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公开(公告)号：JP2005302492A
公开(公告)日：2005-10-27
申请号：JP2004115896
申请日：2004-04-09
Inventor： UGAWA SHINSAKU , YAMAMOTO YOSHIKATSU
IPC: G02B6/44 , H01M10/05 , H01M10/0567 , H01M10/40
CPC classification number: Y02E60/122
Abstract: PROBLEM TO BE SOLVED: To provide a battery for improving cycle characteristics, and to provide an electrolyte using the battery.
SOLUTION: An electrode WINDER 20 in which a positive electrode 21 and a negative electrode 22 are laminated and wound via a separator is provided inside a battery can. An electrolyte is impregnated to the separator. The electrolyte contains at least one of ethyleneoxide and its dielectric, thus forming a covering having ion conductivity on the surface of the negative electrode 22, restraining an increase in internal resistance, and suppressing the decomposition reaction of a solvent.
COPYRIGHT: (C)2006,JPO&NCIPIAbstract translation: 要解决的问题：提供一种用于改善循环特性的电池，并提供使用该电池的电解质。 解决方案：在电池壳内设置有通过隔膜将正电极21和负极22层叠并卷绕的电极WINDER 20。 电解液被浸渍到分离器中。 电解质含有环氧乙烷及其电介质中的至少一种，从而在负极22的表面形成具有离子传导性的覆盖物，抑制内阻增加，抑制溶剂的分解反应。 版权所有（C）2006，JPO＆NCIPI
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公开(公告)号：JP2003346800A
公开(公告)日：2003-12-05
申请号：JP2002151182
申请日：2002-05-24
Inventor： HATAKE SHINJI , YAMAMOTO YOSHIKATSU , SAITO TAKAMI
CPC classification number: Y02E60/122
Abstract: PROBLEM TO BE SOLVED: To suppress deterioration of capacity after preservation at high temperatures even if a spinel type lithium-manganese compound oxide is used as a positive electrode active material.
SOLUTION: The non-aqueous electrolyte secondary battery comprises a positive electrode 2, a negative electrode 3, and a non-aqueous electrolyte, and the positive electrode contains two or more kinds of spinel-type lithium- manganese compound oxide having different composition. It is desirable that the above two or more kinds of spinel-type lithium-manganese compound oxide having different composition show different average discharge potential. It is desirable that the difference in the average discharge potential at the depth of discharge 50%-90% is 6 mV or more. Since two or more kinds of spinel-type lithium-manganese compound oxide having different composition are used by mixing, deterioration in capacity after preservation at high temperatures at the depth of discharge 50%-90% which is the characteristic of the spinel-type lithium-manganese compound oxide is suppressed by the mutual action of these.
COPYRIGHT: (C)2004,JPOAbstract translation: 待解决的问题：即使使用尖晶石型锂锰复合氧化物作为正极活性物质，也可以抑制高温保存后的容量的劣化。 解决方案：非水电解质二次电池包括正极2，负极3和非水电解质，正极含有两种或更多种具有不同的尖晶石型锂锰复合氧化物 组成。 理想的是，上述两种以上具有不同组成的尖晶石型锂锰复合氧化物的平均放电电位不同。 期望放电深度50％-90％的平均放电电位差为6mV以上。 由于通过混合使用两种以上的具有不同组成的尖晶石型锂锰复合氧化物，因此在尖晶石型锂的特性的放电深度为50％〜90％的高温保存后的容量的劣化 锰复合氧化物被这些相互作用所抑制。 版权所有（C）2004，JPO
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公开(公告)号：JP2003173776A
公开(公告)日：2003-06-20
申请号：JP2001373266
申请日：2001-12-06
Applicant: SONY CORP
Inventor： HOSOYA YOSUKE , YAMAMOTO YOSHIKATSU
IPC: C01G53/00 , H01M4/02 , H01M4/131 , H01M4/36 , H01M4/505 , H01M4/525 , H01M6/10 , H01M10/05 , H01M10/0525 , H01M10/0587 , H01M10/38 , H01M4/58 , H01M10/40
Abstract: PROBLEM TO BE SOLVED: To provide a positive electrode active material and a secondary battery having a large capacity and good cycle characteristics with which enough discharging capacity can be obtained even at large-current discharging. SOLUTION: A positive electrode 21 and a negative electrode 23 are wound round with a separator 23 interposed. The positive electrode 21 contains a high-stability complex oxide Li x Ni 1-y-z Mn y MI z O 2 and high-conductivity complex oxide Li s MII 1-t-u Mn t MIII u O 2 . MI, MIII denotes at least one kind of elements from group II to group XIV, MII denotes at least one kind from Ni and Co, satisfying the following formulae: 0.9≤x COPYRIGHT: (C)2003,JPO
