Article
Materials Science, Multidisciplinary
Marin Tadic, Lazar Kopanja, Matjaz Panjan, Jelena Lazovic, Biljana Vucetic Tadic, Boban Stanojevic, Laurence Motte
Summary: Hematite nanorhombohedrons and nanoplates were prepared through a hydrothermal synthesis process, with the nanoplates showing higher coercivity and transverse relaxivity rate compared to the nanorhombohedrons, indicating a shape-dependent magnetic behavior.
MATERIALS RESEARCH BULLETIN
(2021)
Article
Engineering, Chemical
Marin Tadic, Matjaz Panjan, Yoann Lalatone, Irena Milosevic, Biljana Vucetic Tadic, Jelena Lazovic
Summary: This study investigates the synthesis, phase evolution, crystal structure, magnetic properties, and potential biomedical applications of QUAIPH and hematite nanostructures synthesized by annealing beta-FeOOH nanorods. The results show the relationship between annealing temperature, crystal structure, morphology, and magnetic properties of the synthesized materials, as well as their low cytotoxicity and high MRI relaxivity.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Josiane C. Souza, Renan A. P. Ribeiro, Leticia G. da Trindade, Regiane C. de Oliveira, Leonardo D. Costa, Marisa C. de Oliveira, Sergio R. de Lazaro, Julio R. Sambrano, Cleber R. Mendonca, Leonardo de Boni, Fenelon M. L. Pontes, Adilson J. A. de Oliveira, Edson R. Leite, Elson Longo
Summary: This study demonstrates that femtosecond laser-irradiated Fe2O3 materials containing a mixture of alpha-Fe2O3 and epsilon-Fe2O3 phases exhibit significant improvements in their photoelectrochemical, magnetic, and optical properties. The irradiated samples show increased defect density and distorted crystalline lattice compared to nonirradiated samples, leading to higher conductivity and stronger ferromagnetic behavior. Quantum mechanical calculations based on density functional theory are consistent with experimental results, elucidating changes at the molecular level and enabling the construction of diagrams illustrating nanoparticle morphologies.
Article
Multidisciplinary Sciences
D. Havenga, R. Akoba, L. Menzi, S. Azizi, J. Sackey, N. Swanepoel, A. Gibaud, M. Maaza
Summary: This study reports on the physical properties of Namibian red ochre and its use as a skin protective and beauty cream by the Himba Community. The red ochre consists mainly of nano-scaled alpha-Fe2O3 nanocrystals and gamma-FeOOH hydrolized oxide component. It exhibits exceptional UV filtration, significant IR reflectivity, and antibacterial response against E. Coli & S. Aurus.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Multidisciplinary
Xiaohui Yan, Gang Li, Kai Shen, Congwei Wang, Kaiying Wang
Summary: Nanostructured hematite shows promise as a semiconductor for PEC water oxidation but suffers from inadequate charge separation and sluggish kinetics. In this study, a nanotubular Fe2O3/Fe3O4 p-n heterojunction with dual IEFs is prepared, which promotes charge carrier separation/migration and enhances PEC performance. The addition of In2O3 clusters forms a second IEF and further improves the hole-collection efficiency. The composite photoanode achieves a state-of-the-art current density and a superior photon-to-current efficiency, making it a potential candidate for efficient PEC catalysts.
Article
Materials Science, Ceramics
Yongan Niu, Jianming Feng, Zihang Shi, Xinyu Lu, Li Yang, Xin Zhang
Summary: In this study, graphene oxide (GO) was chosen to improve the structural stability of alpha-Fe2O3 films. The double-layered GO/alpha-Fe2O3/GO sandwich films showed good stacking structures and significant interlayer coupling, resulting in enhanced electrochemical performance and corrosion resistance.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Soo Hyun Park, Taelin Kim, Abhijit N. Kadam, Chinna Bathula, Ayman A. Ghfar, Hansang Kim, Sang-Wha Lee
Summary: The rational design of a Z-scheme heterojunction is of great significance for efficient charge separation and solar-light harvesting. In this study, C-Fe2O3@rGO@g-C3N4 was synthesized via hydrothermal and solvothermal reactions, and it exhibited significantly enhanced photocatalytic efficiency in the presence of a hole scavenger.
