A5039924455- Fuel Cells and Related Materials
- Electrocatalysts for Energy Conversion
- Advanced Battery Technologies Research
- Conducting polymers and applications
- Electrochemical Analysis and Applications
- Analytical Chemistry and Sensors
- Advanced battery technologies research
- Carbon Nanotubes in Composites
- Advancements in Solid Oxide Fuel Cells
- Silicon Nanostructures and Photoluminescence
- Advanced Battery Materials and Technologies
- Molecular Junctions and Nanostructures
- Mesoporous Materials and Catalysis
- Graphene research and applications
- Gas Sensing Nanomaterials and Sensors
- Aerogels and thermal insulation
- Thermal and Kinetic Analysis
- Polymer Nanocomposite Synthesis and Irradiation
- Supercapacitor Materials and Fabrication
- Complex Systems and Dynamics
- Graphene and Nanomaterials Applications
- Covalent Organic Framework Applications
- Membrane-based Ion Separation Techniques
- Nanotechnology research and applications
- Fullerene Chemistry and Applications
Ioffe Institute
2016-2025
Russian Academy of Sciences
2004-2022
Physico-Technical Institute
2020-2022
Lappeenranta-Lahti University of Technology
2011
Physicotechnical Institute
2009
Abstract Non‐centrosymmetric metal–organic frameworks (MOFs) have recently emerged as a promising class of coordination polymers for nonlinear optics and light conversion. Nevertheless, achieving high endurance efficiency the conversion within whole visible range by single crystal MOF remains challenge. This article reports on design two non‐centrosymmetric MOFs based 1,3,5‐benzenetricarboxylic acid ligand Er/Co ions, providing an efficient simultaneous multiple second third optical harmonic...
The behavior of supported alloyed and de-alloyed platinum-copper catalysts, which contained 14-27% wt. Pt, was studied in the reactions methanol electrooxidation (MOR) oxygen electroreduction (ORR) 0.1 M HClO4 solutions. Alloyed PtCux/C catalysts were prepared by a multistage sequential deposition copper platinum onto Vulcan XC72 dispersed carbon support. De-alloyed PtCux-y/C materials pretreatment acid effects initial composition treatment condition on their composition, structure,...
The review addresses the problem of durability operation low-temperature proton exchange membrane fuel cells. Fuel cells are considerable interest for transition to renewable energy sources; however, devices is still not sufficiently long (10 40 thousand hours). increase in a relevant task. presents systematic account and evaluation methods used stabilization electrochemical conversion systems with defines promising approaches their service life. <br>Bibliography — 197 references.
The stability of Nafion-carbon composites is important for the efficient functioning fuel cells. thermal decomposition Nafion, nanostructured carbon materials, such as multi-walled nanotubes, graphene-like and their composites, have been studied using constant heating rate thermogravimetry in air. Materials were characterized by quantitative qualitative analysis methods, thermogravimetry, X-ray photoelectron spectroscopy, scanning, transmission electron microscopy with field emission. In an...
Compositional proton-conducting membranes based on perfluorinated Aquivion®-type copolymers modified by detonation nanodiamonds (DND) with positively charged surfaces were prepared to improve the performance of hydrogen fuel cells. Small-angle neutron scattering (SANS) experiments demonstrated fine structure in such filled DND (0-5 wt.%), where conducting channels typical for Aquivion® are mostly preserved while particles (4-5 nm size) decorated polymer domains a submicron scale, according...
Ensuring the stable operation of proton exchange membrane fuel cells is conducive to their real-world application. A promising direction for stabilizing electrodes stabilization ionomer via formation surface compounds with graphene. comprehensive study (electrochemical, chemical, and thermal) stability composites cell containing a modifying additive few-layer graphene was carried out. Electrochemical studied by cycling potential on disk electrode 5000 cycles. Chemical assessed resistance...
Behavior of supported alloyed and de-alloyed platinum-copper catalysts, which contained 14% - 27% wt. Pt, was studied in the reactions methanol electrooxidation (MOR) oxygen electroreduction (ORR) 0.1 M HClO4 solutions. Alloyed PtCux/C catalysts were prepared by a multistage sequential deposition copper platinum onto Vulcan XC72 dispersed carbon support. De-alloyed PtCux-y/C materials pretreatment acid The effects initial composition treatment condition on their composition, structure,...
The stability of new membrane-electrode assemblies a proton-exchange membrane fuel cell with highly porous electrodes and low Pt loading, based on the proton-conducting polymer Nafion, was characterized in conditions electrochemical aging. A comprehensive study effect microstructure evolution characteristics obtained by voltammetry, impedance spectroscopy, X-ray powder diffraction, scanning electron microscopy. Because high (>70%) porosity provides intensive mass transfer inside an...
The article presents the results of a study inorganic-polymer nanocomposites Nafion/thermally expanded graphite and Nafion/carbon black by nuclear magnetic resonance thermogravimetry.The structure carbon materials was characterized electron microscopy adsorption structural analysis lowtemperature nitrogen adsorption.The presence interaction Nafion polymer material at interface between components leading to thermal stabilization composites is shown, differences thermally due their morphology...
Abstract A simple, low-cost and environmentally friendly method has been used to obtain highly porous biomorphic carbon monoliths with a good combination of interconnected macro-, mesoand microporosity, electrical conductivity mechanical strength, making these biocarbon materials interesting for electrochemical applications as binder-free electrodes. Highly monolithic biocarbons were obtained from beech wood precursors through pyrolysis subsequent surface modification in steam heated 970°C...