公开(公告)号：US20210083252A1

公开(公告)日：2021-03-18

申请号：US17108139

申请日：2020-12-01

Applicant: Samsung Electronics Co., Ltd.

Inventor： Satoshi FUJIKI ,  Takanobu YAMADA ,  Tomoyuki SHIRATSUCHI ,  Yuichi AIHARA

IPC: H01M2/16 ,  H01M4/133 ,  H01M10/052 ,  H01M10/0562 ,  H01M10/058 ,  H01M4/66 ,  H01M4/36 ,  H01M4/38 ,  H01M4/131 ,  H01M4/134 ,  H01M4/62 ,  H01M10/04

Abstract: An all-solid secondary battery including: a cathode including a cathode active material layer; an anode including an anode active material layer; and a solid electrolyte layer including a sulfide solid electrolyte between the cathode active material layer and the anode active material layer, wherein an arithmetic mean roughness (Ra) of an interface between the cathode active material layer and the solid electrolyte layer is about 1 micrometer or less, and a relative density of the solid electrolyte layer is about 80% or more.

公开(公告)号：US20180351159A1

公开(公告)日：2018-12-06

申请号：US15990898

申请日：2018-05-29

Applicant: Samsung Electronics Co., Ltd.

Inventor： Satoshi FUJIKI ,  Takanobu YAMADA ,  Tomoyuki SHIRATSUCHI ,  Yuichi AIHARA

IPC: H01M4/133 ,  H01M10/052 ,  H01M10/0562 ,  H01M10/058 ,  H01M4/38 ,  H01M4/66 ,  H01M4/36

Abstract: An all-solid secondary battery including: a cathode including a cathode active material layer; an anode including an anode active material layer; and a solid electrolyte layer including a sulfide solid electrolyte between the cathode active material layer and the anode active material layer, wherein an arithmetic mean roughness (Ra) of an interface between the cathode active material layer and the solid electrolyte layer is about 1 micrometer or less, and a relative density of the solid electrolyte layer is about 80% or more.

公开(公告)号：US20180090752A1

公开(公告)日：2018-03-29

申请号：US15466409

申请日：2017-03-22

Applicant: Samsung Electronics Co., Ltd.

Inventor： Satoshi FUJIKI ,  Tomoyuki SHIRATSUCHI ,  Yuichi AIHARA

IPC: H01M4/36 ,  H01M4/58 ,  H01M10/0562 ,  H01M4/485 ,  H01M10/0525

CPC classification number: H01M4/364 ,  C01B25/45 ,  H01M4/366 ,  H01M4/485 ,  H01M4/5825 ,  H01M4/62 ,  H01M10/052 ,  H01M10/0562 ,  H01M2004/028 ,  H01M2300/0068

Abstract: A cathode active material including a first composite oxide represented by Formula (1): xV2O5.Li3PO4  (1) wherein, in Formula 1, x satisfies 2

公开(公告)号：US20180212233A1

公开(公告)日：2018-07-26

申请号：US15871245

申请日：2018-01-15

Applicant: Samsung Electronics Co., Ltd.

Inventor： Seitaro ITO ,  Tomoyuki SHIRATSUCHI ,  Yuichi AIHARA ,  Tomoyuki TSUJIMURA

IPC: H01M4/36 ,  H01M10/0562 ,  H01M4/131 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/362 ,  H01M4/131 ,  H01M4/366 ,  H01M4/485 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0562 ,  H01M2004/028 ,  H01M2300/0068

Abstract: A composite cathode active material including: a core particle; a first coating layer; and a second coating layer; wherein the core particle includes a cathode active material, the first and second coating layers cover a surface of the core particle, the first coating layer includes a first lithium-containing compound, wherein the first lithium-containing compound includes zirconium, niobium, titanium, aluminum, or a combination thereof, the second coating layer includes a second lithium-containing compound, wherein the second lithium-containing compound includes germanium, niobium, gallium, or a combination thereof, and the first lithium-containing compound is different from the second lithium-containing compound.

公开(公告)号：US20190260065A1

公开(公告)日：2019-08-22

申请号：US16280610

申请日：2019-02-20

Applicant: Samsung Electronics Co., Ltd.

Inventor： Nobuyoshi YASHIRO ,  Seitaro ITO ,  Tomoyuki SHIRATSUCHI ,  Yuichi AIHARA

IPC: H01M10/04 ,  H01M4/46 ,  H01M4/38 ,  H01M4/133

Abstract: An all-solid-state secondary battery including: a positive electrode active material layer including a positive electrode active material and a sacrificial positive electrode material having an oxidation-reduction potential which is less than a discharge voltage of the positive electrode active material; and a negative electrode active material layer including a negative electrode active material including an element alloyable with lithium or that forms a compound with lithium; and a solid electrolyte layer between the positive electrode active material layer and the negative electrode active material layer, wherein the sacrificial positive electrode material includes a sacrificial active material and a conductive agent.