A5102710321- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Semiconductor materials and devices
- ZnO doping and properties
- Advanced Battery Technologies Research
- Physics of Superconductivity and Magnetism
- Advanced Memory and Neural Computing
- Magnetic and transport properties of perovskites and related materials
- Ferroelectric and Negative Capacitance Devices
- Copper-based nanomaterials and applications
- Electronic and Structural Properties of Oxides
- Supercapacitor Materials and Fabrication
- Gas Sensing Nanomaterials and Sensors
- Cavitation Phenomena in Pumps
- Advanced Condensed Matter Physics
- Integrated Circuits and Semiconductor Failure Analysis
- Electrostatic Discharge in Electronics
- Electrochemical sensors and biosensors
- Transition Metal Oxide Nanomaterials
- Advanced biosensing and bioanalysis techniques
- Asymmetric Hydrogenation and Catalysis
- Water Systems and Optimization
- Advancements in Semiconductor Devices and Circuit Design
- Advanced Sensor and Energy Harvesting Materials
- Perovskite Materials and Applications
Lanzhou University
2022-2024
Shenyang University of Chemical Technology
2024
Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital
2024
University of Electronic Science and Technology of China
2022-2023
Fudan University
2013-2022
Chinese Academy of Sciences
2022
Institute of Geographic Sciences and Natural Resources Research
2022
Henan University
2022
State Key Laboratory of Pollution Control and Resource Reuse
2022
Tongji University
2022
Most P2-type layered oxides suffer from multiple voltage plateaus, due to Na+/vacancy-order superstructures caused by strong interplay between Na-Na electrostatic interactions and charge ordering in the transition metal layers. Here, Mg ions are successfully introduced into Na sites addition conventional Na0.7[Mn0.6Ni0.4]O2 as new cathode materials for sodium-ion batteries. layer serve "pillars" stabilize structure, especially high-voltage charging, meanwhile can destroy ordering. More...
Abstract Oxygen‐redox of layer‐structured metal‐oxide cathodes has drawn great attention as an effective approach to break through the bottleneck their capacity limit. However, reversible oxygen‐redox can only be obtained in high‐voltage region (usually over 3.5 V) current cathodes. Here, we realize a wide voltage range 1.5–4.5 V P2‐layered Na 0.7 Mg 0.2 [Fe Mn 0.6 □ ]O 2 cathode material, where intrinsic vacancies are located transition‐metal (TM) sites and Mg‐ions sites. layer serve...
The resistance switching characteristics of stoichiometric ZrO2 film were investigated for nonvolatile memory. Al∕ZrO2∕Al device presents reliable and reproducible behaviors. on/off ratio two stable states is larger than 2×103. It suggested that the current-voltage are governed by Schottky conduction mechanism in high voltage region, while filament low region. process explained terms spontaneous reversible reaction between electrode films with contribution Joule heating effect external...
Abstract Different sodium occupancy sites in P2‐layered cathode materials can reorganize Na‐ion distribution and modify the Na + /vacancy superstructure, which have a vital impact on transport storage behavior during charge discharge processes, but not been investigated specifically are yet well understood. Herein, ratio of two different (sites below transition metal ions oxygen along c direction) P2‐Na 0.67 [Mn 0.66 Ni 0.33 ]O 2 is tuned successfully by inducing Sb 5+ with strong repulsion...
LiNi0.8Co0.15Al0.05O2 (NCA) has been proven to be a good cathode material for lithium-ion batteries (LIBs), especially in electric vehicle applications. However, further elevating energy density of NCA is very challenging. Increasing the charging voltage an effective method, but its structural instability remains problem. In this work, we revealed that titanium substitution could improve cycle stability under high cutoff significantly. Titanium ions with relatively larger ion radius modify...
A self-assembly hybrid of gold nanoparticles on graphene modified electrodes for low-potential NADH detection has been achieved. We used the natural polymer chitosan (Chit) to assist stabilization in aqueous solution, and immobilize electronegative Au (NPs) through electrostatic attraction. The synergy NPs with catalytic oxidation made overpotential ca. 220 mV less positive than that bare electrode, remarkably increased current. amperometric sensors based such exhibited a good linearity from...
Abstract Designing Li composite electrodes with host frameworks for accommodating metal has been considered to be an effective approach suppress dendrites. Herein, asymmetric design of a Mo net/Li film (MLF) electrode is developed by inverted thermal infusion method. The MLF dense oxide passivated layer on the top side, porous net matrix back and active in between. side larger specific area higher electric field than which contacts separator upon cycling, triggering preferred deposition...
Lithium-sulfur (Li-S) batteries have been regarded as a promising candidate of secondary to satisfy the enormous demand for electric vehicles and energy storage applications. However, Li-S still suffer from severe capacity fading due shuttle effect lithium polysulfides. Here, we develop freestanding double-layer MoO3/carbon nanotube@S (FMC@S) membrane by hydrothermal suction filtration strategy, without polymer binder current collector substrate. FMC@S contains polysulfide blocking layer an...
Exploring new anode materials is critical for the development of Sodium-ion batteries (SIBs). Herein, a binary-metal selenide NiCo2Se4 was synthesized and investigated as material SIBs. After compositing with conductive carbon, NiCo2Se4@C composite delivers reversible capacity 603.2 mAh g−1 high initial coulombic efficiency 85.79% at 0.5 A g−1. At an ultrahigh current density 2 g−1, 377.5 can still be obtained after 600 cycles. The detailed Na storage mechanism revealed. discharge, Na2Se, Ni...
Abstract Resistive random access memory (RRAM) devices are made by copper nitride films prepared DC magnetron sputtering. After a forming process, the Cu x N‐based RRAM show bipolar character with low operation voltage and distinguishable resistance ratio. The fitting results for electrical measurements conducting atomic force microscope (CAFM) analysis indicate that resistive switching mechanism is consistent formation rupture of filaments. Simultaneously, distribution filaments measured...
Superelastic metal microsprings fabricated by deterministic rolling of nanomembranes have been anisotropic-strain-engineered via glancing angle deposition. The advantageous applications in liquid flow rate sensors and chemical-stimulated actuators due to their reliable superelasticity are demonstrated. Theoretical calculation microspring elongation as a function agrees with our experimental observation reveals that the sensitivity can be well tuned geometrical design microsprings. Such...
Novel bionanocomposite ionogels consisting of an ionic liquid (IL) 1-ethyl-3-methylimidazolium acetate (EMIMAc), microcrystalline cellulose (MCC) and nano-silica (nano-SiO2) particles with high tensile strength conductivity have been successfully prepared. Dynamic light scattering (DLS) transmission electron microscopy (TEM) measurements reveal a homogeneous dispersion nano-SiO2 in the MCC/nano-SiO2/EMIMAc ionogels. In order to clarify influences added on sol–gel transition process...
Abstract Performance degradation and safety issue caused by Li dendrite growth huge volume variation hinder the practical application of metal anode in high‐energy‐density lithium batteries. diffusion barrier host is a key parameter that determines growth. Herein, stable 21 Si 5 alloy with very low barriers designed prepared an situ metallurgical method using low‐cost micron silicon precursor. The enables dendrite‐free deposition behavior. It revealed in‐situ formed porous not only has high...