A5000159938- Advanced Battery Materials and Technologies
- Advancements in Battery Materials
- Advanced Battery Technologies Research
- Quantum Dots Synthesis And Properties
- Perovskite Materials and Applications
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Fuel Cells and Related Materials
- Advanced battery technologies research
- Chalcogenide Semiconductor Thin Films
- Electrocatalysts for Energy Conversion
- Copper-based nanomaterials and applications
- Membrane-based Ion Separation Techniques
- Advanced Photocatalysis Techniques
- biodegradable polymer synthesis and properties
- Carbon dioxide utilization in catalysis
- Optical properties and cooling technologies in crystalline materials
- Conducting polymers and applications
- Advancements in Solid Oxide Fuel Cells
- Polymer Foaming and Composites
- Supercapacitor Materials and Fabrication
- Luminescence Properties of Advanced Materials
- Solid-state spectroscopy and crystallography
- 2D Materials and Applications
- Advanced Fiber Optic Sensors
Sun Yat-sen University
2017-2025
Sun Yat-sen University Cancer Center
2023-2025
University of Pittsburgh
2015-2024
Hunan University of Traditional Chinese Medicine
2024
Hunan Institute of Mental Health
2024
Kunming University of Science and Technology
2024
State Key Laboratory of Optoelectronic Materials and Technology
2017-2023
Cancer Institute (WIA)
2023
Beijing Institute of Technology
2013-2020
Nanjing Tech University
2020
All-inorganic lead halide perovskites demonstrate improved thermal stability over the organic–inorganic perovskites, but cubic α-CsPbI3 with most appropriate bandgap for light harvesting is not structurally stable at room temperature and spontaneously transforms into undesired orthorhombic δ-CsPbI3. Here, we present a new member of black-phase thin films all-inorganic high-efficiency photovoltaics, γ-CsPbI3 intrinsic thermodynamic ideal electronic structure. Exempt from introducing organic...
Abstract An HBr‐assisted slow cooling method is developed for the growth of centimeter‐sized Cs 4 PbBr 6 crystals. The obtained crystals show strong green photoluminescence with absolute quantum yields up to 97%. More importantly, evolution process and structural characterizations support that nonstoichiometry initial induce formation nanosized CsPbBr 3 nanocrystals in crystalline matrices. Furthermore, high efficiency wide color gamut prototype white light‐emitting diode devices are also...
The power conversion efficiency of organic-inorganic hybrid perovskite solar cells has increased rapidly, but the device stability remains a big challenge. Previous studies show grain boundary (GB) can facilitate ion migration and initiate degradation. Herein, methimazole (MMI) is employed for first time to construct surface "patch" by in situ converting residual PbI
Despite the recent surge of interest in inorganic lead halide perovskite nanocrystals, there are still significant gaps their stability disturbance and understanding destabilization, assembly, growth processes. Here, we discover that polar solvent molecules can induce lattice distortion ligand-stabilized cubic CsPbI3, leading to phase transition into orthorhombic phase, which is unfavorable for photovoltaic applications. Such triggers dipole moment on CsPbI3 nanocubes, subsequently initiates...
Because of the superior optical properties and potential applications in display technology, colloidal synthesis halide perovskite quantum dots has been intensively studied. Although great successes have made fabrication green emissive CH3NH3PbBr3 dots, stable iodide-based CH3NH3PbI3 remains a challenge because their sensitivity to moisture open air. Even glovebox, obtained from N,N-dimethylformamide suffer instability caused by fast degradation within days weeks. In this work, we...
Abstract Metallic Li is considered the most promising anode material for high‐energy density batteries due to its high theoretical capacity and low electrochemical potential. However, commercialization of has been hampered by safety issue associated with Li‐dendrite growth resulting from uneven Li‐ion deposition an unstable solid electrolyte interphase (SEI). Herein, in situ prepared 10 nm thin film covalent organic framework (COF) uniformly covered on (COF‐Li) used as artificial SEI layer...
There is strong interest in improving the environmental stability of hybrid perovskite solar cells while maintaining high efficiency. Here, we solve this problem by using epilayers a wide-band-gap 1D lead iodide perovskitoid structure, based on short organic cation, namely, thiazole ammonium (TA) form (TAPbI3). The capping layer serves to passivate three-dimensional (3D) films, which promotes charge transport, improves carrier lifetime, and prevents ion migration 3D (MA,FA)PbI3 film (MA =...
Zn-doped CdS nanoarchitectures with different Zn content are synthesized by a simple hydrothermal method water as the only solvent. The prepared samples characterized X-ray powder diffraction, scanning electron microscopy, UV–vis diffuse reflectance spectra, Brunauer–Emmett–Teller measurement, and photoelectron spectroscopy, while photocatalytic activities tested degradation of rhodamine-B under visible-light irradiation. results show that small amount doping can lead to an enhanced...
