公开(公告)号：US20200083521A1

公开(公告)日：2020-03-12

申请号：US16456506

申请日：2019-06-28

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Daisuke ITO

IPC: H01M4/131 ,  H01M4/134 ,  H01M4/60 ,  H01M4/139 ,  H01M10/0525 ,  H01M10/42 ,  H01M10/625

Abstract: The negative electrode active material is a negative electrode active material containing lithium and has a compound capable of forming a complex with lithium on the surface.

公开(公告)号：US20190181433A1

公开(公告)日：2019-06-13

申请号：US16274841

申请日：2019-02-13

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Daisuke ITO

IPC: H01M4/36 ,  H01M4/131 ,  H01M4/134 ,  H01M4/1391 ,  H01M4/1395 ,  H01M4/04 ,  H01M10/0525

Abstract: A negative-electrode active material is provided. The negative-electrode active material includes a particle including a core and a coat layer provided on at least a part of a surface of the core. The core includes a first nickel silicide-based material and a silicon oxide-based material, and the coat layer includes a second nickel silicate-based material.

公开(公告)号：US20240421352A1

公开(公告)日：2024-12-19

申请号：US18821239

申请日：2024-08-30

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Daisuke ITO

IPC: H01M10/0562

Abstract: A solid-state electrolyte for a solid-state battery, the solid-state electrolyte including: a lithium salt solid-state electrolyte part; and a non-lithium compound part embedded in the lithium salt solid-state electrolyte part. Preferably, the lithium salt solid-state electrolyte part has an antiperovskite structure, and the non-lithium compound part includes an inorganic insulating material.

公开(公告)号：US20230373798A1

公开(公告)日：2023-11-23

申请号：US18228252

申请日：2023-07-31

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Daisuke ITO

IPC: C01B33/32 ,  H01M10/0525

CPC classification number: C01B33/325 ,  H01M10/0525 ,  C01P2006/40 ,  C01P2002/85 ,  C01P2002/82

Abstract: An active material includes lithium, silicon, oxygen, a first element, a second element, and a third element as constituent elements. The first element includes boron, phosphorus, or both. The second element includes at least one of an alkali metal element, a transition element, or a typical element. The alkali metal element excludes lithium. The typical element excludes lithium, silicon, oxygen, boron, phosphorus, the alkali metal element, and an alkaline earth metal element. The third element includes the alkaline earth metal element.

公开(公告)号：US20230370105A1

公开(公告)日：2023-11-16

申请号：US18358170

申请日：2023-07-25

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hiroyuki NAGAMORI ,  Akio KANEDA ,  Hiroshi MURANAKA ,  Hideki TSUKAMOTO ,  Daisuke ITO ,  Kiwamu SAKANO ,  Daisuke MIYAZAKI

IPC: H04B1/18 ,  H03F3/193 ,  H03F3/24 ,  H04B1/52 ,  H04B7/04

CPC classification number: H04B1/18 ,  H03F3/193 ,  H03F3/245 ,  H04B1/52 ,  H04B7/04 ,  H03F2200/165 ,  H03F2200/294

Abstract: A frontend circuit includes a wide-band filter, a transmit filter, and switches. The wide-band filter passes both the receive frequency band of a first communication frequency band and that of a second communication frequency band which is close to or overlaps that of the first communication frequency band. The transmit filter passes the transmit frequency band of the first or second communication frequency band. The switches are capable of simultaneously bringing, into conduction, at least two of multiple filters including the wide-band filter and the transmit filter. In carrier aggregation using the receive frequency bands of the first and second communication frequency bands, the switches simultaneously bring the wide-band filter and the transmit filter into conduction. Thus, in carrier aggregation using signals of multiple communication frequencies simultaneously in communication, attenuation of signals due to signal leakage in two receive frequency bands, which are close to each other, is suppressed.

公开(公告)号：US20220216478A1

公开(公告)日：2022-07-07

申请号：US17704163

申请日：2022-03-25

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Daisuke ITO ,  Yuji KINTAKA ,  Yasutaka SUGIMOTO

IPC: H01M4/58 ,  H01M4/04 ,  H01M10/0525 ,  H01M4/38 ,  H01M4/36 ,  H01M4/583

Abstract: An active material includes, as constituent elements, silicon, oxygen, a first element, a second element, and a third element. The first element includes boron, phosphorus, or both. The second element includes at least one of an alkali metal element, a transition element, or a typical element. The typical element excludes silicon, oxygen, boron, phosphorus, an alkali metal element, and an alkaline earth metal element. The third element includes an alkaline earth metal element. The content of silicon with respect to all the constituent elements excluding oxygen and carbon is 60 at % or greater and 98 at % or less. The content of the first element with respect to all the constituent elements excluding oxygen and carbon is 1 at % or greater and 25 at % or less. The content of the second element with respect to all the constituent elements excluding oxygen and carbon is 1 at % or greater and 34 at % or less. The content of the third element with respect to all the constituent elements excluding oxygen and carbon is 0 at % or greater and 6 at % or less. A first peak is detected in an XPS spectrum of Si2p relating to the active material. The XPS spectrum of Si2p is measured using X-ray photoelectron spectroscopy (XPS). The first peak includes an apex within a range of a binding energy of 102 eV or greater and 105 eV or less, and a shoulder on a smaller binding energy side of the apex. A second peak is detected in a Raman spectrum relating to the active material. The Raman spectrum is measured using Raman spectroscopy. The second peak includes an apex within a range of a Raman shift of 435 cm−1 or greater and 465 cm−1 or less.

公开(公告)号：US20200176760A1

公开(公告)日：2020-06-04

申请号：US16784509

申请日：2020-02-07

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Daisuke ITO ,  Go SUDO

IPC: H01M4/36 ,  H01M4/48

Abstract: A negative electrode active material includes a matrix including at least a first element selected from the group consisting of silicon, tin, and germanium, at least a second element selected from the group consisting of copper, boron, phosphorous, aluminum, gallium, arsenic, antimony, lithium, and sodium, and oxygen. The second element bonds with oxygen; and a cluster includes the first element and is dispersed in the matrix.