SURFACES AND INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Gul Rahman, Abdur Rahim, Noureen Amir Khan, Anwar ul Haq Ali Shah, Burhan Khan, Sang Youn Chae
Summary: In this study, the effect of tin oxide incorporation on the photoelectrochemical (PEC) water oxidation activity of alpha-Fe2O3-SnO2 nanocomposites prepared by hydrothermal method was investigated. The results showed that the addition of SnO2 significantly altered the surface morphology and size features of alpha-Fe2O3, and formed heterogeneous grain boundary interfaces. Among the different compositions, alpha-Fe2O3-SnO2 (50 wt%) exhibited promising water splitting photocurrent density under standard illumination conditions. This enhancement in photocurrent density can be attributed to the improved charge separation at the local heterojunction between alpha-Fe2O3 and SnO2.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Physics, Multidisciplinary
H. Husain, N. Nurhayati, A. Susanto, E. H. Sujiono, Y. Taryana, K. Krisdayanti
Summary: This study successfully synthesized hematite (α-Fe2O3) and maghemite (γ-Fe2O3) nanopowders from natural ironstone using the coprecipitation method. The synthesis process was varied to obtain different phases by adjusting the acidic environments. The crystal and microstructure were investigated using XRD and SEM, while the microwave absorption properties were examined using a VNA. The results showed that the acidic environments influenced the structure and microwave absorption, with enhanced absorption properties observed after the precipitation process.
Article
Chemistry, Applied
Ignacio Cuauhtemoc-Lopez, Adriana Jimenez-Vazquez, Luis Alberto Estudillo-Wong, Gilberto Torres-Torres, Hermicenda Perez-Vidal, Miroslava Barrera-Salgado, Rosendo Lopez-Gonzalez, Durvel De la Cruz-Romero
Summary: Two magnetic catalysts, Fe2O3-TiO2 support and Rh/Fe2O3-TiO2 catalyst, were synthesized and characterized for naphthalene hydrogenation. The Rh/Fe2O3-TiO2 catalyst showed high selectivity and conversion rate in the reaction, maintained even after multiple cycles.
Article
Chemistry, Multidisciplinary
Parveen Garg, Lokanath Mohapatra, Ajay Kumar Poonia, Ajay Kumar Kushwaha, Kumaran Nair Valsala Devi Adarsh, Uday Deshpande
Summary: This study reports the photoelectrochemical performance of densely grown single crystalline hematite nanosheet photoanodes for water splitting. The nanosheets were grown on pure iron through controlled thermal oxidation, providing a low-cost synthesis route. The nanosheet sample showed a significantly higher photocurrent density and prolonged carrier lifetime compared to a thin film on a different substrate. The findings suggest that the nanosheets synthesized by the simple method exhibit superior photoelectrochemical performance.
Article
Physics, Applied
Saveria Santangelo, Muhammad Hamid Raza, Nicola Pinna, Salvatore Patane
Summary: Crystalline hematite/polycrystalline nickel oxide core/shell nanofibers were prepared with varying cycles of atomic layer deposition of NiO, leading to the detection of a peak possibly arising from a two-magnon mode, assisted by the surface plasmon introduced by the polycrystalline NiO layer.
