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    NONAQUEOUS ELECTROLYTE BATTERY AND BATTERY PACK
    1.
    发明申请
    NONAQUEOUS ELECTROLYTE BATTERY AND BATTERY PACK 有权

    公开(公告)号：US20210005863A1

    公开(公告)日：2021-01-07

    申请号：US17024967

    申请日：2020-09-18

    Applicant: KABUSHIKI KAISHA TOSHIBA

    Inventor： Toshitada NAKAZAWA ,  Dai YAMAMOTO ,  Masataka SHIKOTA ,  Aki HASEGAWA

    IPC: H01M2/18 ,  H01M2/16 ,  H01M4/485 ,  H01M10/0525

    Abstract: According to one embodiment, there is provided a nonaqueous electrolyte battery including a positive electrode, a negative electrode, a separator, and a nonaqueous electrolyte. The negative electrode includes a negative electrode material layer including a titanium-containing oxide. A logarithmic differential pore volume distribution curve of the separator obtained by a mercury intrusion method includes a first peak at which a pore diameter is in the range from 0.02 μm to 0.15 μm and second peak at which the pore diameter is in the range from 1.5 μm to 30 μm. A ratio P2I/P1I of a second peak intensity to a first peak intensity is more than 1.00 and not more than 3.00. The pore specific surface area of the separator is 70 m2/g or more.

    NONAQUEOUS ELECTROLYTE BATTERY AND BATTERY PACK
    2.
    发明申请
    NONAQUEOUS ELECTROLYTE BATTERY AND BATTERY PACK 审中-公开
    非电解电池电池和电池组

    公开(公告)号：US20160380257A1

    公开(公告)日：2016-12-29

    申请号：US15261031

    申请日：2016-09-09

    Applicant: Kabushiki Kaisha Toshiba

    Inventor： Hidesato SARUWATARI ,  Masataka SHIKOTA ,  Dai YAMAMOTO

    IPC: H01M4/131 ,  H01M2/16 ,  H01M2/10 ,  H01M2/14 ,  H01M2/34 ,  H01M4/485

    CPC classification number: H01M4/131 ,  H01M2/1077 ,  H01M2/145 ,  H01M2/16 ,  H01M2/1626 ,  H01M2/1673 ,  H01M2/348 ,  H01M4/485 ,  H01M10/0525 ,  H01M10/0587 ,  H01M10/425 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2220/20 ,  Y02T10/7011

    Abstract: According to an embodiment, there is provided a nonaqueous electrolyte battery. The nonaqueous electrolyte battery includes a positive electrode, a negative electrode, a separator sandwiched between the positive electrode and the negative electrode, and a nonaqueous electrolyte. The negative electrode contains a negative electrode active material having a Li-absorbing potential of 1 V vs. Li/Li+ or more. An electrical resistance of the negative electrode in a discharged state is within a range of 100 Ω·cm to 100000 Ω·cm. A pore volume ratio of pores having a pore diameter of 1 μm or more in the separator is more than 70%. The pore volume ratio is determined from a cumulative pore volume frequency curve of the separator obtained by a mercury intrusion porosimetry.

    Abstract translation: 根据一个实施方式，提供一种非水电解质电池。 非水电解质电池包括正极，负极，夹在正极和负极之间的隔板和非水电解质。 负极含有Li比Li / Li +以上的Li吸收电位为1V的负极活性物质。 放电状态的负极的电阻在100Ω·cm〜100000Ω·cm的范围内。 在隔膜中孔径为1μm以上的孔的孔体积比大于70％。 孔体积比由通过水银侵入孔隙率法获得的隔膜的累积孔体积频率曲线确定。

    POSITIVE ELECTRODE AND NONAQUEOUS ELECTROLYTE BATTERY
    4.
    发明申请
    POSITIVE ELECTRODE AND NONAQUEOUS ELECTROLYTE BATTERY 有权
    正极和非电解电池

    公开(公告)号：US20160056450A1

    公开(公告)日：2016-02-25

    申请号：US14645867

    申请日：2015-03-12

    Applicant: KABUSHIKI KAISHA TOSHIBA

    Inventor： Hikaru YOSHIKAWA ,  Hiromichi KURIYAMA ,  Yasuaki MURASHI ,  Hidesato SARUWATARI ,  Dai YAMAMOTO

    IPC: H01M4/131 ,  H01M4/62 ,  H01M10/0525

    CPC classification number: H01M4/131 ,  C01G45/1242 ,  C01G49/0072 ,  C01G51/54 ,  C01P2004/51 ,  C01P2004/61 ,  H01M4/485 ,  H01M4/505 ,  H01M4/625 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028 ,  Y02E60/122 ,  Y02T10/7011

    Abstract: According to one embodiment, there is provided a positive electrode including a positive electrode active material-including layer including a positive electrode active material, which includes a lithium-manganese oxide LiMn2-xMxO4, and a conductive agent. In the positive electrode active material-including layer, an average particle diameter d50 is within 2 μm to 5 μm, a particle diameter d10 and a particle diameter d90, where a cumulative frequency from a smaller side is, respectively, 10% and 90%, is within 0.5 μm to 3 μm and within 4 μm to 10 μm, respectively, in a particle size distribution. X, represented by X=(d50−d10) /d50 is within 0.4 to 0.8. Y, represented by Y=(d90−d50)/d90 is within 0.2 to 0.6.

    Abstract translation: 根据一个实施方案，提供了一种正极，其包括含有锂 - 锰氧化物LiMn 2-x M x O 4的正极活性物质的正极活性物质包含层和导电剂。 在含正极活性物质层中，平均粒径d50为2μm〜5μm，粒径d10和粒径d90，其中较小面的累积频率分别为10％〜90％ 分别在0.5μm〜3μm的范围内且在4μm〜10μm的范围内。 由X =（d50-d10）/ d50表示的X在0.4〜0.8的范围内。 由Y =（d90-d50）/ d90表示的Y在0.2〜0.6的范围内。

    ELECTRODE, ELECTRODE GROUP, BATTERY, AND BATTERY PACK
    7.
    发明申请
    ELECTRODE, ELECTRODE GROUP, BATTERY, AND BATTERY PACK 有权

    公开(公告)号：US20210408540A1

    公开(公告)日：2021-12-30

    申请号：US17474532

    申请日：2021-09-14

    Applicant: KABUSHIKI KAISHA TOSHIBA

    Inventor： Keigo HOSHINA ,  Dai YAMAMOTO ,  Tetsuro KANO ,  Masanori TANAKA ,  Yuki WATANABE ,  Nobuyasu NEGISHI

    IPC: H01M4/525 ,  H01M4/505 ,  H01M4/36

    Abstract: According to one embodiment, an electrode is provided. The electrode includes a current collector and an active material-containing layer formed on the current collector. The active material-containing layer contains a lithium nickel cobalt manganese composite oxide and a lithium cobalt composite oxide. Pore size distribution obtained by mercury intrusion porosimetry for the active material-containing layer has a first peak top indicating a highest intensity I1 within a pore size range of from 0.1 μm to 1 μm and a second peak top indicating an intensity I2 which is a second highest intensity after the highest intensity I1 within the pore size range of from 0.1 μm to 1 μm. A pore size at the first peak top is smaller than a pore size at the second peak top.

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