<p>This page displays the records of the person named above and is not linked to a unique person identifier. This record may need to be merged to a profile.</p>
This paper investigates the microstructure and electrochemical properties of Polyaniline-Modified (FeCoNiCrMn)3O4, a high-entropy oxide, with a focus on its potential as an anode material in lithium-ion batteries. The high-entropy oxide (FeCoNiCrMn)3O4, featuring a spinel structure, was synthesized via a two-step process: mechanical milling of constituent oxides followed by a calcination treatment at 900 °C. To investigate the structure of the synthesized powder, scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (EDS), and X-ray diffraction (XRD) were employed. The results demonstrate the successful synthesis of a single-phase spinel structure with a homogeneous distribution of elements, exhibiting perfect uniformity. A Polyaniline (PANI) coating layer was subsequently applied to the HEO particles using a polymerization method. The presence of the PANI layer was confirmed using Fourier Transform Infrared Spectroscopy (FTIR). Results from impedance analysis revealed a substantial decrease in the Z-value of the PANI-modified sample compared to the pure HEO, indicating that the modified anode exhibits enhanced electrical conductivity. It is evident that the PANI coating layer has a significantly positive attribution to the electrochemical performance of the anode material by enhancing its structural stability and inhibiting excessive solid electrolyte interphase (SEI) growth during cycling. The correlations between the HEO structure and the PANI layer with the electrochemical performance of the anode material are discussed.
...
This paper investigates the microstructure and electrochemical properties of Polyaniline-Modified (FeCoNiCrMn)3O4, a high-entropy oxide, with a focus on its potential as an anode material in lithium-ion batteries. The high-entropy oxide (FeCoNiCrMn)3O4, featuring a spinel structure, was synthesized via a two-step process: mechanical milling of constituent oxides followed by a calcination treatment at 900 °C. To investigate the structure of the synthesized powder, scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (EDS), and X-ray diffraction (XRD) were employed. The results demonstrate the successful synthesis of a single-phase spinel structure with a homogeneous distribution of elements, exhibiting perfect uniformity. A Polyaniline (PANI) coating layer was subsequently applied to the HEO particles using a polymerization method. The presence of the PANI layer was confirmed using Fourier Transform Infrared Spectroscopy (FTIR). Results from impedance analysis revealed a substantial decrease in the Z-value of the PANI-modified sample compared to the pure HEO, indicating that the modified anode exhibits enhanced electrical conductivity. It is evident that the PANI coating layer has a significantly positive attribution to the electrochemical performance of the anode material by enhancing its structural stability and inhibiting excessive solid electrolyte interphase (SEI) growth during cycling. The correlations between the HEO structure and the PANI layer with the electrochemical performance of the anode material are discussed.
Journal article(2023)
-
Arkan Alali, Afrouzossadat Hosseini-Abari, Abbas Bahrami, Maryam Yazdan Mehr
Modification of paint with nanoparticles (NPs) provides self-cleaning, water/dirt-repellent, and other properties. Therefore, the aim of the present study was to biosynthesize silver (Ag) and copper oxide (CuO) NPs and to prepare NP-modified paint. To this end, AgNPs and CuONPs were biosynthesized using Bacillus atrophaeus spores and commercial and crude dipicolinic acid (DPA) extracted from the spore of this bacterium. The synthesized NPs were characterized using electron microscopy, Fourier-transform infrared (FTIR), X-ray diffraction analysis (XRD), and energy-dispersive X-ray spectroscopy (EDS) methods. A minimum inhibitory concentration (MIC) assay of NPs against Escherichia coli ATCC8739 and Staphylococcus aureus ATCC6538 was carried out. The antibacterial effects of prepared NP–paint complexes were assessed using an optical density (OD) comparison before and after adding metal sheets coated with NP–paint complexes into the nutrient broth medium. Four different types of NPs were synthesized in this research: AgNPs synthesized by spore (A), AgNPs synthesized by commercial DPA (B), AgNPs synthesized by crude DPA (C), and CuONPs synthesized by spore (D). SEM analysis confirmed the spherical shape of NPs. According to the results, NPs A, B, and D showed higher antibacterial activity against S. aureus compared to E. coli. Furthermore, the analysis of the antibacterial effects of NP–paint complexes suggested that paint–NPs A, B, and C displayed higher activity on E. coli compared to S. aureus. Moreover, the antibacterial effect of paint–NP D was significantly lower than other NPs. According to this robust antibacterial effect on pathogenic bacteria, it seems that these NP–paint complexes could be useful in public places such as hospitals, airports, dormitories, schools, and office buildings, where the rate of transmission of infection is high.
...
Modification of paint with nanoparticles (NPs) provides self-cleaning, water/dirt-repellent, and other properties. Therefore, the aim of the present study was to biosynthesize silver (Ag) and copper oxide (CuO) NPs and to prepare NP-modified paint. To this end, AgNPs and CuONPs were biosynthesized using Bacillus atrophaeus spores and commercial and crude dipicolinic acid (DPA) extracted from the spore of this bacterium. The synthesized NPs were characterized using electron microscopy, Fourier-transform infrared (FTIR), X-ray diffraction analysis (XRD), and energy-dispersive X-ray spectroscopy (EDS) methods. A minimum inhibitory concentration (MIC) assay of NPs against Escherichia coli ATCC8739 and Staphylococcus aureus ATCC6538 was carried out. The antibacterial effects of prepared NP–paint complexes were assessed using an optical density (OD) comparison before and after adding metal sheets coated with NP–paint complexes into the nutrient broth medium. Four different types of NPs were synthesized in this research: AgNPs synthesized by spore (A), AgNPs synthesized by commercial DPA (B), AgNPs synthesized by crude DPA (C), and CuONPs synthesized by spore (D). SEM analysis confirmed the spherical shape of NPs. According to the results, NPs A, B, and D showed higher antibacterial activity against S. aureus compared to E. coli. Furthermore, the analysis of the antibacterial effects of NP–paint complexes suggested that paint–NPs A, B, and C displayed higher activity on E. coli compared to S. aureus. Moreover, the antibacterial effect of paint–NP D was significantly lower than other NPs. According to this robust antibacterial effect on pathogenic bacteria, it seems that these NP–paint complexes could be useful in public places such as hospitals, airports, dormitories, schools, and office buildings, where the rate of transmission of infection is high.
