Redox Flow
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Modified Electrochemical Properties of Organic Quinoxaline via Electrolyte Interactions in Propylene Carbonate
Quinoxalines are highly sensitive to solvent and electrolyte interactions. For example, bare quinoxaline is active in acetonitrile at DFT-predicted potentials but is effectively dead in propylene carbonate. Electrochemical activation is achieved by addition of BF3-ligands. Read More
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Recent Developments and Trends in Redox Flow Batteries
The recent activity for redox flow batteries and semi-flow systems was compiled and reviewed in this work. Read More
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Accelerating Electrolyte Discovery for Energy Storage with High Throughput Screening
We have developed a strategy to down-select a pool of candidates based on successive property evaluations and to eliminate unpromising candidates at an early stage. Read More
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Liquid Catholyte Molecules for Non-aqueous Redox Flow Batteries
A new series of novel dimethoxybenzene based catholyte molecules were developed in order to further improve the solubility by tuning chemical structures Read More
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The Structure of Interfacial Water on Gold Electrodes Studied by X-ray Absorption Spectroscopy
First X-ray absorption measurement of electrolyte structure in vicinity of biased electrode Read More
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Predicting Electrochemical Windows of Nitrogen Containing Aromatic Molecules
A descriptive relationship is derived for computing reduction potentials of quinoxaline derivatives from the orbital energies of the neutral molecules without time-consuming free energy calculations Read More
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New concepts in Redox Flow: “Impact of Redox-Active Polymer Molecular Weight on the Electrochemical Properties and Transport Across Porous Separators in Nonaqueous Solvents”
Sized-based selective transport of supporting electrolyte across commercial Celgard porous separators is attainable by controlling the size of highly soluble (>2M) redox active polymers (RAPs) as storage material Read More
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Electroactive-Zone Extension in Flow-Battery Stacks
Flowable suspensions that conduct both electrons and ions can enable the use of energy-dense electroactive species in flow batteries Read More
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Pathways to Low-Cost Electrochemical Energy Storage: A Comparison of Aqueous and Nonaqueous Flow Batteries
First comprehensive determination of materials to system level performance and cost for nonaqueous and aqueous flow batteries for future and existing chemistries Read More
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Solubility and Mobility of Ionic Liquid-Derived Ferrocene in Carbonate Electrolytes for Non-Aqueous Redox Flow Batteries
A coupled experimental and computational study of the structure and mobility of ferrocene (Fc) and a derivitized Fc-based ionic compound (Fc1N112-TFSI, see figure for structure) reveals the differences at the molecular level that explain improved electrochemical behavior. Read More
Latest Updates
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You’re Invited - JCESR and Beyond: Translating the Basic Science of Batteries
Please join us at Argonne National Laboratory on Tuesday, April 4, 2023 for JCESR and Beyond: Translating the Basic Science of Batteries. Registration is now open. This in-person event will celebrate 10 years of research from the Joint Center… Read More
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A Message from JCESR: In Memory of George Crabtree
It is with heavy hearts that we say goodbye to George Crabtree, a Senior Scientist and Distinguished Fellow at Argonne National Laboratory, and Director of the Joint Center for Energy Storage Research (JCESR), who passed away unexpectedly on January 23. Dr. Read More
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Cyanopyridines As Extremely Low-Reduction-Potential Anolytes for Nonaqueous Redox Flow Batteries
Discovery of a cyanophenylpyridine derivative with a very low reduction potential and good stability during cycling. Read More
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Characterizing Redoxmer – Electrode Kinetics Using a SECM-Based Spot Analysis Method
Identified asymmetries in electron transfer (ET) kinetics between the reduction and oxidation of ferrocene-based redoxmers by measuring the ET rate constants (kf/kb) as a function of electrode potential. Read More
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Benzotriazoles as Low Potential Anolytes for Non-Aqueous Redox Flow Batteries
We developed an easy-to-synthesize benzotriazole-based anolyte with a high energy redox potential (-2.3 V vs Fc/Fc+) and high solubility that demonstrates stable electrochemical cycling performance. Read More