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公开(公告)号：JP2003092109A
公开(公告)日：2003-03-28
申请号：JP2002211491
申请日：2002-07-19
Applicant: SONY CORP
Inventor： ENDO TAKUYA , NISHI MIO , OZAWA KAZUNORI , MIURA YASUO , SEKAI KOJI , KATO NAOYUKI , YAMAMOTO YOSHIKATSU , SATO SUSUMU
IPC: H01M10/05 , H01M4/525 , H01M10/0525 , H01M10/0566 , H01M4/58 , H01M4/02 , H01M10/40
Abstract: PROBLEM TO BE SOLVED: To reduce the self discharge rate by increasing the particle size of a positive active material in a nonaqueous electrolyte secondary battery. SOLUTION: In the nonaqueous electrolyte secondary battery having a positive electrode using an inorganic compound as a positive active material, a negative electrode, and a nonaqueous electrolyte, as the positive active material, a material prepared by baking granular granulated material of a row material powder comprising an inorganic compound is used. As the negative electrode, the use of a carbon material capable of doping and undoping lithium is preferable. A binder is mixed to the row material powder, and the preparation of the granular granulated material from this mixture is preferable.
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公开(公告)号：JP2002298927A
公开(公告)日：2002-10-11
申请号：JP2001100642
申请日：2001-03-30
Applicant: SONY CORP
Inventor： SAITO TAKAMI , YAMAMOTO YOSHIKATSU
IPC: H01M10/05 , H01M4/505 , H01M4/525 , H01M10/052 , H01M10/058 , H01M10/40 , H01M4/02 , H01M4/58
Abstract: PROBLEM TO BE SOLVED: To suppress capacity degradation following a charging-discharging cycle. SOLUTION: This nonaqueous electrolyte battery is provided with a positive electrode containing a positive electrode active material including a spinel lithium manganese double oxide; a negative electrode containing a negative electrode active material that can dope lithium and release lithium from dope; and a nonaqueous electrolyte interposed between the positive electrode and negative electrode. When the first charging capacity per gram of the positive electrode active material is set to Cc [mAh/g], the weight of the positive electrode active material is set to Cw [g], the first charging capacity per gram of the negative electrode active material is set to Ac [mAh/g] and the weight of the negative electrode active material is set to Aw [g], the value of X[%] expressed by an equation 1 is in a range of 20
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Patent Agency Ranking
公开(公告)号：JP2002298845A
公开(公告)日：2002-10-11
申请号：JP2001100641
申请日：2001-03-30
Applicant: SONY CORP
Inventor： SAITO TAKAMI , YAMAMOTO YOSHIKATSU , HATAKE SHINJI
Abstract: PROBLEM TO BE SOLVED: To maintain a proper positive electrode property, even after discharging and charging or storage under a high-temperature condition. SOLUTION: In a nonaqueous electrolyte battery 1 provided with a positive electrode 2, including positive electrode active material, a negative electrode 3 including negative electrode active material, and electrolyte filled between the positive electrode 2 and the negative electrode 3, the positive electrode active material is composed of a spinel-type lithium manganese compound oxide, having a part of manganese Mn is substituted by transition element, such as chromium.
