-
公开(公告)号：US20170018797A1
公开(公告)日：2017-01-19
申请号：US15053384
申请日：2016-02-25
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Yasuaki MURASHI , Hikaru YOSHIKAWA , Hidesato SARUWATARI , Hiromichi KURIYAMA , Dai YAMAMOTO , Naoki NISHIO , Koichi KAWAMURA
IPC: H01M10/0525 , H01M10/0562 , H01M10/0583 , H01M4/505 , H01M4/48 , H01M4/485 , H01M4/50 , H01M10/02 , H01M4/131
CPC classification number: H01M10/0525 , H01M2/0285 , H01M4/364 , H01M4/485 , H01M4/505 , H01M4/525 , H01M10/44 , Y02T10/7011
Abstract: According to one embodiment, a nonaqueous electrolyte battery includes a negative electrode, a positive electrode, and a nonaqueous electrolyte. When the nonaqueous electrolyte battery is discharged at a constant current of 0.5 C until a voltage becomes 1.5 V, a curve obtained by taking dQ/dV during the discharge as a vertical axis and voltage as a horizontal axis has a first peak and a second peak. The firs peak is a peak that appears within a range of from 2.54 V to 2.65 V, and the second peak is a peak that appears within a range of from 2.4 V to less than 2.54 V. A dQ/dV peak intensity A of the first peak and a dQ/dV peak intensity B of the second peak satisfy 0.8≦A/B 1.0.
Abstract translation: 根据一个实施方式，非水电解质电池包括负极，正极和非水电解质。 当非水电解质电池以0.5C的恒定电流放电直到电压变为1.5V时，在放电期间以dQ / dV作为垂直轴并且作为水平轴的电压获得的曲线具有第一峰和第二峰 。 第一峰是出现在2.54V至2.65V的范围内的峰，第二峰是出现在2.4V至小于2.54V的范围内的峰.DQ / dV峰强度A 第二峰的第一峰和dQ / dV峰强度B满足0.8≤A/ B 1.0。
-
公开(公告)号：US20160261004A1
公开(公告)日：2016-09-08
申请号：US14483354
申请日：2014-09-11
Applicant: Kabushiki Kaisha Toshiba
Inventor： Dai YAMAMOTO , Hidesato Saruwatari , Masanori Tanaka , Kazuya Kuriyama , Hideki Satake , Hirotaka Hayashida
IPC: H01M10/0569 , H01M10/0568 , H01M4/131 , H01M2/02 , H01M4/62 , H01M4/66 , H01M10/0587 , H01M2/16 , H01M10/0525 , H01M4/485
CPC classification number: H01M10/0569 , H01M2/0207 , H01M2/024 , H01M2/026 , H01M2/0262 , H01M2/0287 , H01M2/1626 , H01M2/1653 , H01M2/18 , H01M4/0404 , H01M4/043 , H01M4/131 , H01M4/1391 , H01M4/485 , H01M4/623 , H01M4/625 , H01M4/661 , H01M10/0525 , H01M10/0568 , H01M10/0587 , H01M2004/027 , H01M2004/028 , H01M2300/0037
Abstract: A non-aqueous electrolyte secondary battery of an embodiment includes an exterior member, a negative electrode containing a titanium-containing oxide housed in the exterior member, a positive electrode housed in the exterior member, a separator housed in the exterior member and arranged between the positive electrode and the negative electrode, and a non-aqueous electrolyte solution housed in the exterior member. At least one type or more chain carbonates are contained in a solvent of the non-aqueous electrolyte solution. A self-diffusion coefficient of the chain carbonate in −20° C. is front 1.4×10−10 to 2.0×10−10 m/sec.
Abstract translation: 实施方式的非水电解质二次电池包括外部构件，容纳在外部构件中的含有含钛氧化物的负极，容纳在外部构件中的正极，容纳在外部构件中的隔板， 正极和负极，以及容纳在外部构件中的非水电解液。 在非水电解质溶液的溶剂中含有至少一种以上的链状碳酸酯。 -20℃下链状碳酸酯的自扩散系数为1.4×10-10至2.0×10-10 m / sec。
-
公开(公告)号：US20200052283A1
公开(公告)日：2020-02-13
申请号：US16655771
申请日：2019-10-17
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Shinsuke MATSUNO , Hidesato SARUWATARI , Dai YAMAMOTO , Asato KONDO , Hiromichi KURIYAMA , Hideki SATAKE , Takashi KUBOKI
IPC: H01M4/133 , H01M4/131 , H01M4/1391 , H01M4/485 , H01M4/62
Abstract: According to one embodiment, there is provided a non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode including a negative electrode active material layer, and a non-aqueous electrolyte. The negative electrode active material layer contains carbon dioxide and releases the carbon dioxide in the range of 0.1 ml to 5 ml per 1 g when heated at 200° C. for 1 minute.
