A5009777382- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Supercapacitor Materials and Fabrication
- Gas Sensing Nanomaterials and Sensors
- Advanced Battery Technologies Research
- Analytical Chemistry and Sensors
- Corrosion Behavior and Inhibition
- Extraction and Separation Processes
- Transition Metal Oxide Nanomaterials
- Catalytic Processes in Materials Science
- Advanced ceramic materials synthesis
- Carbon Nanotubes in Composites
- ZnO doping and properties
- Electrochemical Analysis and Applications
- Aluminum Alloys Composites Properties
- Graphene research and applications
- Hydrogen embrittlement and corrosion behaviors in metals
- MXene and MAX Phase Materials
- Ionic liquids properties and applications
- Concrete Corrosion and Durability
- Advanced Photocatalysis Techniques
- Copper-based nanomaterials and applications
- Conducting polymers and applications
- Advanced Sensor and Energy Harvesting Materials
- Catalysis and Oxidation Reactions
Harbin Institute of Technology
2016-2025
Heilongjiang Institute of Technology
2020-2022
Baker Hughes (United States)
2016-2021
Harbin University
2014-2019
Lawrence Berkeley National Laboratory
2016-2018
Harbin Electric Corporation (China)
2014
ConocoPhillips (Canada)
2012
Ohio University
2006-2011
Chinese Academy of Sciences
2008-2009
Canadian Light Source (Canada)
2009
Nanostructured amorphous and anatase TiO2 are both considered as high rate Li-insertion/extraction electrode materials. To clarify which phase is more desirable for lithium ion batteries with power density, we compare the electrochemical properties of by using anodic nanotube arrays (ATNTAs) electrodes. With same morphological features, capacity nanostructured higher than that due to Li-diffusion coefficient proved impedance spectra an ATNTA electrode. The also prove electronic conductivity...
Titania nanotube arrays (TNTA) were synthesized on a titanium substrate using anodic oxidation in an electrolyte containing ammonium fluoride and evaluated for low-temperature oxygen sensing. Their sensing properties tested at different temperatures (50, 100, 150, 200, 250 300 °C) when exposed to various concentrations. The as-prepared TNTA are amorphous exhibit much higher carrier concentration than that of annealed TNTA. Such show sensitivity TNTA, SrTiO(3) Ga(2)O(3) sensors. This sample...
A carbon-free nanocomposite consisting of MoO2 nanoparticles embedded between MoSe2 nanosheets, named MoO2@MoSe2, has been synthesized and demonstrated excellent electrochemical properties for lithium ion batteries. In such a composite, nanosheets provide flexible substrate nanoparticles; while act as spacers to retain the desired active surface electrolyte also introduce metallic conduction. addition, heterojunctions at interface self-built electric field promote lithiation/delithiation...
The unique features of SnS2 make it a sensitive material ideal for preparing high-performance nitrogen dioxide (NO2) gas sensors. However, sensors based on pristine tin disulfide (SnS2) fail to work at room temperature (RT) owing their poor intrinsic conductivity and weak adsorptivity toward the target gas, thereby impeding wide application. Herein, an ultrasensitive fully recoverable room-temperature NO2 sensor SnS2/SnS p-n heterojunctions with accumulation layer was fabricated. amounts can...
Abstract The capacitance of microsupercapacitors (MSCs) can double if both sides substrates are used to construct MSCs. Nevertheless, achieving electric connections MSCs through is a challenge due the difficulty in precisely positioning each MSC couple that has two same units on sides. In this work, taking advantage synchronous etching transparent polyethylene terephthalate by femtosecond laser pulses, double‐sided configuration attained with high precision alignment back‐to‐back couples and...
Tin disulfide (SnS2) has been extensively researched as a promising sensing material due to its large electronegativity, suitable band gap, earth abundance, and nontoxicity. However, the poor conductivity slow response/recovery speed at room temperature greatly hinder application in high-performance practical gas sensors. Herein, promote study of SnS2-based sensors, hierarchical SnS2/TiO2 heterostructure was synthesized used detect NO2 with help light illumination. Through synergistic effect...
