公开(公告)号：US20230238510A1

公开(公告)日：2023-07-27

申请号：US17949365

申请日：2022-09-21

Applicant: Samsung Electronics Co., Ltd.

Inventor： Nobuyoshi YASHIRO ,  Shoichi SUGATA

IPC: H01M4/134 ,  H01M10/0562 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/62

CPC classification number: H01M4/134 ,  H01M10/0562 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/625 ,  H01M2004/021

Abstract: A solid secondary battery includes: a positive electrode; a negative electrode; and a solid electrolyte disposed between the positive electrode and the negative electrode, wherein the negative electrode includes a negative electrode current collector, and a negative active material layer between the negative electrode current collector and the solid electrolyte, the negative active material layer includes a particulate carbon and a negative active material that forms an alloy or a compound with lithium, a content of the negative active material per unit area of the negative active material layer is about 0.01 milligram per square centimeter or to about 1 milligram per square centimeter, and a film strength of the negative active material layer is about 50 megapascals to about 250 megapascals.

公开(公告)号：US20220311047A1

公开(公告)日：2022-09-29

申请号：US17545091

申请日：2021-12-08

Applicant: Samsung Electronics Co., Ltd.

Inventor： Nobuyoshi YASHIRO ,  Shoichi SUGATA

IPC: H01M10/0562 ,  H01M4/133 ,  H01M4/583 ,  H01M10/0525 ,  H01M4/62 ,  H01M4/505 ,  H01M4/525

Abstract: An all-solid secondary battery includes a cathode layer, an anode layer having an anode current collector and an anode active material layer on the anode current collector, and a solid electrolyte layer between the cathode layer and the anode layer, wherein the solid electrolyte is an oxide, phosphate, borate, sulfate, an oxynitride, or a combination thereof, and a binding strength between the anode and the solid electrolyte layer is in a range of about 14 millinewtons per millimeter to about 100 millinewtons per millimeter, and a film strength of the anode active material layer is in a range of about 16 megapascals to about 85 megapascals.

公开(公告)号：US20200313164A1

公开(公告)日：2020-10-01

申请号：US16829349

申请日：2020-03-25

Applicant: Samsung Electronics Co., Ltd.

Inventor： Naoki SUZUKI ,  Nobuyoshi YASHIRO ,  Yuichi AIHARA

IPC: H01M4/133 ,  H01M10/0562 ,  H01M10/052 ,  H01M10/0585 ,  H01M4/134 ,  H01M4/36 ,  H01M4/38 ,  H01M4/587

Abstract: An all-solid lithium secondary battery, including: a cathode including a cathode active material layer, a solid electrolyte layer; and an anode including an anode active material layer, which forms an alloy or a compound with lithium, wherein the cathode, the solid electrolyte is between the cathode and the anode, wherein the anode active material layer includes about 33 weight percent to about 95 weight percent of an amorphous carbon with respect to the total mass of an anode active material in the anode active material layer, and a ratio of the initial charge capacity of the cathode active material layer to the initial charge capacity of the anode active material layer satisfies 0.01

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.

公开(公告)号：US20190157723A1

公开(公告)日：2019-05-23

申请号：US16196252

申请日：2018-11-20

Applicant: Samsung Electronics Co., Ltd.

Inventor： Naoki SUZUKI ,  Nobuyoshi YASHIRO ,  Takanobu YAMADA ,  Yuichi AIHARA

IPC: H01M10/0585 ,  H01M10/44 ,  H01M10/0525 ,  H01M4/587 ,  H01M4/66 ,  H01M4/38 ,  H01M4/36

Abstract: An all-solid-state secondary battery including: a cathode including a cathode active material layer; an anode including an anode current collector, and an anode active material layer on the anode current collector, wherein the anode active material layer includes an anode active material which is alloyable with lithium or forms a compound with lithium; and a solid electrolyte layer between the cathode and the anode, wherein a ratio of an initial charge capacity (b) of the anode active material layer to an initial charge capacity (a) of the cathode active material layer satisfies a condition of Equation 1: 0.01

公开(公告)号：US20230155109A1

公开(公告)日：2023-05-18

申请号：US18157105

申请日：2023-01-20

Applicant: Samsung Electronics Co., Ltd.

