Energy storage device including a redox-enhanced electrolyte

US9728344B2 · kind B2 · utility

Assignees

• Oregon State University · US
• The Regents of the University of California · US
• UNIVERSITY OF OREGON · US

Inventors

• Galen D. Stucky · Goleta, US
• Brian Evanko · Goleta, US
• Nicholas Parker · Pasadena, US
• David Vonlanthen · Lompoc, US
• David H. Auston · Mountainside, US
• Shannon W. Boettcher · Eugene, US
• Sang-Eun Chun · Eugene, US
• Xiulei Ji · Lompoc, US
• Bao Wang · Shanghai, CN
• Xingfeng Wang · Corvallis, US
• Raghu Subash Chandrabose · Corvallis, US

Key dates

• Filing date: Apr 21, 2015
• Grant date: Aug 8, 2017
• Expiry date: Sep 15, 2035

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E60/13
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

An electrical double layer capacitor (EDLC) energy storage device is provided that includes at least two electrodes and a redox-enhanced electrolyte including two redox couples such that there is a different one of the redox couples for each of the electrodes. When charged, the charge is stored in Faradaic reactions with the at least two redox couples in the electrolyte and in a double-layer capacitance of a porous carbon material that comprises at least one of the electrodes, and a self-discharge of the energy storage device is mitigated by at least one of electrostatic attraction, adsorption, physisorption, and chemisorption of a redox couple onto the porous carbon material.