Cu2ZnSnS4 (CZTS) films were prepared by ultrasonic spray pyrolysis on FTO (SnO2 : F glass) substrates. The effect of substrate temperatures the phases, morphologies and photoelectrochemical properties CZTS was investigated. X-ray diffraction, Raman spectrum energy-dispersive spectrometry used to confirm phases films. samples at 400 450 °C exhibited a higher photocurrent than 350 500 °C. Moreover, band positions measured facile Mott–Schottky method for first time. Different from previous...
Abstract We report a combined experimental and theoretical study of the synthesis CH 3 NH PbBr nanoplatelets through self‐organization. Shape transformation from spherical nanodots to square or rectangular can be achieved by keeping preformed colloidal nanocrystals at high concentration (3.5 mg mL −1 ) for days, combining with The average thickness resulting is similar size original nanoparticles, we also noticed several circular holes, suggesting that shape experienced self‐organization...
Room-temperature-operated continuous-wave lasers have been intensively pursed in the field of on-chip photonics. The realization a laser strongly relies on development gain materials. To date, there is still huge gap between current materials and commercial requirements. In this work, we demonstrate at room temperature using rationally designed situ fabricated perovskite quantum dots polyacrylonitrile films distributed feedback cavity. achieved threshold values are 15, 24, 58 W/cm2 for...
Phosphonated phenol-formaldehyde was first introduced into polybenzimidazole to obtain a high-temperature proton exchange membrane which synchronously has sufficient intrinsic protonic conductors and long-range transport channels.
Abstract Solid‐state lithium metal batteries (SSLMBs) are highly desirable for energy storage because of the urgent need higher density and safer batteries. However, it remains a critical challenge stable cycling SSLMBs at low temperature. Here, viscoelastic polyether‐ b ‐amide (PEO‐ ‐PA) based composite solid‐state electrolyte is proposed through one‐pot melt processing without solvent to address this key process. By adjusting molar ratio PEO‐ ‐PA bis(trifluoromethanesulphonyl)imide...
A novel acid-base HT-PEM consisting of PI-COOH and OPBI was prepared. The OPBI-50PI-COOH composite membrane delivered superior cell performance durability under low PA uptake due to the continuous hydrogen bond network between PI-COOH.
Abstract Polymeric binders account for only a small part of the electrodes in lithium‐ion batteries, but contribute an important role adhesion and cohesion during charge/discharge processes to maintain integrity electrode structure. Therefore, polymeric have become one key materials improve properties batteries. Qualified polymer should not require good bond strength, mechanical properties, conductivity, chemical functionality processing performance, also be environmentally friendly low...
Biodegradable polymers have become a topic of great scientific and industrial interest due to their environmentally friendly nature. For the benefit market economy environment, biodegradable materials should play more critical role in packaging materials, which currently account for than 50% plastic products. However, various challenges remain practical applications. Particularly pertaining poor oxygen/moisture barrier issues, greatly limit application current food packaging. In this review,...
Herein, it is demonstrated how the photocatalytic activity and stability of a semiconductor can be enhanced through metal doping simultaneous deposition in case CdS. The CdS which doped simultaneously deposited by Ag (denoted as Ag–CdS thereafter) successfully prepared one-step hydrothermal method. samples have under simulated sunlight compared with pure Ag-deposited for organic pollutant degradation H2 production from water splitting. main reason due to fast transfer photogenerated...
The efficiencies of organic–inorganic lead halide perovskite solar cells (PSCs) have significantly increased so far, but the long‐term stability PSCs needs to be urgently improved. In this work, a novel and convenient strategy is developed improve PSCs’ by introducing thiourea into perovskite. Thiourea passivates formation PbS bond on outermost layer lath‐shaped grain among perovskites, which contributes improvement oxygen, light, thermal stability, little hysteresis. mechanism elucidated...
Nanofiltration membranes (NFMs) with a high water permeation flux and salt rejection are extremely desirable due to their low energy consumption superior separation efficiency in practical applications. Herein, cellulose nanocrystals (CNCs) prepared by the sulfuric acid hydrolysis of microcrystalline were directly incorporated aqueous solution piperazine for fabricating thin film nanocomposite (TFN) NFMs interfacial polymerization. The as-fabricated TFN exhibit obviously rougher more...
How to take advantage of CO2 has been one the main issues be addressed around world. Although there are many methods convert organic fuel, efficiency is still not high enough for practical application. Herein, we have accomplished better conversion by combination metal electrode and semiconductor thin films responsive visible light. First, deposition p-type n-type Cu2O onto a Cu substrate successfully achieved. Then, prepared Cu/Cu2O samples used catalytic reduction in photoelectrochemical...