US 11,718,533 B2
Power storage device
Yuta Goto, Iwaki (JP); Susumu Shinoki, Iwaki (JP); Atsutomo Tsuchiya, Iwaki (JP); Tomohiro Ito, Yonezawa (JP); and Kazuhiro Tachibana, Yonezawa (JP)
Assigned to KUNIMINE INDUSTRIES CO., LTD., Tokyo (JP)
Appl. No. 17/424,428
Filed by KUNIMINE INDUSTRIES CO., LTD., Tokyo (JP)
PCT Filed Jan. 8, 2020, PCT No. PCT/JP2020/000333
§ 371(c)(1), (2) Date Jul. 20, 2021,
PCT Pub. No. WO2020/162092, PCT Pub. Date Aug. 13, 2020.
Claims priority of application No. 2019-022129 (JP), filed on Feb. 8, 2019.
Prior Publication US 2022/0089450 A1, Mar. 24, 2022
Int. Cl. C01B 33/40 (2006.01); H01G 4/008 (2006.01); H01G 4/12 (2006.01); H01G 4/33 (2006.01); H01M 50/409 (2021.01)
CPC C01B 33/40 (2013.01) [H01G 4/008 (2013.01); H01G 4/1209 (2013.01); H01G 4/33 (2013.01); C01P 2004/24 (2013.01); H01M 50/409 (2021.01)] 7 Claims
OG exemplary drawing
 
1. A power storage device, comprising:
two electrodes; and
a plate-like crystal structure smectite-based clay film between the electrodes,
wherein the plate-like crystal structure smectite-based clay film is a dielectric and has a water content of 5 to 15% by mass, and
wherein the power storage device is not a power storage device having an electrode of aluminum.