公开(公告)号：US20230387417A1

公开(公告)日：2023-11-30

申请号：US18248869

申请日：2021-10-26

Applicant: ZEON CORPORATION

Inventor： Yasuhiro ISSHIKI ,  Shiho MOSAKI

IPC: H01M4/62 ,  H01M50/383 ,  H01M10/42 ,  H01M4/525 ,  C08F236/12 ,  C08F220/48 ,  C08K5/3492 ,  C08K5/098 ,  C08K5/20 ,  C08K5/41

CPC classification number: H01M4/623 ,  H01M50/383 ,  H01M10/4235 ,  H01M4/525 ,  H01M4/625 ,  C08F236/12 ,  C08F220/48 ,  C08K5/34924 ,  C08K5/34922 ,  C08K5/098 ,  C08K5/20 ,  C08K5/41 ,  C08F2810/00

Abstract: Provided is a new technique that can sufficiently inhibit heat generation in the event of an internal short circuit of an electrochemical device while also reducing IV resistance at low temperature and improving high-temperature storage characteristics of the electrochemical device. A binder composition for an electrochemical device contains a binder and a thermally decomposable material. The thermally decomposable material includes a foaming agent. The thermally decomposable material has a thermal decomposition temperature of 150° C. to 400° C., a number-average particle diameter of 0.01 μm to 10 μm, a ratio of the number-average particle diameter relative to volume-average particle diameter of 0.05 to 1, and a circularity of 0.05 to 0.95.

公开(公告)号：US20220238883A1

公开(公告)日：2022-07-28

申请号：US17597048

申请日：2020-06-17

Applicant: ZEON CORPORATION

Inventor： Maki MESUDA ,  Kenya SONOBE ,  Yasuhiro ISSHIKI

IPC: H01M4/62 ,  H01M4/525 ,  H01M10/0525

Abstract: Provided is a novel technique relating to electrochemical devices that makes it possible to ensure a high level of safety of an electrochemical device while also causing the electrochemical device to display excellent high-temperature storage characteristics. One or more composite particles for an electrochemical device each include a core particle and a shell portion at least partially covering an outer surface of the core particle. The core particle contains a melamine compound, and the shell portion contains an inorganic material.

公开(公告)号：US20220200000A1

公开(公告)日：2022-06-23

申请号：US17593563

申请日：2020-03-17

Applicant: ZEON CORPORATION

Inventor： Maki MESUDA ,  Kenya SONOBE ,  Yasuhiro ISSHIKI

IPC: H01M4/62 ,  H01M10/0525 ,  H01M4/04 ,  H01M4/36

Abstract: Provided is a new technique related to electrochemical devices that can sufficiently ensure adhesiveness of a functional layer and safety of an electrochemical device while, on the other hand, causing an electrochemical device to display excellent high-temperature storage characteristics. A composite particle for an electrochemical device functional layer includes a core particle containing a melamine compound and a shell polymer that at least partially covers an outer surface of the core particle and that includes at least one selected from the group consisting of a nitrile group, a carboxy group, a hydroxyl group, a sulfo group, an aldehyde group, and an amide group.

公开(公告)号：US20210057747A1

公开(公告)日：2021-02-25

申请号：US16960317

申请日：2019-01-10

Applicant: ZEON CORPORATION

Inventor： Kenya SONOBE ,  Yasuhiro ISSHIKI

IPC: H01M4/62 ,  H01G11/38 ,  H01M10/0525 ,  H01M4/88

Abstract: Provided is an additive for an electrochemical device that can ensure a high level of safety of an electrochemical device. The additive for an electrochemical device is an additive for an electrochemical device that is used in an electrochemical device, for which a temperature at which a volume expansion ratio thereof reaches a factor of 2 or more is higher than 150° C. and lower than 400° C., and in which the content of (A) each element belonging to group 2 of the periodic table is less than 100 mass ppm, the content of (B) each element belonging to group 17 of the periodic table is less than 100 mass ppm, and the content of (C) each element among Cr, Mn, Fe, Co, Ni, Cu, and Zn is less than 5 mass ppm.

公开(公告)号：US20200176782A1

公开(公告)日：2020-06-04

申请号：US16629564

申请日：2018-07-17

Applicant: ZEON CORPORATION

Inventor： Yasuhiro ISSHIKI ,  Kenya SONOBE

IPC: H01M4/80 ,  H01M4/62 ,  H01M4/66

Abstract: Provided is an electrode for an electrochemical device that has excellent peel strength and can ensure a high level of safety of an electrochemical device. The electrode for an electrochemical device includes a current collector and an electrode mixed material layer on the current collector. The electrode mixed material layer contains an electrode active material, a binder, and a foaming agent. The binder is a polymer including a diene monomer unit and/or nitrile group-containing monomer unit, and in which the total proportion constituted by the diene monomer unit and nitrile group-containing monomer unit is 10 mass % to 80 mass %. Volume resistivity RA of a laminate of the electrode mixed material layer and current collector at 25° C. is 0.1 Ω·cm to 200 Ω·cm, and a ratio of volume resistivity RB of the laminate at 350° C. relative to volume resistivity RA of the laminate at 25° C. is 10 or more.