A5005922926- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Advanced Battery Technologies Research
- Supercapacitor Materials and Fabrication
- Extraction and Separation Processes
- Semiconductor materials and devices
- Transition Metal Oxide Nanomaterials
- Electron and X-Ray Spectroscopy Techniques
- Advanced battery technologies research
- Semiconductor materials and interfaces
- Planetary Science and Exploration
- Electrochemical Analysis and Applications
- Porphyrin and Phthalocyanine Chemistry
- Digital Media Forensic Detection
- Quantum Dots Synthesis And Properties
- Advanced NMR Techniques and Applications
- Electrocatalysts for Energy Conversion
- Astro and Planetary Science
- Catalysis and Oxidation Reactions
- Advanced Data Compression Techniques
- Graphite, nuclear technology, radiation studies
- Astronomy and Astrophysical Research
- Thermal Expansion and Ionic Conductivity
- Catalytic Processes in Materials Science
- Interconnection Networks and Systems
Argonne National Laboratory
2016-2025
California University of Pennsylvania
2025
University of North Florida
2025
University of Central Florida
2024
Rice University
2024
Sandia National Laboratories
2024
Alex's Lemonade Stand Foundation
2016-2023
Robert Bosch (Germany)
2023
GSI Helmholtz Centre for Heavy Ion Research
2023
Technical University of Darmstadt
2023
The status of ambient temperature sodium ion batteries is reviewed in light recent developments anode, electrolyte and cathode materials. These devices, although early their stage development, are promising for large-scale grid storage applications due to the abundance very low cost sodium-containing precursors used make components. engineering knowledge developed recently highly successful Li can be leveraged ensure rapid progress this area, different electrode materials electrolytes will...
A strategy used to design high capacity (>200 mAh g−1), Li2MnO3-stabilized LiMO2 (M = Mn, Ni, Co) electrodes for lithium-ion batteries is discussed. The advantages of the Li2MnO3 component and its influence on structural stability electrochemical properties these layered xLi2MnO3·(1 − x)LiMO2 are highlighted. Structural, chemical, thermal considered in context other commercially exploited electrode systems, such as LiCoO2, LiNi0.8Co0.15Al0.05O2, Li1+xMn2−xO4 LiFePO4.
The cathode in rechargeable lithium-ion batteries operates by conventional intercalation; Li+ is extracted from LiCoO2 on charging accompanied oxidation of Co3+ to Co4+; the process reversed discharge. In contrast, may be Mn4+-based solids, e.g., Li2MnO3, without Mn4+. A mechanism involving simultaneous Li and O removal often proposed. Here, we demonstrate directly, situ differential electrochemical mass spectrometry (DEMS), that O2 evolved such Mn4+ -containing compounds,...
Recent advances to develop manganese-rich electrodes derived from ‘composite’ structures in which a Li2MnO3 (layered) component is structurally integrated with either layered LiMO2 or spinel LiM2O4 component, M predominantly Mn and Ni, are reviewed. The electrodes, can be represented two-component notation as xLi2MnO3·(1 − x)LiMO2 x)LiM2O4, activated by lithia (Li2O) and/or lithium removal the Li2MnO3, components. provide an initial capacity >250 mAh g−1 when discharged between 5 2.0 V vs....
Sodium ion batteries are an attractive alternative to lithium that alleviate problems with availability and cost. Despite several studies of cathode materials for sodium involving layered oxide materials, there few low-voltage metal anodes capable operating reversibly at room temperature. We have synthesized amorphous titanium dioxide nanotube (TiO2NT) electrodes directly grown on current collectors without binders additives use as anode batteries. find only large diameter nanotubes (>80 nm...
Lithium- and manganese-rich layered electrode materials, represented by the general formula xLi2MnO3·(1 − x)LiMO2 in which M is Mn, Ni, Co, are of interest for both high-power high-capacity lithium ion cells. In this paper, synthesis, structural electrochemical characterization x)LiMn0.333Ni0.333Co0.333O2 electrodes over a wide compositional range (0 ≤ x 0.7) explored. Changes that occur to compositional, structural, properties as function importance using relatively high manganese content...
The kinetics of a first-order, solid-solid phase transition were investigated in the prototypical nanocrystal system CdSe as function crystallite size. In contrast to extended solids, nanocrystals convert from one structure another by single nucleation events, and transformations obey simple unimolecular kinetics. Barrier heights observed increase with increasing size, although they also depend on nature surface. These results are analogous magnetic transitions suggest general rules that may...
