US 12,444,550 B2
Supercapacitor
Xiaoxia Xiang, Guangdong (CN); Zhengsheng Zhang, Guangdong (CN); and Yunxian Qian, Guangdong (CN)
Assigned to SHENZHEN CAPCHEM TECHNOLOGY CO., LTD., Shenzhen (CN)
Appl. No. 18/693,517
Filed by SHENZHEN CAPCHEM TECHNOLOGY CO., LTD., Guangdong (CN)
PCT Filed Sep. 21, 2022, PCT No. PCT/CN2022/120106
§ 371(c)(1), (2) Date Mar. 20, 2024,
PCT Pub. No. WO2023/071628, PCT Pub. Date May 4, 2023.
Claims priority of application No. 202111262960.1 (CN), filed on Oct. 28, 2021.
Prior Publication US 2025/0140487 A1, May 1, 2025
Int. Cl. H01G 11/64 (2013.01); H01G 11/04 (2013.01); H01G 11/60 (2013.01)
CPC H01G 11/64 (2013.01) [H01G 11/04 (2013.01); H01G 11/60 (2013.01)] 10 Claims
 
1. A supercapacitor, comprising a positive electrode, a negative electrode and an organic electrolyte solution, wherein the organic electrolyte solution comprises an organic electrolyte, a proton inert solvent and an additive, and the additive comprises a compound represented by structural formula 1:

OG Complex Work Unit Chemistry
wherein R1-R6 are each independently selected from a hydrocarbon group with 1-5 carbon atoms, a siloxane group substituted by a hydrocarbon group with 1-3 carbon atoms, an unsubstituted siloxane group, or hydrogen; the positive electrode and negative electrode are both porous carbon materials, and the porous carbon material and the compound represented by structural formula 1 meet the following condition:

OG Complex Work Unit Math
where BET is a specific surface area of the porous carbon material in m2/g; Vt is a ratio of mesoporous specific surface area of the porous carbon material to micropore specific surface area of the porous carbon material; Mt is a mass percentage of the compound represented by structural formula 1 in the organic electrolyte solution, and the unit is %.