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公开(公告)号：JP2002203600A
公开(公告)日：2002-07-19
申请号：JP2000403457
申请日：2000-12-28
Applicant: SONY CORP
Inventor： SAITO TAKAMI , YAMAMOTO YOSHIKATSU
IPC: H01M10/05 , C01B31/02 , H01M4/02 , H01M4/36 , H01M4/505 , H01M4/525 , H01M10/052 , H01M10/0525 , H01M10/0566 , H01M10/0568 , H01M10/40 , H01M4/58
Abstract: PROBLEM TO BE SOLVED: To provide a non-aqueous electrolytic solution secondary battery excellent in high temperature storage characteristic and electricity charging discharging cycle characteristic. SOLUTION: The battery has a positive electrode containing an oxide containing manganese and an oxide containing nickel, a negative electrode containing at least one or more kinds among the materials which dope/de-dope of lithium metal, lithium alloy, or lithium is possible as the negative electrode material, and the non-aqueous electrolytic solution that is made by dissolving an electrolyte in a non-aqueous solvent. The above non-aqueous electrolytic solution contains a free acid content, which is contained in the non-aqueous electrolytic solution concerned, of 100 ppm or less.
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公开(公告)号：JP2002203557A
公开(公告)日：2002-07-19
申请号：JP2000403462
申请日：2000-12-28
Applicant: SONY CORP
Inventor： MACHIDA MASANORI , YAMAMOTO YOSHIKATSU
IPC: H01M10/05 , H01M4/13 , H01M4/134 , H01M4/36 , H01M4/505 , H01M4/525 , H01M10/052 , H01M10/0587 , H01M4/58 , H01M4/02 , H01M10/40
Abstract: PROBLEM TO BE SOLVED: To maintain stability of a battery while having high energy density. SOLUTION: As a positive-electrode active material, a mixed material, in which a lithium manganese compound oxide and a lithium nickel compound oxide are mixed so that a mass ratio may become the lithium manganese compound oxide of 10 wt.% to 80 wt.% to the lithium nickel compound oxide of 90 wt.% to 20 wt.%, is used. A collector exposed part 10a which a negative electrode collector 10 exposes is prepared, without forming negative-electrode mixture layer 11 in one side of the negative-electrode material 3 of the outermost circumference of the battery element 5.
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公开(公告)号：JP2002203556A
公开(公告)日：2002-07-19
申请号：JP2000403460
申请日：2000-12-28
Applicant: SONY CORP
Inventor： HOSOYA YOSUKE , YAMAMOTO YOSHIKATSU
Abstract: PROBLEM TO BE SOLVED: To raise cycle characteristic of a secondary battery. SOLUTION: As a positive-electrode active material, a mixed material, in which a lithium manganese compound oxide and a lithium nickel compound oxide are mixed so that a mass ratio may be the lithium manganese compound oxide of 10 wt.% to 80 wt.% and the lithium nickel compound oxide of 90 wt.% to 20 wt.%, is used. Volume density of a positive electrode mixture layer 8 is 2.5 g/cm3 to 3.3 g/cm3.
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公开(公告)号：JP2002203555A
公开(公告)日：2002-07-19
申请号：JP2000403459
申请日：2000-12-28
Applicant: SONY CORP
Inventor： YAMAMOTO YOSHIKATSU
IPC: H01M10/05 , H01M4/02 , H01M4/36 , H01M4/505 , H01M4/525 , H01M10/052 , H01M10/058 , H01M10/0587 , H01M4/58 , H01M10/40
Abstract: PROBLEM TO BE SOLVED: To provide a battery which has high capacity while having high reliability in repeating electricity recharging/discharging for a long period of time. SOLUTION: As a positive-electrode active material, a mixed material, in which a lithium manganese compound oxide and a lithium nickel compound oxide are mixed so that a mass ratio may become the lithium manganese compound oxide of 10 wt.% to 80 wt.% and the lithium nickel compound oxide of 90 wt.% to 20 wt.%, is used. A gap volume in the battery-can 6 is set to 0.15 cm3 to 2.0 cm3 per 1 Ah.
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