Fundacion Centro De Investigacion Cooperativa De Energias Alternativas Cic Energigune Fundazioa

Jon Ajuria Arregi

Michel Armand

Devaraj Shanmukaraj

Daniel Carriazo Martin

Maria Arnaiz Gonzalez

Daniel Carriazo MARTÍN

María Arnaiz GONZÁLEZ

A metal ion capacitor with outstanding power capabilities having a negative electrode based on hard carbon (HC) and a positive electrode based on a combination of activated carbon (AC) and a sacrificial salt selected from the group consisting of squarate, oxalate, ketomalonate and di-ketosuccinate or a combination thereof. The sacrificial salt is added to AC in the positive electrode as a source of metal ions for pre-doping the HC and to efficiently compensate its high irreversible capacity by providing the metal ions necessary for the formation of solid electrolyte interphase (SEI) on the hard carbon, allowing for a 1:1 and superior mass balances between anode and cathode. Advantageously, the extraordinary performance of this approach has been successfully demonstrated not only in lithium ion capacitors (LICs) but also in other metal ion capacitors such as sodium and potassium ion capacitors.

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Alava, Spain

Jon Ajuria Arregi