A5041868627- Electrocatalysts for Energy Conversion
- Catalytic Processes in Materials Science
- Advanced battery technologies research
- Supercapacitor Materials and Fabrication
- Catalysts for Methane Reforming
- Copper-based nanomaterials and applications
- Advanced Photocatalysis Techniques
- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Catalysis for Biomass Conversion
- Electrochemical Analysis and Applications
- Mesoporous Materials and Catalysis
- Catalysis and Oxidation Reactions
- Fuel Cells and Related Materials
- Microstructure and Mechanical Properties of Steels
- Pickering emulsions and particle stabilization
- Electronic and Structural Properties of Oxides
- Thermal and Kinetic Analysis
- Catalysis and Hydrodesulfurization Studies
- Aerogels and thermal insulation
- TiO2 Photocatalysis and Solar Cells
- MXene and MAX Phase Materials
- Surfactants and Colloidal Systems
- Covalent Organic Framework Applications
- Thermochemical Biomass Conversion Processes
Tsinghua University
2024
Helmholtz Centre for Environmental Research
2024
Zhengzhou Business University
2024
Max Planck Institute of Microstructure Physics
2024
Shanghai Electric (China)
2023-2024
Hefei University
2023-2024
Martin Luther University Halle-Wittenberg
2018-2023
Luther University
2023
Wittenberg University
2023
Fraunhofer Center for Silicon Photovoltaics
2023
Abstract 3D hierarchical heterostructure NiFe LDH@NiCoP/NF electrodes are prepared successfully on nickel foam with special interface engineering and synergistic effects. This research finds that the as‐prepared have a more sophisticated inner structure intensive than simple physical mixture. The require an overpotential as low 120 220 mV to deliver 10 mA cm −2 for hydrogen evolution reaction (HER) oxygen (OER) in 1 m KOH, respectively. Tafel electrochemical impedance spectroscopy further...
Abstract Reducing green hydrogen production costs is essential for developing a economy. Developing cost‐effective electrocatalysts water electrolysis thus of great research interest. Among various material candidates, transition metal phosphides (TMP) have emerged as robust bifunctional both the evolution reaction (HER) and oxygen (OER) due to their phases tunable electronic structure. Recently, heterostructured catalysts exhibited significantly enhanced activities toward HER/OER. The...
Antiferromagnetic spintronics
Pt single atoms have unique power in enhancing and accelerating OER active NiOOH phase transformation from NiO.
A one-step carbothermal reduction method has been developed for the preparation of hierarchical porous materials. In this method, CMK-3 acts both as a template casting structure and reducing agent reaction. Hierarchical MoO2 nanotubes prepared through exhibit high charge/discharge capacities rate capabilities when used an anode material lithium ion batteries. Cycled at current densities 0.1 1.0 g−1, delivers discharge 720 530 mA h g−1 after 70 cycles, respectively. The Li-ion insertion...
Zinc-air batteries (ZABs) are vulnerable to the ambient environment (e.g., humidity and CO2 ), have serious selfdischarge issues, resulting in a short shelf life. To overcome these challenges, near-neutral quaternary ammonium (QA) functionalized polyvinyl alcohol electrolyte membrane (different from conventional alkali-type membranes) has been developed. QA functionalization leads formation of interconnected nanochannels by creating hydrophilic/-phobic separations at nanoscale. These...
Developing low-cost and high-performance bifunctional oxygen electrocatalysts is essential for commercial realization of regenerative fuel cells rechargeable metal air batteries. Iron carbide (Fe3C) an ideal electrocatalyst candidate; however, its poor evolution reaction (OER) activity stability make it serve only as a unifunctional reduction (ORR) electrocatalyst. Here, we report robust consisting manganese–iron binary (MnxFe3–xC) nanoparticles armored by nitrogen-doped graphitic carbon...
Transition-metal phosphides (TMP) prepared by atomic layer deposition (ALD) are reported for the first time. Ultrathin Co-P films were deposited using PH3 plasma as phosphorus source and an extra H2 step to remove excess P in growing films. The optimized ALD process proceeded self-limited layer-by-layer growth, highly pure smooth. via exhibited better electrochemical photoelectrochemical hydrogen evolution reaction (HER) activities than similar traditional post-phosphorization method....
