公开(公告)号：US20200381701A1

公开(公告)日：2020-12-03

申请号：US16770396

申请日：2018-11-26

Applicant: SHOWA DENKO K.K.

Inventor： Takaki YASUDA ,  Akira SAKAWAKI ,  Haruaki UCHIDA

IPC: H01M4/04 ,  H01M10/0525 ,  H01M10/44 ,  H01M4/38 ,  H01M10/0562 ,  H01M10/0585

Abstract: A method for manufacturing a lithium-ion rechargeable battery (1), the lithium-ion rechargeable battery including: a positive electrode layer (30) containing a positive electrode active material; a solid electrolyte layer (40) containing an inorganic solid electrolyte; a storage layer (50) made of porous platinum (Pt) and storing lithium; a coating layer (60) made of an amorphous chromium-titanium (CrTi) alloy; and a negative electrode collector layer (70) made of platinum (Pt); these layers are stacked in this order. The storage layer (50) is first composed of a dense platinum layer formed by sputtering, and then undergoes initial charge and discharge to become porous, which results in a porous part (51) and a number of pores (52) being formed. This method of manufacturing the lithium-ion rechargeable battery (1) restrains or prevents peeling inside the all-solid lithium-ion rechargeable battery.

公开(公告)号：US20200350619A1

公开(公告)日：2020-11-05

申请号：US16770114

申请日：2018-11-26

Applicant: SHOWA DENKO K.K.

Inventor： Takaki YASUDA ,  Akira SAKAWAKI ,  Haruaki UCHIDA

IPC: H01M10/0562 ,  H01M10/0525 ,  H01M4/38 ,  H01M4/13

Abstract: A lithium-ion rechargeable battery (1) includes: a positive electrode layer (30) containing a positive electrode active material; a solid electrolyte layer (40) containing an inorganic solid electrolyte; a storage layer (50) made of porous platinum (Pt) and storing lithium; a coating layer (60) made of an amorphous chromium-titanium (CrTi) alloy; and a negative electrode collector layer (70) made of platinum (Pt); these layers are stacked in this order. The storage layer (50) is first composed of a dense platinum layer formed by sputtering, and then undergoes initial charge and discharge to become porous, which results in a porous part (51) and a number of pores (52) being formed. This restrains or prevents peeling inside the all-solid lithium-ion rechargeable battery.

公开(公告)号：US20200274191A1

公开(公告)日：2020-08-27

申请号：US16646708

申请日：2018-07-23

Applicant: SHOWA DENKO K.K.

Inventor： Takaki YASUDA ,  Akira SAKAWAKI ,  Tatsunori SHINO

IPC: H01M10/0525 ,  H01M10/0562 ,  H01M4/485 ,  H01M4/62 ,  H01M10/0585

Abstract: A lithium-ion rechargeable battery (1) including: a substrate (10); a negative electrode collector layer (20) made of metal; a negative electrode layer (30) containing a negative-electrode active material; a solid electrolyte layer (40) containing an inorganic solid electrolyte; a positive electrode layer (60) containing a positive-electrode active material and the inorganic solid electrolyte; and a mixture layer (50) containing the positive-electrode active material and the inorganic solid electrolyte provided between the solid electrolyte layer (40) and the positive electrode layer (60), the ratio of the positive-electrode active material therein being lower than that in the positive electrode layer (60). Also disclosed is a method for producing a lithium-ion rechargeable battery.

公开(公告)号：US20200259171A1

公开(公告)日：2020-08-13

申请号：US16639211

申请日：2018-08-22

Applicant: SHOWA DENKO K.K.

Inventor： Haruaki UCHIDA ,  Akira SAKAWAKI ,  Takaki YASUDA

IPC: H01M4/36 ,  H01M10/0525 ,  H01M4/1395 ,  H01M4/04 ,  H01M10/44 ,  H01M4/134 ,  H01M4/62 ,  H01M4/38 ,  H01M10/0585

Abstract: A lithium-ion rechargeable battery (1) includes: a positive electrode layer (20) containing a positive electrode active material; a solid electrolyte layer (30) containing an inorganic solid electrolyte having lithium ion conductivity; and a negative electrode collector layer (50) serving as a negative electrode. The negative electrode collector layer (50) includes: a storage layer (51) containing multiple columnar crystals made of metal titanium and each extending in a thickness direction; and a coating layer (52) coating the storage layer (51). By a charging operation of the lithium-ion rechargeable battery (1), a negative electrode (40) made of metal lithium is formed at grain boundaries inside the storage layer (51). This prevents peeling inside the all-solid lithium-ion rechargeable battery.