US 12,136,515 B2
Metal ion capacitor based on hard carbon as negative electrode and a mixture of activated carbon and sacrificial salt as the positive electrode
Jon Ajuria Arregi, Alava (ES); Maria Arnaiz Gonzalez, Alava (ES); Michel Armand, Alava (ES); Daniel Carriazo Martin, Alava (ES); and Devaraj Shanmukaraj, Alava (ES)
Assigned to FUNDACION CENTRO DE INVESTIGACION COOPERATIVA DE ENERGIAS ALTERNATIVAS CIC ENERGIGUNE FUNDAZIOA, Alava (ES)
Appl. No. 17/756,222
Filed by FUNDACION CENTRO DE INVESTIGACION COOPERATIVA DE ENERGIAS ALTERNATIVAS CIC ENERGIGUNE FUNDAZIONA, Alava (ES)
PCT Filed Jan. 7, 2021, PCT No. PCT/EP2021/050185
§ 371(c)(1), (2) Date May 19, 2022,
PCT Pub. No. WO2021/140149, PCT Pub. Date Jul. 15, 2021.
Claims priority of application No. 20382006 (EP), filed on Jan. 8, 2020.
Prior Publication US 2022/0406532 A1, Dec. 22, 2022
Int. Cl. H01G 11/34 (2013.01); H01G 11/06 (2013.01); H01G 11/86 (2013.01)
CPC H01G 11/34 (2013.01) [H01G 11/06 (2013.01); H01G 11/86 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A metal ion capacitor comprising:
a negative electrode which comprises a hard carbon,
a positive electrode which comprises an activated carbon and a sacrificial salt mixed with a conducting carbon to obtain a carbon coating on the salt, and
a separator positioned between the two electrodes, wherein the sacrificial salt is selected from the group consisting of squarate, oxalate, ketomalonate, di-ketosuccinate and a combination thereof.