Latest Updates
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Interface-Induced Renormalization of Electrolyte Energy Levels in Magnesium Batteries
Interface-induced changes to the stability of several electrolyte solvents on Mg-based electrodes were predicted using accurate many-body perturbation theory calculations. Read More
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The Role of MgCl2 as a Lewis Base in ROMgCl–MgCl2 Electrolytes for Magnesium-Ion Batteries
A series of alkoxide/siloxide magnesium electrolytes were developed with environmentally benign MgCl2 and ROMgCl (R=alkyl or silyl). The resulting electrolytes possess oxidative stability up to about 3.5 V (vs. Mg/Mg2+), representing one of the best stability performing among all reported electrolytes for Mg-ion batteries. The mechanistic study towards the generation of active ionic species was extensively carried out. Read More
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In situ 7Li and 133Cs NMR Investigations of the Role of Cs+ Additive in Lithium-Metal Deposition Processes
Insights are obtained into the mechanisms of adding Cs+ to protect the Li-metal electrode during battery cycling. Read More
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Fullrmc, A Rigid Body Reverse Monte Carlo Modeling Package Enabled With Machine Learning And Artificial Intelligence
Novel approach to reverse modelling atomic and molecular systems from a set of experimental data and constraints. New fitting concepts such as ‘Group’, ‘GroupSelector’, ‘MoveGenerator’ and modelling modes (recurring, refining and exploring) stand out from all other existing Reverse Monte Carlo (RMC) software. Read More
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2,5-Dimethoxy-1,4-Benzoquinone (DMBQ) as Organic Cathode for Rechargeable Magnesium-Ion Batteries
2,5-dimethoxyl-1,4-benzoquinone (DMBQ) was investigated as 2 V (vs Mg/Mg2+) organic cathode material for non-aqueous rechargeable magnesium-ion batteries Read More
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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
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Why We Need A Revolution In Energy Storage
George Crabtree and JCESR scientists talk with Craig Benzine, host of PBS-sponsored YouTube show, “The Good Stuff” on why we need a better grid, the importance of energy storage on the grid and how all these things would confuse the ghost of Thomas Edison. Read More
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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
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Redox Mediators that Promote Three-Dimensional Growth of Li2S on Carbon Current Collectors in Lithium-Sulfur Batteries
Developed, from computation and experiment, redox mediators that allow 3-D growth of Li2S on carbon current collectors for greater capacity utilization in Li-S batteries Read More
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Compliant Glass–Polymer Hybrid Single Ion-Conducting Electrolytes for Lithium Batteries
We have successfully developed non-flammable hybrid single-ion-conducting electrolytes comprising inorganic sulfide glass particles covalently bonded to a perfluoropolyether polymer. These electrolytes present high transference numbers, unprecedented ionic conductivities at room temperature, excellent electrochemical stability, and limit the dissolution of lithium polysulfides. Read More
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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
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On Graded Electrode Porosity as a Design Tool for Improving the Energy Density of Batteries
This work shows that varying the porosity can only lead to marginal improvements in energy density compared to well-designed constant-porosity electrodes, and suggests that focusing on decreasing the tortuosity would be a better approach. Read More
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In-Situ XANES and EXAFS Analysis of Redox Active Fe Center Ionic Liquids
Redox active ionic liquids have been studied using in situ electrochemical and spectroscopic techniques to demonstrate conformational change in ligand structure during redox behavior of the iron center. Read More
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An Investigation of the Ionic Conductivity and Species Crossover of Lithiated Nafion 117 in Nonaqueous Electrolytes
Solvent volume fraction within the membrane has the greatest effect on both conductivity and crossover; as a secondary effect, the charge on redox species modifies crossover rates in accordance with Donnan exclusion. Read More
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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
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A Functional Impurity for Li-O2 Battery Cathode
Demonstrated that alkali metal can be used as a catalyst Li-O2 cell cathode design and opens the possibility of future optimization of functional K-doping in carbon cathode materials. Read More
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Strategy of the Joint Center for Energy Storage Research to Influence Laboratory Safety Among its Funded Researchers
JCESR strives to influence safe science among its researchers. Read More
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The First Ca-ion Rechargeable Battery
We have demonstrated the first ever rechargeable battery utilizing calcium as the working ion. Read More
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Investigation of Charge Transfer Mechanisms on Redox Active Polymers Using RDE and SECM
This study is a first step to evaluate rate determining processes on the electrochemical activity of RAPs. Using different electrochemical techniques we determined the presence of several preceding chemical steps. We also studied how the resulting RAP film mediates the charge transfer process and affects the electrochemical behavior of RAPs. Read More
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Evolutionary Design of Low Molecular Weight Organic Anolyte Materials for Applications in Nonaqueous Redox Flow Batteries
All-organic anolyte materials for nonaqueous redox flow batteries with high stability at all redox states were designed through an iterative study. Anolyte materials exhibit two chemically reversible reductions, have low equivalent weights of only 111 g/mol/e–, undergo reversible electro-chemistry in Li-ion supporting electrolytes, and are stable in solution for greater than 2 months without detectable decomposition. Read More