公开(公告)号：US20240097221A1

公开(公告)日：2024-03-21

申请号：US18524808

申请日：2023-11-30

Applicant: NGK INSULATORS, LTD.

Inventor： Minoru TANIMOTO ,  Takeshi YAGI

IPC: H01M10/52 ,  B01D53/04 ,  B01J20/26 ,  B01J20/28 ,  H01M10/28 ,  H01M10/30

CPC classification number: H01M10/52 ,  B01D53/0407 ,  B01J20/262 ,  B01J20/28033 ,  H01M10/28 ,  H01M10/30 ,  B01D2253/202 ,  B01D2257/104

Abstract: There is provided a nickel-zinc secondary battery including, in a sealed container, a positive electrode, a negative electrode, a separator provided between the positive electrode and the negative electrode, and an electrolytic solution. An oxygen absorber is provided in a position where oxygen generated in the positive electrode in the sealed container is absorbable.

公开(公告)号：US20240014449A1

公开(公告)日：2024-01-11

申请号：US18472490

申请日：2023-09-22

Applicant: NGK INSULATORS, LTD.

Inventor： Minoru TANIMOTO ,  Takeshi YAGI

IPC: H01M10/28 ,  H01M4/24 ,  H01M50/46 ,  H01M10/42 ,  H01M50/434 ,  H01M50/449 ,  H01M50/411 ,  H01M4/32 ,  H01M10/30 ,  H01M12/08

CPC classification number: H01M10/28 ,  H01M4/244 ,  H01M50/46 ,  H01M10/4235 ,  H01M50/434 ,  H01M50/449 ,  H01M50/411 ,  H01M4/32 ,  H01M10/30 ,  H01M12/08 ,  H01M2004/027

Abstract: There is provided a zinc secondary battery including a unit cell including: a positive electrode plate; a negative electrode plate; a nonwoven fabric covering or wrapping up each of the positive electrode plate and the negative electrode plate; a hydroxide ion conductive separator; and an electrolytic solution; and a battery container housing the unit cell. Each element is vertically arranged, and an excessive portion of the electrolytic solution is always retained on a bottom of the battery container in an amount corresponding to a liquid level lower than lower ends of the positive electrode plate and the negative electrode plate. The nonwoven fabric covering or wrapping up the positive electrode plate has a lower extension portion contactable with the excessive portion of the electrolytic solution, and a lower end of the lower extension portion is always positioned below the liquid level of the excessive portion of the electrolytic solution.