A5101537479- Catalytic Processes in Materials Science
- Advanced Photocatalysis Techniques
- Advancements in Battery Materials
- Supercapacitor Materials and Fabrication
- TiO2 Photocatalysis and Solar Cells
- Semiconductor materials and devices
- Conducting polymers and applications
- Transition Metal Oxide Nanomaterials
- Gas Sensing Nanomaterials and Sensors
- Advanced Battery Materials and Technologies
- Electronic and Structural Properties of Oxides
- Copper-based nanomaterials and applications
- Perovskite Materials and Applications
- ZnO doping and properties
- Quantum Dots Synthesis And Properties
- Graphene research and applications
- Chalcogenide Semiconductor Thin Films
- Advanced Battery Technologies Research
- Polyoxometalates: Synthesis and Applications
- Synthesis and properties of polymers
- Electrocatalysts for Energy Conversion
- Fuel Cells and Related Materials
- Advanced ceramic materials synthesis
- Microbial Fuel Cells and Bioremediation
- Concrete Properties and Behavior
Chinese Research Academy of Environmental Sciences
2024
Institute of Process Engineering
2024
Chongqing Normal University
2015-2024
Guangdong Technion-Israel Institute of Technology
2024
University of Chinese Academy of Sciences
2024
Nanjing Tech University
2021-2023
Tongji University
2022
China Jiliang University
2022
The Synergetic Innovation Center for Advanced Materials
2021-2022
Chongqing University
2020-2021
In this communication, we successfully synthesized a new SnO2 nanoarchitecture: extremely thin sheets, with minimum thicknesses of 1.5−3.0 nm. The products were prepared through facile hydrothermal treatment using tin dichloride as the precursor. Planar or scrolled sheets carefully examined by transmission electron microscopy. assemblies these have high BET surface area 180.3 m2/g and extraordinarily large pore volume 1.028 cm3/g. They also exhibit lithium storage capacity excellent...
The long-standing issues of low intrinsic electronic conductivity, slow lithium-ion diffusion and irreversible phase transitions on deep discharge prevent the high specific capacity/energy (443 mAh g−1 1,550 Wh kg−1) vanadium pentoxide from being used as cathode material in practical battery applications. Here we develop a method to incorporate graphene sheets into nanoribbons via sol–gel process. resulting graphene-modified nanostructured hybrids contain only 2 wt. % graphene, yet exhibits...
Freestanding cathode materials with sandwich‐structured characteristic are synthesized for high‐performance lithium–sulfur battery. Sulfur is impregnated in nitrogen‐doped graphene and constructed as primary active material, which further welded the carbon nanotube/nanofibrillated cellulose (CNT/NFC) framework. Interconnected CNT/NFC layers on both sides of layer uniquely to entrap polysulfide species supply efficient electron transport. The 3D composite network creates a hierarchical...
Abstract For the performance improvement of microbial fuel cells (MFCs), anode becomes a breakthrough point due to its influence on bacterial attachment and extracellular electron transfer (EET). On other level, carbon materials possess following features: low cost, rich natural abundance, good thermal chemical stability, as well tunable surface properties spatial structure. Therefore, development carbon‐based composites has flourished in MFCs during past years. In this review, major used...
Abstract Polypyrrole complex nitrogen-doped porous carbon matrix (PPy/N-PCM) was synthesized by a simple two-step method. Firstly, graphene oxide prepared the modified Hummers Secondly, compounded on substrate, and with high specific surface area obtained through high-temperature carbonization KOH activation, polypyrrole used as nitrogen source for final composite material. The structure characterization of material shows that has obvious structure, nanospheres grow uniformly surface....
The roles of deposited Pt clusters and adsorbed O2 in the photoactivity anatase TiO2 (101) surfaces have been studied using density functional theory. only adsorbs to when excess negative charge is available form O–Ti bonds, which can be provided by a photoexcited electron or subsurface oxygen vacancy, cases adsorption energies are −0.94 −2.52 eV, respectively. When near defect, it scavenges extra creates hole that annihilate excited electrons. In aqueous solutions, interactions with surface...
