公开(公告)号：US20230378443A1

公开(公告)日：2023-11-23

申请号：US18230041

申请日：2023-08-03

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Takuya NAKASHIMA ,  Takeshi HAYASHI ,  Hironobu KUBOTA

IPC: H01M4/36 ,  H01M4/62 ,  H01M4/525 ,  H01M4/131

CPC classification number: H01M4/366 ,  H01M4/625 ,  H01M4/525 ,  H01M4/131 ,  H01M2004/028

Abstract: Provided is a secondary battery including an electrode including an electrode active material and another electrode-constituting material other than the electrode active material. In the secondary battery, at least a part of the electrode active material is covered with a covering material, and at least a part of the another electrode-constituting material is also covered with the covering material.

公开(公告)号：US20240413344A1

公开(公告)日：2024-12-12

申请号：US18812072

申请日：2024-08-22

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Hironobu KUBOTA ,  Takeshi HAYASHI ,  Kazuki FUKUI ,  Takashi KASASHIMA ,  Takuya NAKASHIMA

IPC: H01M4/62 ,  C07F7/18 ,  C07F7/21 ,  H01M4/02 ,  H01M4/36 ,  H01M10/0525

Abstract: A secondary battery is provided and including an electrode containing an electrode active material and a conductive material, in which at least a part of the conductive material is covered with a covering material, and a covering amount of the covering material is 0.0008 mmol/m2 or more and 0.06 mmol/m2 or less.

公开(公告)号：US20210159501A1

公开(公告)日：2021-05-27

申请号：US17162983

申请日：2021-01-29

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Yuichiro HASHIZUME ,  Takeshi HAYASHI

IPC: H01M4/58 ,  H01M10/0525 ,  H01M10/0585 ,  H01M50/204 ,  H01M50/249 ,  H01M10/0567 ,  H01M4/62 ,  H01M4/587

Abstract: A lithium ion secondary battery includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte. The positive electrode includes a positive electrode active material layer including a lithium iron phosphate. The positive electrode active material layer has a pore curvature from 50 to 120 as measured by a mercury porosimeter. The negative electrode includes a negative electrode active material layer including graphite. The negative electrode active material layer has a pore curvature from 5 to 30 as measured by the mercury porosimeter.

公开(公告)号：US20220158186A1

公开(公告)日：2022-05-19

申请号：US17665209

申请日：2022-02-04

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Hironobu KUBOTA ,  Kazuaki ENDOH ,  Takeshi HAYASHI ,  Takashi KASASHIMA

IPC: H01M4/525 ,  H01M4/04 ,  H01M4/36 ,  H01M4/505 ,  H01M4/60

Abstract: The present technology provides a positive electrode active material capable of more sufficiently preventing deterioration in cycle characteristics even when the positive electrode active material has a coating based on a metal alkoxide on its surface. The present technology relates to a positive electrode active material for a battery including a positive electrode active material core material and a coating formed on a surface of the positive electrode active material core material, wherein the coating is an organic-inorganic hybrid coating formed of a reactant including at least a first metal alkoxide containing no metal atom-carbon atom bond in one molecule and a second metal alkoxide containing two or more metal atom-carbon atom bonds in one molecule.