APPLIED PHYSICS LETTERS
(2021)
Article
Materials Science, Multidisciplinary
B. Arunkumar, M. Jothibas, S. Johnson Jeyakumar, S. James Jeyaseelan
Summary: The demand for nanosized magnetic materials with improved optical properties has significantly increased in recent years. Pure and Zn-doped α-Fe2O3 nanoparticles at different weight percentages were synthesized using a hydrothermal method. Characterization through various spectrographic tools revealed the crystalline nature, functional groups, optical and magnetic behaviors, and morphology of the synthesized samples. The results suggested that this method of fabricating pure and Zn-doped α-Fe2O3 can be useful in the development of better magnetic storage devices and resonance imaging sectors.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Engineering, Electrical & Electronic
Vijay Kumar, Dharamvir Singh Ahlawat, Amrik Singh, RadheShyam
Summary: Lanthanum (La)-substituted alpha-Fe2O3 nanopowder with altering concentration was prepared using the sol-gel technique. The effect of trivalent La3+ ions on the microstructural, electrical, dielectric, and magnetic properties of the hematite nanopowder was investigated. The results showed that the addition of La3+ ions significantly modified the crystal structure, electrical conduction mechanism, and magnetic properties of the samples.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Environmental Sciences
Mohamed Sharmila, Ramasamy Jothi Mani, Chelliah Parvathiraja, Sheik Mohammed Abdul Kader, Masoom Raza Siddiqui, Saikh Mohammad Wabaidur, Md Ataul Islam, Wen-Cheng Lai
Summary: In this study, alpha-Fe2O3 nanoparticles with strong ferromagnetic behavior and exceptional functionalities were synthesized using a simple auto-combustion method. The nanoparticles were characterized using various analytical techniques, and the results confirmed their excellent charge carrier and radical production capabilities, as well as outstanding photocatalytic, antifungal, and antibacterial activities.
Article
Materials Science, Multidisciplinary
Peter Rodic, Barbara Kapun, Matjaz Panjan, Ingrid Milosev
Article
Materials Science, Multidisciplinary
Marin Tadic, Irena Milosevic, Slavko Kralj, Darko Hanzel, Tanja Barudzija, Laurence Motte, Darko Makovec
Article
Materials Science, Multidisciplinary
Marin Tadic, Lazar Kopanja, Matjaz Panjan, Jelena Lazovic, Biljana Vucetic Tadic, Boban Stanojevic, Laurence Motte
Summary: Hematite nanorhombohedrons and nanoplates were prepared through a hydrothermal synthesis process, with the nanoplates showing higher coercivity and transverse relaxivity rate compared to the nanorhombohedrons, indicating a shape-dependent magnetic behavior.
MATERIALS RESEARCH BULLETIN
(2021)
Article
Computer Science, Hardware & Architecture
Goran Kekovic, Lazar Kopanja, Negovan Stamenkovic
Summary: An extended Neyman-Pearson detector based on a combination of matched and wavelet filters is proposed in this paper and compared with a constant false alarm radar detector. The study finds that the extended and classic Neyman-Pearson detectors outperform the constant false alarm radar detector in a specific temperature range.
JOURNAL OF CIRCUITS SYSTEMS AND COMPUTERS
(2022)
Article
Materials Science, Ceramics
Marin Tadic, Matjaz Panjan, Biljana Vucetic Tadic, Slavko Kralj, Jelena Lazovic
Summary: A porous hematite/alumina nanocomposite with unique nanostructure and magnetic properties is synthesized through sol-gel combustion synthesis. The material shows potential for biomedical applications due to its low cytotoxicity and porous nanostructure.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Peter Panjan, Aljaz Drnovsek, Nastja Mahne, Miha Cekada, Matjaz Panjan
Summary: This study investigates and compares the surface topography of hard coatings deposited by three different physical vapor deposition methods, summarizing the expertise gained during the development of PVD hard coatings for tool and machine component protection. Variations in surface topography between deposition techniques, the impact of ion etching on surface cleaning, and the causes of surface roughness in PVD coatings are discussed.
Article
Materials Science, Multidisciplinary
Peter Panjan, Aljaz Drnovsek, Pal Terek, Aleksandar Miletic, Miha Cekada, Matjaz Panjan
Summary: This paper presents a comparative study of the tribological properties of TiN coatings prepared by different methods. The influence of coating properties, friction conditions, surface topography, and surrounding atmosphere on the tribological behavior was analyzed. The study focused on the initial phase of sliding tests and found significant differences in the tribological response of the coatings. The presence of nodular defects and metal droplets on the coating surface were found to affect the tribological behavior. The wear rates were found to increase with surface roughness, with coatings prepared by cathodic arc deposition showing the highest wear rates. The influence of post-polishing and the surrounding atmosphere, such as ambient air, oxygen, and nitrogen, was also investigated. The wear rate was found to be lower in ambient air compared to oxygen atmosphere, possibly due to the influence of humidity. The wear rates measured in a nitrogen atmosphere were much lower than those measured in an oxygen or ambient air atmosphere.
