公开(公告)号：US20200312553A1

公开(公告)日：2020-10-01

申请号：US16823789

申请日：2020-03-19

Applicant: TDK Corporation

Inventor： Shirou OOTSUKI ,  Aiko TAKAHASHI ,  Yasunori HARADA ,  Shota SUZUKI ,  Yasunaga KAGAYA ,  Tomohiko KATO ,  Mirai ISHIDA

IPC: H01G4/10 ,  H01G4/14

Abstract: A dielectric film, contains: (1) Bi and Ti; (2) at least one element E1 selected from the group consisting of Na and K; and (3) at least one element E2 selected from the group consisting of Ba, Sr, and Ca. The dielectric film has a main phase containing an oxide that contains Bi, Ti, the element E1, and the element E2 and has a perovskite structure, and a subphase that contains Bi and has an oxygen concentration lower than that of the main phase. In a sectional surface of the dielectric film, a ratio RS of an area of the subphase to a sum of an area of the main phase and the area of the subphase is greater than or equal to 0.03 and less than or equal to 0.3.

公开(公告)号：US20250167296A1

公开(公告)日：2025-05-22

申请号：US18841595

申请日：2022-09-30

Applicant: TDK CORPORATION

Inventor： Hiroshi SATO ,  Shota SUZUKI ,  Hisaji OYAKE ,  Masayuki MUROI

IPC: H01M10/0562 ,  H01M4/40 ,  H01M10/0525

Abstract: An all-solid-state battery includes a sintered body including a positive electrode, a negative electrode and a solid electrolyte layer between the positive electrode and the negative electrode, in which the solid electrolyte layer contains a first solid electrolyte having a γ-Li3PO4-type crystal structure, and the negative electrode contains a second solid electrolyte having a γ-Li3PO4-type crystal structure and one or more selected from Ag and a Ag-containing alloy.

公开(公告)号：US20250167286A1

公开(公告)日：2025-05-22

申请号：US18841125

申请日：2022-09-30

Applicant: TDK CORPORATION

Inventor： Hiroshi SATO ,  Yuusuke YAMAGUCHI ,  Shota SUZUKI ,  Hisaji OYAKE ,  Masayuki MUROI

IPC: H01M10/0525 ,  H01M4/131 ,  H01M10/0562

Abstract: An all-solid-state battery including a sintered body including a positive electrode, a negative electrode and a solid electrolyte layer between the positive electrode and the negative electrode, in which the positive electrode contains a Ag-containing compound, a Li-containing transition metal oxide and an oxide having a composition different from a composition of the Li-containing transition metal oxide, the oxide contains Ag, and at least a part of the Ag-containing compound and the Li-containing transition metal oxide is present in the positive electrode with the oxide present therebetween.

公开(公告)号：US20220336724A1

公开(公告)日：2022-10-20

申请号：US17639754

申请日：2020-10-05

Applicant: TDK Corporation

Inventor： Youhei NODA ,  Shota SUZUKI

IPC: H01L35/32

Abstract: To increase thermoelectromotive voltage of a thermoelectric conversion element with a magnetization direction, a temperature gradient direction, and an electromotive force direction orthogonal to each other. A thermoelectric conversion element 1 is formed by annularly winding a thermoelectric material which is radially magnetized and circumferentially generates an electromotive force in accordance with a temperature gradient in the axial direction thereof. Thus, the thermoelectric material is wound not linearly but annularly, so that a connection line for connecting a plurality of thermoelectric materials is not necessary. In particular, when the thermoelectric material is wound in a plurality of turns, the length per unit area of the thermoelectric material in the direction of the electromotive force can be significantly increased, making it possible to significantly increase thermoelectromotive voltage while suppressing increase in the size of the element.

公开(公告)号：US20250167293A1

公开(公告)日：2025-05-22

申请号：US18839482

申请日：2022-09-28

Applicant: TDK Corporation

Inventor： Hiroshi SATO ,  Tomoko NAKAMURA ,  Shota SUZUKI ,  Ayaka NAGATOMI

IPC: H01M10/0562 ,  H01M4/02 ,  H01M4/36 ,  H01M4/38 ,  H01M4/485 ,  H01M4/525

Abstract: An all-solid-state battery according to the present embodiment includes a sintered body having a positive electrode, a negative electrode and a solid electrolyte layer disposed between the positive electrode and the negative electrode, the solid electrolyte contains a solid electrolyte having a γ-Li3PO4-type crystal structure, and the negative electrode has a layer containing a metal composed of Ag or a Li—Ag alloy and a compound represented by LiαTi5O12 (4≤α≤7).

