Article
Materials Science, Multidisciplinary
Chendong Zhao, Jinshan Li, Yudong Liu, William Yi Wang, Hongchao Kou, Eric Beaugnon, Jun Wang
Summary: This paper investigates the effect of phase transformation on the mechanical and magnetic properties in multi-phase systems, using the AlCoCrFeNi high-entropy alloy as a candidate. Changes in volume fractions of different phases have divergent effects on mechanical and magnetic properties, with the formation of FCC phase positively affecting mechanical properties and the volume fraction of BCC phase playing a major role in determining magnetic properties.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Chendong Zhao, Jinshan Li, Yudong Liu, Xiao Ma, Yujie Jin, William Yi Wang, Hongchao Kou, Jun Wang
Summary: The study investigates the FCC to BCC/B2 phase transformation in AlCoCrFeNi HEA, revealing that increasing heat treatment temperature and duration leads to increased yield strength and saturation magnetization but decreased fracture strain. Optimizing the transformation and size of B2 phases can achieve an excellent combination of mechanical and magnetic properties.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Xuesong Li, Jing Zhou, Laiquan Shen, Baoan Sun, Haiyang Bai, Weihua Wang
Summary: This study achieves excellent comprehensive soft magnetic properties with high saturation magnetic flux density and low coercivity through the construction of a transitional microstructure in an FeCo-based alloy.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Physical
Atakan Tekgul
Summary: The Ni-54(FeMn)(19)Ga-27 Heusler alloy exhibits a mixed-phase structure with ferromagnetic to paramagnetic phase transition at room temperature and a high Curie temperature. The alloy has a saturation magnetization of 53.97 Am(2)kg(-1) under 2 T magnetic field and shows a second-order phase transition with a magnetic entropy change of about 1.5 J kg(-1)K(-1) under the same magnetic field.
Article
Chemistry, Physical
Xiaohua Tan, Lingmiao Chen, Mengxin Lv, Wenfeng Peng, Hui Xu
Summary: The effects of individual FCC and BCC phases on the mechanical and magnetic properties of FeCoNi(CuAl)(0.8) HEA were investigated. The BCC phase showed higher nano-hardness and saturation magnetization, and the overall properties of the dual-phase HEAs could be tailored by adjusting the volume fraction of each phase.
Article
Multidisciplinary Sciences
Hao Wang, Dengke Chen, Xianghai An, Yin Zhang, Shijie Sun, Yanzhong Tian, Zhefeng Zhang, Anguo Wang, Jinqiao Liu, Min Song, Simon P. Ringer, Ting Zhu, Xiaozhou Liao
Summary: In situ straining transmission electron microscopy experiments on the Cantor high-entropy alloy (HEA) of CrMnFeCoNi demonstrate a crystalline-to-amorphous phase transformation in ultrafine-grained microstructures. The increase of crack-tip dislocation densities due to high lattice friction and grain boundary resistance triggers the transformation. The formation of amorphous nanobridges in the crack wake dissipates strain energies, providing effective toughening mechanisms for HEAs.
Article
Materials Science, Multidisciplinary
Tianxin Li, Shudao Wang, Wenxue Fan, Yiping Lu, Tongmin Wang, Tingju Li, Peter K. Liaw
Summary: TiZrHfNbTa refractory high-entropy alloys (RHEAs) exhibit poor phase stability at intermediate temperatures. By calculating phase diagrams, a Ta-free and Hf-depleted Ti30Zr30Hf16Nb24 RHEA with outstanding phase stability was designed. The cold-rolled plus recrystallization-annealed (CR+A) Ti30Zr30Hf16Nb24 RHEA contained (Ti, Zr)-rich nano-precipitates controlled by the spinodal decomposition mechanism, which contributed to its superior strength-ductility combination.
Article
Materials Science, Multidisciplinary
Hongchao Li, Jun Wang, Haoxue Yang, Mengmeng Zhao, William Yi Wang, Ruihao Yuan, Jinshan Li
Summary: This study investigated the effect of thermomechanical treatments on the mechanical properties of high-entropy alloy Al0.5CoCrFeNi. The results showed that the nanoscale B2 phases formed through aging significantly enhanced the strength of the alloy, and pre-deformation facilitated the formation of B2 phases and further improved the strength of the alloy.
MATERIALS CHARACTERIZATION
(2022)
Article
Nanoscience & Nanotechnology
Jiale Man, Baolin Wu, Guosheng Duan, Lu Zhang, Gang Wan, Yandong Liu, Claude Esling
Summary: A Ni-rich NiFeCoCr-based high entropy alloy doped with (W, Mo, Al, Ti, Nb) was designed and prepared. After thermo-mechanical processing, the alloy exhibited superior mechanical properties attributed to its heterogeneous microstructure and the presence of secondary phases and dislocations.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Ni Deng, Jun Wang, Jiaxiang Wang, Yixuan He, Ziyang Lan, Ruifeng Zhao, Eric Beaugon, Jinshan Li
Summary: The study demonstrates that using a high static magnetic field can improve the properties of AlCoCrCuFeNi high entropy alloy, especially the content of ferromagnetic FeCr-rich BCC phase. Introducing a high magnetic field not only enhances the yield stress and plastic strain, but also increases the saturation magnetization value.
