A5077235314- Graphene research and applications
- Carbon Nanotubes in Composites
- Advancements in Battery Materials
- 2D Materials and Applications
- Electronic and Structural Properties of Oxides
- Boron and Carbon Nanomaterials Research
- Ferroelectric and Piezoelectric Materials
- Advanced Battery Materials and Technologies
- Multiferroics and related materials
- MXene and MAX Phase Materials
- ZnO doping and properties
- Supercapacitor Materials and Fabrication
- Magnetic and transport properties of perovskites and related materials
- Advanced Memory and Neural Computing
- Nanowire Synthesis and Applications
- Spine and Intervertebral Disc Pathology
- Advanced battery technologies research
- Diamond and Carbon-based Materials Research
- Electrocatalysts for Energy Conversion
- Quantum Dots Synthesis And Properties
- Advanced Sensor and Energy Harvesting Materials
- Ferroelectric and Negative Capacitance Devices
- Advanced Condensed Matter Physics
- Mechanical and Optical Resonators
- Semiconductor materials and devices
Institute of Physics
2016-2025
Chinese Academy of Sciences
2016-2025
National Laboratory for Superconductivity
2012-2025
University of Chinese Academy of Sciences
2017-2025
Songshan Lake Materials Laboratory
2019-2025
Czech Academy of Sciences, Institute of Physics
2007-2025
China University of Mining and Technology
2025
China Pharmaceutical University
2025
Xi'an University of Architecture and Technology
2020-2024
Xiamen University of Technology
2024
Layering the charge Layered metal oxides such as lithium cobalt oxide have attracted great attention for rechargeable batteries. In cells, only octahedral structure forms, but in sodium trigonal prismatic structures are also possible. However, there is a lack of understanding about how to predict and control formation each structure. Zhao et al. used simple properties ions, namely their radius appropriately weighted by stoichiometry, determine whether interlayers between transition or other...
Layered molybdenum disulfide (MoS2) has been studied for decades its diversity of structure and properties, where the structural dynamic evolution during lithium intercalation is an important but still indistinct, controversial topic. Here electrochemical process MoS2 nanosheets upon systematically investigated by in situ high-resolution transmission electron microscopy. The results indicate that lithiated undergoes a trigonal prismatic (2H)-octahedral (1T) phase transition with ion...
The electric transport properties of an individual vertical multiwall carbon nanotube (MWCNT) were studied in situ at room temperature a scanning electron microscope chamber. It was found that the single MWCNT has large current-carrying capacity, and maximum current can reach 7.27 mA. At same time, very low resistance about $34.4\text{ }\text{ }\ensuremath{\Omega}$ high conductance $(460--490){G}_{0}$ obtained. experimental observations imply multichannel quasiballistic conducting behavior...
The mechanical resonance of a single ZnO nanobelt, induced by an alternative electric field, was studied in situ transmission electron microscopy. Due to the rectangular cross section two fundamental modes have been observed corresponding orthogonal transverse vibration directions, showing versatile applications nanobelts as nanocantilevers and nanoresonators. bending modulus measured be ∼52 GPa damping time constant vacuum 5×10−8 Torr ∼1.2 ms quality factor Q=500.
Monolayer molybdenum disulfide (MoS2) has attracted great interest due to its potential applications in electronics and optoelectronics. Ideally, single-crystal growth over a large area is necessary preserve intrinsic figure of merit but very challenging achieve. Here, we report an oxygen-assisted chemical vapor deposition method for monolayer MoS2. We found that the MoS2 domains can be greatly improved by introducing small amount oxygen into environment. Triangular achieved with sizes up...
Boron nitride (BN) is a promising semiconductor with wide band gap (∼6 eV). Here, we report the synthesis of vertically aligned BN nanosheets (BNNSs) on silicon substrates by microwave plasma chemical vapor deposition from gas mixture BF3−N2−H2. The size, shape, thickness, density, and alignment BNNSs were well-controlled appropriately changing growth conditions. With flow rates BF3 H2 as well their ratio, evolve three-dimensional branches to two-dimensional smooth surface thickness changes...
Layered Na-based oxides with the general composition of NaxTMO2 (TM: transition metal) have attracted significant attention for their high compositional diversity that provides tunable electrochemical performance electrodes in sodium-ion batteries. The various compositions bring forward complex structural chemistry is decisive layered stacking structure, Na-ion conductivity, and redox activity, potentially promising new avenues functional material properties. In this work, we explored...