Article
Engineering, Electrical & Electronic
Djordje Trpkov, Milica Vinic, Radovan Dojcilovic, Dragana Tosic
Summary: Nitrogen-functionalized graphene quantum dots were synthesized via hydrothermal transformation of glycine precursors in glycerol. The N-GQDs exhibited strong fluorescence in the blue region and are suitable for bioimaging applications.
OPTICAL AND QUANTUM ELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
Peter Panjan, Aljaz Drnovsek, Miha Cekada, Matjaz Panjan
Summary: In-situ cleaning of substrate surface using ion etching is crucial for physical vapor deposition (PVD) processes. However, in industrial deposition systems, the ion etching process may lead to re-contamination. To address this issue, a double-layer TiAlN hard coating was prepared on the same substrate in two separate production batches, allowing easy identification and analysis of the contamination layer formed during the ion etching before the second deposition. The contamination of the batching material was also observed on seed particles, causing the formation of nodular defects. Changes in coating topography were analyzed by comparing the same coating surface area after the first and second TiAlN layers were deposited. Additionally, it was found that the surface roughness slightly decreased after the deposition of the second TiAlN coating, which can be explained by the planarization effect.
Review
Computer Science, Interdisciplinary Applications
Vladimir Mikic, Milos Ilic, Lazar Kopanja, Boban Vesin
Summary: Over the years, personalisation in e-learning has evolved as a promising paradigm. However, there are still voids and limitations in the comprehensive literature survey regarding how personalisation might occur in e-learning environments and benefit the teaching and learning process. This literature review aims to examine the subject, provide insights into the use of personalised techniques and systems in e-learning, and investigate its impact on the engagement and success of the students.
COMPUTER APPLICATIONS IN ENGINEERING EDUCATION
(2022)
Article
Materials Science, Multidisciplinary
Nastja Mahne, Miha Cekada, Matjaz Panjan
Summary: This study analyzed the total sputtering yield and angular distribution of sputtered atoms for a range of single-element target materials using SRIM simulations. The results showed that the total sputtering yield of transition metals increases with the group of the periodic table, while the angular distribution of sputtered atoms exhibits a cosine distribution. The asymmetric distribution of sputtered atoms is more prominent at lower ion energies and becomes more symmetric at higher ion energies. Additionally, the symmetry of the distribution depends on the group of the periodic table and the atomic mass of the target material.
Article
Materials Science, Multidisciplinary
Peter Panjan, Peter Gselman, Matjaz Panjan, Tonica Boncina, Aljaz Drnovsek, Mihaela Albu, Miha Cekada, Franc Zupanic
Summary: The microstructure and surface topography of the TiAlN/CrN nanolayer coating were systematically analyzed in this study. The effects of substrate rotation modes, substrate material, and ion etching methods on the coating were investigated, with special attention given to the influence of non-metallic inclusions. The results indicate that substrate rotation modes significantly influence the microstructure, surface topography, and periodicity of the coating layer.
Review
Computer Science, Artificial Intelligence
Milos Ilic, Vladimir Mikic, Lazar Kopanja, Boban Vesin
Summary: Online learning has become increasingly important in recent events. This research aims to provide comprehensive research on innovations in e-learning and explore the potential benefits of intelligent techniques. By summarizing the latest technologies, the authors highlight important implications and existing limitations in practice.
