US 12,243,685 B2
Electrochemical device
Nao Miyaguchi, Osaka (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Appl. No. 17/998,655
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
PCT Filed May 18, 2021, PCT No. PCT/JP2021/018829
§ 371(c)(1), (2) Date Nov. 12, 2022,
PCT Pub. No. WO2021/241334, PCT Pub. Date Dec. 2, 2021.
Claims priority of application No. 2020-094833 (JP), filed on May 29, 2020.
Prior Publication US 2023/0197359 A1, Jun. 22, 2023
Int. Cl. H01G 11/24 (2013.01); H01G 11/42 (2013.01); H01G 11/58 (2013.01)
CPC H01G 11/24 (2013.01) [H01G 11/42 (2013.01); H01G 11/58 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An electrochemical device comprising:
a pair of electrodes; and
an electrolytic solution, wherein:
at least one of the pair of electrodes contains porous carbon particles,
in a pore distribution of the porous carbon particles, an integrated volume B is more than or equal to 0.15 cm3/g and less than or equal to 0.35 cm3/g and an integrated volume C is less than or equal to 0.25 cm3/g, the integrated volume B being an integrated volume of pores each having a pore diameter of more than or equal to 20 Å and less than or equal to 60 Å, the integrated volume C being an integrated volume of pores each having a pore diameter of more than 60 Å and less than or equal to 500 Å, and
in a log differential pore volume distribution of the porous carbon particles, a log differential pore volume V20 at a pore diameter of 20 Å is more than or equal to 0.5 cm3/g·Å and a log differential pore volume V60 at a pore diameter of 60 Å is less than or equal to 0.3 cm3/g·Å.