公开(公告)号：US20200294687A1

公开(公告)日：2020-09-17

申请号：US16818413

申请日：2020-03-13

Applicant: TDK Corporation

Inventor： Shota SUZUKI ,  Nobuyuki OKUZAWA

IPC: H01B3/10

Abstract: A dielectric composition contains a complex oxide represented by a composition formula of BixZnyNbzO1.75+δ. x+y+z=1.00. x

公开(公告)号：US20250167295A1

公开(公告)日：2025-05-22

申请号：US18841244

申请日：2022-09-28

Applicant: TDK CORPORATION

Inventor： Hiroshi SATO ,  Tomoko NAKAMURA ,  Yuusuke YAMAGUCHI ,  Shota SUZUKI ,  Ayaka NAGATOMI

IPC: H01M10/0562 ,  H01M4/131 ,  H01M10/0525

Abstract: An all-solid-state battery according to the present embodiment includes a sintered body having a positive electrode, a negative electrode and a solid electrolyte layer that is between the positive electrode and the negative electrode, the positive electrode contains a compound having a spinel structure, the solid electrolyte layer contains a solid electrolyte having a γ-Li3PO4-type crystal structure, the compound having a spinel structure is represented by LiαMβMn2−βO4 . . . (1), and, in the formula (1), M is one or more atoms selected from transition metals, 0.8≤α≤1.2 is satisfied, and 0.1≤β≤0.9 is satisfied.

公开(公告)号：US20250167294A1

公开(公告)日：2025-05-22

申请号：US18841232

申请日：2022-09-28

Applicant: TDK CORPORATION

Inventor： Hiroshi SATO ,  Tomoko NAKAMURA ,  Yuusuke YAMAGUCHI ,  Shota SUZUKI ,  Ayaka NAGATOMI

IPC: H01M10/0562 ,  H01M4/38

Abstract: An all-solid-state battery according to the present embodiment includes a sintered body having a positive electrode, a negative electrode and a solid electrolyte layer disposed between the positive electrode and the negative electrode, the solid electrolyte layer contains a solid electrolyte having a γ-Li3PO4-type crystal structure, and the negative electrode contains pure Ag or a Ag alloy and at least one compound of LiαTiO3 (2≤α≤2.8) and LiβTiSiO5 (2≤β≤4).

公开(公告)号：US20220320410A1

公开(公告)日：2022-10-06

申请号：US17640213

申请日：2020-10-05

Applicant: TDK Corporation

Inventor： Shota SUZUKI ,  Youhei NODA

IPC: H01L35/32 ,  H01L37/04 ,  H01L35/34

Abstract: To obtain a high thermoelectromotive voltage with a simple structure in a thermoelectric conversion element with a magnetization direction, a temperature gradient direction, and an electromotive force direction mutually orthogonal. A thermoelectric conversion element 1 includes a tape-like member 10 including an insulating film and a thermoelectric material layer formed on the surface of the insulating film and having a magnetization direction, a temperature gradient direction, and an electromotive force direction which are mutually orthogonal and a pair of terminal electrodes E1 and E2 connected to the thermoelectric material layer at positions different in the longitudinal direction thereof. The tape-like member 10 is wound with the longitudinal direction thereof directed to the circumferential direction, and the thermoelectric material layer is radially magnetized. Thus, the radially magnetized tape-like thermoelectric material layer is circumferentially wound, so that a thermoelectromotive voltage can be generated in accordance with a temperature gradient in the axial direction. In addition, the electromotive force occurs circumferentially, making the structure of the tape-like member simple.

公开(公告)号：US20210012961A1

公开(公告)日：2021-01-14

申请号：US17042523

申请日：2019-03-15

Applicant: TDK CORPORATION

Inventor： Shota SUZUKI ,  Nobuyuki OKUZAWA ,  Daisuke HIROSE ,  Shirou OOTSUKI ,  Wakiko SATO

IPC: H01G4/12 ,  H01B3/12 ,  H01G4/33 ,  H01G4/30 ,  C04B35/495 ,  C04B35/453

Abstract: A dielectric composition including a complex oxide containing bismuth, zinc, and niobium, includes a crystal phase formed of the complex oxide and having a pyrochlore type crystal structure, and an amorphous phase. When the complex oxide is represented by a composition formula BixZnyNbzO1.75+δ, in which x, y, and z satisfy relations of x+y+z=1.00, 0.20≤y≤0.50, and 2/3≤x/z≤3/2.