ARTIFICIAL INTELLIGENCE REVIEW
(2023)
Article
Chemistry, Physical
J. Zamora, T. Bautista, N. S. Portillo-Velez, A. Reyes-Montero, H. Pfeiffer, F. Sanchez-Ochoa, H. A. Lara-Garcia
Summary: Experimental and DFT studies were conducted on the structural, magnetic, and optical properties of RFeO3 perovskites. The perovskites exhibited an orthorhombic crystal structure and weak ferromagnetic behavior. They were confirmed to be semiconductors with a bandgap of approximately 2.1 eV.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xianxiang Lv, Jing Jin, Weiguang Yang
Summary: By depositing TiN and TiO2 surface layers on AlSi films, the electrochemical performance of silicon-based anodes can be significantly improved, suppressing volume expansion and promoting the formation of a stable SEI layer.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Sharafat Ali, Haider Ali, Syedul Hasnain Bakhtiar, Sajjad Ali, Muhammad Zahid, Ahmed Ismail, Pir Muhammad Ismail, Amir Zada, Imran Khan, Huahai Shen, Rizwan Ullah, Habib Khan, Mohamed Bououdina, Xiaoqiang Wu, Fazal Raziq, Liang Qiao
Summary: The construction and optimization of redox-heterojunctions using a bifunctional phosphate as an electron-bridge demonstrated significant improvements in photo catalytic activity, including enhanced dispersion, reduced interfacial migration resistance, and increased abundance of active-sites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ren-Ni Luan, Na Xu, Chao-Ran Li, Zhi-Jie Zhang, Yu-Sheng Zhang, Jun Nan, Shu-Tao Wang, Yong-Ming Chai, Bin Dong
Summary: Extensive research has revealed that oxygen evolution reaction (OER) in alkaline conditions involves dynamic surface restructuring. The development and design of sulfide/oxide pre-catalysts can reasonably adjust the composition and structure after surface reconstruction, which is crucial for OER. This study utilized a simple two-step hydrothermal method to achieve in situ S leaching and doping, inducing the composition change and structure reconstruction of CoFe oxides. The transformed FeOOH and CoOOH exhibited excellent OER activity and could be easily mass-produced using low-cost iron based materials and simple methods.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jun'an Lai, Daofu Wu, Peng He, Kang An, Yijia Wang, Peng Feng, WeiWei Chen, Zixian Wang, Linfeng Guo, Xiaosheng Tang
Summary: Zero-dimensional organic-inorganic metal halides (OMHs) are gaining attention in the fabrication of light-emitting diodes due to their broad emission band and high photoluminescence quantum yield. This work synthesized a zero-dimensional organic tetraphenylphosphonium bismuth chloride (TBC) that showed efficient blue light emission, with the emission mechanism attributed to the transition of Bi3+ ions. White light-emitting diodes (WLEDs) were fabricated using TBC, along with green-emitting and red-emitting single crystals, achieving single-component white emissions. These findings demonstrate the different emission mechanism of ns2 ions-based OMHs and highlight the potential of bismuth-based OMHs in WLEDs applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xuewei Liang, Yunhai Su, Taisen Yang, Zhiyong Dai, Yingdi Wang, Xingping Yong
Summary: The revolutionary design concept of high-entropy alloys has brought new opportunities and challenges to the development of advanced metal materials. In this work, AlCrCuFe2NiTix high-entropy flux cored wires were prepared by combining the design idea of a high-entropy alloy with the characteristics of flux cored wire. AlCr-CuFe2NiTix high-entropy surfacing alloys were prepared using gas metal arc welding technology. The wear properties of the alloys were analyzed, and the phase composition, microstructure, strengthening mechanism, and wear mechanism were discussed. The results show that the alloys exhibit a dendritic microstructure with BCC/B2 + FCC phases. Increasing Ti content leads to the precipitation of Laves phase. The alloys show improved microhardness and wear resistance due to the precipitation of coherent B2 and Laves phases. However, excessive Ti addition results in the increase of Laves phase and reduced wear resistance of the alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
M. Vadivel, M. Senthil Pandian, P. Ramasamy, Qiang Jing, Bo Liu
Summary: This work presents the enhanced photocatalytic and electrochemical performance of g-C3N4 assisted PAA on CoFe2O4 ternary nanocomposites. The incorporation of PAA and g-C3N4 improves the separation efficiency of photogenerated charge carriers, resulting in superior photocatalytic degradation and high specific capacitance values.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Vibhu T. Sivanandan, Ramany Revathy, Arun S. Prasad
