Highly Stable Low Redox Potential Quinone for Aqueous Flow Batteries

2022 ◽  
Author(s):  
Min Wu ◽  
Meisam Bahari ◽  
Yan Jing ◽  
Kiana Amini ◽  
Eric M. Fell ◽  
...  
Keyword(s):  
Redox Potential ◽  
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.

Theoretical Exploration of 2,2’-Bipyridines as Electro-Active Compounds in Flow Batteries

2019 ◽  
Author(s):  
Mariano Sánchez-Castellanos ◽  
Martha M. Flores-Leonar ◽  
Zaahel Mata-Pinzón ◽  
Humberto G. Laguna ◽  
Karl García-Ruiz ◽  
...  
Keyword(s):  
Redox Potential ◽  
Active Material ◽  
Chemical Properties ◽  
Small Subset ◽  
Solubility In Water ◽  
Protonation Reaction ◽  
Redox Active ◽  
Physico Chemical ◽  
Pka Value ◽  
Flow Batteries

Compounds from the 2,2’-bipyridine molecular family were investigated for use as redox-active materials in organic flow batteries. For 156 2,2’-bipyridine derivatives reported in the academic literature, we calculated the redox potential, the pKa for the first protonation reaction, and the solubility in aqueous solutions. Using experimental data on a small subset of derivatives, we were able to calibrate our calculations. We find that functionalization with electron-withdrawing groups leads to an increase of the redox potential and to an increase of the molecular acidity (as expressed in a reduction of the pKa value for the first protonation step). Furthermore, calculations of solubility in water indicate that some of the studied derivatives have adequate solubility for flow battery applications. Based on an analysis of the physico-chemical properties of the 156 studied compounds, we down-select five molecules with carbonyl- and nitro-based functional groups, whose parameters are especially promising for potential application as negative redox-active material inorganic flow batteries.

Theoretical Exploration of 2,2’-Bipyridines as Electro-Active Compounds in Flow Batteries

2019 ◽  
Author(s):  
Mariano Sánchez-Castellanos ◽  
Martha M. Flores-Leonar ◽  
Zaahel Mata-Pinzón ◽  
Humberto G. Laguna ◽  
Karl García-Ruiz ◽  
...  
Keyword(s):  
Redox Potential ◽  
Active Material ◽  
Chemical Properties ◽  
Small Subset ◽  
Solubility In Water ◽  
Protonation Reaction ◽  
Redox Active ◽  
Physico Chemical ◽  
Pka Value ◽  
Flow Batteries

Compounds from the 2,2’-bipyridine molecular family were investigated for use as redox-active materials in organic flow batteries. For 156 2,2’-bipyridine derivatives reported in the academic literature, we calculated the redox potential, the pKa for the first protonation reaction, and the solubility in aqueous solutions. Using experimental data on a small subset of derivatives, we were able to calibrate our calculations. We find that functionalization with electron-withdrawing groups leads to an increase of the redox potential and to an increase of the molecular acidity (as expressed in a reduction of the pKa value for the first protonation step). Furthermore, calculations of solubility in water indicate that some of the studied derivatives have adequate solubility for flow battery applications. Based on an analysis of the physico-chemical properties of the 156 studied compounds, we down-select five molecules with carbonyl- and nitro-based functional groups, whose parameters are especially promising for potential application as negative redox-active material inorganic flow batteries.

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).

N-ferrocenylphthalimide; A single redox couple formed by attaching a ferrocene moiety to phthalimide for non-aqueous flow batteries

2018 ◽  
Vol 395 ◽  
pp. 60-65 ◽  
Author(s):  
Seunghae Hwang ◽  
Hyun-seung Kim ◽  
Ji Heon Ryu ◽  
Seung M. Oh
Keyword(s):  
Redox Couple ◽  
Flow Batteries ◽  
Aqueous Flow

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
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