Article
Biochemistry & Molecular Biology
Alvaro Javier Gomez Rodriguez, Dagoberto Oyola Lozano, Humberto Bustos Rodriguez, Yebrail Rojas Martinez, German Antonio Perez Alcazar, Ligia Edith Zamora Alfonso, Juan Sebastian Trujillo Hernandez
Summary: The objective of this study is to evaluate the applicability of exchange coupling between nanoparticles of Nd2Fe14B and Fe90Al10 as permanent magnets produced by surfactant-assisted mechanical alloying. The results show a significant decrease in coercive force with temperature and percentage of soft phase during the sintering process.
Article
Chemistry, Inorganic & Nuclear
Rao Shuang, Lin Chen-Sheng, He Zhang-Zhen, Chai Guo-Liang
Summary: By systematically studying the isomorphic structure R2M14B compounds with first-principles density functional theory calculations, it was found that Pr is the most suitable rare-earth element alternative to Nd in Nd2Fe14B, and Co is a more suitable substitution for Fe compared to Mn and Ni due to their significant reduction of the magnetic moment.
CHINESE JOURNAL OF STRUCTURAL CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Hai-Tian Zhang, Tao Zhang, Xiangyi Zhang
Summary: In recent years, researchers have successfully overcome inherent trade-offs between essential physical properties by engineering materials with an ordered arrangement of structural units. The structural ordering opens up unprecedented opportunities to create transformative functional materials, amplifying properties and enabling disruptive functionalities. This perspective article provides a brief overview of recent advances in ordered functional materials and discusses their application in catalytic, thermoelectric, and magnetic materials, as well as in neuromorphic computing devices and durable battery materials. The article highlights remaining scientific challenges and prospects for ordered functional materials, aiming to attract attention and drive intense studies in this field.
Article
Materials Science, Multidisciplinary
Shunda Lu, Yang Yang, Linfeng Chen, Zhen Xiang, Wei Lu
Summary: It was found that the saturation magnetization and coercivity at room temperature increased significantly with the increasing Nd2Fe14B content in the hybrid alloys. The energy product also showed enhancement. Moreover, the magnetic properties at elevated temperatures were better, making them suitable for high temperature applications.
Article
Chemistry, Physical
Lei Li, Liqun Wang, Guolai Yang, Ruizhi Wang, Hongyi Zhang, Ahmed Al-Zahran
Summary: This study investigates the magneto-mechanical behavior of sintered NdFeB under dynamic impact environment and establishes a dynamic damage constitutive model and magnetic degradation model for co-simulation. The effectiveness of the model is verified through dynamic mechanical experiments and impact demagnetization experiments.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Shanfei Zhang, Yamei Yue, Yizhuo Xu, Qi Wang, Zhuofan Li, Bin Su
Summary: Signal transmission between rigid robots is usually achieved through rigid electronic components, but these are difficult to use in fully flexible soft robots. Liquid metal (LM) can be used as an alternative material for signal transmission in fully flexible soft robots due to its flexibility and superior electrical conductivity. This study presents a fully flexible soft robot consisting of a soft tentacle integrated with liquid metal spiral wire and a body made of Nd2Fe14B magnetic powders/Ecoflex composites. The robot can transmit electric signals through electromagnetic induction and can be actuated by an external magnetic field. The integration of LM into magnetic composites provides new possibilities for realizing signal transmission and advancing the development of multifunctional soft robots.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Materials Science, Multidisciplinary
A. C. Martinez-Olguin, R. Ponce-Perez, Leonardo Morales De la Garza, Maria G. Moreno-Armenta, Gregorio H. Cocoletzi
Summary: The study investigates the structural, electronic, and magnetic properties of cobalt adsorption and incorporation on the AlN surface, showing different magnetic behaviors depending on coverage and configuration.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Physics, Mathematical
David Gontier, Salma Lahbabi, Abdallah Maichine
Summary: In this study, Density Functional Theory models for translationally invariant systems were investigated, showing modifications to energy terms and deriving reduced equations in remaining directions. It was demonstrated that perfect screening exists in the Thomas-Fermi model, with decay estimates provided for electronic density away from the slab. The Pauli principle is replaced by a penalization term in Kohn-Sham models, and properties of the minimizer in the reduced Hartree-Fock model were elucidated.
COMMUNICATIONS IN MATHEMATICAL PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Federico Spizzo, Gabriele Greco, Lucia Del Bianco, Marco Coisson, Nicola M. Pugno
Summary: This study presents a new hybrid material composed of spider silk thread and magnetostrictive FeCo alloy, which exhibits excellent mechanical and electrical properties. The durability, homogeneity, and response to magnetic and mechanical stimuli of the composite are validated. The material shows potential for magneto-electronics applications, including magnetic actuators and strain/stress sensors.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Polymer Science
Zheng Tang, Chaofan Chang, Feng Bao, Lei Tian, Huichao Liu, Mingliang Wang, Caizhen Zhu, Jian Xu
Summary: This study validated the feasibility of predicting the static dielectric constants of polymer materials using DFT method combined with B3LYP functional, and simulated the dielectric constants of three typical polymer materials with excellent agreement to experimental data, demonstrating great potential for future applications.
