Multivalent Intercalation
-
Simulations of Anodic Nanopore Growth Using the Smoothed Boundary and Level Set Methods
A new numerical approach for simulating the growth of nanopores during the anodization (electrochemical oxidation) of aluminum was developed, allowing the multidimensional extension of a successful one-dimensional model with a series of interfacial. Simulations indicate that anions adsorbed to the alumina surface play a significant role in the growth and morphology of the nanopores. Read More
-
Computational Examination of Orientation-Dependent Morphological Evolution during the Electrodeposition and Electrodissolution of Magnesium
A new model of electrodeposition was developed that includes crucial phenomena required to simulate Mg battery anode cycling and yields results that are consistent with experimental observations. Read More
-
Reversible Magnesium Intercalation into a Layered Oxyfluoride Cathode
Magnesium was reversibly intercalated at room temperature into an oxyfluoride cathode without the co-intercalation of electrolytes or protons and without the formation of unwanted side-products that commonly plague oxide cathodes. Read More
-
Phase-Controlled Electrochemical Activity of Epitaxial Spinel Thin films as Mg-Cathodes
Epitaxial thin film cathodes of MgMn2O4 (“MMO”) are stabilized in two distinct phases (tetragonal vs. cubic) which reveal distinct electrochemical activities for reversible Mg2+ insertion. Read More
-
The First Ca-ion Rechargeable Battery
We have demonstrated the first ever rechargeable battery utilizing calcium as the working ion. Read More
-
Current Collector Corrosion in Ca-Ion Batteries
This study identified and verified corrosion of the metallic current collectors in a series of multivalent electrolyte/electrode systems; calcium based systems were shown to be particularly susceptible to corrosion. Read More
-
Demonstration of Magnesium Intercalation into a High-Voltage Oxide Electrode
First demonstration of reversible insertion of multivalent magnesium ions (Mg2+) into a spinel-type manganese oxide (Mn2O4), using multi-modal characterization Read More
-
Understanding the Initial Stages of Reversible Mg Deposition and Stripping in Inorganic Nonaqueous Electrolytes
The chemical species at the Mg-anode surface in the presence of Magnesium Aluminum-Chloro complex (MACC) electrolyte were identified. While solvent molecules (THF and DME) are loosely bound at the Mg(0001) surface, the constituents of the MACC electrolyte (e.g. MgCl+, see diagram) are strongly anchored at the electrode. Read More
-
A Lewis Acid-free and Phenolate-based Magnesium Electrolyte for Rechargeable Magnesium Batteries
A novel Lewis acid-free all magnesium electrolyte containing 2,6-di-tert-butylphenoxidemagnesium chloride ((DTBP)MgCl + MgCl2) has been deliberately developed. The obtained electrolyte possesses the oxidative stability of up to 2.3 V (vs Mg/Mg2+) with 100% coulombic efficiency, which is comparable to its AlCl3 counterpart. Read More
-
Electrolyte Genome Reveals New Instability Mechanism in Mg Electrolytes
imulations of a matrix of Mg salt and solvent combinations revealed a strong tendency to ion pair formation. Close association of the salt anion and cation within the first solvation shell, even at modest concentrations. Read More
Latest Updates
-
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
-
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
-
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
-
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
-
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