Latest Updates
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The Mystery and Promise of Multivalent Metal-ion Batteries
In this perspective, we highlight some of the recent progress and uncertainty in elucidating capacity contributions and accompanying mechanisms for different charge carriers. We then discuss cell balancing and increasing metal anode utilization as major remaining challenges, and propose design strategies and future directions for realizing practical MV metal-ion batteries. Read More
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Toward the Development of a High-VoltageMg Cathode Using a Chromium Sulfide Host
The electrochemical behavior of MgM2S4 (M = Ti, Cr) thiospinels was investigated experimentally and their redox activity was understood through analysis of the computed electronic density of states. Read More
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Operando X-ray Diffraction Studies of the Mg-Ion Migration Mechanisms in Spinel Cathodes
The Mg-ion migration mechanisms in MgMnCrO4 spinel cathode was investigated experimentally through operando x-ray diffraction revealing a complex mechanism during Mg insertion/extraction. Read More
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Understanding and enhancing ion transport in a systematic series of polyacetal electrolytes
Polyacetal electrolytes can electrochemically outperform the well-established poly(ethylene oxide) systems used in Li-ion batteries. In this work, we employ a suite of experimental and theoretical techniques to reveal the underlying molecular interactions between cations, anions and the polyacetal host that lead to improved electrochemical efficacy. Read More
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A Comparative Study of Organic Radical Cation Stability and Coulombic Efficiency for Nonaqueous Redox Flow Battery Applications
The charged forms of high oxidation potential posolytes exhibited either self-discharge or a combination of self-discharge and molecular degradation, limiting CE and/or cycle lifetime in the galvanostatic cycling, presenting a challenge of utilizing high potential compounds in nonaqueous RFBs. Read More
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Employing the Dynamics of the Electrochemical Interface at Aqueous Zinc-Ion Battery Cathode
This report illustrates how dissolution, once seen as a fundamental drawback for MnO2 cathodes, can fortify capacity in AZIBs and provides guidance for expanding this concept and developing other systems that can reversibly deposit and dissolve the active material in a dynamic manner. Read More
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Understanding of electrolyte solution chemistry and interface electrochemistry of divalent metal batteries
This review discusses the design of electrolytes that involve different solvation structures related, in particular, the choice of anionic species. It focuses on the dynamic interplay of these electrolytes with interfaces as well as the electrochemistry of divalent metal anodes. Read More
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Control of crystal size tailors the electrochemical performance of α-V2O5 as a Mg2+ intercalation host
Reducing the particle size of α-V2O5 dramatically improved the energetics of Mg intercalation on the first cycle, whereas latter cycles showed no relative benefits, revealing that non-diffusive barriers contribute to current limitations in Mg batteries Read More
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Probabilistic deep learning to automate the interpretation of multi-phase diffraction spectra
We designed a deep learning algorithm to automate the identification of inorganic materials from experimentally measured X-ray diffraction spectra. Read More
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Crowded electrolytes containing redoxmers in different states of charge: solution structure and properties
Neutral and charged crowded electrolytes containing redox active organic molecules (redoxmers) are shown to suffer exponential decline in their dynamic properties as they approach the gel-like regime that sets in between 1 and 2 M. Read More
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Toward autonomous design and synthesis of novel inorganic materials
We present an overview of recent progress in the design of self-driving laboratories, including robotics to automate materials synthesis and characterization, in conjunction with artificial intelligence to interpret experimental outcomes and propose new experimental procedures. Read More
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MoS2 for beyond lithium-ion batteries
This perspective discussed recent development on the fabrication of novel MoS2 nanostructures, their application in beyond lithium-ion batteries and in-situ/operando characterization methods involved. An outlook was provided for its application in the future advancement of the beyond lithium-ion batteries. Read More
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Fluorinated interphase enables reversible aqueous zinc battery chemistries
A novel, dilute dual salt electrolyte promotes formation of a robust and hydrophobic fluorine-rich interphase that suppresses the parasitic hydrogen evolution reaction, enabling highly reversible and dendrite-free Zn plating/stripping and supporting a 325 Wh kg-1 Zn-air full cell for 300 cycles. The merits of this electrolyte are further demonstrated under challenging limited Zn conditions with multiple intercalation cathodes. Read More
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JCESR researchers testify before the House Science, Space and Technology Committee
JCESR researchers Kristin Persson and Fik Brushett testified May 4 before the House Science, Space and Technology Committee, Subcommittee on Energy, to share how the climate and energy science research sponsored by the Department of Energy’s (DOE) Office of Science… Read More
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Fast Ion Conducting Thioboracite with a Perovskite Topology and Argyrodite-like Lithium Substructure
Li6B7S13I is the first of a new class of Li ion conducting solid electrolyte materials, with promising properties for all-solid-state batteries. Read More
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Anion-Assisted Delivery of Multivalent Cations to Inert Electrodes – MgTFSI2:THF@graphene
Advanced free energy sampling calculations reveal that TFSI anions assist in bringing Mg cations closer for reduction at an inert graphene electrode. Read More
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Water-in-Salt LiTFSI Aqueous Electrolytes: Liquid Structure
In the highly concentrated 20 m LiTFSI solution, the water network existing in low concentration aqueous electrolytes is completely broken and is replaced by a TFSI- network; in spite of local heterogeneity, the liquid structure is homogeneous in general instead of forming TFSI- rich or water rich domains. Read More
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The Quest for Functional Oxide Cathodes for Magnesium Batteries: A Critical Perspective
This Perspective describes a holistic approach to robustly confirm and quantify Mg intercalation in metal oxides, and critically surveys recent literature to reveal true state-of-the-art metal oxides for Mg batteries. Read More
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Improved Li+ transport in Polyacetal Electrolytes: Conductivity and Current Fraction in a Series of Polymers
Our team identified several polymer electrolytes that outperform Li-ion transport in PEO by nearly 150% based on conductivity and current fraction measurements. Read More
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Diversity-oriented synthesis of polymer membranes with ion solvation cages
Diversification of the PIM scaffold accelerates the identification of PIMs with desirable guest-host interactions. Li-solvating morpholine groups displayed in the PIM’s free volume elements offer exceptionally high conductivity and LI+ transference number. Read More