Article
Chemistry, Inorganic & Nuclear
L. Wang, M. G. Zhang, J. D. Guo, B. H. Zhang, X. H. Xu
Summary: Nd2Fe14B-based magnetic powders were synthesized via a hydrothermal technique and annealing process, with coercivity controlled by nucleation of reversed magnetic domains within the particles.
JOURNAL OF SOLID STATE CHEMISTRY
(2021)
Article
Environmental Sciences
David Souriou, Sima Kadkhodazadeh, Xavier Derobert, David Guilbert, Amine Ihamouten
Summary: This study introduces a Structural Health Monitoring technology that can detect and track the presence of chloride ions in concrete cover. The experimental results validate the concept of this technology and demonstrate that the mass loss of the patch significantly affects the detection results.
Review
Physics, Applied
Cui Jin, Liangzhi Kou
Summary: This review summarizes recent research progress on non-van der Waals magnetic materials, including synthesis methods, intrinsic properties, and electronic/magnetic properties influenced by doping, surface passivation, and heterostructure constructions. Promising research directions and challenges are also discussed, aiming to provide guidelines for further exploration in the field of spintronic devices.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Nanoscience & Nanotechnology
Jong-Hyok Kim, Chol-Song Kim
Summary: This study estimates the magnetic performance of an isotropic Nd2Fe14B/a-Fe nanocomposite system with an inter-granular phase through micromagnetic simulation. The results show that the magnetic performance is strongly influenced by the size of Nd2Fe14B particles and the thickness of the a-Fe phase. The simulated energy product provides a good approximation to the experimental one, and the optimal size of Nd2Fe14B particles and thickness of the a-Fe phase for the highest energy product are determined. The simulation is expected to contribute to the preparation of high-performance isotropic Nd2Fe14B/a-Fe nanocomposite magnets with an inter-granular soft-magnetic phase.
Article
Chemistry, Physical
Jiao Ai, Si-Rong Cheng, Yu-Jia Miao, Ping Li, Huan-Xia Zhang
Summary: An innovative approach to fabricate lightweight, highly sensitive 3D conductive nanofiber sponges for pressure sensors was reported. The 3D sponges were prepared by self-assembly of electrospun carbon nanofibers/aminated Fe3O4 and reduced graphene oxide (rGO) nanosheets. The orientation and distribution of the graphene nanosheets were further regulated by an external magnetic field to improve the sponge's performance.
Article
Materials Science, Multidisciplinary
Zhi Li, Ming Yue, Xubo Liu, Hongguo Zhang, Weiqiang Liu, Yuqing Li, Zhipeng Zhang
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2020)
Article
Engineering, Electrical & Electronic
X. B. Liu, M. S. Kesler, M. F. Besser, M. J. Kramer, M. A. McGuire, I. C. Nlebedim
Summary: High coercivity and anisotropic Nd-Fe-B powders for anisotropic bonded magnets were prepared by hydrogenation-disproportionation-desorption-recombination (HDDR) method. The processing hydrogen pressure is closely related to the formation of c-axis crystal texture of Nd2Fe14B phase, with a critical hydrogen pressure, P-crit, promoting the formation of c-axis texture. The existence of P-crit is attributed to the thermodynamics and kinetics during HDDR process.
IEEE TRANSACTIONS ON MAGNETICS
(2021)
Article
Engineering, Electrical & Electronic
X. B. Liu, Ikenna C. Nlebedim, Zaven Altounian
Summary: By partially replacing Ce with Nd and/or Pr, the performance of Ce-Fe-B magnets can be improved, with the distribution of Nd/Pr playing a key role in the microstructure. Optimizing magnetic properties can be achieved by manipulating the distribution profile of chemical elements based on their subtle differences in thermodynamic properties.