Summary: In this study, pure and doped cobalt ferrite nanoparticles were prepared using the sol-gel auto-combustion method with the aid of lemon juice as eco-fuel. The crystal structure, lattice parameter, crystallite size, microstrain, optical parameters, and room temperature magnetic properties of the samples were analyzed. The effect of doping on the magnetic properties was also investigated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qing Guo, Bowen Zhang, Benzhe Sun, Yang Qi
Summary: This study prepared ZnO films with various nonpolar preferred orientations using conventional chemical bath deposition method and characterized their growth process and mechanism. It was found that the type and concentration of nitrate could control the preferred orientation and surface roughness of ZnO films. Additionally, ZnO films with different preferred orientations exhibited different optical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Chong Zhang, Yan Liu, Zhaoyan Wang, Hang Yang
Summary: In this study, six bimetallic FeCo particles were synthesized via the hydrothermal method at different Fe:Co ratios. The Fe:Co ratio not only modulates the composition of the particles but also influences their structure and magnetic properties. The FeCo alloys showed a transformation from an Fe-based structure to a Co-based structure with increasing Co content. The Fe:Co ratio of 1:1 and 3:1 resulted in particles with the highest and lowest saturation magnetization, respectively.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jianning Zhang, Jing Li, Yiren Wang, Xiaodong Mao, Yong Jiang
Summary: We conducted a study on the formation of ultra-fine Y-Ti-Ta-O nano-oxides in Ta+B micro-alloyed 13CrWTi-ODS alloys using electron microscopy and first-principles calculations. The Y-Ti-Ta-O nano-oxides were found to be mainly Y2(Ti,Ta)2O7, with an average size of 7 nm and a number density of 6.8 x 1023 m-3. Excess boron was found to enhance the adhesion of some low-sigma grain boundaries but weaken the Fe/Y2Ti2O7 interface, while excess tantalum enhanced the Fe/Y2Ti2O7 interface but caused serious degradation of grain boundaries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Yirong Fang, Pei Cheng, Hang Yuan, Hao Zhao, Lishu Zhang
Summary: A new composite system of nitrogen-doped reduced graphene oxide and black phosphorus quantum dots has been developed for tumor therapy, showing improved electrochemical properties and stability. The system generates hydrogen peroxide and hydroxyl radical to effectively kill tumor cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xiufang Qin, Yuanli Ma, Hui Zhang, Ting Zhang, Fang Wang, Xiaohong Xu
Summary: The structure and magnetism of cobalt ferrites after Mn2+-Tb3+ co-doping were studied. Co-doped samples exhibited cubic spinel structure and spherical shape of ferrite nanoparticles. The redistribution of Co2+ and Fe3+ ions between octahedral and tetrahedral sites was observed due to Mn2+-Tb3+ co-doping. The coercivity and magnetization saturation of co-doped samples were significantly improved, leading to a maximum energy product that is 190% higher than that of the un-doped sample.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ho Yeon Lee, Wonjong Yu, Yoon Ho Lee
Summary: Recently, there has been an increasing interest in developing ultra-fine nanostructured electrodes with extensive reaction areas to enhance the performance and low-temperature operation of solid oxide fuel cells. The use of a refined approach involving co-sputtering metal alloys and oxide targets has demonstrated the feasibility of nano-columnar structures in perovskite-based electrodes, expanding the temperature range of thin film electrodes. This study systematically examines the effects of chamber pressure control in the co-sputtering process and identifies the intricate relationship between sputtering pressure and film structure. By fine-tuning the columnar growth in the electrode, significant improvements in performance and thermo-mechanical properties were achieved, resulting in high-performance all-sputtered solid oxide fuel cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qianyun Bai, Xiaoxiao Yan, Da Liu, Kang Xiang, Xin Tu, Yanhui Guo, Renbing Wu
Summary: This study proposes a simple method to develop a non-precious transition metal-based electrocatalyst with high catalytic activity and robustness for the hydrogen evolution reaction. The as-synthesized electrode exhibits a low overpotential and high current density, indicating its potential in energy conversion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)