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Title: Energy storage device including a redox-enhanced electrolyte

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.

Inventors:
; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Oregon State Univ., Corvallis, OR (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1374437
Patent Number(s):
9,728,344
Application Number:
14/692,695
Assignee:
Oregon State University ARPA-E
DOE Contract Number:
AR0000344
Resource Type:
Patent
Resource Relation:
Patent File Date: 2015 Apr 21
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; 36 MATERIALS SCIENCE

Citation Formats

Stucky, Galen, Evanko, Brian, Parker, Nicholas, Vonlanthen, David, Auston, David, Boettcher, Shannon, Chun, Sang-Eun, Ji, Xiulei, Wang, Bao, Wang, Xingfeng, and Chandrabose, Raghu Subash. Energy storage device including a redox-enhanced electrolyte. United States: N. p., 2017. Web.
Stucky, Galen, Evanko, Brian, Parker, Nicholas, Vonlanthen, David, Auston, David, Boettcher, Shannon, Chun, Sang-Eun, Ji, Xiulei, Wang, Bao, Wang, Xingfeng, & Chandrabose, Raghu Subash. Energy storage device including a redox-enhanced electrolyte. United States.
Stucky, Galen, Evanko, Brian, Parker, Nicholas, Vonlanthen, David, Auston, David, Boettcher, Shannon, Chun, Sang-Eun, Ji, Xiulei, Wang, Bao, Wang, Xingfeng, and Chandrabose, Raghu Subash. 2017. "Energy storage device including a redox-enhanced electrolyte". United States. doi:. https://www.osti.gov/servlets/purl/1374437.
@article{osti_1374437,
title = {Energy storage device including a redox-enhanced electrolyte},
author = {Stucky, Galen and Evanko, Brian and Parker, Nicholas and Vonlanthen, David and Auston, David and Boettcher, Shannon and Chun, Sang-Eun and Ji, Xiulei and Wang, Bao and Wang, Xingfeng and Chandrabose, Raghu Subash},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2017,
month = 8
}

Patent:

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  • An ionic liquid including a phosphazene compound that has a plurality of phosphorus-nitrogen units and at least one pendant group bonded to each phosphorus atom of the plurality of phosphorus-nitrogen units. One pendant group of the at least one pendant group comprises a positively charged pendant group. Additional embodiments of ionic liquids are disclosed, as are electrolyte solutions and energy storage devices including the embodiments of the ionic liquid.
  • An electrolyte solution comprising at least one phosphoranimine compound and a metal salt. The at least one phosphoranimine compound comprises a compound of the chemical structure ##STR00001## where X is an organosilyl group or a tert-butyl group and each of R.sup.1, R.sup.2, and R.sup.3 is independently selected from the group consisting of an alkyl group, an aryl group, an alkoxy group, or an aryloxy group. An energy storage device including the electrolyte solution is also disclosed.
  • A class of organic redox shuttle additives is described, preferably comprising nitrogen-containing aromatics compounds, which can be used in a high temperature (85 C or higher) electrochemical storage cell comprising a positive electrode, a negative electrode, and a solid polymer electrolyte to provide overcharge protection to the cell. The organic redox additives or shuttles are characterized by a high diffusion coefficient of at least 2.1 {times} 10{sup {minus}8}cm{sup 2}/second and a high onset potential of 2.5 volts or higher. Examples of such organic redox shuttle additives include an alkali metal salt of 1,2,4-triazole, an alkali metal salt of imidazole, 2,3,5,6-tetramethylpyrazine,more » 1,3,5-tricyanobenzene, and a dialkali metal salt of 3-4-dihydroxy-3-cyclobutene-1,2-dione.« less
  • A class of organic redox shuttle additives is described, preferably comprising nitrogen-containing aromatics compounds, which can be used in a high temperature (85.degree. C. or higher) electrochemical storage cell comprising a positive electrode, a negative electrode, and a solid polymer electrolyte to provide overcharge protection to the cell. The organic redox additives or shuttles are characterized by a high diffusion coefficient of at least 2.1.times.10.sup.-8 cm.sup.2 /second and a high onset potential of 2.5 volts or higher. Examples of such organic redox shuttle additives include an alkali metal salt of 1,2,4-triazole, an alkali metal salt of imidazole, 2,3,5,6-tetramethylpyrazine, 1,3,5-tricyanobenzene, andmore » a dialkali metal salt of 3-4-dihydroxy-3-cyclobutene-1,2-dione.« less