A5084212766- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Extraction and Separation Processes
- Advanced Battery Technologies Research
- Surface and Thin Film Phenomena
- Thermal Expansion and Ionic Conductivity
- Machine Learning in Materials Science
- Molecular Junctions and Nanostructures
- Organic Electronics and Photovoltaics
- Quantum and electron transport phenomena
University of Miami
2024
Mississippi State University
2023
Rice University
2022
Southern University of Science and Technology
2021
Aprotic lithium-oxygen batteries (LOBs) are promising energy storage systems characterized by ultrahigh theoretical density. Extensive research has been devoted to this battery technology, yet the detailed operational mechanisms involved, particularly unambiguous identification of various discharge products and their specific distributions, still unknown or subjects controversy. This is partly because intrinsic complexity chemistry but also lack atomic-level insight into oxygen electrodes...
Potassium-based solid electrolyte interphases (SEIs) have a much smaller damage threshold than their lithium counterpart; thus, they are significantly more beam sensitive. Here, an ultralow-dose cryogenic transmission electron microscopy (cryo-TEM) technique (≈8 e Å-2 s-1 × 10 s), which enables the atomic-scale chemical imaging of electron-beam-sensitive potassium metal and SEI in its native state, is adapted. The potassium-based consists large brackets diverse inorganic phases (≈hundreds...
High-concentrated non-flammable electrolytes (HCNFE) in lithium metal batteries prevent thermal runaway accidents, but the microstructure of their solid electrolyte interphase (SEI) remains largely unexplored, due to lack direct imaging tools. Herein, cryo-HRTEM is applied directly visualize native state SEI at atomic scale. In HCNFE, has a uniform laminated crystalline-amorphous structure that can further reaction between and lithium. The inorganic component, Li2 S2 O7 , precisely...
Molecular-scale junctions (MSJs) have been considered the ideal testbed for probing physical and chemical processes at molecular scale. Due to nanometric confinement, charge energy transport in MSJs are governed by quantum mechanically dictated profiles, which can be tuned chemically or physically with atomic precision, offering rich possibilities beyond conventional semiconductor devices. While has extensively studied over past two decades, understanding conversion only become...
High-Concentrated Non-Flammable Electrolytes In article 2300849, Lei Li, Joseph S. Francisco, Meng Gu, and co-workers uncover a uniform laminated crystalline-amorphous structure of the solid electrolyte interphase (SEI) at atomic scale in high-concentrated non-flammable electrolytes using cryo-high-resolution transmission electron microscopy (HRTEM). This research yields valuable insights into stability lithium conductivity electrolytes, which can improve safety metal batteries.
Increasing electrolyte concentration is a typical strategy to boost the stability of lithium (Li) metal anode, yet fundamental mechanism remains mystery. By virtue comprehensive characterization solid interphase (SEI) via cryogenic electron microscopy (Cryo-EM), we revealed effects solvation structure in ether-based electrolytes on SEI formation as well electrochemical performance. The formed low-concentration (LCE) adopts Mosaic-type with randomly distributed Li2CO3, which leads uneven Li...