A5100328500- Advanced Battery Materials and Technologies
- Advancements in Battery Materials
- Advanced Battery Technologies Research
- Power Systems and Technologies
- MXene and MAX Phase Materials
- Integrated Energy Systems Optimization
- Smart Grid and Power Systems
- Tribology and Lubrication Engineering
- Nonlinear Dynamics and Pattern Formation
- Transportation Planning and Optimization
- Electric and Hybrid Vehicle Technologies
- Railway Systems and Energy Efficiency
- Fluid Dynamics and Vibration Analysis
- Advanced Photocatalysis Techniques
- Aerodynamics and Fluid Dynamics Research
- Power System Reliability and Maintenance
- Supercapacitor Materials and Fabrication
- Conducting polymers and applications
- Power Systems and Renewable Energy
- Advanced Algorithms and Applications
- Electric Vehicles and Infrastructure
- Fluid Dynamics and Turbulent Flows
- Advancements in Semiconductor Devices and Circuit Design
- Vibration and Dynamic Analysis
- Transportation and Mobility Innovations
Zhoushan Hospital
2024
Lanzhou University
2021-2023
China Electric Power Research Institute
2013-2023
North China Electric Power University
2009-2023
Changchun Institute of Technology
2012-2023
Pennsylvania State University
2014-2022
Argonne National Laboratory
2021
Shanghai Electric (China)
2020-2021
Zhejiang University
2020
Hangzhou Xixi hospital
2020
The experimental observation of Li dendrite growth inside mechanically hard solid electrolytes (SEs) raised an important question: can SEs stop Li-dendrite growth? Here, we report a multiscale model coupling density functional theory calculations with the phase-field method to address question. In particular, investigate roles internal defects, such as pores and crack surfaces, number including cubic Li7La3Zr2O12 (c-LLZO), β-Li3PS4, Li1.17Al0.17Ti1.83(PO4)3 (LATP), Li2PO2N. It is shown that...
The Solid electrolyte interphase (SEI), either naturally formed or artificially designed, plays a critical role in the stability and durability of Li-ion batteries (LIBs). It is even more important for high energy density electrodes such as Li metal anodes, which subjected to large volumetric interfacial variations due deposition/stripping cycles during operation. Currently, there lack understanding SEI/Li interfaces their mechanical electrochemical properties. In this paper, we present an...
Visualization of ion transport in electrolytes provides fundamental understandings electrolyte dynamics and electrolyte-electrode interactions. However, this is challenging because existing techniques are hard to capture low ionic concentrations fast dynamics. Here we show that stimulated Raman scattering microscopy offers required resolutions address a long-lasting question: how does the lithium-ion concentration correlate uneven lithium deposition? In study, anions used represent ions...
We report on electronic properties of graphene synthesized by chemical vapor deposition (CVD) copper then transferred to SiO2/Si. Wafer-scale (up 4 in.) films have been synthesized, consisting dominantly monolayer as indicated spectroscopic Raman mapping. Low temperature transport measurements are performed microdevices fabricated from such CVD graphene, displaying ambipolar field effect (with on/off ratio ∼5 and carrier mobilities up ∼3000 cm2/V s) “half-integer” quantum Hall effect, a...
Abstract The application of lithium (Li) metal anodes in Li batteries has been hindered by growth dendrites, which lead to short cycling life. Here a Li‐ion‐affinity leaky film as protection layer is reported promote dendrite‐free anode. induces electrokinetic phenomena enhance Li‐ion transport, leading reduced concentration polarization and homogeneous distribution. As result, the anode during plating/stripping demonstrated even at an extremely high deposition capacity (6 mAh cm −2 )...
The shuttle effect of soluble lithium polysulfides (LiPSs) between electrodes and slow reaction kinetics lead to extreme inefficiency poor high current cycling stability, which limits the commercial application Li-S batteries. Herein, multi-dimensional composite frame has been proposed as modified separator (MCCoS/PP) battery, is composed CoS2 nanoparticles on alkali-treated MXene nanosheets carbon nanotubes. Both experiments theoretical calculations show that bifunctional catalytic activity...
The recombination loss of photo-carriers in photocatalytic systems fatally determines the energy conversion efficiency photocatalysts. In this work, an electrostatic field was used to inhibit photocatalysts by separating photo-holes and photo-electrons space. As a model structure, (010) facet-exposed BiVO4 nanowires were grown on PDMS-insulated piezo-substrate piezoelectric transducer (PZT). PZT substrate will generate under certain stress, behavior is influenced field. Our results showed...
The urban metro rail transit system generates ground vibration during operation, and these vibrations will propagate through the lead to of nearby buildings. Therefore, finite element numerical model is constructed with example subway tunnel passing surface building, under influence structural thickness ratio TR-BL distance DR-SD, response characteristics building infrastructure descending train dynamic load are analyzed. results indicate that: neighboring structure obviously positively...
Abstract Aligned Ca 2 Ge 7 O 16 nanowire arrays were successfully grown on carbon textiles to form hierarchical 3D structures by using a facile hydrothermal method large scale. Typical nanowires are single crystals that show preferred growth along the [001] direction. The used as binder‐free anodes for lithium‐ion batteries, which showed features of highly reversible capacity (900–1100 mA h g −1 at current density 300 ), remarkable cycling stability, even over 100 cycles, and good rate...
Understanding the solid electrolyte interphase (SEI) formation mechanism is critically important for performance and durability of lithium-ion batteries. However, details how SEI builds up into a nanometer-thick layer from molecular level reduction reactions on negative electrodes are missing. Here, isotope-assisted time-of-flight secondary ion mass spectrometry analyses were designed to answer this fundamental question. By investigating isotope ratio profile in during initial cycle, it...
Abstract The stability of solid electrolyte interphase (SEI) layers is critical for developing lithium (Li) metal batteries. However, the fabrication stable SEI plagued by un‐controlled structures, properties, and functions. Here a controllable design an ordered LiF‐rich lithiophilic hybrid Janus (LiF‐HJI) reported using organic fluorination reagent as functional precursor. LiF‐HJI with lower crystalline LiF layer upper Li organosulfide provides high interfacial energy strong Li‐ion...
Electroplating is one of the most common processes to create smooth surfaces and thin coatings, but achieving lithium (Li) plating without Li dendrite growth remains a challenge for developing next-generation Li-ion batteries based on metal anodes. One main reasons our inability directly model predict atomistic mesoscale mechanisms underlying complex electroplating process involving concurrent ionic transport, redox reactions, development morphological instability. Here we report multiscale...
Temperature-dependent subthreshold and gate-oxide leakage power characteristics of domino logic circuits under the influence process parameter variations are evaluated in this paper. Preferred input vectors node voltage states that minimize total consumption identified at lower upper extremes a typical die temperature spectrum. New low-leakage circuit design guidelines presented based on results. Significantly increased gate dielectric tunneling current, as described paper, dramatically...
Stability, biocompatibility and near-infrared photoluminescence of PbS nanocrystals capped with PEG-based ligands open up realistic prospects for non-invasive bioimaging applications.
Transition metal sulfide (TMS) CoS2 is considered an ideal anode material for new-generation lithium-ion batteries (LIBs) because of its high specific capacity, electrochemical activity, and low cost. However, prone to volume expansion structural collapse when it participates in the internal conversion reaction battery, which limits practical application. After analyzing failure mechanism as LIBs, concept nanoengineered materials introduced here. particles are nanosized stabilized by...
This work demonstrates pathways toward affordable, fast-charging Li-ion batteries by implementing a constant-risk charging protocol with active thermal management.