A5087291851- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Advanced Battery Technologies Research
- Extraction and Separation Processes
- Advanced battery technologies research
- Supercapacitor Materials and Fabrication
- Semiconductor materials and devices
- Electron and X-Ray Spectroscopy Techniques
- Electrocatalysts for Energy Conversion
- Fuel Cells and Related Materials
- Semiconductor materials and interfaces
- Thermal Expansion and Ionic Conductivity
- Inorganic Chemistry and Materials
- Ferroelectric and Piezoelectric Materials
- Perovskite Materials and Applications
- Transition Metal Oxide Nanomaterials
- Advanced Electron Microscopy Techniques and Applications
- Chemical Synthesis and Characterization
- Conducting polymers and applications
- Advancements in Solid Oxide Fuel Cells
- Advanced Memory and Neural Computing
- Machine Learning in Materials Science
- Advanced Thermoelectric Materials and Devices
- Electrochemical Analysis and Applications
- Electronic and Structural Properties of Oxides
University of California, San Diego
2016-2025
University of Chicago
2022-2025
Argonne National Laboratory
2022-2025
Shanghai Jiao Tong University
2024
Huazhong Agricultural University
2023-2024
Aging Community Coordinated Enterprises and Supportive Services (United States)
2022-2024
Centre for Sustainable Energy
2021-2024
Research Center for Eco-Environmental Sciences
2022-2024
Chinese Academy of Sciences
2017-2024
Beijing University of Technology
2024
New applications such as hybrid electric vehicles and power backup require rechargeable batteries that combine high energy density with charge discharge rate capability. Using ab initio computational modeling, we identified useful strategies to design higher battery electrodes tested them on lithium nickel manganese oxide [Li(Ni(0.5)Mn(0.5))O2], a safe, inexpensive material has been thought have poor intrinsic By modifying its crystal structure, obtained unexpectedly rate-capability,...
A layered SnS2-reduced graphene oxide (SnS2-RGO) composite is prepared by a facile hydrothermal route and evaluated as an anode material for sodium-ion batteries (NIBs). The measured electrochemical properties are high charge specific capacity (630 mAh g−1 at 0.2 g−1) coupled to good rate performance (544 2 long cycle-life (500 1 400 cycles).
High voltage cathode materials Li-excess layered oxide compounds Li[NixLi1/3−2x/3Mn2/3−x/3]O2 (0 < x 1/2) are investigated in a joint study combining both computational and experimental methods. The bulk surface structures of pristine cycled samples Li[Ni1/5Li1/5Mn3/5]O2 characterized by synchrotron X-Ray diffraction together with aberration corrected Scanning Transmission Electron Microscopy (a-S/TEM). Energy Loss Spectroscopy (EELS) is carried out to investigate the changes before/after...
Graphitic carbon is currently considered the state-of-the-art material for negative electrode in lithium-ion cells, mainly due to its high reversibility and low operating potential. However, anodes exhibit mediocre charge/discharge rate performance, which contributes severe transport-induced surface-structural damage upon prolonged cycling, limits lifetime of cell. Lithium bulk diffusion graphitic not yet completely understood, partly complexity measuring transport properties finite-sized,...
Abstract Lattice oxygen can play an intriguing role in electrochemical processes, not only maintaining structural stability, but also influencing electron and ion transport properties high-capacity oxide cathode materials for Li-ion batteries. Here, we report the design of a gas–solid interface reaction to achieve delicate control activity through uniformly creating vacancies without affecting integrity Li-rich layered oxides. Theoretical calculations experimental characterizations...
Silicon anode solid-state batteries Research on has focused lithium metal anodes. Alloy-based anodes have received less attention in part due to their lower specific capacity even though they should be safer. Tan et al . developed a slurry-based approach create films from micrometer-scale silicon particles that can used with carbon binders. When incorporated into batteries, showed good performance across range of temperatures and excellent cycle life full cells. —MSL
Layered P2-Na(x)[Ni(1/3)Mn(2/3)]O(2) (0 < x 2/3) is investigated as a cathode material for Na-ion batteries. A combination of first principles computation, electrochemical and synchrotron characterizations conducted to elucidate the working mechanism improved properties. The reversible phase transformation from P2 O2 observed. New configurations Na-ions vacancy are found at = 1/3 1/2, which correspond intermediate phases upon cycling process. mobility using galvanostatic intermittent...
Abstract Although layered lithium oxides have become the cathode of choice for state‐of‐the‐art Li‐ion batteries, substantial gaps remain between practical and theoretical energy densities. With aim supporting efforts to close this gap, work reviews fundamental operating mechanisms challenges Li intercalation in oxides, contrasts how these play out differently different materials (with emphasis on Ni–Co–Al (NCA) Ni–Mn–Co (NMC) alloys), summarizes extensive corpus modifications extensions...
First principles computation methods play an important role in developing and optimizing new energy storage conversion materials. In this review, we present overview of the approach aimed at designing better electrode materials for lithium ion batteries. Specifically, show how each relevant property can be related to structural component material computed from first principles. By direct comparison with experimental observations, hope illustrate that help accelerate design development
Abstract The recent proliferation of renewable energy generation offers mankind hope, with regard to combatting global climate change. However, reaping the full benefits these sources requires ability store and distribute any generated in a cost‐effective, safe, sustainable manner. As such, sodium‐ion batteries (NIBs) have been touted as an attractive storage technology due their elemental abundance, promising electrochemical performance environmentally benign nature. Moreover, new...
Sulfide-based solid electrolytes are promising candidates for all solid-state batteries (ASSBs) due to their high ionic conductivity and ease of processability. However, narrow electrochemical stability window causes undesirable electrolyte decomposition. Existing literature on Li-ion ASSBs report an irreversible nature such decompositions, while Li–S show evidence some reversibility. Here, we explain these observations by investigating the redox mechanism argyrodite Li6PS5Cl at various...
Li-substituted layered P2–Na0.80[Li0.12Ni0.22Mn0.66]O2 is investigated as an advanced cathode material for Na-ion batteries. Both neutron diffraction and nuclear magnetic resonance (NMR) spectroscopy are used to elucidate the local structure, they reveal that most of Li ions located in transition metal (TM) sites, preferably surrounded by Mn ions. To characterize structural changes occurring upon electrochemical cycling, situ synchrotron X-ray conducted. It clearly demonstrated no...
Large-scale electric energy storage is fundamental to the use of renewable energy. Recently, research and development efforts on room-temperature sodium-ion batteries (NIBs) have been revitalized, as NIBs are considered promising, low-cost alternatives current Li-ion battery technology for large-scale applications. Herein, we introduce a novel layered oxide cathode material, Na0.78Ni0.23Mn0.69O2. This new compound provides high reversible capacity 138 mAh g–1 an average potential 3.25 V vs...
Thermoregulation has substantial implications for energy consumption and human comfort health. However, cooling technology remained largely unchanged more than a century still relies on the entire space regardless of number occupants. Personalized thermoregulation by thermoelectric devices (TEDs) can markedly reduce volume meet individual needs but yet to be realized because lack flexible TEDs with sustainable high performance. Here, we demonstrate wearable TED that deliver 10°C effect...
Fluoroethylene carbonate (FEC) has become a standard electrolyte additive for use with silicon negative electrodes, but how FEC affects solid interphase (SEI) formation on the anode's surface is still not well understood. Herein, SEI formed from LiPF6-based electrolytes, and without FEC, were investigated 50 nm thick amorphous thin film electrodes to understand role of electrode reactions. In contrast previous work, anhydrous anoxic techniques used prevent air moisture contamination prepared...