A5018399570- Electrocatalysts for Energy Conversion
- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Advanced battery technologies research
- Perovskite Materials and Applications
- Electronic and Structural Properties of Oxides
- Advanced Photocatalysis Techniques
- Advanced Battery Technologies Research
- Catalytic Processes in Materials Science
- 2D Materials and Applications
- Superconductivity in MgB2 and Alloys
- X-ray Diffraction in Crystallography
- Quantum Dots Synthesis And Properties
- Ferroelectric and Piezoelectric Materials
- Fuel Cells and Related Materials
- Physics of Superconductivity and Magnetism
- Crystallization and Solubility Studies
- Magnetic and transport properties of perovskites and related materials
- Semiconductor materials and devices
- Supercapacitor Materials and Fabrication
- Gas Sensing Nanomaterials and Sensors
- Chalcogenide Semiconductor Thin Films
- Iron-based superconductors research
- Conducting polymers and applications
- Advanced Memory and Neural Computing
Hong Kong Polytechnic University
2016-2025
Nanjing Forestry University
2023-2025
Cornell University
2008-2025
NARI Group (China)
2022-2025
Fudan University
2016-2025
Zhejiang University
2018-2025
Huashan Hospital
2022-2025
Materials Science & Engineering
2016-2025
Sichuan University
2025
Physical Sciences (United States)
2024
Thin-film photovoltaics based on alkylammonium lead iodide perovskite light absorbers have recently emerged as a promising low-cost solar energy harvesting technology. To date, the layer in these efficient cells has generally been fabricated by either vapor deposition or two-step sequential process. We report that flat, uniform thin films of this material can be deposited one-step, solvent-induced, fast crystallization method involving spin-coating DMF solution CH3NH3PbI3 followed...
Abstract Thin‐film photovoltaics based on alkylammonium lead iodide perovskite light absorbers have recently emerged as a promising low‐cost solar energy harvesting technology. To date, the layer in these efficient cells has generally been fabricated by either vapor deposition or two‐step sequential process. We report that flat, uniform thin films of this material can be deposited one‐step, solvent‐induced, fast crystallization method involving spin‐coating DMF solution CH 3 NH PbI followed...
Tin-based perovskites with excellent optoelectronic properties and suitable band gaps are promising candidates for the preparation of efficient lead-free perovskite solar cells (PSCs). However, it is challenging to prepare highly stable tin-based PSCs because Sn2+ in can be easily oxidized Sn4+ upon air exposure. Here we report fabrication air-stable FASnI3 by introducing hydroxybenzene sulfonic acid or its salt as an antioxidant additive into precursor solution along excess SnCl2 . The...
NASICON (Na+ super ionic conductor) structures of NaxMV(PO4)3 (M = Mn, Fe, Ni) were prepared, characterized by aberration-corrected STEM and synchrotron radiation, demonstrated to be durable cathode materials for rechargeable sodium-ion batteries. In Na4MnV(PO4)3, two redox couples Mn3+/Mn2+ V4+/V3+ are accessed with voltage plateaus located at 3.6 3.3 V a capacity 101 mAh g-1 1 C. Furthermore, the Na4MnV(PO4)3 delivers high initial efficiency 97%, long durability over 1000 cycles, good rate...
We report the discovery of room temperature in-plane ferroelectricity in van der Waals In 2 Se 3 with β′ phase.
Ionic liquids consisting of bis(fluorosulfonyl)imide (FSI–) anion show promise as electrolytes for Li-ion-based electric storage devices, they exhibit relatively low viscosity, high chemical stability, and form robust solid–electrolyte interphase (SEI) protecting liquid electrolyte from further breakdown on the electrode. These ionic have been reported to inhibit dendrite formation lithium metal lithiated graphite electrodes, which also relates unusual SEI properties. In this study, we...
Work function strongly impacts the surficial charge distribution, especially for metal-support electrocatalysts when a built-in electric field (BEF) is constructed. Therefore, studying correlation between work and BEF crucial understanding intrinsic reaction mechanism. Herein, we present Pt@CoOx electrocatalyst with large difference (ΔΦ) strong BEF, which shows outstanding hydrogen evolution activity in neutral medium 4.5-fold mass higher than 20 % Pt/C. Both experimental theoretical results...
Abstract Organic–inorganic hybrid perovskites are exciting candidates for next-generation solar cells, with CH 3 NH PbI being one of the most widely studied. While there have been intense efforts to fabricate and optimize photovoltaic devices using , critical questions remain regarding crystal structure that governs its unique properties perovskite material. Here we report unambiguous evidence crystallographic twin domains in tetragonal observed low-dose transmission electron microscopy...