-
公开(公告)号：US20190173121A1
公开(公告)日：2019-06-06
申请号：US16257103
申请日：2019-01-25
Inventor： Dai YAMAMOTO , Keigo HOSHINA , Ryo HARA , Norio TAKAMI , Yasuhiro HARADA
Abstract: According to one embodiment, provided is a nonaqueous electrolyte battery including a positive electrode, a negative electrode, and a nonaqueous electrolyte. The negative electrode contains a negative electrode active material containing orthorhombic Na-containing niobium-titanium composite oxide particles represented by general formula (1) Li2+vNa2−yM1xTi6−y−zNbyM2zO14+δ. In general formula (1), M1 is one or two or more elements selected from the group consisting of Cs, K, Sr, Ba, and Ca, M2 is one or two or more elements selected from the group consisting of Zr, Al, Sn, V, Ta, Mo, W, Fe, Co, and Mn, 0≤v
-
公开(公告)号：US20170271671A1
公开(公告)日：2017-09-21
申请号：US15454454
申请日：2017-03-09
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Dai YAMAMOTO , Yuki WATANABE , Tetsuro KANO , Nobuyasu NEGISHI , Hidesato SARUWATARI
IPC: H01M4/525 , H01M10/0569 , H01M10/06 , H01M10/0525 , H01M4/505 , H01M4/485
Abstract: According to one embodiment, there is provided a nonaqueous electrolyte battery including a positive electrode, a negative electrode and a nonaqueous electrolyte. The positive electrode includes a positive electrode active material layer including a lithium nickel cobalt manganese composite oxide. The negative electrode includes a negative electrode active material layer including a spinel type lithium titanate. The nonaqueous electrolyte has an ion conductivity of not less than 7 mS/cm and not more than 10 mS/cm at 25° C. A capacity ratio p/n is within a range of not less than 1.4 and not more than 1.8. A thickness ratio Tp/Tn is within a range of not less than 1.05 and less than 1.3. A ratio Pp/Pn is within a range of not less than 0.55 and less than 0.8.
-
Patent Agency Ranking
公开(公告)号：US20160204417A1
公开(公告)日：2016-07-14
申请号：US15051854
申请日：2016-02-24
Applicant: Kabushiki Kaisha Toshiba
Inventor： Dai YAMAMOTO , Hikaru Yoshikawa , Hiromichi Kuriyama , Yasuaki Murashi , Hidesato Saruwatari
IPC: H01M4/131 , H01M10/0585 , H01M10/0525 , H01M10/06 , H01M4/505 , H01M4/485
CPC classification number: H01M4/131 , H01M4/485 , H01M4/505 , H01M10/0525 , H01M10/0585 , H01M10/06 , H01M2004/021 , Y02T10/7011 , Y02T10/7016
Abstract: According to one embodiment, a nonaqueous electrolyte battery is provided. The nonaqueous electrolyte battery includes a positive electrode and a negative electrode. A positive electrode layer contains lithium-manganese composite oxide represented by a general formula of LiMn2-xMxO4. x is within the range of 0.22≦x≦0.7 and M is at least one element selected from a group consisting of Mg, Ti, Cr, Fe, Co, Zn, Al, and Ga. A negative electrode layer contains lithium titanate. A pore specific surface area of the positive electrode layer is 2 m2/g or more and less than 5 m2/g. A ratio of a capacity per pore surface area of the positive electrode to the negative electrode is within the range of 1 or more and less than 2.4.
