Article
Chemistry, Multidisciplinary
Emily Siska, Dean Smith, Ashkan Salamat, Keith V. Lawler, Barbara Lavina, Frederic Poineau, Paul M. Forster
Summary: The synthesis and phase stability of TcN, Tc2N, and a substoichiometric TcNx were demonstrated under high pressure and temperature conditions, with a previously unpredicted structure identified for TcN through crystal structure prediction.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Patric Berger, Hans Flandorfer
Summary: Lithium containing alloy systems, especially the ternary Li-Sb-Sn system, are studied as potential electrode materials for lithium ion batteries. Experimental results show that SbSn can uptake up to 15 at.% Li, forming Li3Sb and confirming the ternary phase Li8SbxSn3-x.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Metallurgy & Metallurgical Engineering
Clement Pechberty, Antoine Klein, Bernard Fraisse, Lorenzo Stievano, Romain Berthelot
Summary: Different polymorphs of Mg-Sn and Mg-Pb intermetallic compounds were prepared by high-energy mechanical alloying, among which the cubic polymorphs Mg2Sn and Mg2Pb were found to be preferentially formed during alloying process and showed compatibility with the electrolyte.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Metallurgy & Metallurgical Engineering
Clement Pechberty, Antoine Klein, Bernard Fraisse, Lorenzo Stievano, Romain Berthelot
Summary: Different polymorphs of Mg-Sn and Mg-Pb intermetallic compounds were prepared by high-energy mechanical alloying. The cubic polymorphs Mg2Sn and Mg2Pb exhibited superior alloying and dealloying performance, while other polymorphs acted as by-products or intermediate phases in the electrochemical process.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Energy & Fuels
Mehmet Erman Mert
Summary: The study investigated the efficiency of hydrogen production by doping nickel foam precursors with nickel, cobalt particles, and decorating with silver nano-domes. The catalyst NF/NiCo-2/Ag showed the best performance in terms of lower hydrogen overpotential, higher HPE, stability, and response during the electrolysis process in 1 M KOH.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Inorganic & Nuclear
S. Cahen, R. Vangelisti
Summary: In this study, a chemical vapor transport process involving DyAl3Cl12 gas species was used to intercalate dysprosium trichloride into graphite. Increasing the pressure of Cl-2 in the synthesis reactor improved the intercalation yield. The novel 1st stage DyCl3-Graphite Intercalation Compound (GIC) synthesized exhibited specific repeat distance and molecular formula.
JOURNAL OF SOLID STATE CHEMISTRY
(2021)
Article
Chemistry, Physical
Ana Cotai, Bogdan Viorel Neamtu, Florin Popa, Traian Florin Marinca, Olivier Isnard, Ionel Chicinas
Summary: This study compares HITPERM type alloys prepared by wet and dry mechanical alloying, finding that amorphization occurred after 40 hours of milling in wet conditions, but not after 100 hours in dry conditions. Various analyses were performed to investigate the thermal stability and crystallization kinetics of the amorphous powders.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Kemryn Allen-Perry, Weston Straka, Danielle Keith, Shubo Han, Lewis Reynolds, Bhoj Gautam, Daniel E. Autrey
Summary: Two-dimensional materials based on transition metal carbides, such as MXenes, have unique properties and great potential in various applications. This study investigated the magnetic properties of Ti-based MXenes and found that the magnetic properties can be tuned by chemical etching conditions, which is beneficial for designing spintronic devices.
Article
Chemistry, Physical
A. Bandyopadhyay, B. J. Sarkar, S. Sutradhar, J. Mandal, P. K. Chakrabarti
Summary: By incorporating Gd3+ ions instead of Ce4+ ions in cerium oxide lattice, improvements were made in its magneto-dielectric properties. Nonlinearity due to magnetic ordering was introduced in the doped sample Ce0.90Gd0.10O2-delta, indicating a transition to ferromagnetic phase. Transmission electron microscopy study revealed important morphological behavior.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Ceramics
Marcin Godzierz, Piotr Olesik, Lukasz Otulakowski, Tomasz Pawlik, Karolina Olszowska, Pawel Chaber, Olha Masiuchok, Hanna Myalska-Glowacka, Jakub Smolen, Bartlomiej Toron, Piotr Szperlich, Urszula Szeluga, Slawomira Pusz
Summary: In this study, a novel, facile, and highly efficient reverse co-precipitation method was used to synthesize nanocrystalline bismuth ferrite (BFO) powder. The proposed method is cost-efficient and environmentally friendly. X-ray diffraction and scanning electron microscopy were used to analyze the crystal structure, phase composition, and morphology of the synthesized powders. The obtained materials showed excellent piezoelectric properties, comparable to those of praseodymium, samarium, or europium doped BiFeO3 ceramic.
CERAMICS INTERNATIONAL
(2023)
Article
Electrochemistry
Yu-Chuan Chien, He Li, John Lampkin, Stephen Hall, Nuria Garcia-Araez, William R. Brant, Daniel Brandell, Matthew J. Lacey
Summary: This study demonstrates that mechanical compression at elevated temperature can effectively increase the capacity density of lithium-sulfur battery electrodes and extend their cycle life. It highlights the importance of a homogeneous electrode structure in the lithium-sulfur system.
BATTERIES & SUPERCAPS
(2022)
Article
Chemistry, Physical
Joshua P. Smith, Kurt E. Sickafus, Claudia J. Rawn, Cordell Delzer, Ching-Fong Chen, Charles Melcher
Summary: Li-containing garnet compounds have potential as transparent ceramic dual-mode scintillators, with Li5La3Ta2O12 showing promise due to its properties. This study focused on establishing thermal processing conditions for a sol-gel method and consolidating powders to form high-density ceramics. The experiments showed the presence of two cubic Li5La3Ta2O12 garnet phases with different lattice parameters, indicating a remaining excess of Li in the ceramics.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Electrochemistry
Benjamin Strehle, Jiyoung Yoon, Franziska Friedrich, Hubert A. Gasteiger
Summary: Li- and Mn-rich layered oxides have great potential as next-generation cathode active materials (CAM) for automotive applications. However, their commercialization depends on addressing practical challenges such as cost and energy density. In this study, we investigated different synthesized materials and identified two important material metrics that can predict the electrochemical performance of Li- and Mn-rich CAMs.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Physics, Applied
I. I. Aliyev, S. Sh. Ismailova, R. M. Rzayev, A. N. Mamedov, Kh. M. Gashimov, N. K. Karimova
Summary: Alloys of the As2Se3-CuCr2Te4 system were synthesized and their physico-chemical properties were investigated. The phase diagram of the system was found to be quasi-binary of the eutectic type, with small single-phase fields and solid solution areas based on the original components.
MODERN PHYSICS LETTERS B
(2022)
Article
Chemistry, Physical
Samiran Misra, Debanjana Pahari, Souvik Giri, Sreeraj Puravankara, Partha P. Jana
Summary: Cu-Zn-Sn ternary phases were synthesized by high-temperature solid-state synthesis, adopting gamma-brass structure with an extended homogeneity range. X-ray diffraction analyses show the ternary compounds crystallize in P (4) over bar 3m space group. The ternary phases exhibit excellent electrochemical properties for lithium and sodium-ion storage applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
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)