The strength of electronic correlations dictates the transport properties oxide interfaces.
An optimized solid electrolyte interphase is the key to stabilization of microparticle anodes.
Abstract Graded bulk-heterojunction (G-BHJ) with well-defined vertical phase separation has potential to surpass classical BHJ in organic solar cells (OSCs). In this work, an effective G-BHJ strategy via nonhalogenated solvent sequential deposition is demonstrated using nonfullerene acceptor (NFA) OSCs. Spin-coated OSCs deliver outstanding 17.48% power conversion efficiency (PCE). Depth-profiling X-ray photoelectron spectroscopy (DP-XPS) and angle-dependent grazing incidence diffraction...
Abstract Owing to their large absorption cross-sections and high photoluminescence quantum yields, lead halide perovskite dots (PQDs) are regarded as a promising candidate for various optoelectronics applications. However, easy degradation of PQDs in water humid environment is critical hindrance Here we develop Pb-S bonding approach synthesize water-resistant perovskite@silica nanodots keeping emission over six weeks. A two-photon whispering-gallery mode laser device made these ultra-stable...
Maintaining the stability of tin halide perovskites is a major challenge in developing lead-free perovskite solar cells (PSCs). Adding extra SnX2 (X = F, Cl, or Br) precursor solution to inhibit Sn2+ oxidation an essential strategy improve device efficiency and stability. However, on surface grains tends prohibit charge transfer across films. Here, we report coadditive engineering approach by introducing antioxidant gallic acid (GA) together with SnCl2 performance tin-based PSCs. The...
Guaranteeing satisfactory catalytic behavior while ensuring high metal utilization has become the problem that needs to be addressed when designing noble-metal-based catalysts for electrochemical reactions. Here, well-dispersed ruthenium (Ru) based clusters with adjacent Ru single atoms (SAs) on layered sodium cobalt oxide (Ru/NC) are demonstrated as a superb electrocatalyst alkaline HER. The Ru/NC catalyst demonstrates an activity increase by factor of two relative commercial Pt/C. Operando...
Sn-Pb mixed perovskites with bandgaps in the range of 1.1-1.4 eV are ideal candidates for single-junction solar cells to approach Shockley-Queisser limit. However, efficiency and stability mixed-perovskite (PSCs) still lag far behind those Pb-based counterparts due easy oxidation Sn2+ . Here, a reducing agent 4-hydrazinobenzoic acid is introduced as an additive along SnF2 suppress Meanwhile, vertical Pb/Sn compositional gradient formed spontaneously after antisolvent treatment different...
Plastic valorization presents a significantly untapped opportunity to address environmental issues while creating the necessary economic push for circular carbon economy. Compared with conventional routes processing plastics (e.g., pyrolysis and gasification), photoreforming strategy, namely, photocatalytic plastic oxidation paired water splitting, aims achieve into commodity chemicals under mild conditions offering hydrogen fuels. Here, we implement MoS2-tipped CdS nanorod photocatalysts in...
PtM3 alloys have demonstrated superior oxygen reduction reaction (ORR) activity due to the strong strain effect caused by non-noble metal cores. However, serious corrosion of metals in acid solutions is still challenging. Herein, a hollow porous N-doped carbon sphere-encapsulated PtCo3 intermetallic electrocatalyst (O-PtCo3@HNCS) successfully prepared through Co pre-embedding and subsequent impregnation–reduction method. The step responsible for formation abundant mesopores, process leads...
Seawater electrolysis is promising for green hydrogen production but hindered by the sluggish reaction kinetics of both cathode and anode, as well detrimental chlorine chemistry environment. Herein, a self-supported bimetallic phosphide heterostructure electrode strongly coupled with an ultrathin carbon layer on Fe foam (C@CoP-FeP/FF) constructed. When used oxygen evolution reactions (HER/OER) in simulated seawater, C@CoP-FeP/FF shows overpotentials 192 mV 297 at 100 mA cm-2 , respectively....
Abstract Electrocatalytic CO 2 reduction at near-ambient temperatures requires a complex inventory of protons, hydroxyls, carbonate ions and alkali-metal the cathode anode to be managed, necessitating use ion-selective membranes regulate pH. Anion-exchange provide an alkaline environment, allowing low cell voltages suppression hydrogen evolution while maintaining high conversion efficiencies. However, local conditions presence alkali cations lead problematic formation even precipitation....