scholarly journals Enhancing the solubility of 1,4-diaminoanthraquinones in electrolytes for organic redox flow batteries through molecular modification

RSC Advances ◽  
2020 ◽  
Vol 10 (65) ◽  
pp. 39601-39610
Author(s):  
Pieter Geysens ◽  
Jorik Evers ◽  
Wim Dehaen ◽  
Jan Fransaer ◽  
Koen Binnemans
Keyword(s):  
Side Chains ◽  
Organic Electrolytes ◽  
Molecular Modification ◽  
Redox Flow Batteries ◽  
Redox Active ◽  
Flow Batteries

The redox-active 1,4-diaminoanthraquinone structure was modified with several side chains in order to increase the solubility in organic electrolytes for redox flow batteries.

scholarly journals Designing for conjugate addition: an amine functionalised quinone anolyte for redox flow batteries

2021 ◽  
Author(s):  
Rajesh Bharat Jethwa ◽  
Evan Wenbo Zhao ◽  
Rachel N. Kerber ◽  
Erlendur Jónsson ◽  
Dominic S Wright ◽  
...  
Keyword(s):  
Energy Density ◽  
Storage Systems ◽  
Conjugate Addition ◽  
High Energy ◽  
Emerging Technology ◽  
High Energy Density ◽  
Organic Electrolytes ◽  
Redox Flow Batteries ◽  
Flow Batteries ◽  
Grid Level

Redox flow batteries (RFBs) are promising grid-level electrical storage systems. The key to this emerging technology is the development of cheap, highly soluble, and high energy-density inorganic and organic electrolytes....

scholarly journals Electrocatalysts for Using Renewably-Sourced, Organic Electrolytes for Redox Flow Batteries

Catalysts ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 315
Author(s):  
Robert S. Weber
Keyword(s):  
Reaction Rates ◽  
High Potential ◽  
Organic Electrolytes ◽  
Redox Flow Batteries ◽  
Organic Electrochemistry ◽  
Flow Batteries ◽  
Redox Shuttles ◽  
Episodic Nature

Biomass could be a source of the redox shuttles that have shown promise for operation as high potential, organic electrolytes for redox flow batteries. There is a sufficient quantity of biomass to satisfy the growing demand to buffer the episodic nature of renewably produced electricity. However, despite a century of effort, it is still not evident how to use existing information from organic electrochemistry to design the electrocatalysts or supporting electrolytes that will confer the required activity, selectivity and longevity. In this research, the use of a fiducial reaction to normalize reaction rates is shown to fail.

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).

TEMPO/Phenazine Combi-Molecule: A Redox-Active Material for Symmetric Aqueous Redox-Flow Batteries

2016 ◽  
Vol 1 (5) ◽  
pp. 976-980 ◽  
Author(s):  
Jan Winsberg ◽  
Christian Stolze ◽  
Simon Muench ◽  
Ferenc Liedl ◽  
Martin D. Hager ◽  
...  
Keyword(s):  
Active Material ◽  
Redox Flow Batteries ◽  
Redox Active ◽  
Flow Batteries

Redox-Active Inorganic Materials for Redox Flow Batteries

2019 ◽  
pp. 1-25 ◽  
Author(s):  
Bo Hu ◽  
Jian Luo ◽  
Camden DeBruler ◽  
Maowei Hu ◽  
Wenda Wu ◽  
...  
Keyword(s):  
Inorganic Materials ◽  
Redox Flow Batteries ◽  
Redox Active ◽  
Flow Batteries

scholarly journals Redox‐Flow Batteries: From Metals to Organic Redox‐Active Materials

2016 ◽  
Vol 56 (3) ◽  
pp. 686-711 ◽  
Author(s):  
Jan Winsberg ◽  
Tino Hagemann ◽  
Tobias Janoschka ◽  
Martin D. Hager ◽  
Ulrich S. Schubert
Keyword(s):  
Active Materials ◽  
Redox Flow Batteries ◽  
Redox Active ◽  
Flow Batteries

Synthesis and Characterization of a Phthalimide-Containing Redox-Active Polymer for High-Voltage Polymer-Based Redox-Flow Batteries

2017 ◽  
Vol 219 (4) ◽  
pp. 1700267 ◽  
Author(s):  
Jan Winsberg ◽  
Stefan Benndorf ◽  
Andreas Wild ◽  
Martin D. Hager ◽  
Ulrich S. Schubert
Keyword(s):  
High Voltage ◽  
Synthesis And Characterization ◽  
Redox Flow Batteries ◽  
Redox Active ◽  
Flow Batteries

scholarly journals Too Much of a Good Thing? Assessing Performance Tradeoffs of Two-Electron Compounds for Redox Flow Batteries

2021 ◽  
Author(s):  
Bertrand Neyhouse ◽  
Alexis Fenton Jr ◽  
Fikile Brushett
Keyword(s):  
Electron Transfer ◽  
Systems Engineering ◽  
Mass Transfer Rate ◽  
Electrode Polarization ◽  
Redox Potentials ◽  
Electron Transfer Mechanism ◽  
Redox Flow Batteries ◽  
Redox Active ◽  
Flow Batteries ◽  
Electron Compounds

<p>Engineering redox-active compounds to support stable multi-electron transfer is an emerging strategy for enhancing the energy density and reducing the cost of redox flow batteries (RFBs). However, when sequential electron transfers occur at disparate redox potentials, increases in electrolyte capacity are accompanied by decreases in voltaic efficiency, restricting the viable design space. To understand these performance tradeoffs for two-electron compounds specifically, we apply theoretical models to investigate the influence of the electron transfer mechanism and redox-active species properties on galvanostatic processes. First, we model chronopotentiometry at a planar electrode to understand how the electrochemical response and associated concentration distributions depend on thermodynamic, kinetic, and mass transport factors. Second, using a zero-dimensional galvanostatic charge / discharge model, we assess the effects of these key descriptors on performance for a single half-cell. Specifically, we examine how different properties (i.e., average of the two redox potentials, difference between the two redox potentials, charging rate, mass transfer rate, and comproportionation rate) affect the electrode polarization and voltaic efficiency. Finally, we extend the galvanostatic model to include two-electron compounds in both half-cells, demonstrating compounding voltage losses for a full cell. These results evince limitations to the applicability of multi-electron compounds—as such, we suggest new directions for molecular and systems engineering that may improve the prospects of these materials within RFBs.<b></b></p>

scholarly journals Substituted thiadiazoles as energy-rich anolytes for nonaqueous redox flow cells

2018 ◽  
Vol 6 (15) ◽  
pp. 6251-6254 ◽  
Author(s):  
Jinhua Huang ◽  
Wentao Duan ◽  
Jingjing Zhang ◽  
Ilya A. Shkrob ◽  
Rajeev S. Assary ◽  
...  
Keyword(s):  
Organic Molecules ◽  
Structure Property ◽  
Flow Cells ◽  
Redox Flow Batteries ◽  
Structure Property Relationships ◽  
Redox Active ◽  
Flow Batteries ◽  
Redox Flow Cells

Understanding structure–property relationships is essential for designing energy-rich redox active organic molecules (ROMs) for all-organic redox flow batteries.

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