A5067210841- Electrocatalysts for Energy Conversion
- Advanced battery technologies research
- Advanced Photocatalysis Techniques
- Catalytic Processes in Materials Science
- Fuel Cells and Related Materials
- CO2 Reduction Techniques and Catalysts
- Supercapacitor Materials and Fabrication
- MXene and MAX Phase Materials
- Metal-Organic Frameworks: Synthesis and Applications
- Covalent Organic Framework Applications
- 2D Materials and Applications
- Layered Double Hydroxides Synthesis and Applications
- Advancements in Battery Materials
- Carbon dioxide utilization in catalysis
- Catalysts for Methane Reforming
- Chalcogenide Semiconductor Thin Films
- Electrochemical Analysis and Applications
- Copper-based nanomaterials and applications
- Ammonia Synthesis and Nitrogen Reduction
- Advanced Battery Materials and Technologies
- Perovskite Materials and Applications
- Nanomaterials for catalytic reactions
- Catalysis and Hydrodesulfurization Studies
- Quantum Dots Synthesis And Properties
- Gas Sensing Nanomaterials and Sensors
Technical Institute of Physics and Chemistry
2015-2025
Chinese Academy of Sciences
2015-2025
TU Dresden
2017-2024
Jilin Normal University
2021-2022
China Earthquake Administration
2022
Center for Advancing Health
2019-2020
Northwest University
2015-2018
Ministry of Education of the People's Republic of China
2015-2018
Abstract Owing to its earth abundance, low kinetic overpotential, and superior stability, NiFe‐layered double hydroxide (NiFe‐LDH) has emerged as a promising electrocatalyst for catalyzing water splitting, especially oxygen evolution reaction (OER), in alkaline solutions. Unfortunately, result of extremely sluggish dissociation kinetics (Volmer step), hydrogen (HER) activity the NiFe‐LDH is rather poor environment. Here novel strategy demonstrated substantially accelerating by partially...
Ni3FeN nanoparticles with a particle size of ≈100 nm and thickness ≈9 are successfully synthesized by thermal ammonolysis ultrathin NiFe-layered double hydroxide nanosheets. The exhibit excellent catalytic performance high stability in electrochemical overall water splitting. As service to our authors readers, this journal provides supporting information supplied the authors. Such materials peer reviewed may be re-organized for online delivery, but not copy-edited or typeset. Technical...
Defect-rich ultrathin ZnAl-layered double hydroxide nanosheets are successfully prepared. Under UV-vis irradiation, these superior efficient catalysts for the photoreduction of CO2 to CO with water. The formed oxygen vacancies lead formation coordinatively unsaturated Zn(+) centers within nanosheets, responsible very high photocatalytic activities.
Faceted NiO nanoparticles preferentially exposing high surface energy planes demand attention due to their excellent electrocatalytic properties. However, the activity of faceted generally remains suboptimal large lateral size and thickness, which severely limits availability coordinatively unsaturated active reactive edge corner sites. Here, ultrafine nanosheets with a platelet ∼4.0 nm thickness (∼1.1 nm) stabilized by TiO2 were successfully prepared calcination monolayer layered double...
Recently, defect engineering has been used to intruduce half‐metallicity into selected semiconductors, thereby significantly enhancing their electrical conductivity and catalytic/electrocatalytic performance. Taking inspiration from this, we developed a novel bifunctional electrode consisting of two monolayer thick manganese dioxide (δ‐MnO 2 ) nanosheet arrays on nickel foam, using in‐situ method. The exposes numerous active sites for electrocatalytic rections displays excellent...
Abstract Two-dimensional nanofluidic channels are emerging candidates for capturing osmotic energy from salinity gradients. However, present two-dimensional architectures generally constructed by simple stacking of pristine nanosheets with insufficient charge densities, and exhibit low-efficiency transport dynamics, consequently resulting in undesirable power densities (<1 W m −2 ). Here we demonstrate MXene/Kevlar nanofiber composite membranes as high-performance generators. By mixing...
A series of novel CoFe-based catalysts are successfully fabricated by hydrogen reduction CoFeAl layered-double-hydroxide (LDH) nanosheets at 300-700 °C. The chemical composition and morphology the reaction products (denoted herein as CoFe-x) highly dependent on temperature (x). CO2 hydrogenation experiments conducted CoFe-x under UV-vis excitation. With increasing LDH-nanosheet temperature, show a progressive selectivity shift from CO to CH4 , eventually high-value hydrocarbons (C2+ )....
Owing to their earth abundance, high atom utilization, and excellent activity, single iron atoms dispersed on nitrogen-doped carbons (Fe-N-C) have emerged as appealing alternatives noble-metal platinum (Pt) for catalyzing the oxygen reduction reaction (ORR). However, ORR activity of current Fe-N-C is seriously limited by low density inferior exposure active Fe-Nx species. Here, a novel zinc-mediated template synthesis strategy demonstrated constructing densely exposed moieties hierarchically...
