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

Title: Development of High Energy Density Diaminocyclopropenium-Phenothiazine Hybrid Catholytes for Non-Aqueous Redox Flow Batteries

Journal Article · · Angewandte Chemie (International Edition)
ORCiD logo [1];  [2];  [1];  [2];  [1]
  1. University of Michigan, Ann Arbor, MI (United States)
  2. University of Utah, Salt Lake City, UT (United States); Argonne National Laboratory (ANL), Argonne, IL (United States). Joint Center for Energy Storage Research (JCESR)

Abstract This report describes the design of diaminocyclopropenium‐phenothiazine hybrid catholytes for non‐aqueous redox flow batteries. The molecules are synthesized in a rapid and modular fashion by appending a diaminocyclopropenium (DAC) substituent to the nitrogen of the phenothiazine. Combining a versatile C‐N coupling protocol (which provides access to diverse derivatives) with computation and structure‐property analysis enabled the identification of a catholyte that displays stable two‐electron cycling at potentials of 0.64 and 1.00 V vs. Fc/Fc + as well as high solubility in all oxidation states (≥0.45 M in TBAPF 6 /MeCN). This catholyte was deployed in a high energy density two‐electron RFB, exhibiting >90 % capacity retention over 266 hours of flow cell cycling at >0.5 M electron concentration.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States). Joint Center for Energy Storage Research (JCESR); Univ. of Utah, Salt Lake City, UT (United States)
Sponsoring Organization:
USDOE Office of Science (SC); National Science Foundation (NSF)
Grant/Contract Number:
AC02-06CH11357; JCESR
OSTI ID:
1981384
Alternate ID(s):
OSTI ID: 1832067
Journal Information:
Angewandte Chemie (International Edition), Vol. 60, Issue 52; ISSN 1433-7851
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

References (46)

Annulated Dialkoxybenzenes as Catholyte Materials for Non-aqueous Redox Flow Batteries: Achieving High Chemical Stability through Bicyclic Substitution journal July 2017
Mechanism-Based Development of a Low-Potential, Soluble, and Cyclable Multielectron Anolyte for Nonaqueous Redox Flow Batteries journal November 2016
Quantifying Environmental Effects on the Solution and Solid-State Stability of a Phenothiazine Radical Cation journal February 2020
Dual function organic active materials for nonaqueous redox flow batteries journal January 2021
Polyoxovanadate-alkoxide clusters as multi-electron charge carriers for symmetric non-aqueous redox flow batteries journal January 2018
Biredox Eutectic Electrolytes Derived from Organic Redox‐Active Molecules: High‐Energy Storage Systems journal April 2019
Physicochemical implications of alkoxide “mixing” in polyoxovanadium clusters for nonaqueous energy storage journal January 2019
High current density, long duration cycling of soluble organic active species for non-aqueous redox flow batteries journal January 2016
High-Performance Oligomeric Catholytes for Effective Macromolecular Separation in Nonaqueous Redox Flow Batteries journal January 2018
Materials and Systems for Organic Redox Flow Batteries: Status and Challenges journal August 2017
Progress and prospects of next-generation redox flow batteries journal November 2018
Highly Concentrated Phthalimide-Based Anolytes for Organic Redox Flow Batteries with Enhanced Reversibility journal December 2018
Steric Manipulation as a Mechanism for Tuning the Reduction and Oxidation Potentials of Phenothiazines journal January 2021
A stable two-electron-donating phenothiazine for application in nonaqueous redox flow batteries journal January 2017
Electrophotocatalysis with a Trisaminocyclopropenium Radical Dication journal September 2019
Reversible redox chemistry in azobenzene-based organic molecules for high-capacity and long-life nonaqueous redox flow batteries journal July 2020
An organic super-electron-donor as a high energy density negative electrolyte for nonaqueous flow batteries journal January 2019
On Transferability of Performance Metrics for Redox-Active Molecules journal June 2019
The energetic implications of curtailing versus storing solar- and wind-generated electricity journal January 2013
3,7-Bis(trifluoromethyl)-N-ethylphenothiazine: a redox shuttle with extensive overcharge protection in lithium-ion batteries journal January 2014
Liquid Catholyte Molecules for Nonaqueous Redox Flow Batteries journal November 2014
“Wine-Dark Sea” in an Organic Flow Battery: Storing Negative Charge in 2,1,3-Benzothiadiazole Radicals Leads to Improved Cyclability journal April 2017
Tailoring Two-Electron-Donating Phenothiazines To Enable High-Concentration Redox Electrolytes for Use in Nonaqueous Redox Flow Batteries journal May 2019
Developing a Predictive Solubility Model for Monomeric and Oligomeric Cyclopropenium-Based Flow Battery Catholytes journal May 2019
Theory and Application of Cyclic Voltammetry for Measurement of Electrode Reaction Kinetics. journal October 1965
Tuning the Stability of Organic Active Materials for Nonaqueous Redox Flow Batteries via Reversible, Electrochemically Mediated Li + Coordination journal April 2016
Cyclopropenium Salts as Cyclable, High-Potential Catholytes in Nonaqueous Media journal November 2016
Towards High-Performance Nonaqueous Redox Flow Electrolyte Via Ionic Modification of Active Species journal August 2014
Biredox Eutectic Electrolytes Derived from Organic Redox‐Active Molecules: High‐Energy Storage Systems journal May 2019
Material design and engineering of next-generation flow-battery technologies journal November 2016
PEGylation-Enabled Extended Cyclability of a Non-aqueous Redox Flow Battery journal March 2020
Performance of a Non-Aqueous Vanadium Acetylacetonate Prototype Redox Flow Battery: Examination of Separators and Capacity Decay journal December 2014
Nonaqueous redox-flow batteries: organic solvents, supporting electrolytes, and redox pairs journal January 2015
A High-Current, Stable Nonaqueous Organic Redox Flow Battery journal September 2016
Multielectron Cycling of a Low-Potential Anolyte in Alkali Metal Electrolytes for Nonaqueous Redox Flow Batteries journal September 2017
Electricity storage for intermittent renewable sources journal January 2012
TEMPO-Based Catholyte for High-Energy Density Nonaqueous Redox Flow Batteries journal October 2014
Two electron utilization of methyl viologen anolyte in nonaqueous organic redox flow battery journal September 2018
Mechanism-Based Design of a High-Potential Catholyte Enables a 3.2 V All-Organic Nonaqueous Redox Flow Battery journal September 2019
Overcharge performance of 3,7-disubstituted N-ethylphenothiazine derivatives in lithium-ion batteries journal January 2014
Electrophotocatalysis with a Trisaminocyclopropenium Radical Dication journal August 2019
All-PEGylated redox-active metal-free organic molecules in non-aqueous redox flow battery journal January 2020
Amphiphilic Viologen: Electrochemical Generation of Organic Reductant and Pd-Catalyzed Reductive Coupling of Aryl Halides in Water journal December 2012
Multi-redox Molecule for High-Energy Redox Flow Batteries journal September 2018
Bio-inspired Molecular Redesign of a Multi-redox Catholyte for High-Energy Non-aqueous Organic Redox Flow Batteries journal October 2019
Poly(boron-dipyrromethene)—A Redox-Active Polymer Class for Polymer Redox-Flow Batteries journal May 2016