IEEE TRANSACTIONS ON MAGNETICS
(2021)
Article
Physics, Applied
X. B. Liu, Kinjal Gandha, I. C. Nlebedim, M. Parans Paranthaman
Summary: The alignment of magnetic powder in anisotropic bonded magnets is influenced by the filling fraction, binder type, and processing parameters. A good alignment can be achieved through an alignment magnetic field that is approximately twice its coercivity.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Chemistry, Physical
Baozhi Cui, Xubo Liu, Cajetan I. Nlebedim, Jun Cui
Summary: Samarium-cobalt sintered magnets exhibit excellent magnetic properties, thermal stability, and corrosion resistance, but their brittleness limits their applications. This paper presents a novel approach to improve the mechanical resilience of the magnets by engineering heterogeneous microstructures, resulting in increased flexural strength without significant impact on their magnetic properties. The developed technology is compatible with existing magnet manufacturing processes and can be readily adopted by the magnet industry.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
Kinjal Gandha, Mariappan Parans Paranthaman, Haobo Wang, Xubo Liu, Ikenna C. Nlebedim
Summary: This research demonstrates the additive printing of anisotropic NdFeB + SmFeN and NdFeB bonded magnets with excellent magnetic properties, corrosion resistance, and thermal stability.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Physical
A. Thayer, I Hlova, Y. Mudryk, X. Liu, V. K. Pecharsky
Summary: Single-phase LaFe13-x-yMxSiyN3 compounds were synthesized by ammonia flow, exhibiting increased lattice expansion and magnetic ordering transitions as a result of nitrogenation. The nitrides show weak and broad magnetocaloric effects, and stability below 750 K but decompose above this temperature.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Baozhi Cui, Xubo Liu, I. C. Nlebedim, Jun Cui
Summary: Samarium-cobalt (Sm-Co) sintered magnets have excellent magnetic properties and thermal stability, but their brittleness limits their applications. By incorporating a small amount of Sm2O3 particles, the mechanical properties of these magnets can be improved. The addition of Sm2O3 refines the grain size and enhances the flexural strength of the magnets, while remaining compatible with existing manufacturing processes.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Baozhi Cui, Xubo Liu, I. C. Nlebedim, Jun Cui
Summary: This study reports the modified microstructure, refined grain size, enhanced flexural strength, and magnetic properties of La2O3, MgO, and CaF2-doped Sm2(Co, Fe,Cu,Zr)17 sintered magnets. The correlations between microstructure, phase composition, and mechanical and magnetic properties were studied. Doping a small amount of La2O3, MgO, or CaF2 significantly refined the grain size and improved the flexural strength of the magnets. The rational design of CaF2- or La2O3-doped microstructure can be an economical and effective method for producing toughened Sm-Co sintered magnets with high magnetic performance.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Wei Tang, Gaoyuan Ouyang, Xubo Liu, Jing Wang, Baozhi Cui, Jun Cui
Summary: The study finds that by introducing a non-magnetic grain boundary phase, the loss of coercivity in MnBi magnets can be significantly reduced, leading to improved performance.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
X. B. Liu, I. C. Nlebedim
Summary: Critical La2Fe14B compound has the potential to be a gap permanent magnet, but it decomposes below 1067 K. The stability and coercivity of La2Fe14B magnet have been studied using DFT calculation and micromagnetic simulation. The addition of a thin layer of alpha-Fe reduces the coercivity sharply, and partial replacement of La by other rare-earth elements can enhance the structural stability.
Article
Nanoscience & Nanotechnology
X. B. Liu, D. H. Ryan, Z. Altounian
Summary: The phase stability and magnetocrystalline anisotropy (MCA) of tetragonal Mn(Al1-xGax) with the L1(0)-type structure (P4/mmm) were investigated using first-principles density functional calculations. The results showed that replacing Al with Ga suppressed the formation of Mn-5(Al,Ga)(8) and improved the thermal stability of the L1(0) phase without significant changes in the total magnetic moment. The MCA was mainly contributed by Mn atoms and increased from 0.25 meV/f.u. (x = 0) to 0.34 meV/f.u. (x = 1). Doping with Ga enhanced the thermal stability of the L1(0) structure and increased the effective magnetic anisotropy field.
Article
Chemistry, Physical
Jeotikanta Mohapatra, Xubo Liu, Pramanand Joshi, J. Ping Liu
Summary: Iron (Fe) is an important ferromagnetic element with high magnetic moment and Curie temperature, and it is widely used in technologies and industries. While Fe-based materials are mostly used as soft magnetic materials due to low magneto-crystalline anisotropy (MCA), recent research has shown promising evidence for achieving high MCA in Fe-based hard magnetic materials without rare-earth elements. This paper reviews the history and recent developments of Fe-based hard and semi-hard magnetic materials, focusing on the mechanisms of high MCA and the related crystal and electronic structures.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Xubo B. Liu, Kinjal Gandha, Haobo Wang, Kaustubh Mungale, Uday Kumar Vaidya, Ikenna C. Nlebedim, Mariappan Parans Paranthaman
Summary: Highly dense and magnetically anisotropic rare earth bonded magnets were fabricated using a batch extrusion process and compression molding technology. The magnets had a mixture of Sm-Fe-N and Nd-Fe-B particles with a polyphenylene sulfide binder. The hybrid bonded magnet had a high density and a maximum energy product, with the fine-sized Sm-Fe-N particles filling the gap between the larger Nd-Fe-B particles.
Article
Materials Science, Multidisciplinary
Harshida Parmar, Xubo Liu, Kinjal Gandha, M. Parans Paranthaman, Ikenna C. Nlebedim
Summary: This study investigates the effect of magnetic field annealing on relieving the stress induced during milling of Nd-Fe-B sintered magnets, and explores the influence of MA processing parameters and particle size on the magnetic properties. The results demonstrate that magnetic field annealing is more effective in improving the magnetic properties of larger particles compared to finer particles. Computational study supports the role of particle surface defects in bimodal particle distribution seen experimentally. Magnetic field annealed powder has been used successfully to develop bonded magnets with a density of 4.6 g.cm 3, consisting of 75% magnetic powder and polyamide 12 (nylon 12) polymer binder, resulting in an energy product of 11.3 MGOe.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(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)
