A5076576972- Perovskite Materials and Applications
- Surface Chemistry and Catalysis
- Chalcogenide Semiconductor Thin Films
- Electrocatalysts for Energy Conversion
- Quantum Dots Synthesis And Properties
- Catalytic Processes in Materials Science
- Advancements in Battery Materials
- Advanced battery technologies research
- Molecular Junctions and Nanostructures
- Graphene research and applications
- Advanced Battery Materials and Technologies
- Conducting polymers and applications
- Catalysis and Oxidation Reactions
- Fuel Cells and Related Materials
- Covalent Organic Framework Applications
- Topological Materials and Phenomena
- 2D Materials and Applications
- Solid-state spectroscopy and crystallography
- Advanced Condensed Matter Physics
- Extraction and Separation Processes
- Advanced Photocatalysis Techniques
- Catalysts for Methane Reforming
- Nanocluster Synthesis and Applications
- Advanced Battery Technologies Research
- Electrochemical Analysis and Applications
National Synchrotron Radiation Laboratory
2018-2025
University of Science and Technology of China
2007-2025
Chinese Academy of Sciences
2019-2023
Hefei University
2020
CAS Key Laboratory of Urban Pollutant Conversion
2019
The anode oxygen evolution reaction (OER) is known to largely limit the efficiency of electrolyzers owing its sluggish kinetics. While crystalline metal oxides are promising as OER catalysts, their amorphous phases also show high activities. Efforts produce have progressed slowly, and how an structure benefits catalytic performances remains elusive. Now first scalable synthesis NiFeMo oxide (up 515 g in one batch) presented with homogeneous elemental distribution via a facile supersaturated...
Hydroxide exchange membrane fuel cells offer possibility of adopting platinum-group-metal-free catalysts to negotiate sluggish oxygen reduction reaction. Unfortunately, the ultrafast hydrogen oxidation reaction (HOR) on platinum decreases at least two orders magnitude by switching electrolytes from acid base, causing high platinum-group-metal loadings. Here we show that a nickel-molybdenum nanoalloy with tetragonal MoNi
Developing highly efficient, selective and low-overpotential electrocatalysts for carbon dioxide (CO2) reduction is crucial. This study reports an efficient Ni single-atom catalyst coordinated with pyrrolic nitrogen pyridinic CO2 to monoxide (CO). In flow cell experiments, the achieves a CO partial current density of 20.1 mA cmgeo-2 at -0.15 V vs. reversible hydrogen electrode (VRHE). It exhibits high turnover frequency over 274,000 site-1 h-1 -1.0 VRHE maintains Faradaic efficiency (FECO)...
Intercalation-type layered oxides have been widely explored as cathode materials for aqueous zinc-ion batteries (ZIBs). Although high-rate capability has achieved based on the pillar effect of various intercalants widening interlayer space, an in-depth understanding atomic orbital variations induced by is still unknown. Herein, we design NH4+-intercalated vanadium oxide (NH4+-V2O5) ZIBs, together with deeply investigating role intercalant in terms orbital. Besides extended layer spacing, our...
Abstract Transition metal sulfides hold promising potentials as Li‐free conversion‐type cathode materials for high energy density lithium batteries. However, the practical deployment of these is hampered by their poor rate capability and short cycling life. In this work, authors take advantage hollow structure CuS nanoboxes to accommodate volume expansion facilitate ion diffusion during discharge–charge processes. As a result, achieve excellent performance (≈371 mAh g −1 at 20 C) ultra‐long...
Layered inorganic material, with large-area interlayer surface and interface, provides an essential material platform for constructing new configuration of functional materials. Herein, a layered pillared nanoclusters realizing high temperature thermal insulation performance is demonstrated the first time. Specifically, systematic synchrotron radiation spectroscopy finite element calculation analysis show that ZrOx served as "pillars" to effectively produce porous structures enough boundary...
P-type self-doping is known to hamper tin-based perovskites for developing high-performance solar cells by increasing the background current density and carrier recombination processes. In this work, we propose a gradient homojunction structure with germanium doping that generates an internal electric field across perovskite film deplete charge carriers. This reduces dark of over 2 orders magnitude trap order magnitude. The resultant exhibit higher power conversion efficiency 13.3% excellent...
Continuous breakthroughs have been achieved in the photoelectric conversion efficiency (PCE) of tin-based perovskite solar cells (TPSCs) recent years. Inspired by performance improvements observed during device storage, we identified beneficial light-induced interface doping (LIID) TPSCs. In situ analyses using X-ray photoelectron spectroscopy and ultraviolet reveal that ion migration oxidation at induce effects, enhancing carrier transport significantly boosting performance. By implementing...
