Multivalent Intercalation
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The Unexpected Discovery of the Mg(HMDS)2/MgCl2 Complex as a Magnesium Electrolyte for Rechargeable Magnesium Batteries
A simple mixture of magnesium compounds: magnesium hexamethyldisilazide (Mg(HMDS)2) and magnesium chloride (MgCl2) was prepared to achieve reversible Mg deposition/dissolution, a wide electrochemical window, and a coulombic efficiency of 99%. Read More
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A Fundamental Study on the [(μ-Cl)3Mg2(THF)6]+ Dimer Electrolytes for Rechargeable Mg Batteries
First characterization of the long-sought [MgCl]+ species of the [(μ-Cl)3Mg2(THF)6]+ dimer electrolytes using a soft mass spectrometry, Subambient Pressure Ionization with Nanoelectrospray Mass spectrometry (SPIN-MS) Read More
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Realizing the Full Potential of Insertion Anodes for Mg-ion Batteries Through the Nano-Structuring of Sn
High resolution STEM and Density Functional Theory were used in tandem to analyze the performance of SbSn anodes for Mg-ion batteries, shedding light on transport mechanisms and transport limitations of Mg2+ ions in the structure Read More
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Spinel Compounds as Multivalent Battery Cathodes: A Systematic Evaluation Based on ab initio Calculations
A high-throughput strategy to systematically screen multivalent cathode materials based on comprehensive computational first-principles property evaluations has been developed and has been used to identify Mn2O4 as a feasible host candidate, with Ca2+ and possibly Mg2+ as mobile cations Read More
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Understanding the Structural and Electronic Evolution of Li2MnO3 During Electron Irradiation Via Electron Microscopy
Electrochemical cycling induces irreversible changes to the oxide structure such as Li/O evolution and crystal rearrangements Read More
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Imaging Heterogeneous Ion Transfer: Lithium Ion Quantification using Mercury Amalgams as In Situ Electrochemical Probes in Nonaqueous Media
Quantitative electrochemical probes for the in situ detection of reactive fluxes of alkaline ions in non-aqueous media were developed Read More
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Electrochemistry of Magnesium Electrolytes in Ionic Liquids for Secondary Batteries
Ionic liquids (ILs) have wide electrochemical stability windows, low vapor pressures, and low flammabilities, making them attractive as replacements for conventional organic solvents like THF and DME Read More
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The Solvation Structure of Mg Ions in Dichloro Complex Solutions from First-Principles Molecular Dynamics and Simulated X‑ray Absorption Spectra
Molecular details of Mg ion solvation in a proven electrolyte explored with ab initio molecular dynamics Read More
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Realizing the Electrolyte Genome
JCESR is building a highly sophisticated infrastructure for high-throughput evaluation of molecular properties. This involves coupling ab initio DFT methods with rapid classic molecular dynamics, calculations of redox potentials, and solvation structure while more detailed reactivity studies are carried out. Candidates that meet performance metrics for different types of battery applications (redox-flow, Li-air, Li-sulfur and multivalent) are prioritized for synthesis and testing. Read More
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Designing Solvation in Magnesium Electrolytes
Multivalent salts are prone to ion-pair formation in many solvents, particularly the glymes that provide stability at metal anode Read More
Latest Updates
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JCESR Concludes Decade-Long Mission, Leaves Lasting Impact on Battery Science
The official end of the Joint Center for Energy Storage Research (JCESR) innovation hub occurred in June 2023 after more than a decade of research and development dedicated to one of humanity’s most pressing challenges: the development of a better battery to help usher in… Read More
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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