The Sample Analysis at Mars (SAM) investigation of the Science Laboratory (MSL) addresses chemical and isotopic composition atmosphere volatiles extracted from solid samples. SAM is designed to contribute substantially mission goal quantitatively assessing habitability as an essential step in search for past or present life on Mars. a 40 kg instrument suite located interior MSL's Curiosity rover. instruments are quadrupole mass spectrometer, tunable laser 6-column gas chromatograph all...
Electrochemical and structural properties of xLi2M'O3·(1−x)LiMn0.5Ni0.5O2 electrodes (M' = Ti, Mn, Zr; 0 ≤ x 0.3) for lithium batteries are reported. Powder X-ray diffraction, lattice imaging by transmission electron microscopy, nuclear magnetic resonance spectroscopy provide evidence that, M' Ti the Li2M'O3 component is structurally integrated into LiMn0.5Ni0.5O2 to yield "composite" structures with domains having short-range order, rather than true solid solutions in which cations...
Layered Na0.85Li0.17Ni0.21Mn0.64O2 is synthesized and evaluated as a cathode in Na batteries. The resulting P2 crystal structure allows for single-phase reversible intercalation reaction demonstrating 100 mAhg−1. can be discharged with high rate (65 mAhg−1 at 25 C rate). presence of Li the electronic ordering Ni(II)/Mn(IV) transition metal layer responsible material stability.
Material design in terms of their morphologies other than solid nanoparticles can lead to more advanced properties. At the example iron oxide, we explored electrochemical properties hollow with an application as a cathode and anode. Such contain very high concentration cation vacancies that be efficiently utilized for reversible Li ion intercalation without structural change. Cycling voltage range results capacity (∼132 mAh/g at 2.5 V), 99.7% Coulombic efficiency, superior rate performance...
Tailoring nanoarchitecture of materials offers unprecedented opportunities in utilization their functional properties. Nanostructures vanadium oxide, synthesized by electrochemical deposition, are studied as a cathode material for rechargeable Na-ion batteries. Ex situ and synchrotron characterizations revealed the presence an electrochemically responsive bilayered structure with adjustable intralayer spacing that accommodates intercalation Na(+) ions. Sodium intake induces organization...
A beyond Li-ion battery based on Zn metal, aprotic electrolyte, and a hydrated bilayered V2O5 cathode with large gallery spacing of 11–13 Å is introduced. The exhibits high 20 C rate capability good specific capacity 130 mA h g−1. This work provides some design rules for intercalation behavior in host electrodes nonaqueous environment. As service to our authors readers, this journal supporting information supplied by the authors. Such materials are peer reviewed may be re-organized online...
The Neutral Gas and Ion Mass Spectrometer (NGIMS) of the Mars Atmosphere Volatile Evolution Mission (MAVEN) is designed to measure composition, structure, variability upper atmosphere Mars. NGIMS complements two other instrument packages on MAVEN spacecraft characterize neutral ionosphere solar wind input this region atmosphere. combined measurement set quantify escape rates provide models evolution martian both surface reactive inert species ambient ions along track over 125–500 km altitude...
Novel layered P2/O3 intergrowth Na1-xLixNi0.5Mn0.5O2 cathodes show high-rate performance for sodium-ion batteries. The good electrochemical properties are attributed to the synergistic effect of an structure that results from direct incorporation Li in matrix. This finding highlights importance multiphase intergrowths with orientation relationships can attain future optimized As a service our authors and readers, this journal provides supporting information supplied by authors. Such...
The emergence of sodium-ion batteries (SIBs) employing cathodes based on earth abundant sodium and iron is expected to be ideal for large-scale electrical energy storage systems, which the cost factor primary importance. However, these iron-based layered oxides still show unsatisfactory cycle performance, redox fleeting Fe3+/Fe4+ couple needs better understood. In this study, we examine quasi-reversibility α-NaFeO2 cathode in cells. A NaFeO2 powder sample that has O3-type structure was...
Nanostructured bilayered V2O5 was electrochemically deposited within a carbon nanofoam conductive support. As-prepared synthesized incorporates structural water and hydroxyl groups, which effectively stabilizes the interlayers provides coordinative preference to Mg(2+) cation in reversible cycling. This open-framework electrode shows intercalation/deintercalation of ions common electrolytes such as acetonitrile. Using scanning transmission electron microscope we demonstrate that can be...
A lithium-air battery based on lithium oxide (Li2O) formation can theoretically deliver an energy density that is comparable to of gasoline. Lithium involves a four-electron reaction more difficult achieve than the one- and two-electron processes result in superoxide (LiO2) peroxide (Li2O2), respectively. By using composite polymer electrolyte Li10GeP2S12 nanoparticles embedded modified polyethylene matrix, we found Li2O main product room temperature solid-state battery. The rechargeable for...