Research Highlights
-
Enhanced Charge Transport in Dissolved Polysulfide Li-S Cells with Supramolecular Redox Mediators
A highly collaborative team of theorists and experimentalists identified a nanostructured redox mediator for soluble polysulfides, synthesized the target compound, electrochemically validate the computations, and demonstrated enhanced current in redox mediated Li-S cells. Read More
-
Improved Cycle Life and Stability of Lithium Metal Anodes through Ultrathin ALD Surface Treatments
Li metal foil electrodes treated with ultrathin (~2nm) Al2O3 layers, using Atomic Layer Deposition (ALD), prevent dendrite formation and double the lifetime of the anode before failure under both, galvanostatic deep discharge conditions and cyclic plating/stripping of symmetric Li-Li cells. Read More
-
Spectrometric Determination of Molecular Structural Evolution at the Solid Electrolyte Interphase in Lithium-Ion Batteries
Deposition of Li metal on copper electrode leads to condensation of solvent molecules around the electrode. Chemically, this layer of solvent condensate tends to be depleted of the salt anions and have reduced concentration of Li+ ions, essentially leading to formation of a lean electrolyte layer adjacent to the electrode and therefore contributing to the cell overpotential. Read More
-
Polysulfide-Blocking Polymer Membrane for Li-S Batteries
olymers of Intrinsic Microporosity are harnessed as an ion-selective membrane, effectively blocking polysulfide crossover due to its microporous molecular-sieving network. Read More
-
Estimating the System Price of Redox Flow Batteries for Grid Storage
This work conducted a techno-economic analysis of a prospective production process for an aqueous all vanadium flow battery and a nonaqueous lithium polysulfide flow battery. Read More
-
Reliable Viscosity Calculation from Equilibrium Molecular Dynamics Simulations: A Time Decomposition Method
An equilibrium molecular dynamics-based computational method is developed and tested for the reliable calculation of viscosity. Read More
-
A Subtractive Approach to Molecular Engineering of Dimethoxybenzene-based Redox Materials for Nonaqueous Flow Batteries
A series of methyl-substituted 1,4-dimethoxybenzene derivatives were developed via a subtractive design approach through reengineering of DBBB. 23DDB and 25DDB demonstrated desirable electrochemical and physical characteristics for nonaqueous redox flow batteries with intrinsic capacities at 161 mAh/g. Read More
-
Solvation Structure and Transport Properties of Alkali Cations in Dimethyl Sulfoxide Under Exogenous Static Electric Fields
To predict the behavior of battery electrolyte components, we investigated the role of exogenous electric fields on the solvation structure and dynamics of alkali ions in dimethyl sulfoxide (DMSO). Read More
-
Chemical Doping Enhances Electronic Transport in Networks of Hexabenzocoronenes Assembles in Electrolyte
Organic semiconductors provide well-behaved charge transport in the solid state, but have not been studied in solution. Here, it is shown that upon chemical oxidation, hexabenzocoronenes (HBCs) enhance charge transport in non-aqueous electrolyte. Read More
-
Biphasic Electrode Suspensions for Li-Ion Semi-Solid Flow Cells with High Energy Density, Fast Charge Transport, and Low-Dissipation Flow
We created biphasic electrode suspensions composed of dispersed active particles and uniformly percolated conductive particles, different from the clustered suspensions using traditional suspension preparation procedures. 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