Article
Materials Science, Multidisciplinary
Haowen Jiang, Lijun Peng, Xujun Mi, Hong Guo, Haofeng Xie, Dongmei Liu, Feng Liu, Zhen Yang
Summary: In this study, the strength and electrical conductivity of Cu-9Ni-6Sn alloy were improved by severe plastic deformation after aging at different temperatures. The main strengthening mechanisms were dislocation and fiber strengthening. The treated alloy exhibited similar properties to Cu-Be alloys, providing a new approach for the preparation of copper alloys with excellent comprehensive performance.
MATERIALS & DESIGN
(2023)
Article
Materials Science, Multidisciplinary
Katya Ignatova, Iliyan Popov
Summary: Different shapes and compositions of Sn-Ni alloy powders were deposited by adjusting the Ni2+/Sn2+ ratio in the electrolyte and pulse frequency. Powders deposited in potentiostatic modes have more homogeneous structure and higher nickel content, showing excellent electrocatalytic activity for oxygen reduction reaction.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Crystallography
Xiaohong Yang, Feng Lv, Xiaohong Wang, Zhengzhong Zhang, Dongdong Zhu, Yuan Chen, Jianya Ge, Jinhua Tang
Summary: The microstructure, phase composition, and mechanical properties of ternary Al-5.4Ni-2Sn alloy solidified under different high pressures were investigated. The results show that the alloy consists of Al, Al3Ni, and beta-Sn phases. The hardness of the alpha-Al phase increases with increasing pressure, while the hardness of the beta-Sn phase decreases. Additionally, the compressive strength significantly increases under high pressure.
Article
Materials Science, Multidisciplinary
Subhadeep Datta, Shampa Guha, Shantanu Kumar Panda, Manoranjan Kar
Summary: The Ni2.24Mn0.76Sn Heusler alloy, prepared using conventional arc melting method, exhibits low-cost, hysteresis-free, broad working temperature magnetocaloric properties. The critical exponents and range of exchange interaction fall between long-range mean-field theory and short-range 3D Heisenberg model, indicating the complex nature of exchange interaction in the system. This alloy shows reasonable magnetocaloric effect and a large working temperature near room temperature.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Chemistry, Physical
Jelena D. Gojgic, Aleksandar M. Petricevic, Thomas Rauscher, Christian I. Bernaecker, Thomas Weissgaerber, Luka Pavko, Rastko Vasilic, Mila N. Krstajic Pajic, Vladimir D. Jovic
Summary: The hydrogen evolution reaction (HER) was studied in Ni foams with different pore sizes and in Ni-Sn/Ni foam electrodes. Ni-Sn alloys were electrodeposited from a pyrophosphate-glycine bath using the controlled potential coulometry (CPC) technique. Cross-section analysis revealed that rough Ni-Sn alloy covered the complete inner and outer surface of the foam. Compared to bare Ni foams, Ni-Sn samples showed a lower overpotential at j =-200 mA cm-2 and a change in Tafel slopes from -120 mV dec-1 to -50 mV dec-1. The lowest overpotential achieved at -100 mA cm-2 was as low as -77 mV. These cathodes could be promising 3D materials for industrial water electrolysis.
APPLIED CATALYSIS A-GENERAL
(2023)
Article
Chemistry, Physical
Xinkuai He, Zhousi Hu, Ruqing Guo, Yiren Li, Luye Wu
Summary: One of the critical challenges in hydrogen production by water electrolysis is the development of low-cost, highly active, and stable electrode materials. In this study, Co-Ni-Mo alloy electrocatalysts with a honeycomb structure were prepared using the galvanostatic deposition technique from the ethylene glycol system, showing high intrinsic electrocatalytic activity for hydrogen evolution reaction (HER). The electrochemical behavior of Co2+, Ni2+, and Mo6+ reductions, as well as the co-deposition behavior of Co-Ni, Co-Mo, Ni-Mo, and Co-Ni-Mo alloys, were investigated. The Co58Ni23Mo19 deposits obtained under optimal conditions exhibited excellent electrocatalytic durability and activity for HER in 1.0 M KOH, with an eta 10 of 51 mV. The formation model of the honeycomb structured Co-Ni-Mo alloy deposits was proposed. This work provides a simple and economical method for the preparation of a 3-dimensional catalytic electrode.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Shuochao You, Yihui Wu, Yuxin Wang, Zhen He, Li Yin, Yuan Zhang, Zesheng Sun, Zejie Zhang
Summary: Self-supported Ni-Fe-Sn electrocatalysts were fabricated on nickel foam through a simple and facile process. The prepared electrocatalysts exhibited excellent bifunctional properties in alkaline medium and showed ultralow overpotentials for hydrogen evolution reaction and oxygen evolution reaction. The Ni-Fe-Sn electrocatalyst demonstrated outstanding electrocatalytic performance for water splitting with low applied voltage and long-term stability.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Electrochemistry
T. N. Vorobyova, A. A. Kudaka
Summary: A new ethylene glycol electrolyte has been developed for nickel-tin coatings electrodeposition, ensuring high nickel content coatings with stability and efficiency.
