘要： PURPOSE:To obtain a nonaqueous solvent battery with large battery capacity and preferable charging/discharging cycle by melting vanadium pentoxide as positive electrode active material, at a specified temperature and employing the compound obtained by cooling the melted vanadium pentoxide. CONSTITUTION:A group of electrodes 3 are enclosed in a stainless case 1 through an insulator 2. The group of electrodes 3 has the structure that a strip member in which positive electrodes 4, separators 5 and negative electrodes 6 are sequentially laminated is wound in spiral with a negative electrode being provided outermost. As for the active material of the positive electrode 4, powders of V2O5 and P2O5 are mixed with each other, melted at 800 deg.C to 1200 deg.C and cooled down rapidly to obtain pelletized material. This material is ground into powder of noncrystal V2O5 compound. The powder is mixed with powder of acetylene black and polytetrafluoroethylene to be a sheet which is pressed and fixed on an expander metal current collector to be a strip. Therefore, a nonaqueous solvent battery with large battery capacity and preferable charging/discharging cycle is obtained.

2. 发明专利

JPH01128355A NONAQUEOUS SOLVENT CELL 失效
公开(公告)号：JPH01128355A
公开(公告)日：1989-05-22
申请号：JP28297187
申请日：1987-11-11
申请人： NIPPON TELEGRAPH & TELEPHONE , TOSHIBA CORP
发明人： YAMAKI JUNICHI , SAKURAI YOJI , SAWA TAKAO , HASHIMOTO SUSUMU , OSAKI TAKAHISA , YAMADA SHUJI
IPC分类号： H01M4/02 , H01M4/48 , H01M10/052 , H01M10/0566
摘要： PURPOSE:To improve the cell capacity, the charge and discharge cycle life, and the like, by using a compound mainly of a noncrystalline vanadium pentoxide in which a specific amount of crystal-phase vanadium pentoxide is added as a positive electrode active substance. CONSTITUTION:In a compound mainly of a noncrystalline vanadium pentoxide, a crystalline phase compound of 1 to 50vol.% is added, and the resultant compound is used as the positive electrode active substance. As the said compound, a compound shown as the general formula (V2O5)100-xMx [where M is B2O3, P2O5, SiO2, Bi2O3, TeO2, WO3, MoO2, NbO2, GeO2, Ag2O, CuO, PbO, Sb2O3, SnO2, or TiO2, and 0

3. 发明专利

JPH03105858A MANUFACTURE OF NONAQUEOUS SOLVENT SECONDARY BATTERY 失效
公开(公告)号：JPH03105858A
公开(公告)日：1991-05-02
申请号：JP24051589
申请日：1989-09-19
申请人： TOSHIBA CORP , NIPPON TELEGRAPH & TELEPHONE
发明人： OKADA SHIGETO , YAMAKI JUNICHI , YAMADA SHUJI , OSAKI TAKAHISA
IPC分类号： H01M10/05 , H01M4/485 , H01M10/052 , H01M10/0566
摘要： PURPOSE:To obtain a nonaqueous solvent secondary battery which is excellent in the properties of battery capacity and charge and discharge cycle life, etc., by melting a specific crystalline compound in inactive atmosphere and then quenching the compound to form an amorphous compound, and preparing a positive electrode active material made from the amorphous compound. CONSTITUTION:A crystalline compound expressed by the expression I is melted in inactive atmosphere and is quenched to form an amorphous compound, and a positive electrode active material made from the amorphous compound is prepared. In the expression I, M is B2O3, P2O5, SiO2, Bi2O3, TeO2, WO3, MoO2, NbO2, GeO2, Ag2O, CuO, PbO, Sb2O3, SnO2, and TiO2, and x is 0.3