Uniform hierarchical MoO2/C spheres have been prepared through calcination of a MoO3/resin precursor generated via simple hydrothermal method in the presence resorcinol, formaldehyde and (NH4)6Mo7O24·4H2O. The carbon formed situ by carbonization resorcinol–formaldehyde resin N2 atmosphere reduce MoO3 into MoO2 nanoparticles. characterized XRD, SEM, HR-TEM TGA. Used as an anode material, these exhibit not only good rate capability but also high cycling performance. These are promising...
Abstract The oxygen‐evolution reaction (OER) is a bottleneck because of significant overpotential loss in water electrolysis. Currently, MnO 2 ‐based materials are promising candidates for OER electrocatalysts owing to their abundance and excellent properties. Herein, hydrothermal method was used prepare nanowires with different diameters. Furthermore, an impregnation applied dope Ca Ag ions. Characterization by TEM, XRD, Raman, X‐ray photoelectron spectroscopy (XPS), N adsorption,...
Facile synthesis of metal–organic frameworks was demonstrated <italic>via</italic> directly adding organic ligands solution into the newly synthesized copper/zinc hydroxide solution.
Owing to their intriguing properties, aerogels with rich and hierarchical pore systems are best appreciated in catalysis, sensing, separation technologies. Herein, a comprehensive study is presented for inorganic monolithic aerogel of Ag doped MnO2 (Ag-MnO2), synthesized solely out nanowires diameter ∼10 nm. We demonstrated 3D image the full bulk structure using X-ray computed tomography (μCT), providing concise statistical description its porous first time. Interestingly, flow-through...
Oxygen evolution reaction (OER) has been considered as the bottleneck step in water electrolysis to simultaneously produce hydrogen and oxygen. The earth abundant first-row metal oxides such manganese oxide have found very active after anchoring nanoparticular noble metals Au, Pd Pt onto its surface. Recent reports demonstrated that Au can increase turnover frequency (TOF) of MnOx more than 10 times for OER due unique local interaction between MnOx. Here, we conducted a detailed comparative...
Biomass derived flexible and rechargeable Zn–air batteries achieved a record round-trip efficiency of 75%.
We report a redox-responsive Pickering emulsion stabilized by selenium-based surfactant and alumina nanoparticles, in which separation of oil phase without residual recycling the emulsifiers from aqueous is possible after demulsification.
The TOF value of the ultra-tiny Co(OH)<sub>2</sub>/GO nanocomposite electrocatalyst is 2.7 times higher than that hydrothermally treated Co<sub>3</sub>O<sub>4</sub>/GO.
Abstract The stability of electrocatalysts grown on substrates is a significant challenge for the construction 3‐dimensional (3D) stainless‐steel (SS)‐based electrodes highly efficient water splitting. This paper presents an and universal process to enhance interfacial interaction between SS active preparation 3D through formation network carbon nanotubes (CNTs) SS. Nanoscale X‐ray computed tomography focused ion beam are used visualize interface CNTs SS, structure CNT/SS electrodes....
Bile salts (BS), one of the biological amphiphiles, are usually used as solubilizing/emulsifying agents lipids or drugs. However, BS such sodium deoxycholate (NaDC) can't stabilize an oil-in-water (O/W) emulsion alone due to its unusual molecular structure. In this paper we report that these emulsifiers with poor emulsifying ability can be transformed highly efficient by combining negatively charged particles (silica montmorillonite). Both together synergistically co-stabilize emulsions at...
The CO catalytic oxidation at ambient temperature and high space velocity was studied over the Pd\bond Cu/MOx (MOx=TiO2 Al2O3) catalysts. higher Brunauer–Emmett–Teller area surface of Al2O3 support facilitates dispersion Pd2+ species, presence Cu2Cl(OH)3 accelerates re-oxidation Pd0 to Cu/Al2O3 catalyst, which contributed better performance oxidation. poorer activity Cu/TiO2 catalyst attributed lower species because less non-formation species. saturated moisture showed a negative effect on...
A ternary Au/ZnO@ZIF-8 nanocomposite was prepared through <italic>in situ</italic> Au nanoparticles encapsulation from the ZnO surface into ZIF-8 crystal matrix during its nucleation process, which exhibited high catalytic activity for reduction of <italic>p</italic>-nitrophenol.