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Near Neutral pH Redox Flow Battery with Low Permeability and Long-Lifetime Phosphonated Viologen Active Species

Journal Article · · Advanced Energy Materials
 [1];  [2];  [2];  [3];  [3];  [2];  [2]
  1. Harvard Univ., Cambridge, MA (United States). John A. Paulson School of Engineering and Applied Sciences; Harvard John A. Paulson School of Engineering and Applied Sciences
  2. Harvard Univ., Cambridge, MA (United States). John A. Paulson School of Engineering and Applied Sciences
  3. Harvard Univ., Cambridge, MA (United States)
A highly stable phosphonate-functionalized viologen is introduced in this work as the redox-active material in a negative potential electrolyte for aqueous redox flow batteries (ARFBs) operating at nearly neutral pH. The solubility is 1.23 m and the reduction potential is the lowest of any substituted viologen utilized in a flow battery, reaching –0.462 V versus SHE at pH = 9. The negative charges in both the oxidized and the reduced states of 1,1'-bis(3-phosphonopropyl)-[4,4'-bipyridine]-1,1'-diium dibromide (BPP–Vi ) effect low permeability in cation exchange membranes and suppress a bimolecular mechanism of viologen decomposition. A flow battery pairing BPP–Vi with a ferrocyanide-based positive potential electrolyte across an inexpensive, non-fluorinated cation exchange membrane at pH = 9 exhibits an open-circuit voltage of 0.9 V and a capacity fade rate of 0.016% per day or 0.00069% per cycle. Overcharging leads to viologen decomposition, causing irreversible capacity fade. Our research introduces extremely stable, extremely low-permeating and low reduction potential redox active materials into near neutral ARFBs.
Research Organization:
Harvard Univ., Cambridge, MA (United States); Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
National Science Foundation (NSF); USDOE
Contributing Organization:
Massachusetts Clean Energy Center
Grant/Contract Number:
AC05-76RL01830
OSTI ID:
1608418
Alternate ID(s):
OSTI ID: 1608377
Journal Information:
Advanced Energy Materials, Journal Name: Advanced Energy Materials Journal Issue: 20 Vol. 10; ISSN 1614-6832
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

References (25)

A Total Organic Aqueous Redox Flow Battery Employing a Low Cost and Sustainable Methyl Viologen Anolyte and 4-HO-TEMPO Catholyte journal December 2015
Alkaline Benzoquinone Aqueous Flow Battery for Large-Scale Storage of Electrical Energy journal December 2017
A Phosphonate‐Functionalized Quinone Redox Flow Battery at Near‐Neutral pH with Record Capacity Retention Rate journal January 2019
Redox-Flow Batteries: From Metals to Organic Redox-Active Materials journal November 2016
An Aqueous Redox-Flow Battery with High Capacity and Power: The TEMPTMA/MV System journal October 2016
Radiolytically-induced one-electron reduction of methyl viologen in aqueous solution journal January 1984
Designer Two-Electron Storage Viologen Anolyte Materials for Neutral Aqueous Organic Redox Flow Batteries journal December 2017
Alkaline Quinone Flow Battery with Long Lifetime at pH 12 journal September 2018
Unprecedented Capacity and Stability of Ammonium Ferrocyanide Catholyte in pH Neutral Aqueous Redox Flow Batteries journal January 2019
Unraveling pH dependent cycling stability of ferricyanide/ferrocyanide in redox flow batteries journal December 2017
A Neutral pH Aqueous Organic–Organometallic Redox Flow Battery with Extremely High Capacity Retention journal February 2017
A Sulfonate-Functionalized Viologen Enabling Neutral Cation Exchange, Aqueous Organic Redox Flow Batteries toward Renewable Energy Storage journal February 2018
A Water-Miscible Quinone Flow Battery with High Volumetric Capacity and Energy Density journal May 2019
Molecular Engineering of an Alkaline Naphthoquinone Flow Battery journal July 2019
Status and Prospects of Organic Redox Flow Batteries toward Sustainable Energy Storage journal August 2019
Flow Batteries: Current Status and Trends journal September 2015
Long-Cycling Aqueous Organic Redox Flow Battery (AORFB) toward Sustainable and Safe Energy Storage journal January 2017
A metal-free organic–inorganic aqueous flow battery journal January 2014
A 1.51 V pH neutral redox flow battery towards scalable energy storage journal January 2019
Electricity storage for intermittent renewable sources journal January 2012
Electrical Energy Storage for the Grid: A Battery of Choices journal November 2011
Alkaline quinone flow battery journal September 2015
The irreversible momentum of clean energy journal January 2017
Flow Battery Molecular Reactant Stability Determined by Symmetric Cell Cycling Methods journal January 2018
Communication—Sulfonated Poly (ether ether ketone) as Cation Exchange Membrane for Alkaline Redox Flow Batteries journal January 2018

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