TRANSACTIONS OF THE INSTITUTE OF METAL FINISHING
(2022)
Article
Materials Science, Multidisciplinary
Ramesh Sooryanarayana Bhat, Manjunatha Krishna Balakrishna, Poornesh Parthasarathy, Ampar Chitharanjan Hegde
Summary: Single-layer and multilayer alloy deposits were electroplated onto a mild steel substrate, consisting of Zn and Fe alloys with different compositions. The corrosion resistance of these deposits was evaluated using potentiodynamic polarization method, while their surface morphology, crystal structure, and Fe content were characterized using scanning electron microscopy, X-ray diffraction, colorimetry, and energy-dispersive X-ray spectroscopy, respectively. The microhardness of the coatings was measured using a Vickers indenter. It was found that the Zn-Fe multilayer coatings showed significantly improved corrosion resistance compared to the single-layer coating, making them crucial for the automotive industry and steel-based vehicle parts.
Article
Thermodynamics
Weimin Zhao, Yanan Yang, Enkuan Zhang, Biao Zhang, Mingwen Wen, Ying Tang, Lijun Zhang
Summary: In this study, the phase equilibria of the Cu-Ni-Sn ternary system were critically reviewed and improved by updating the thermodynamic parameters of the sub-binary Ni-Sn system. The new thermodynamic descriptions were validated through comprehensive comparison with experimental data, demonstrating the effectiveness of the approach.
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY
(2021)
Article
Materials Science, Coatings & Films
Jian Zhang, Hongxing Lu, Peng He, Zijie Ren, Guofang Shen, Ruxia Liu, Lei Wang, Guoqiang Luo
Summary: This study presents a facile electrodeposition and annealing procedure for the fabrication of Ni-Mo-Cu catalysts for hydrogen evolution reaction. Cu addition augmented the surface area and conductivity, while the synergistic effect of the three elements enhanced the intrinsic catalytic activity. The annealed Ni-Mo-Cu catalyst exhibited improved corrosion resistance and reduced overpotential compared to the directly deposited Ni-Mo catalyst.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Chemistry, Physical
Yihui Wu, Yuan Zhang, Yuxin Wang, Zhen He, Zhengjian Gu, Shuochao You
Summary: A highly efficient Ni-Fe-Sn electrocatalyst supported on nickel foam was successfully fabricated, showing low overpotential and superior stability for hydrogen evolution reaction in alkaline condition. The remarkable electrocatalytic activity was attributed to the synergistic effects between Ni, Fe, and Sn during the hydrogen evolution reaction process.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Coatings & Films
Zhaoyang Zhang, Yucheng Wu, Kun Xu, Xueren Dai, Douyan Zhao, Hao Zhu, Yang Liu
Summary: This paper discusses the impact of a magnetic field on amorphous Ni-Fe-P coating, showing that the magnetic field can reduce the number of micro-cracks and improve the internal stress state. Additionally, the amorphous structure remains unchanged when a magnetic field is added, and compared with LECD, MLECD enhances corrosion resistance but decreases wear resistance.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Coatings & Films
Umesh Somaji Waware, Roshan Nazir, Abhay Prasad, A. M. S. Hamouda, Ajaya Kumar Pradhan, Meshal Alshehri, Rabbani Syed, Abdul Malik, Mohammed S. Alqahtan
Summary: The study developed a Ni-B-V2O5 composite coating on mild steel substrate using electrodeposition and investigated its mechanical and anti-corrosive properties. The addition of V2O5 particles increased surface roughness and enhanced micro-hardness and elastic modulus of the composite coating. Furthermore, the corrosion resistance of the Ni-B-V2O5 composite coating was significantly improved compared to the bare Ni-B matrix.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Chemistry, Physical
Yuling Xu, Yanyan Liu, Xinyi Zhang, Kai Liu, Renjun Wang, Yuewei Yang, Zheng Fang, Junfeng Chen