Abstract translation: 根据一个实施例，提供非水电解质电池。 非水电解质电池包括正极和负极。 正极层含有由通式LiMn 2-x M x O 4表示的锂锰复合氧化物。 x在0.22≤n1E的范围内; x和nlE; 0.7，M是选自Mg，Ti，Cr，Fe，Co，Zn，Al和Ga中的至少一种元素。负极层含有钛酸锂。 正极层的孔比表面积为2m 2 / g以上且小于5m 2 / g。 正极与负极的每孔表面积的容量比在1以上且小于2.4的范围内。
-
公开(公告)号：US20140272551A1
公开(公告)日：2014-09-18
申请号：US14197443
申请日：2014-03-05
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Hidesato SARUWATARI , Masanori TANAKA , Dai YAMAMOTO , Kazuya KURIYAMA
IPC: H01M4/131
CPC classification number: H01M4/131 , H01M4/485 , H01M4/505 , H01M4/525 , H01M10/049 , H01M10/0525 , H01M10/0568 , H01M10/058 , H01M10/446 , H01M2004/021 , H01M2300/0037
Abstract: In general, according to one embodiment, there is provided a nonaqueous electrolyte battery. The nonaqueous electrolyte battery includes a positive electrode containing a lithium nickel cobalt manganese composite oxide, and a negative electrode containing a spinel-type lithium titanium composite oxide, and a nonaqueous electrolyte. The nonaqueous electrolyte battery satisfies the formula (1) (0.92Cβ
Abstract translation: 通常，根据一个实施方案，提供非水电解质电池。 非水电解质电池包括含有锂镍钴锰复合氧化物的正极和含有尖晶石型锂钛复合氧化物的负极和非水电解质。 非水电解质电池满足式（1）（0.92C＆bgr;
-
公开(公告)号：US20200212441A1
公开(公告)日：2020-07-02
申请号：US16812431
申请日：2020-03-09
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Ryo HARA , Dai YAMAMOTO , Keigo HOSHINA
Abstract: According to one embodiment, provided is a nonaqueous electrolyte battery including a positive electrode, a negative electrode, and a nonaqueous electrolyte. The positive electrode includes lithium manganese composite oxide particles having a spinel crystal structure and lithium cobalt composite oxide particles. The negative electrode includes a titanium-containing oxide. The nonaqueous electrolyte contains a propionate ester. The battery satisfies 0.8≤p/n≤1.2 and 1≤w/s≤60. p denotes a capacity per unit area of the positive electrode. n denotes a capacity per unit area of the negative electrode. w denotes a content of the propionate ester in the nonaqueous electrolyte and is in a range of 10% by weight to 60% by weight. s denotes an average particle size of the lithium manganese composite oxide particles.
-
公开(公告)号：US20190334148A1
公开(公告)日：2019-10-31
申请号：US16451837
申请日：2019-06-25
Inventor： Aki HASEGAWA , Dai YAMAMOTO , Masataka SHIKOTA , Toshitada NAKAZAWA
IPC: H01M2/16 , H01M10/052 , H01M4/505
Abstract: According to one embodiment, provided is a nonaqueous electrolyte battery that includes a positive electrode, a negative electrode, a separator, and a nonaqueous electrolyte. The separator is disposed between the positive electrode and the negative electrode. The separator includes a fiber-made nonwoven fabric having a tortuosity of 1.8 to 3 and a vacancy of 40% to 60%. The negative electrode has an operating potential of 0.7 V or more with respect to the potential of metallic lithium.
-
公开(公告)号：US20190245173A1
公开(公告)日：2019-08-08
申请号：US16387592
申请日：2019-04-18
Inventor： Kazuhiro NAMBA , Dai YAMAMOTO , Akira YAJIMA
CPC classification number: H01M2/12 , H01M2/02 , H01M2/30 , H01M4/13 , H01M4/131 , H01M4/364 , H01M4/366 , H01M4/48 , H01M4/485 , H01M4/505 , H01M4/62 , H01M10/052 , H01M10/0569 , H01M2004/021 , H01M2004/027 , Y02E60/122
Abstract: According to one embodiment, a nonaqueous electrolyte secondary battery is provided. The nonaqueous electrolyte secondary battery includes a container member, a negative electrode, a positive electrode, and a nonaqueous electrolyte. The container member is provided with a gas relief structure. The negative electrode includes a negative electrode mixture layer. The negative electrode mixture layer contains a titanium-containing oxide and Mn. Abundance ratios RTi, RMn, RA and RB obtained according to an X-ray photoelectron spectroscopy spectrum of the negative electrode mixture layer satisfy the following relational expressions: 0.01≤RMn/RTi≤0.2 (1); 3≤RA/RMn≤50 (2); and 0.5≤RA/RB≤5 (3).
-
-
-
-
-
-
-
-
-
Search Results
22
records
(took 0.018 seconds)