4. 发明专利

JPH01128370A NONAQUEOUS SOLVENT SECONDARY CELL 失效
公开(公告)号：JPH01128370A
公开(公告)日：1989-05-22
申请号：JP28296987
申请日：1987-11-11
申请人： NIPPON TELEGRAPH & TELEPHONE , TOSHIBA CORP
发明人： YAMAKI JUNICHI , SAKURAI YOJI , YAMADA SHUJI , OSAKI TAKAHISA
IPC分类号： H01M4/13 , H01M6/10 , H01M10/05 , H01M10/052 , H01M10/0566 , H01M10/058
摘要： PURPOSE:To prevent the generation of short circuit during the charge and the discharge and to maintain the discharge capacity by making the area of a negative electrode larger than that of a positive electrode, and arranging a part of the periphery of the negative electrode not to oppose to the positive electrode. CONSTITUTION:A negative electrode 4 which consists of lithium or a lithium alloy is made 39mm in width and 130mm in length, while a positive electrode 6 is made 33mm in width and 120mm in length, for example, and they are wound in a spiral form placing a separator 5 between them. The area of the negative electrode 4 is made larger than that of the positive electrode 6 and the negative electrode 4 is superposed on the positive electrode 6 projecting 1mm from both ends along the longitudinal direction of the positive electrode 6. As a result, the tranfer probability of lithium ions taken in to the positive electrode 6 in the discharge to the negative electrode 4 is increased, and the lithium is not deposited easily on the inner wall of the metal container 1. Consequently, a short circuit between the deposited lithium and the positive electrode 6 is prevented, the deterioration of capacity is suppressed, and the charge and discharge performance is improved.

5. 发明专利

JPH01128354A NONAQUEOUS SOLVENT CELL 失效
公开(公告)号：JPH01128354A
公开(公告)日：1989-05-22
申请号：JP28297087
申请日：1987-11-11
申请人： NIPPON TELEGRAPH & TELEPHONE , TOSHIBA CORP
发明人： YAMAKI JUNICHI , SAKURAI YOJI , OSAKI TAKAHISA , YAMADA SHUJI , SAWA TAKAO , HASHIMOTO SUSUMU
IPC分类号： H01M4/02 , H01M4/48 , H01M10/052 , H01M10/0566
摘要： PURPOSE:To improve the cell capacity, the charge and discharge cycle life, the storage property, and the like, by using a compound obtained by melting and quenching a compound composed mainly of vanadium pentoxide at a specific temperature as a positive electrode active substance. CONSTITUTION:As a positive electrode active substance, is used a compound obtained by melting a compound mainly of vanadium pentoxide at a temperature higher than 1200 deg.C and lower than the dissolution point, and then quenching. As the above compound, a compound shown as the general formula (V2 O5)100-xMx [where M is B2O3, P2O5, SiO2, Bi2O3, TeO2, WO3, MoO2, NbO2, GeO2, Ag2O, CuO, PbO, Sb2O3, SnO2, or TiO2, and 0

6. 发明专利

JPH1154150A SECONDARY BATTERY HAVING NONAQUEOUS SOLVENT ELECTROLYTE 失效
公开(公告)号：JPH1154150A
公开(公告)日：1999-02-26
申请号：JP22122797
申请日：1997-08-04
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： HAYASHI KATSUYA , NEMOTO YASUE , TOBISHIMA SHINICHI , YAMAKI JUNICHI
IPC分类号： C07D307/33 , H01M10/05 , H01M10/052 , H01M10/0569 , H01M10/40
摘要： PROBLEM TO BE SOLVED: To provide a secondary battery which is safe and excellent in withstanding property of high voltage and in a charge/discharge characteristic of a negative electrode and respective temperature characteristics by using a γ- butyrolactone derivative with at least one hydrogen substituted with another substitutional group, as a nonaqueous solvent electrolyte. SOLUTION: A γ-butyrolactone derivative, a molecule with at least one hydrogen of γ-butyrolactone expressed by the formula substituted with another substitutional group, is used as a nonaqueous solvent of an electrolyte dissolving ion dissociative alkaline metal salt. Cα in the formula is the carbon in an αposition and Rn (n=1 to 4) represents a substitutional group. In selecting the substitutional group, there is a method of substituting one or two of hydrogen bonding to α position carbon to a carbonyl group with an electron attracting group (R1-and R2-) or a method of substituting one or two of hydrogen bonding to β position carbon with an electron-donating group (R3-and R4-). For example. N R3 (R is an alkyl group), S R2 , N H3 , SO2 Ar (Ar is an aromatic ring) and CO2 H can be used as the electron attracting group.