Nitrogen-doped graphitic carbon materials hosting single-atom iron (Fe-N-C) are major non-precious metal catalysts for the oxygen reduction reaction (ORR). The nitrogen-coordinated Fe sites described as first coordination sphere. As opposed to good performance in ORR, that evolution (OER) is extremely poor due sluggish O-O coupling process, thus hampering practical applications of rechargeable zinc (Zn)-air batteries. Herein, we succeed boosting OER activity Fe-N-C by additionally...
Metal single-atom catalysts (M-SACs) have emerged as an attractive concept for promoting heterogeneous reactions, but the synthesis of high-loading M-SACs remains a challenge. Here, we report multilayer stabilization strategy constructing in nitrogen-, sulfur- and fluorine-co-doped graphitized carbons (M = Fe, Co, Ru, Ir Pt). precursors are embedded into perfluorotetradecanoic acid multilayers further coated with polypyrrole prior to pyrolysis. Aggregation metals is thus efficiently...
Abstract Iron single atom catalysts (FeN 4 ) hosted in the micropores of N‐doped carbons offer excellent performance for oxygen reduction reaction (ORR). Achieving a high density FeN sites accessible ORR has proved challenging to date. Herein, simple surface NaCl‐assisted method towards microporous carbon electrocatalysts with an abundance catalytically is reported. Powder mixtures zeolitic imidazolate framework‐8 and NaCl are first heated 1000 °C N 2 , melting above 800 creating highly...
Abstract Metallic nickel nanostructures that were partially decorated by discrete oxide layers fabricated in situ reduction of calcinated Ni‐containing layered double hydroxide nanosheets, the structure which was confirmed extended X‐ray absorption fine spectroscopy, photoelectron and transmission electron microscopy. The existence abundant interfaces between surface Ni overlayer metallic altered geometric/electronic nanoparticles, making them apt for CO activation under light irradiation....
Solar-driven Fischer-Tropsch synthesis represents an alternative and potentially low-cost route for the direct production of light olefins from syngas (CO H2 ). Herein, a series novel Co-based photothermal catalysts with different chemical compositions are successfully fabricated by reduction ZnCoAl-layered double-hydroxide nanosheets at 300-700 °C. Under UV-vis irradiation, catalyst prepared 450 °C demonstrates remarkable CO hydrogenation performance, affording olefin (C2-4= ) selectivity...
Abstract The development of iron and nitrogen co‐doped carbon (FeNC) electrocatalysts for the oxygen reduction reaction (ORR) in proton‐exchange membrane fuel cells (PEMFCs) is a grand challenge due to low density accessible FeN 4 sites. Here, an situ trapping strategy using nitrogen‐rich molecules (e.g., melamine, MA) demonstrated enhance amount sites FeNC electrocatalysts. melamine can participate coordination Fe ions zeolitic imidazolate frameworks form 6 within precursors. These are...
A highly effective electrocatalyst is the central component of advanced electrochemical energy conversion. Recently, two-dimensional conjugated metal-organic frameworks (2D c-MOFs) have emerged as a class promising electrocatalysts because their advantages including 2D layered structure with high in-plane conjugation, intrinsic electrical conductivity, permanent pores, large surface area, chemical stability, and structural diversity. In this Review, we summarize recent advances c-MOF for...
The electrochemical N2 reduction reaction (NRR) under ambient conditions is attractive in replacing the current Haber-Bosch process toward sustainable ammonia production. Metal-heteroatom-doped carbon-rich materials have emerged as most promising NRR electrocatalysts. However, simultaneously boosting their activity and selectivity remains a grand challenge, while principle for precisely tailoring active sites has been elusive. Herein, we report first case of crystalline two-dimensional...
Abstract The crystalline‐amorphous (c–a) heterostructure is verified as a promising design for oxygen evolution reaction (OER) catalysts due to the concerted advantages of crystalline and amorphous phase. However, most heterostructures via asynchronous heterophase synthesis suffer from limited synergistic effect because sparse c–a interfaces. Here, highly efficient stable OER electrocatalyst with dense interfacial sites reported by hybridizing Ag NiCoMo oxides (NCMO) on nickel foam (NF)...
We boost the ORR performance of Fe–N–C electrocatalysts in acids by engineering highly accessible and dense surface single metal FeN 4 active sites.
Ruthenium (Ru) has been theoretically considered a viable alkaline hydrogen evolution reaction electrocatalyst due to its fast water dissociation kinetics. However, strong affinity the adsorbed hydroxyl (OH
Advanced supercapacitor electrodes require the development of materials with dense redox sites embedded into conductive and porous skeletons. Two-dimensional (2D) conjugated metal–organic frameworks (c-MOFs) are attractive electrode due to their high intrinsic electrical conductivities, large specific surface areas, quasi-one-dimensional aligned pore arrays. However, reported 2D c-MOFs still suffer from unsatisfying capacitances narrow potential windows because redox-inactive building blocks...
Abstract A general approach to promote IR light-driven CO 2 reduction within ultrathin Cu-based hydrotalcite-like hydroxy salts is presented. Associated band structures and optical properties of the materials are first predicted by theory. Subsequently, Cu 4 (SO )(OH) 6 nanosheets were synthesized found undergo cascaded electron transfer processes based on d - orbital transitions under infrared light irradiation. The obtained samples exhibit excellent activity for reduction, with a...