公开(公告)号：US20230216048A1

公开(公告)日：2023-07-06

申请号：US17927682

申请日：2021-05-20

Applicant: FDK CORPORATION ,  Kansai Catalyst Co., Ltd.

Inventor： Juji KATO ,  Tomohiro FUJISAWA ,  Yuji GOTO ,  Kouichi HASHIMOTO

IPC: H01M4/58 ,  H01M10/058 ,  C01B25/45

CPC classification number: H01M4/5825 ,  H01M10/058 ,  C01B25/45 ,  H01M2004/028

Abstract: This method achieves lithium cobalt pyrophosphate in which the generation of different phases is suppressed. A powder of a lithium compound, a cobalt compound and a phosphorus compound in amounts based on the composition of lithium cobalt pyrophosphate is mixed while adding water at a prescribed temperature (T1), for example, room temperature, and the substance obtained thereby is further mixed at a higher temperature (T2), for example, 40° C.-60° C. In this way, a precursor of lithium cobalt pyrophosphate is formed that has excellent uniformity of distribution of the lithium component, the cobalt component and the phosphorus component. By firing such a precursor, a lithium cobalt pyrophosphate is obtained in which the generation of different phases is suppressed.

公开(公告)号：US20230307715A1

公开(公告)日：2023-09-28

申请号：US18198325

申请日：2023-05-17

Applicant: FDK CORPORATION

Inventor： Masakazu KOBAYASHI ,  Tomohiro FUJISAWA ,  Minako SUZUKI ,  Yuji GOTO

IPC: H01M10/0585 ,  H01M10/48 ,  H01M4/04

CPC classification number: H01M10/0585 ,  H01M4/0471 ,  H01M10/48

Abstract: A solid-state battery includes a battery body in which a positive electrode layer, an electrolyte layer, and a negative electrode layer are stacked; and a reference electrode stacked on a surface in the direction which these layers are stacked. The solid-state battery further includes a positive electrode connected to the positive electrode layer and a negative electrode connected to the negative electrode layer. The positive and negative electrodes are provided on the battery body.