Summary: With increasing global energy demand, electrolytic water has become the main method for efficient and clean hydrogen production. Transition metal catalysts, such as Fe-Co-Ni, Co-Fe, Ni-Fe, and Co-Ni alloy electrodes, show promising performance in hydrogen evolution due to their low cost, stability, and high catalytic activity. Among these alloys, the Co-Fe alloy electrode exhibits the best hydrogen evolution performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Electrochemistry
Nebojsa D. Nikolic, Predrag M. Zivkovic, Nevenka Elezovic, Uros Lacnjevac
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2020)
Article
Electrochemistry
N. R. Elezovic, P. Zabinski, U. C. Lacnjevac, M. N. Krstajic Pajic, V. D. Jovic
Summary: Two types of iridium oxide films were investigated on a Ti-2 AlC substrate, showing that the anodically electrodeposited iridium oxide film is more active for the OER compared to the film prepared by cycling electrodeposited iridium layer, although both films exhibited insufficient stability.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2021)
Article
Chemistry, Physical
Daniel M. Mijailovic, Vuk V. Radmilovic, Uros C. Lacnjevac, Dusica B. Stojanovic, Vladimir D. Jovic, Velimir R. Radmilovic, Petar S. Uskokovic
APPLIED SURFACE SCIENCE
(2020)
Article
Chemistry, Analytical
Maja D. Obradovic, Bojana D. Balanc, Uros C. Lacnjevac, Snezana Lj. Gojkovic
Summary: Hydrated iridiumoxyhydroxide (IrOx) films were electrochemically deposited using constant anodic potentials and potential cycling protocols, revealing the presence of Ir(III)/Ir(IV) mixtures and enhanced uniformity and activity in films deposited by potential cycling. The analysis showed that the films deposited by potential cycling had a higher OER activity and better stability compared to films deposited at a constant anodic potential.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Electrochemistry
Sanja Stevanovic, Dusan Tripkovic, Aleksandra Gavrilovic-Wohlmuther, Jelena Rogan, Uros Lacnjevac, Vladislava Jovanovic
Summary: The PtSn/C catalyst shows better performance in CO tolerance and methanol oxidation reactions compared to PtSnO2/C catalyst, indicating the advantage of alloying Sn with Pt.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2021)
Article
Materials Science, Coatings & Films
Kristina Mojsilovic, Nenad Tadic, Uros Lacnjevac, Stevan Stojadinovic, Rastko Vasilic
Summary: This study discusses the growth of thin oxide coatings on aluminum substrate in water-based sodium tungstate electrolyte by plasma electrolytic oxidation (PEO) and experimentally illustrates it using a unique ultra-low duty cycle pulsed direct current (DC) power supply. Elements present in micro-discharges during PEO processing are identified using standard optical emission spectroscopy (OES) technique, and the obtained coatings are characterized with respect to their morphology, chemical composition, and phase composition. The coatings are found to be composed of Al, O, and W, with low roughness and porosity, and partial crystallization reveals the presence of WO3, W3O8, and gamma-Al2O3 crystalline phases.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Mineralogy
Tamara Dordevic, Ljiljana Karanovic
Summary: Crystal structures of three novel synthetic SrM-arsenates (M = Ni and Fe3+) were reported, which are isostructural or structurally related to well-known minerals. Various characterization techniques revealed their similarities to minerals from tsumcorite, carminite and brackebuschite groups.
MINERALOGICAL MAGAZINE
(2021)
Article
Materials Science, Multidisciplinary
Kristina Mojsilovic, Uros Lacnjevac, Srna Stojanovic, Ljiljana Damjanovic-Vasilic, Stevan Stojadinovic, Rastko Vasilic
Summary: This study utilized plasma electrolytic oxidation to prepare oxide coatings on aluminum, and characterized the coatings using various methods. The surface morphology and properties of the coatings showed significant changes with PEO processing time. Coatings containing Ce-loaded zeolites exhibited higher photocatalytic activity.