7. 发明专利

JPH0997609A SECONDARY BATTERY HAVING NONAQUEOUS SOLVENT ELECTROLYTE 失效
公开(公告)号：JPH0997609A
公开(公告)日：1997-04-08
申请号：JP27491795
申请日：1995-09-28
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： HAYASHI KATSUYA , TOBISHIMA SHINICHI , YAMAKI JUNICHI
IPC分类号： H01M10/05 , H01M4/131 , H01M4/134 , H01M4/505 , H01M4/525 , H01M10/0568 , H01M10/0569 , H01M4/58 , H01M10/40
摘要： PROBLEM TO BE SOLVED: To provide a lithium secondary battery with high energy density, capable of performing large current discharge and quick charge, with long charge/discharge life, and low price by using a nonaqueous solvent electrolyte with high conductivity, good temperature characteristics, good load characteristics, and high oxidation/reduction resistance, and performing the optimum combination with a positive electrode and a negative electrode. SOLUTION: In a secondary battery having a negative electrode 2 capable of charging/discharging a lithium ion, a positive electrode 6 capable of reversely performing electrochemical reaction with a lithium ion, and an electrolyte prepared by dissolving an ion dissociative lithium salt in a nonaqueous solvent, as the nonaqueous solvent of the electrolyte, a mixed solvent containing dimethyl carbonate, ethylene carbonate, and methyl propionate is used. The conductivity of the electrolyte is remarkably increased, temperature characteristics and load characteristics are made good, and oxidation/reduction resistance is increased. The secondary battery with high energy density, capable of performing large current discharge and quick charge, with long charge/discharge life, and having the low price nonaqueous solvent electrolyte is obtained.

8. 发明专利

JPH0955202A NONAQUEOUS ELECTROLYTIC BATTERY 失效
公开(公告)号：JPH0955202A
公开(公告)日：1997-02-25
申请号：JP22744095
申请日：1995-08-11
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： ARAI SO , OKADA SHIGETO , SAKURAI YOJI , YAMAKI JUNICHI
IPC分类号： H01M4/02 , H01M4/58 , H01M10/05 , H01M10/40
摘要： PROBLEM TO BE SOLVED: To heighten discharge voltage by using an alkali metal-containing metal halide as a positive active material, an alkali metal or a material capable of absorbing/releasing an alkali metal as a negative active material, and a specified material as an electrolyte material. SOLUTION: A halide containing an alkali metal and at least one metal selected from Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, Sn, Sb, Te, Hf, Ta, W, Pb, Bi, binder powder, and conductive material powder are mixed, the mixture is pressed against a supporting body to obtain a positive electrode 6. A negative electrode 4 comprising a negative active material comprising an alkali metal or a material capable of absorbing/releasing an alkali metal is arranged on a sealing plate 1, and the sealing plate 1 is inserted into the recess of a gasket 2, then a microporous separator 5 and the positive electrode 6 are stacked on the negative electrode 4, and an electrolyte material comprising a material which moves to make the positive active material and the negative active material undergo electrochemical reaction is impregnated, then a positive case 3 is fit and caulked for sealing.

9. 发明专利

JPH08287914A LITHIUM BATTERY 失效
公开(公告)号：JPH08287914A
公开(公告)日：1996-11-01
申请号：JP11531595
申请日：1995-04-18
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： ARAI SO , SAKURAI YOJI , OTSUKA HIDEAKI , OKADA SHIGETO , YAMAKI JUNICHI
IPC分类号： H01M10/05 , H01M4/525 , H01M4/58 , H01M10/40
摘要： PURPOSE: To provide an inexpensive lithium battery having large discharging energy. CONSTITUTION: A compound given by a composition formula LiFe1-x MxO2 (M represents one or more kinds of elements selected from a first transition system element, a second transition system element, a III group element, an IVB group element and a VB group element, and 0

10. 发明专利

JPH08250121A MANUFACTURE OF POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM BATTERY 失效
公开(公告)号：JPH08250121A
公开(公告)日：1996-09-27
申请号：JP8068395
申请日：1995-03-13
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： ARAI SO , OKADA SHIGETO , SAKURAI YOJI , YAMAKI JUNICHI
IPC分类号： H01M10/05 , C01B31/02 , H01M4/525 , H01M4/58 , H01M10/40
摘要： PURPOSE: To provide the manufacturing method for a lithium battery having large discharge capacity, by inhibiting nitrate, unfavorable from the viewpoint of environmental pollution, from being used as starting material, and without performing heat- treatment in an oxygen atmosphere, disadvantageous economically. CONSTITUTION: In the manufacturing method of the lithium battery positive electrode active material of double oxide given by the composition formulas of LiXNi1- YMYO2 (X

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