公开(公告)号：US20240332589A1

公开(公告)日：2024-10-03

申请号：US18607565

申请日：2024-03-18

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takashi NAKAGAWA ,  Yohei NOJI ,  Kyohei IZUMI ,  Hiroki ICHIHARA ,  Hayato TAKAHASHI ,  Katsutoshi SAKURAI ,  Fumika FUJISAKI

IPC: H01M10/04

CPC classification number: H01M10/04

Abstract: The invention provides a method for manufacturing a solid-state secondary battery including a multilayer electrode structure including a negative electrode layer, an intermediate layer, a solid electrolyte layer, and a positive electrode layer stacked in order. The method includes a step 1A including pressure-bonding a negative electrode layer and an intermediate layer to form a stack of the negative electrode layer and the intermediate layer; a step 1B including pressure-bonding the intermediate layer of the stack and a solid electrolyte layer to form a stack of the negative electrode layer, the intermediate layer, and the solid electrolyte layer; and a step 1C including pressure-bonding the solid electrolyte layer of the stack and a positive electrode layer to form the multilayer electrode structure.

公开(公告)号：US20220246933A1

公开(公告)日：2022-08-04

申请号：US17583233

申请日：2022-01-25

Applicant: HONDA MOTOR CO., LTD.

Inventor： Katsutoshi SAKURAI ,  Yoshiyuki MORITA

IPC: H01M4/58 ,  H01M4/38 ,  H01M10/0562

Abstract: Provided is a fluoride ion secondary battery that shows high charging and discharging efficiency even in an environment with an oxygen concentration of more than 2 ppm. The fluoride ion secondary battery includes a positive electrode material layer; a negative electrode material layer; a solid electrolyte layer disposed between the positive electrode material layer and the negative electrode material layer; and an exterior body that accommodates the positive electrode material layer, the negative electrode material layer, and the solid electrolyte layer in a hermetically sealed space filled with an Ar atmosphere. The hermetically sealed space in the exterior body may have an oxygen concentration of 7.3 ppm or less.

公开(公告)号：US20220238876A1

公开(公告)日：2022-07-28

申请号：US17583232

申请日：2022-01-25

Applicant: HONDA MOTOR CO., LTD.

Inventor： Katsutoshi SAKURAI ,  Yoshiyuki MORITA

IPC: H01M4/58 ,  H01M4/38 ,  H01M10/0562 ,  H01M4/04 ,  H01M4/66

Abstract: Provided is a fluoride ion secondary battery having high charging and discharging efficiency at room temperature. The fluoride ion secondary battery includes a positive electrode material layer including Ag; a negative electrode material layer including at least one of CeF3 and PbF2; and a solid electrolyte layer including LaF3 and disposed between the positive electrode material layer and the negative electrode material layer. The fluoride ion secondary battery may further include a negative electrode current collector layer disposed on an outer side of the negative electrode material layer. The negative electrode current collector layer may include carbon when the negative electrode material layer includes CeF3 or may include a Pb foil when the negative electrode material layer includes PbF2.