Symmetric, Robust, and High-voltage Organic Redox Flow Battery Model Based on a Helical Carbenium Ion Electrolyte

2020 ◽  
Author(s):  
Jules Moutet ◽  
Jose M Veleta ◽  
thomas Gianetti
Keyword(s):  
Open Circuit Potential ◽  
Open Circuit ◽  
Kinetic Properties ◽  
Redox Flow Battery ◽  
Flow Battery ◽  
Capacity Retention ◽  
Battery Model ◽  
Redox Active ◽  
Carbenium Ion ◽  
Scale Integration

Redox flow batteries (RFBs) represent a promising technology for grid-scale integration of renewable energy. Redox-active molecular pairs with large potential windows have been identified as key components of these systems. However, cross-contamination problems encountered by the use of different catholyte and anolyte species still limits the development of reliable organic RFBs. Herein, we report the first use of a helical carbenium ion, with three stable oxidation states, as electrolyte for the development of symmetric cells. Cyclic voltammo-amperometric studies were conducted in acetonitrile to assess the essential kinetic properties for flow battery performance and cycling stability of this molecule. The selected [4]helicenium ion was then evaluated by using mono- and bi-electronic cycling experiments, resulting in 745 and 80 cycles respectively, with near-perfect capacity retention. This helical carbenium ion based electrolyte achieved a proof-of-principle 2.12 V open circuit potential as an all-organic symmetric RFB.<br>

scholarly journals Symmetric, Robust, and High-voltage Organic Redox Flow Battery Model Based on a Helical Carbenium Ion Electrolyte

2020 ◽  
Author(s):  
Jules Moutet ◽  
Jose M Veleta ◽  
thomas Gianetti
Keyword(s):  
Open Circuit Potential ◽  
Open Circuit ◽  
Kinetic Properties ◽  
Redox Flow Battery ◽  
Flow Battery ◽  
Capacity Retention ◽  
Battery Model ◽  
Redox Active ◽  
Carbenium Ion ◽  
Scale Integration

Redox flow batteries (RFBs) represent a promising technology for grid-scale integration of renewable energy. Redox-active molecular pairs with large potential windows have been identified as key components of these systems. However, cross-contamination problems encountered by the use of different catholyte and anolyte species still limits the development of reliable organic RFBs. Herein, we report the first use of a helical carbenium ion, with three stable oxidation states, as electrolyte for the development of symmetric cells. Cyclic voltammo-amperometric studies were conducted in acetonitrile to assess the essential kinetic properties for flow battery performance and cycling stability of this molecule. The selected [4]helicenium ion was then evaluated by using mono- and bi-electronic cycling experiments, resulting in 745 and 80 cycles respectively, with near-perfect capacity retention. This helical carbenium ion based electrolyte achieved a proof-of-principle 2.12 V open circuit potential as an all-organic symmetric RFB.<br>

Symmetric, Robust, and High-voltage Organic Redox Flow Battery Model Based on a Helical Carbenium Ion Electrolyte

2020 ◽  
Author(s):  
Jules Moutet ◽  
Jose M Veleta ◽  
thomas Gianetti
Keyword(s):  
Open Circuit Potential ◽  
Open Circuit ◽  
Kinetic Properties ◽  
Redox Flow Battery ◽  
Flow Battery ◽  
Capacity Retention ◽  
Battery Model ◽  
Redox Active ◽  
Carbenium Ion ◽  
Scale Integration

Redox flow batteries (RFBs) represent a promising technology for grid-scale integration of renewable energy. Redox-active molecular pairs with large potential windows have been identified as key components of these systems. However, cross-contamination problems encountered by the use of different catholyte and anolyte species still limits the development of reliable organic RFBs. Herein, we report the first use of a helical carbenium ion, with three stable oxidation states, as electrolyte for the development of symmetric cells. Cyclic voltammo-amperometric studies were conducted in acetonitrile to assess the essential kinetic properties for flow battery performance and cycling stability of this molecule. The selected [4]helicenium ion was then evaluated by using mono- and bi-electronic cycling experiments, resulting in 745 and 80 cycles respectively, with near-perfect capacity retention. This helical carbenium ion based electrolyte achieved a proof-of-principle 2.12 V open circuit potential as an all-organic symmetric RFB.<br>

scholarly journals Increased Performance of an All-Organic Redox Flow Battery Model by Nitration of the [4]Helicenium DMQA Ion Electrolyte