Abstract The Li‐rich layer‐structured oxides are regarded as one of the most promising cathode materials for their high energy density but suffer from severe problems such capacity fading, poor rate performance, and continuous potential dropping. These issues addressed here by surface doping niobium (Nb) other heavy ions in a Mn‐based layered oxide, Li 1.2 Mn 0.54 Ni 0.13 Co O 2 . doped verified to be located Li‐layer near oxide surface; they bind slabs via strong NbO bonds “inactivate”...
We report a scalable growth of monolayer MoS2 films on SiO2 substrates by chemical vapor deposition. As-grown polycrystalline are continuous over the entire substrate surface with tunable grain size from ∼20 nm up to ∼1 μm. An obvious blue-shift (up 80 meV) photoluminescence peaks was observed series samples different sizes. Back-gated field effect transistors based film typical ∼600 shows mobility ∼7 cm(2)/(V s) and on/off ratio ∼10(6), comparable those achieved exfoliated MoS2. Our work...
We have developed an efficient chemical exfoliation approach for the high-throughput synthesis of solution-processable, high-quality graphene sheets that are noncovalently functionalized by alkylamine. Purely coherent nonlinear optical response these has been investigated, using near-infrared, visible, and ultraviolet continous wave ultrafast laser beams. Spatial self-phase modulation unambiguously observed in solution dispersions. Our results suggest this light scattering is due to a...
Abstract Poly(ethylene oxide) (PEO)‐based solid electrolytes are expected to be exploited in solid‐state batteries with high safety. Its narrow electrochemical window, however, limits the potential for voltage and energy density applications. Herein oxidation behavior of PEO failure mechanisms LiCoO 2 ‐PEO studied. It is found that although pure it starts oxidize at a above 3.9 V versus Li/Li + , decomposition products have appropriate Li conductivity unexpectedly form relatively stable...
The switching behaviors of ionic/electronic mixed conductor-based solid electrolyte nonvolatile memories have been attributed to repetitive formation and breakage the conductive pathways inside a electrolyte. However, direct evidence such pathway existences their formations has never provided. Herein, we reproduced behavior Ag/Ag2S/W sandwich structure high-resolution transmission electron microscope equipped with scanning tunneling unit. on/off current ratio 5 orders magnitude was...
Abstract High-entropy alloys/compounds have large configurational entropy by introducing multiple components, showing improved functional properties that exceed those of conventional materials. However, how increasing impacts the thermodynamic/kinetic in liquids are ambiguous. Here we show this strategy liquid electrolytes for rechargeable lithium batteries, demonstrating substantial impact raising salts. Unlike all so far reported, participation several anionic groups electrolyte induces a...
Developing liquid electrolytes with higher kinetics and enhanced interphase stability is one of the key challenges for lithium batteries. However, poor solubility salts in solvents sets constraints that compromises electrolyte properties. Here, it shown introducing multiple to form a high-entropy solution, alters solvation structure, which can be used raise specific stabilize electrode-electrolyte interphases. The prepared significantly enhance cycling rate performance For lithium-metal...
The in-depth mechanism on the simultaneous activation of O2 and surface lattice O2- one active metallic site has not been elucidated yet. Herein, we report a strategy for construction abundant oxygen sites by rational design Cu1 /TiO2 single atom catalysts (SACs). charge transfer between isolated Cu TiO2 support generates CuI 2-coordinated Olat in -O-Ti hybridization structure, which facilitates chemisorption molecules. Simultaneously, induced distortion activate adjacent , achieving dual ....
Monolayer molybdenum disulfide (ML-MoS2) is an emergent two-dimensional (2D) semiconductor holding potential for flexible integrated circuits (ICs). The most important demands the application of such ML-MoS2 ICs are low power consumption and high performance. However, these currently challenging to satisfy due limitations in material quality device fabrication technology. In this work, we develop ultra-thin high-κ dielectric/metal gate technique realization thin film transistors based on...
The precise precursor supply is a precondition for controllable growth of two-dimensional (2D) transition metal dichalcogenides (TMDs). Although great efforts have been devoted to modulating the supply, few effective methods chalcogen feeding control were developed. Here we report strategy using active monomer grow high-quality TMDs in robust and manner, e.g., MoS2 monolayers perform representative photoluminescent circular helicity ~92% electronic mobility ~42 cm2V-1s-1. Meanwhile, uniform...