Sb2(S1- xSe x)3 alloy material is a kind of encouraging for realistically apposite solar cell because it benefits from high absorption coefficient, suitable bandgap, superior stability, and plentiful elemental storage. Interfacial engineering vital effective charge carrier transport in cells, which could upgrade the photoelectric conversion efficiency (PCE). Herein, as an interlayer, indium-doped CdS thin film fabricated by chemical bath deposition found to remarkably enhance photovoltaic...
The growth of entirely synthetic two-dimensional (2D) materials could further expand the library naturally occurring layered solids and provide opportunities to design with finely tunable properties. Among them, synthesis elemental 2D is particular interest as they represent chemically simplest case serve a model system for exploring on-surface mechanism. Here, pure atomically thin blue phosphorus (BlueP) monolayer synthesized via silicon intercalation BlueP–Au alloy on Au(111). process...
Abstract The anode oxygen evolution reaction (OER) is known to largely limit the efficiency of electrolyzers owing its sluggish kinetics. While crystalline metal oxides are promising as OER catalysts, their amorphous phases also show high activities. Efforts produce have progressed slowly, and how an structure benefits catalytic performances remains elusive. Now first scalable synthesis NiFeMo oxide (up 515 g in one batch) presented with homogeneous elemental distribution via a facile...
Kagome nanoporous graphenes (NPGs) are fascinating due to their exotic electronic and magnetic properties. The emerging on-surface synthesis (mostly on metal surfaces) provides a new opportunity fabricate NPGs with atomic resolution. Previously the synthesized surfaces were largely heteroatom-doped suffer from morphological defects (evidently surfaces). of pristine NPG improved structural quality is extremely desirable. In this paper, using halogenated precursor, we report bottom-up...
The facile creation of high-performance single-atom catalysts (SACs) is intriguing in heterogeneous catalysis, especially on 2D transition-metal dichalcogenides. An efficient spontaneous reduction approach to access atomically dispersed iron atoms supported over defect-containing MoS2 nanosheets herein reported. Advanced characterization methods demonstrate that the isolated situate atop molybdenum and coordinate with three neighboring sulfur atoms. This Fe SAC delivers exceptional catalytic...
Abstract The electrical and mechanical properties of graphene‐based materials can be tuned by the introduction nanopores, which are sensitively related to size, morphology, density, location nanopores. synthesis low‐dimensional graphene nanostructures containing well‐defined nonplanar nanopores has been challenging due intrinsic steric hindrance. Herein, we report selective one‐dimensional (1D) nanoribbons (GNRs) periodic [14]annulene pores on Ag(111) two‐dimensional (2D) porous nanosheet...
Abstract High‐quality perovskite films are essential for achieving high performance of optoelectronic devices; However, solution‐processed known to suffer from compositional and structural inhomogeneity due lack systematic control over the kinetics during formation. Here, microscopic homogeneity is successfully enhanced by modulating conversion reaction using a catalyst‐like system generated foaming agent. The chemical evolution this catalytic revealed multimodal synchrotron toolkit with...
Pt is a well-known benchmark catalyst in the acidic oxygen reduction reaction (ORR) that drives electrochemical O2-to-H2O conversion with maximum chemical energy-to-electricity efficiency. Once dispersing bulk into isolated single atoms, however, preferential ORR pathway remains long-standing controversy due to their complex local coordination environment and diverse site density over substrates. Herein, using set of carbon nanotube supported Pt–N–C single-atom catalysts, we demonstrate how...
Solution process is a convenient and cost‐effective approach to the deposition of thin films for optoelectronic devices. The quality as‐prepared depends critically on applied precursor materials as well solvents. Herein, method developed synthesize Sb 2 (S 1− x Se ) 3 demonstrate role played by water during film formation. In synthesis, antimony trichloride, selenourea, thiourea used Sb, Se, S sources are dissolved in N , ‐dimethylformamide dimethyl sulfoxide mixed It found that tiny amount...
Realization of the Kagome antiferromagnetic (KAF) lattice is high interest because geometric frustration in expected to give rise highly degenerated ground states that may host exotic phases such as quantum spin liquid. Here we demonstrate design and synthesis a single-layer two-dimensional metal–organic framework (2D-MOF) containing Fe(II) ions assembled on Au(111) surface. First-principles calculations reveal are at state S = 2 coupled antiferromagnetically with nearest-neighboring...
On-surface synthesis is a powerful methodology for the fabrication of low-dimensional functional materials. The precursor molecules usually anchor on different metal surfaces via similar configurations. activation energies are therefore solely determined by chemical activity respective surfaces. Here, we studied influence detailed adsorption configuration energy We systematically desulfonylation homocoupling molecular Au(111) and Ag(111) found that lower inert than Ag(111). Combining...