2021 ◽  
Author(s):  
Jules Moutet ◽  
David Mills ◽  
Md Mubarak Hossain ◽  
Thomas L. Gianetti
Keyword(s):  
Energy Storage ◽  
Large Scale ◽  
Organic Molecules ◽  
Redox Flow Battery ◽  
Flow Battery ◽  
Redox Flow Batteries ◽  
Battery Model ◽  
Recent Advances ◽  
Redox Active ◽  
Scalable Design

Redox Flow Batteries (RFBs) through their scalable design and virtually unlimited capacity, are promising candidates for large-scale energy storage. While recent advances in the development of redox-active bipolar organic molecules...

All-PEGylated redox-active metal-free organic molecules in non-aqueous redox flow battery

2020 ◽  
Vol 8 (31) ◽  
pp. 15715-15724 ◽  
Author(s):  
Jingchao Chai ◽  
Amir Lashgari ◽  
Xiao Wang ◽  
Caroline K. Williams ◽  
Jianbing “Jimmy” Jiang
Keyword(s):  
Organic Molecules ◽  
Redox Flow Battery ◽  
Flow Battery ◽  
Active Materials ◽  
Metal Free ◽  
Redox Active ◽  
Active Metal ◽  
Molecular Sizes ◽  
The Stability ◽  
Redox Active Metal

A non-aqueous redox flow battery based on all-PEGylated, metal-free compounds is presented. The PEGylation enhances the stability of the redox-active materials, alleviating crossover by increasing the anolyte and catholyte species’ molecular sizes.

Kinetic Properties of Aqueous Organic Redox Flow Battery Anolytes Using the Marcus–Hush Theory

2020 ◽  
Vol 3 (9) ◽  
pp. 8833-8841 ◽  
Author(s):  
Eduardo Martínez-González ◽  
Humberto G. Laguna ◽  
Mariano Sánchez-Castellanos ◽  
Sergio S. Rozenel ◽  
Víctor M. Ugalde-Saldivar ◽  
...  
Keyword(s):  
Kinetic Properties ◽  
Redox Flow Battery ◽  
Flow Battery

Improved radical stability of viologen anolytes in aqueous organic redox flow batteries

2018 ◽  
Vol 54 (50) ◽  
pp. 6871-6874 ◽  
Author(s):  
Bo Hu ◽  
Yijie Tang ◽  
Jian Luo ◽  
Grant Grove ◽  
Yisong Guo ◽  
...  
Keyword(s):  
Power Density ◽  
Redox Flow Battery ◽  
Flow Battery ◽  
Capacity Retention ◽  
Redox Flow Batteries ◽  
Flow Batteries

A 1.38 V aqueous organic redox flow battery demonstrated 97.48% capacity retention for 500 cycles and 128 mW cm−2 power density.

scholarly journals Novel Anion Exchange Membrane Based on Poly(Pentafluorostyrene) Substituted with Mercaptotetrazole Pendant Groups and Its Blend with Polybenzimidazole for Vanadium Redox Flow Battery Applications

Polymers ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 915
Author(s):  
Hyeongrae Cho ◽  
Vladimir Atanasov ◽  
Henning M. Krieg ◽  
Jochen A. Kerres
Keyword(s):  
Anion Exchange ◽  
Open Circuit ◽  
Vanadium Redox Flow Battery ◽  
Anion Exchange Membranes ◽  
Redox Flow Battery ◽  
Flow Battery ◽  
Blend Membranes ◽  
Performance Results ◽  
Exchange Membrane ◽  
Vanadium Redox

In order to evaluate the performance of the anion exchange membranes in a vanadium redox flow battery, a novel anion exchange polymer was synthesized via a three step process. Firstly, 1-(2-dimethylaminoethyl)-5-mercaptotetrazole was grafted onto poly(pentafluorostyrene) by nucleophilic F/S exchange. Secondly, the tertiary amino groups were quaternized by using iodomethane to provide anion exchange sites. Finally, the synthesized polymer was blended with polybenzimidazole to be applied in vanadium redox flow battery. The blend membranes exhibited better single cell battery performance in terms of efficiencies, open circuit voltage test and charge-discharge cycling test than that of a Nafion 212 membrane. The battery performance results of synthesized blend membranes suggest that those novel anion exchange membranes are promising candidates for vanadium redox flow batteries.

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