Freestanding LiCoO2/multiwall carbon nanotube/nanocellulose fibril (LCO-MWCNT-NCF) electrodes are fabricated by a vacuum filtration technique. The electrode has high LCO loading of 20 mg/cm2 with excellent flexibility, uniform material distribution, and low surface resistivity. When coated 2 ALD cycles AlF3, LCO-MWCNT-NCF specific capacity 216 mAh/g at 4.7 V. freestanding AlF3-coated preserves 75.7% its initial after 100 70% 160 charge discharge. In contrast, Al2O3 cannot be cycled above 4.5...
The electrochemical properties of high-voltage (4.7 V) LiCoO<sub>2</sub> cathode materials with Al doping and a conformal Al<sub>2</sub>O<sub>3</sub> coating by atomic layer deposition were studied in this paper.
Growth of Ptn (n ≤ 37) clusters on the defect-free TiO2 anatase (101) surface has been studied using ab initio pseudopotential calculations based density functional theory. Several initial configurations for 1, 2, 7, 10, and 37 atoms were relaxed to determine most stable structures. All final optimized structures are three dimensional, suggesting that formation island-like particles is favored over planar monolayers, as verified experimentally Pt atomic layer deposition high-resolution...
Amorphous SnO2 (a-SnO2) thin films were conformally coated onto the surface of reduced graphene oxide (G) using atomic layer deposition (ALD). The electrochemical characteristics a-SnO2/G nanocomposites then determined cyclic voltammetry and galvanostatic charge/discharge curves. Because ALD ultrathin amorphous, impact large volume expansion upon cycling was greatly reduced. With as few five formation cycles best reported in literature, reached stable capacities 800 mAh g(-1) at 100 mA 450...
Amorphous V<sub>2</sub>O<sub>5</sub> (a-V<sub>2</sub>O<sub>5</sub>) thin films were conformally coated onto the surface of hydroxyl (–OH) functionalized multi-walled carbon nanotubes (CNTs) and nanotube (CNT) paper using atomic layer deposition (ALD).
Abstract The hole transport material (HTM)-free perovskite solar cells (PSCs) have attracted widespread interest due to enhanced stability and lowered cost as compared the sandwich-type PSCs with an organic conductor. For absorber layer, CsPbI 3 has become a competitive candidate for its good chemical-components stability, excellent optoelectronic properties most proper bandgap among inorganic halide perovskites. However, power conversion efficiency of -based HTM-free is still much inferior...
Abstract Primary titania nanoparticles were coated with ultrathin alumina films using Atomic Layer Deposition (ALD). The deposited highly uniform and conformal an average growth rate of 0.2 nm per coating cycle. eliminated the surface photocatalytic activity nanoparticles, while maintained their original extinction efficiency ultraviolet light. Deposited provided a physical barrier that effectively prevented from oxidizing organic material whereas conserving its bulk optical properties....
SnO2 has been considered as one of the most promising anode materials for Li-ion batteries due to its theoretical ability store up 8.4 Li(+). However, it suffers from poor rate performance and short cycle life low intrinsic electrical conductivity particle pulverization caused by large volume change upon lithiation/delithiation. Here, we report a facile synthesis graphene/SnO2 xerogel hybrids using epoxide-initiated gelation method. The synthesized hybrid (19% xerogel) exhibit excellent...
Sb<sub>2</sub>O<sub>3</sub> films are synthesized and characterized as electrocatalysts showing efficient H<sub>2</sub>O<sub>2</sub> production accumulation properties.
Lightweight, high-capacity and high-power LiCoO<sub>2</sub> (LCO)/multi-wall carbon nanotube (MWCNT) free-standing electrodes are fabricated by a simple paper-making process.