Article
Chemistry, Multidisciplinary
Predrag Dabic, Volker Kahlenberg, Biljana Krueger, Marko Rodic, Sabina Kovac, Jovan Blanusa, Zvonko Jaglicic, Ljiljana Karanovic, Vaclav Petricek, Aleksandar Kremenovic
Summary: A new ambient-temperature hexagonal polymorph of tripotassium ytterbium(III) disilicate has been synthesized and found to undergo a phase transformation to a novel low-temperature orthorhombic phase. The two crystal forms have distinct structures, each composed of specific layers. Magnetic characterization suggests that the phase transformation does not significantly impact the magnetic properties of the compound.
ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Mila Krstajic N. Pajic, Ana S. Dobrota, Anca Mazare, Sladana Durdic, Imgon Hwang, Natalia V. Skorodumova, Dragan Manojlovic, Rastko Vasilic, Igor A. Pasti, Patrik Schmuki, Uros Lacnjevac
Summary: This study reveals that the surface effects of hydrogenated TiO2 nanotube arrays can convert Os, an unexplored platinum group metal, into a highly active electrocatalyst for the hydrogen evolution reaction (HER). The optimized Os@TNT composite exhibits low overpotential and stable performance in acidic medium, offering new possibilities for the fabrication of cost-effective PGM-based catalysts.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Analytical
M. D. Obradovic, U. C. . Lacnjevac, V. V. Radmilovic, A. Gavrilovic-Wohlmuther, J. Kovac, J. R. Rogan, V. R. Radmilovic, S. Lj. Gojkovic
Summary: Two types of Cu-modified Pd catalysts, Cu@Pd/C and Pd-Cu/C, were prepared and studied for the ethanol oxidation reaction (EOR) in alkaline solution. The activity of the catalysts was enhanced by the intimate contact of Pd with Cu atoms, and the optimal atomic Pd:Cu ratio was found to be between 2:1 and 4:1. The Cu@Pd/C catalyst showed the highest activity under potentiodynamic conditions, while Pd-Cu/C was superior during the potentiostatic test. All bimetallic catalysts outperformed Pd/C in terms of mass activity. Pt/C exhibited higher EOR activity compared to Pd-based catalysts at low potentials, but with a significant decline over a 30-min potentiostatic stability test.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Lucija Hok, Robert Vianello, Dubravka Matkovic-Calogovic, Ljitjana Karanovic, Sundica Roca, Jaroslaw Jazwinski, Manna Tasner, Darko Vusak, Manjana Dakovic, Zora Popovic
Summary: In this study, seven nickel(II) thiocyanate complexes were synthesized and their crystal structures and coordination modes were investigated under varying isonicotinamide concentrations. They were characterized by single-crystal X-ray diffraction and DFT calculations, and some complexes were also analyzed using NMR and IR spectroscopy.
Article
Chemistry, Inorganic & Nuclear
Daniel M. Mijailovic, Vuk V. Radmilovic, Uros C. Lacnjevac, Dusica B. Stojanovic, Karen C. Bustillo, Vladimir D. Jovic, Velimir R. Radmilovic, Petar S. Uskokovic
Summary: A simple two-step procedure was reported for fabricating tetragonal CoMn2O4 spinel nanocrystals on carbon fibers, demonstrating good electrochemical performance and long-term stability in an alkaline aqueous solution. The composite electrode exhibited high specific capacity and energy density, with excellent cycling stability in a symmetrical coin-cell device.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Multidisciplinary
Suncica Roca, Lucija Hok, Robert Vianello, Mladen Borovina, Marijana Dakovic, Ljiljana Karanovic, Drazen Vikic-Topic, Zora Popovic
Article
Chemistry, Physical
Uros Lacnjevac, Rastko Vasilic, Ana Dobrota, Sladana Durdic, Ondrej Tomanec, Radek Zboril, Shiva Mohajernia, Nhat Truong Nguyen, Natalia Skorodumova, Dragan Manojlovic, Nevenka Elezovic, Igor Pasti, Patrik Schmuki
JOURNAL OF MATERIALS CHEMISTRY A
(2020)
