公开(公告)号：US20240029955A1

公开(公告)日：2024-01-25

申请号：US18373343

申请日：2023-09-27

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Toru WAKAMATSU ,  Daisuke HAMADA

IPC: H01G4/008 ,  H01G4/30

CPC classification number: H01G4/0085 ,  H01G4/30 ,  H01G4/1227

Abstract: In a multilayer ceramic capacitor including first and second inner electrodes alternately arranged with respect to a stacking direction of a multilayer body, a polarity based on a direction of voltage applied between a first outer electrode and a second outer electrode is determined such that the first inner electrodes function as positive electrodes and the second inner electrodes function as negative electrodes. The first inner electrodes have a first metal composition including Cu and Sn, and the second inner electrodes have a second metal composition including Cu. The second metal composition of the second inner electrodes includes Cu as a main component, and at least one metal element selected from Au, Pt, Ir, Pd, Os, Ag, Rh, and Ru, which have standard electrode potentials higher than that of Cu, as an additive component.

公开(公告)号：US20240021371A1

公开(公告)日：2024-01-18

申请号：US18373347

申请日：2023-09-27

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Toru WAKAMATSU ,  Daisuke HAMADA

IPC: H01G4/008 ,  H01G4/30

CPC classification number: H01G4/0085 ,  H01G4/30 ,  H01G4/1227

Abstract: In a multilayer ceramic capacitor including first and second inner electrodes alternately arranged with respect to a stacking direction of a multilayer body, a polarity based on a direction of voltage applied between a first outer electrode and a second outer electrode is determined such that the first inner electrodes function as positive electrodes and the second inner electrodes function as negative electrodes. The first inner electrodes have a first metal composition including Ni as a main component, and the second inner electrodes have a second metal composition including Cu as a main component. The first metal composition may include Sn as an additive component. The second metal composition may include at least one metal element selected from Au, Pt, Ir, Pd, Os, Ag, Rh, and Ru as an additive component.

公开(公告)号：US20240021369A1

公开(公告)日：2024-01-18

申请号：US18373341

申请日：2023-09-27

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Toru WAKAMATSU ,  Daisuke HAMADA

IPC: H01G4/008 ,  H01G4/30 ,  H01G4/232

CPC classification number: H01G4/0085 ,  H01G4/30 ,  H01G4/2325 ,  H01G4/1227

Abstract: In a multilayer ceramic capacitor including first and second inner electrodes alternately arranged with respect to a stacking direction of a multilayer body, a polarity based on a direction of voltage applied between a first outer electrode and a second outer electrode is determined such that the first inner electrodes function as positive electrodes and the second inner electrodes function as negative electrodes. The first inner electrodes have a first metal composition including Cu as a main component, and the second inner electrodes have a second metal composition including Cu as a main component, and at least one metal element selected from Au, Pt, Ir, Pd, Os, Ag, Rh, and Ru, which have standard electrode potentials higher than that of Cu, as an additive component.

公开(公告)号：US20240296995A1

公开(公告)日：2024-09-05

申请号：US18661768

申请日：2024-05-13

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Toru WAKAMATSU

IPC: H01G4/008 ,  H01G4/012 ,  H01G4/30

CPC classification number: H01G4/0085 ,  H01G4/012 ,  H01G4/30

Abstract: A multilayer ceramic capacitor includes dielectric layers made of a ceramic material and inner electrode layers that are laminated. Each of the inner electrode layers includes a first metal as a main component, and dielectric coupling portions penetrating through in a lamination direction, filled with a portion of adjacent dielectric layers, and coupling the adjacent dielectric layers to each other. A solid-dissolved layer, in which a second metal different from the first metal is solid-dissolved, is provided at an interface between the dielectric coupling portions and the inner electrode layers. A content of the second metal in the solid-dissolved layer is about 0.1 mol % or more and about 10 mol % or less in 100 mol of the first metal.

公开(公告)号：US20240021370A1

公开(公告)日：2024-01-18

申请号：US18373345

申请日：2023-09-27

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Toru WAKAMATSU ,  Daisuke HAMADA

IPC: H01G4/008 ,  H01G4/30

CPC classification number: H01G4/0085 ,  H01G4/30 ,  H01G4/2325

Abstract: In a multilayer ceramic capacitor including first and second inner electrodes alternately arranged with respect to a stacking direction of a multilayer body, a polarity based on a direction of voltage applied between a first outer electrode and a second outer electrode is determined such that the first inner electrodes function as positive electrodes and the second inner electrodes function as negative electrodes. The first inner electrodes have a first metal composition including Ni and Sn, and the second inner electrodes have a second metal composition including Ni. The second metal composition of the second inner electrodes may consist of Ni, or may include Ni as a main component and at least one metal element selected from Au, Pt, Ir, Pd, Os, Ag, Rh, Ru, and Cu, which have standard electrode potentials higher than that of Ni.

公开(公告)号：US20240021368A1

公开(公告)日：2024-01-18

申请号：US18373349

申请日：2023-09-27

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Toru WAKAMATSU ,  Daisuke HAMADA

IPC: H01G4/008 ,  H01G4/30 ,  H01G4/012 ,  H01G4/12 ,  H01G4/232

CPC classification number: H01G4/008 ,  H01G4/30 ,  H01G4/012 ,  H01G4/1227 ,  H01G4/232

Abstract: In a multilayer ceramic capacitor including first and second inner electrodes alternately arranged with respect to a stacking direction of a multilayer body, a polarity based on a direction of voltage applied between a first outer electrode and a second outer electrode is determined such that the first inner electrodes function as positive electrodes and the second inner electrodes function as negative electrodes. The first inner electrodes have a first metal composition including Ni or Cu as a main component, and the second inner electrodes have a second metal composition including at least one metal element selected from Au, Pt, Ir, Pd, Os, Ag, Rh, and Ru, which have standard electrode potentials higher than that of Cu, as a main component.

公开(公告)号：US20240021367A1

公开(公告)日：2024-01-18

申请号：US18373342

申请日：2023-09-27

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Toru WAKAMATSU ,  Daisuke HAMADA

IPC: H01G4/008 ,  H01G4/30 ,  H01G4/12

CPC classification number: H01G4/008 ,  H01G4/30 ,  H01G4/1218 ,  H01G4/1236

Abstract: In a multilayer ceramic capacitor including first and second inner electrodes alternately arranged with respect to a stacking direction of a multilayer body, a polarity based on a direction of voltage applied between a first outer electrode and a second outer electrode is determined such that the first inner electrodes function as positive electrodes and the second inner electrodes function as negative electrodes. The first inner electrodes have a first metal composition including Ni as a main component, and the second inner electrodes have a second metal composition including Ni as a main component, and at least one metal element selected from Au, Pt, Ir, Pd, Os, Ag, Rh, Ru, and Cu, which have standard electrode potentials higher than that of Ni, as an additive component.