Inventor： Naoki SUZUKI ,  Nobuyoshi YASHIRO ,  Yuichi AIHARA

IPC: H01M4/133 ,  H01M10/0562 ,  H01M10/052 ,  H01M10/0585 ,  H01M4/36 ,  H01M4/38 ,  H01M4/587 ,  H01M4/134

CPC classification number: H01M4/133 ,  H01M10/0562 ,  H01M10/052 ,  H01M10/0585 ,  H01M4/364 ,  H01M4/38 ,  H01M4/587 ,  H01M4/134 ,  H01M2004/027

Abstract: An all-solid lithium secondary battery, including: a cathode including a cathode active material layer; a solid electrolyte layer; and an anode including an anode active material layer, which forms an alloy or a compound with lithium, wherein the cathode, the solid electrolyte is between the cathode and the anode, wherein the anode active material layer includes about 33 weight percent to about 95 weight percent of an amorphous carbon with respect to the total mass of an anode active material in the anode active material layer, and a ratio of the initial charge capacity of the cathode active material layer to the initial charge capacity of the anode active material layer satisfies 0.01

公开(公告)号：US20230024868A1

公开(公告)日：2023-01-26

申请号：US17856016

申请日：2022-07-01

Applicant: Samsung Electronics Co., Ltd. ,  TOHOKU UNIVERSITY

Inventor： Itaru HOMMA ,  Tomoyuki TSUJIMURA ,  Nobuyoshi YASHIRO ,  Guohao YUAN

IPC: H01M4/36 ,  H01M4/505 ,  H01M4/58 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/04

Abstract: A coated cathode active material, a method of preparing the same, and a cathode and a non-aqueous electrolyte secondary battery, each including the same, the coated cathode active material including: a cathode active material particle and a coating layer on a surface of the cathode active material particle, the coating layer including LiAlF4, LiF, and Li3AlF6.

公开(公告)号：US20250070262A1

公开(公告)日：2025-02-27

申请号：US18943072

申请日：2024-11-11

Applicant: Samsung Electronics Co., Ltd.

Inventor： Naoki SUZUKI ,  Nobuyoshi YASHIRO ,  Takanobu YAMADA ,  Yuichi AIHARA

IPC: H01M10/0585 ,  H01M4/02 ,  H01M4/133 ,  H01M4/36 ,  H01M4/38 ,  H01M4/587 ,  H01M4/66 ,  H01M10/0525 ,  H01M10/0562 ,  H01M10/42 ,  H01M10/44

Abstract: A method of charging an all-solid-state secondary battery, wherein when charging is performed an initial charge capacity of the anode active material layer is exceeded, and a metal layer can be deposited anywhere between the anode current collector and the solid electrolyte, and an initial charge capacity of the cathode active material layer is greater than an initial charge capacity of the anode active material layer. The all-solid-state secondary battery including: a cathode including a cathode active material layer; an anode including an anode current collector, and an anode active material layer on the anode current collector, wherein the anode active material layer includes a plurality of particles comprising amorphous carbon.

公开(公告)号：US20240047761A1

公开(公告)日：2024-02-08

申请号：US18483856

申请日：2023-10-10

Applicant: Samsung Electronics Co., Ltd.

Inventor： Naoki SUZUKI ,  Nobuyoshi YASHIRO ,  Takanobu YAMADA ,  Yuichi AIHARA

IPC: H01M10/0585 ,  H01M10/44 ,  H01M10/0525 ,  H01M4/66 ,  H01M4/38 ,  H01M4/36 ,  H01M4/587 ,  H01M10/0562 ,  H01M4/133

CPC classification number: H01M10/0585 ,  H01M10/44 ,  H01M10/0525 ,  H01M4/667 ,  H01M4/382 ,  H01M4/366 ,  H01M4/587 ,  H01M4/364 ,  H01M10/0562 ,  H01M4/133 ,  H01M2004/027

Abstract: An all-solid-state secondary battery including: a cathode including a cathode active material layer; an anode including an anode current collector, and an anode active material layer on the anode current collector, wherein the anode active material layer includes an anode active material which is alloyable with lithium or forms a compound with lithium; and a solid electrolyte layer between the cathode and the anode, wherein a ratio of an initial charge capacity (b) of the anode active material layer to an initial charge capacity (a) of the cathode active material layer satisfies a condition of Equation 1: 0.01

公开(公告)号：US20230187705A1

公开(公告)日：2023-06-15

申请号：US18163963

申请日：2023-02-03

Applicant: Samsung Electronics Co., Ltd.

Inventor： Naoki SUZUKI ,  Nobuyoshi YASHIRO ,  Takanobu YAMADA ,  Yuichi AIHARA

IPC: H01M10/0585 ,  H01M10/44 ,  H01M10/0525 ,  H01M4/66 ,  H01M4/38 ,  H01M4/36 ,  H01M4/587 ,  H01M10/0562 ,  H01M4/133

CPC classification number: H01M10/0585 ,  H01M4/133 ,  H01M4/364 ,  H01M4/366 ,  H01M4/382 ,  H01M4/587 ,  H01M4/667 ,  H01M10/44 ,  H01M10/0525 ,  H01M10/0562 ,  H01M2004/027

Abstract: An all-solid-state secondary battery including: a cathode including a cathode active material layer; an anode including an anode current collector, and an anode active material layer on the anode current collector, wherein the anode active material layer includes an anode active material which is alloyable with lithium or forms a compound with lithium; and a solid electrolyte layer between the cathode and the anode, wherein a ratio of an initial charge capacity (b) of the anode active material layer to an initial charge capacity (a) of the cathode active material layer satisfies a condition of Equation 1: 0.01