The interaction between SnO2 and substrate in nanoparicles (NPs)−carbon nanotubes (CNTs) composite has been studied by X-ray absorption near-edge structures (XANES) at Sn M5,4, O K-edge C K-edge. NPs the have a rutile crystal structure with abundant surface states. variation resonance features of XANES strongly supports that crystalline interact CNTs through synergic bonding involving charge redistribution 2p-derived states valence conduction bands via interface facilitated oxidation...
We report an X-ray absorption near edge structure (XANES) investigation of several TiO2nanotube arrays, including the as-prepared nanotube arrays from electrochemical anodic oxidation Ti foil (as-prepared ATNTA), after annealing at 580 °C (annealed ATNTA) and annealed ATNTA intercalation with Li (Li-intercalated ATNTA). XANES O K-edge L3,2 K edges shows distinctly different spectral features for ATNTA, characteristic amorphous anatase structures, respectively. Intercalation into induces a...
Molybdenum disulfide with a layered structure and high theoretical capacity is attracting extensive attention for high-performance lithium-ion batteries. In this study, simple scalable method by freeze-drying of (NH4)2MoS4 dopamine mixed solutions along subsequent calcination developed to realize the self-assembly hierarchical MoS2/carbon composite nanosheets via effect dopamine-induced morphology transformation, in which ultrasmall few-layer MoS2 were homogeneously embedded into N-doped...
The self-powered UV photodetector (UVPD) has been considered as one of developing trends future wireless and independent operational needs, owing to its characteristic working without external power supply....
Wearable and portable microelectronic devices are attracting growing attention in the scientific technological fields. The preparation of high-performance micro energy storage self-sustaining flexible electronic systems still needs further studies. In this work, we have developed a method for asymmetric microsupercapacitors (AMSCs). MnO cathodes fabricated by laser irradiation, which converts manganese acetate into oxide on hydrophilic laser-induced graphene interdigitated electrodes. By...
Scanning transmission X-ray microscopy was used to chemically image RuO2 nano-layer coated multi-walled carbon nanotubes (RuO2/MWCNT) with a spatial resolution of 30 nm. X-Ray absorption near-edge structure spectroscopy individual RuO2/MWCNTs has been compared that MWCNTs and which confirms interacts through charge redistribution.
The electronic structures of carbon nanotube/RuO2 core/shell nanocomposite (RuO2 thin layer coated multiwalled nanotubes (MWNTs)) have been studied by X-ray absorption near-edge (XANES) at C K-edge, O and Ru M5,4- L3-edges. variation in white-line features the XANES these edges supports strongly that RuO2 interacts with MWNTs through Ru−O−C bonding, which also results charge redistribution between 2p-derived states MWNT conduction band RuO2. Such chemical bonding is necessary to immobilize...
The electronic structure at the Ni, Mn and O sites their evolution upon electrochemical lithiation of Li(1-x)Ni0.5Mn1.5O4 (LNMO) in a lithium ion battery has been explored using comprehensive X-ray absorption near edge spectroscopy (XANES) Ni L3,2- K-edges, with both surface-sensitive bulk-sensitive detection. It confirmed that reduction from Ni(4+) to Ni(2+) plays leading role charge compensation when voltage is above 4.5 V. Our study also unveils participation oxygen compensation....
Knowledge of the molecular composition and electronic structure electrified solid–liquid interfaces is key to understanding elemental processes in heterogeneous reactions. Using X-ray absorption spectroscopy interface-sensitive electron yield mode (EY-XAS), first-principles calculations, multiscale simulations, we determined chemical interfacial region a polycrystalline platinum electrode contact with aqueous sulfuric acid solution at potentials between hydrogen oxygen evolution We found...