Elucidating instabilities contributing to capacity fade in bipyridine‐based materials for non‐aqueous flow batteries

2021 ◽  
Author(s):  
Claudina Kolesnichenko ◽  
Harry Pratt ◽  
Leo J Small ◽  
Travis Mark Anderson
Keyword(s):  
Capacity Fade ◽  
Flow Batteries ◽  
Aqueous Flow

scholarly journals Highly Stable Low Redox Potential Quinone for Aqueous Flow Batteries

2021 ◽  
Author(s):  
Min Wu ◽  
Meisam Bahari ◽  
Yan Jing ◽  
Kiana Amini ◽  
Eric Fell ◽  
...  
Keyword(s):  
Redox Potential ◽  
Large Scale ◽  
Open Circuit Voltage ◽  
Open Circuit ◽  
Single Step ◽  
Capacity Fade ◽  
Formation Reaction ◽  
Performance Improvements ◽  
Flow Batteries ◽  
Aqueous Flow

Aqueous organic redox flow batteries are promising candidates for large-scale energy storage. However, the design of stable and inexpensive electrolytes is challenging. Here, we report a highly stable, low redox potential, and potentially inexpensive negolyte species, sodium 3,3',3'',3'''-((9,10-anthraquinone-2,6-diyl)bis(azanetriyl))tetrakis(propane-1-sulfonate) (2,6-N-TSAQ), which is synthesized in a single step from inexpensive precursors. Pairing 2,6-N-TSAQ with potassium ferrocyanide at pH 14 yielded a battery with the highest open-circuit voltage, 1.14 V, of any anthraquinone-based cell with a capacity fade rate <10%/yr. When 2,6-N-TSAQ was cycled at neutral pH, it exhibited two orders of magnitude higher capacity fade rate. The great difference in anthraquinone cycling stability at different pH is interpreted in terms of the thermodynamics of the anthrone formation reaction. This work shows the great potential of organic synthetic chemistry for the development of viable flow battery electrolytes and demonstrates the remarkable performance improvements achievable with an understanding of decomposition mechanisms.

A subtractive approach to molecular engineering of dimethoxybenzene-based redox materials for non-aqueous flow batteries

2015 ◽  
Vol 3 (29) ◽  
pp. 14971-14976 ◽  
Author(s):  
Jinhua Huang ◽  
Liang Su ◽  
Jeffrey A. Kowalski ◽  
John L. Barton ◽  
Magali Ferrandon ◽  
...  
Keyword(s):  
High Capacity ◽  
Molecular Engineering ◽  
Active Materials ◽  
Redox Flow Batteries ◽  
Redox Active ◽  
Flow Batteries ◽  
Aqueous Flow

The development of new high capacity redox active materials is key to realizing the potential of non-aqueous redox flow batteries (RFBs).

Communication—Aliphatic Chain Substitution for Enhancing Energy Density of p-Benzoquinone Redox Couple for Non-Aqueous Flow Batteries

2020 ◽  
Vol 167 (2) ◽  
pp. 020551
Author(s):  
Hyun-seung Kim ◽  
Jeong Beom Lee ◽  
Ki Jae Kim ◽  
Ji Heon Ryu ◽  
Seung M. Oh
Keyword(s):  
Energy Density ◽  
Redox Couple ◽  
Aliphatic Chain ◽  
Flow Batteries ◽  
Aqueous Flow

scholarly journals On Lifetime and Cost of Redox-Active Organics for Aqueous Flow Batteries

2020 ◽  
Vol 5 (3) ◽  
pp. 879-884 ◽  
Author(s):  
Fikile R. Brushett ◽  
Michael J. Aziz ◽  
Kara E. Rodby
Keyword(s):  
Redox Active ◽  
Flow Batteries ◽  
Aqueous Flow

scholarly journals Mass Transfer and Reaction Kinetic Enhanced Electrode for High‐Performance Aqueous Flow Batteries

2019 ◽  
Vol 29 (43) ◽  
pp. 1903192 ◽  
Author(s):  
Alolika Mukhopadhyay ◽  
Yang Yang ◽  
Yifan Li ◽  
Yong Chen ◽  
Hongyan Li ◽  
...  
Keyword(s):  
Mass Transfer ◽  
High Performance ◽  
Reaction Kinetic ◽  
Flow Batteries ◽  
Aqueous Flow

scholarly journals Assessing the levelized cost of vanadium redox flow batteries with capacity fade and rebalancing

2020 ◽  
Vol 460 ◽  
pp. 227958 ◽  
Author(s):  
Kara E. Rodby ◽  
Thomas J. Carney ◽  
Yasser Ashraf Gandomi ◽  
John L. Barton ◽  
Robert M. Darling ◽  
...  
Keyword(s):  
Capacity Fade ◽  
Redox Flow Batteries ◽  
Levelized Cost ◽  
Flow Batteries ◽  
Vanadium Redox

Differential pH as a method for increasing cell potential in organic aqueous flow batteries

2017 ◽  
Vol 5 (41) ◽  
pp. 21875-21882 ◽  
Author(s):  
Amirreza Khataee ◽  
Kristina Wedege ◽  
Emil Dražević ◽  
Anders Bentien
Keyword(s):  
Cell Voltage ◽  
Stable Operation ◽  
Flow Battery ◽  
Cell Potential ◽  
Flow Batteries ◽  
Aqueous Flow

A semi-organic, differential pH flow battery with increased cell voltage shows stable operation for at least 30 days.

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