A5012032562- Electrocatalysts for Energy Conversion
- Fuel Cells and Related Materials
- Electrochemical Analysis and Applications
- Advanced battery technologies research
- Machine Learning in Materials Science
- Advanced Memory and Neural Computing
- Catalysis and Hydrodesulfurization Studies
- Advancements in Solid Oxide Fuel Cells
- Catalytic Processes in Materials Science
- CO2 Reduction Techniques and Catalysts
Southern Federal University
2019-2024
PtM/C (M = Co, Ni, Cu, Ru) catalysts were prepared by wet-synthesis methods. The composition and structure of the synthesized materials estimated TXRF, XRD, TEM, HAADF-STEM, EDX, TGA/DSC According to CV LSV methods, PtCu/C material is characterized highest activity in ORR compared other studied. PtRu/C also exhibit MOR. Studying durability obtained bimetallic using accelerated stress testing has allowed for detection most promising materials, whose characteristics would be superior those...
New highly active electrocatalysts were obtained by depositing bimetallic Pt-Cu nanoparticles on the surface of an N-doped carbon support. The structural–morphological characteristics and electrochemical behavior catalysts studied. Using current stress testing protocols, their resistance to degradation was assessed in comparison with that a commercial Pt/C material. A combined approach catalyst synthesis consists alloying platinum copper doping support makes it possible obtain uniform...
A carbon supported PtCux/C catalyst, which demonstrates high activity in the oxygen electroreduction and methanol electrooxidation reactions acidic media, has been obtained using a method of chemical reduction Pt (IV) Cu (2+) liquid phase. It found that potential range preliminary voltammetric activation catalyst significant effect on de-alloyed material reaction (ORR). High-resolution transmission electron microscopy (HRTEM) there are differences structures as-prepared materials activated...
This review considers the features of catalysts with different nanoparticle structures architecture transformation under various pre-treatment types. Based on results publications analysis, it can be concluded that chemical or electrochemical activation bimetallic has a significant effect their composition, microstructure, and catalytic activity in oxygen reduction reaction. The stage is recommended for use as mandatory catalyst to obtain highly active de-alloyed materials. literature...
The present work aimed to investigate the influence of “weakly bound“ copper dissolution from surface bimetallic PtCux/C catalysts on properties proton exchange membrane and electrode assembly (MEA) in general. A number materials have been obtained by simultaneous reduction platinum precursors course liquid-phase synthesis with a varying ratio metals PtCu2.0/C PtCu0.3/C. All electrocatalysts after activation stage exhibit high activity oxygen electroreduction reaction. “as prepared” state...
The durability of low temperature proton exchange membrane fuel cell (PEMFC) catalysts crucially affects their lifetime. choice carbon support is important in terms increasing the stability catalysts. In this research, Pt/C samples were obtained using polyol synthesis method on two types supports: standard support, Vulcan XC-72, and with a high degree graphitization, ECS-002402. One for assessing structural characteristics through transmission electron microscopy (TEM), according to which...
The present study, concerned with high-performance ORR catalysts, may be a valuable resource for wide range of researchers within the fields nanomaterials, electrocatalysis, and hydrogen energy. objects research are electrocatalysts based on platinum–copper nanoparticles onion-like solid-solution structures. To evaluate functional characteristics XRD, XRF, TEM, HAADF-STEM, EDX methods, as well voltammetry method rotating disk electrode have been used. This work draws attention to...