skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Polyarene mediators for mediated redox flow battery

Abstract

The fundamental charge storage mechanisms in a number of currently studied high energy redox couples are based on intercalation, conversion, or displacement reactions. With exception to certain metal-air chemistries, most often the active redox materials are stored physically in the electrochemical cell stack thereby lowering the practical gravimetric and volumetric energy density as a tradeoff to achieve reasonable power density. In a general embodiment, a mediated redox flow battery includes a series of secondary organic molecules that form highly reduced anionic radicals as reaction mediator pairs for the reduction and oxidation of primary high capacity redox species ex situ from the electrochemical cell stack. Arenes are reduced to stable anionic radicals that in turn reduce a primary anode to the charged state. The primary anode is then discharged using a second lower potential (more positive) arene. Compatible separators and solvents are also disclosed herein.

Inventors:
; ;
Issue Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1415436
Patent Number(s):
9859583
Application Number:
14/515,423
Assignee:
National Technology & Engineering Solutions of Sandia, LLC (Albuquerque, NM); UT-Battelle, LLC (Oak Ridge, TN)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Resource Relation:
Patent File Date: 2014 Oct 15
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 25 ENERGY STORAGE

Citation Formats

Delnick, Frank M., Ingersoll, David, and Liang, Chengdu. Polyarene mediators for mediated redox flow battery. United States: N. p., 2018. Web.
Delnick, Frank M., Ingersoll, David, & Liang, Chengdu. Polyarene mediators for mediated redox flow battery. United States.
Delnick, Frank M., Ingersoll, David, and Liang, Chengdu. Tue . "Polyarene mediators for mediated redox flow battery". United States. https://www.osti.gov/servlets/purl/1415436.
@article{osti_1415436,
title = {Polyarene mediators for mediated redox flow battery},
author = {Delnick, Frank M. and Ingersoll, David and Liang, Chengdu},
abstractNote = {The fundamental charge storage mechanisms in a number of currently studied high energy redox couples are based on intercalation, conversion, or displacement reactions. With exception to certain metal-air chemistries, most often the active redox materials are stored physically in the electrochemical cell stack thereby lowering the practical gravimetric and volumetric energy density as a tradeoff to achieve reasonable power density. In a general embodiment, a mediated redox flow battery includes a series of secondary organic molecules that form highly reduced anionic radicals as reaction mediator pairs for the reduction and oxidation of primary high capacity redox species ex situ from the electrochemical cell stack. Arenes are reduced to stable anionic radicals that in turn reduce a primary anode to the charged state. The primary anode is then discharged using a second lower potential (more positive) arene. Compatible separators and solvents are also disclosed herein.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {1}
}

Patent:

Save / Share:

Works referenced in this record:

Reversible chemical delithiation/lithiation of LiFePO4 : towards a redox flow lithium-ion battery
journal, December 2013


Reactions of the radical anions and dianions of aromatic hydrocarbons
journal, April 1974


Synthesis and Characterization of Biphenyl-Based Lithium Solvated Electron Solutions
journal, July 2012


Differentiation of polycyclic aromatic hydrocarbons using electron capture negative chemical ionization
journal, October 1984