Research Highlights
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Unified Platform for Ion Transport in Inorganic Glasses, Polymers and Composite Solid Electrolytes
In this review paper, ion transport parameters in seemingly different solid electrolytes – glasses, polymers, and composites - were presented on a unified platform. Read More
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Diquat Anolytes for Sustainable Use of Grid-Scale Aqueous Redox Flow Batteries
Diquats are shown to be exceptionally stable anolyte (negative charge storing) materials for aqueous redox flow batteries (RFBs) having low redox potentials, extremely stable reduced states, and outstanding electrochemical cycling performance (>1,000 cycles with 0.016% capacity loss per cycle). Read More
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Importance of Hybrid DFT Functionals for Analysis of Multivalent Ion Mobility in Advanced Cathodes
Highlights the specific importance of the use of more accurate hybrid DFT functionals when exploring the diffusion of Mg ions within α-MoO3, a potential cathode material for multivalent ions. Recommends using computationally more demanding but likely more accurate hybrid DFT in future studies of ion diffusion in transition metal oxide cathodes. Read More
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Role of Structural Hydroxyl Groups in Enhancing Performance of Electrochemically-Synthesized Bilayer V2O5
Structural OH species, an intrinsic feature of electrochemically-synthesized V2O5 (EC-V2O5), are highly thermally and electrochemically stable and are responsible for the improved cycle life and reversible capacity of these materials for beyond-lithium-ion systems. Read More
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Comparing Calendar and Cycle Life Stability of Redox Active Organic Molecules for Nonaqueous Redox Flow Batteries
Cycle and calendar lives are chemical stability metrics that reflect two regimes of redox flow battery use: (i) continuous charge/discharge cycling and (ii) long-term charge storage in external tanks. Here we examine how these two performance metrics are related to each other for negative charge carriers (anolytes) in nonaqueous flow cells. Surprisingly, little correlation was found between these two practically important metrics. Read More
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Evaluation and Refinement of the General AMBER Force Field (GAFF) for Nineteen Organic Electrolyte Solvents
Two efficient optimization methods to develop better parameters for simulating battery electrolytes are described. These new parameters enable one to obtain better agreement with experimental values for key properties such as dielectric constant. Read More
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Tuning Lithium-Sulfur Battery Electrolytes for Improved Performance
The electrolyte of the lithium-sulfur (Li-S) battery was tuned to both overcome the need for a high electrolyte/sulfur ratio and inhibit the lithium dendrite growth on the anode at the same time. Read More
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Rational Design of Stable Multivalent Electrolytes and Interphases
Demonstrated a strategy for expanding the electrochemical stability window for magnesium batteries through predictive anion design while discovering new mechanisms of interphase formation. Read More
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Real-Time Monitoring of Cation Dissolution/Deintercalation Kinetics from Transition-Metal Oxides in Organic Environments
A new method that allows in situ, real-time monitoring of dissolution rates of transition metal cations from oxide cathode hosts, as well as monitoring of deintercalation of the working cation (Li, Mg, Zn, etc.) simultaneously with electrochemical cycling. Read More
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Quantifying the Impact of Viscosity on Mass-transfer Coefficients in Redox Flow Batteries
A methodology for and the results from quantification of the mass-transfer coefficient is demonstrated in the single-electrolyte configuration of JCESR’s Gen-2 cell using a model redox-active electrolyte (RAE) with a tunable viscosity. 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