Article
Materials Science, Multidisciplinary
Kuan Gao, Yuexin Chu, Weihua Zhou, Yong Tian, Yong Zhang, Yi Li
Summary: This study systematically investigates the phase inversion phenomenon in a high-Al-content B2 refractory high-entropy alloy (RHEA) through thermo-mechanical treatment. The grains of the single B2 phase transform inversely to the BCC+B2 microstructure with a dispersion of spherical B2 precipitates in the BCC grains. The phase inversion process enhances the tensile ductility of the RHEA while maintaining its high specific strength.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Kaifan Lin, Shih-Che Chen, Hsin-Chih Lin, Hung-Wei Yen
Summary: This study focuses on developing a low-cost medium entropy alloy with desirable mechanical properties. By adjusting the component ratio and adding silicon, a Fe50Mn17.5Cr12.5Co10 Ni5Si5 MEA with a single FCC phase was successfully developed. The processed alloy exhibits improved mechanical properties, with the cryogenic-deformed MEA showing higher yield strength and tensile strength.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Nikhil Rai, Priyabrata Das, Srikant Gollapudi
Summary: We developed a thermodynamics-based approach to identify chemical compositions that support the transformation from amorphous to high entropy alloy. Two new parameters, phase selection value and molar volume dispersity, were introduced and seven multi-component compositions were proposed. The analysis revealed that bulk metallic glasses may not be supportive of this transformation.
MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING
(2022)
Article
Engineering, Manufacturing
Yansong Zhang, Huaming Wang, Yanyan Zhu, Shuquan Zhang, Fang Cheng, Junwei Yang, Bing Su, Chen Yang
Summary: Lightweight refractory high-entropy alloys (LRHEAs) have lower density and better ductility compared to other refractory high-entropy alloys. Laser directed energy deposition additive manufacturing (LDED) technology is an ideal process for preparing LRHEAs. This study investigated the microstructure evolution and the plastic deformation mechanisms of a new LRHEA Al0.3NbTi3VZr1.5 fabricated by LDED.
ADDITIVE MANUFACTURING
(2023)
Article
Chemistry, Multidisciplinary
Xiaozhe Wang, Suyang Sun, Jiang-Jing Wang, Shuang Li, Jian Zhou, Oktay Aktas, Ming Xu, Volker L. Deringer, Riccardo Mazzarello, En Ma, Wei Zhang
Summary: The layered crystal structure of Cr2Ge2Te6 exhibits ferromagnetic ordering in the two-dimensional limit, making it a promising candidate for spintronic applications. However, the non-crystalline phase induced by external voltage pulses may lead to changes in the magnetic properties. This study demonstrates that Cr2Ge2Te6 preserves its spin-polarized nature in the amorphous phase but undergoes a magnetic transition to a spin glass state at low temperatures. Quantum-mechanical computations reveal that this transition is due to strong distortions in the Cr-Te-Cr bonds and the overall increase in disorder upon amorphization. The tunable magnetic properties of Cr2Ge2Te6 can be utilized for multifunctional magnetic phase-change devices that can switch between crystalline and amorphous states.
Article
Materials Science, Multidisciplinary
Minxiang Pan, Zhong Li, Qiong Wu, Hongliang Ge, Hui Xu
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2019)
Article
Chemistry, Physical
Zhong Li, Yong Gu, Chenxu Wang, Minxiang Pan, Huawei Zhang, Zhongyuan Wu, Xueling Hou, Xiaohua Tan, Hui Xu
JOURNAL OF ALLOYS AND COMPOUNDS
(2019)
Article
Materials Science, Multidisciplinary
Yong Gu, Zhong Li, Chenxu Wang, Zhongyuan Wu, Xiaomeng Feng, Yin Zhang, Xiaohua Tan, Hui Xu
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2020)
Article
Chemistry, Physical
Chenxu Wang, Zhongyuan Wu, Xiaomeng Feng, Zhong Li, Yong Gu, Yin Zhang, Xiaohua Tan, Hui Xu
Article
Electrochemistry
Hongxia Li, Hua Yang, Zhong Li, Xiaoyang Wang, Xianguo Liu, Sateesh Bandaru, Xuefeng Zhang
Summary: The FeNi3/TiO2 composite, consisting of vertically layered double hydroxide, exhibits a high density of active sites, promotes the exchange of ions and electrons, and synergistically suppresses the electron-hole recombination. The optimized composite shows a low overpotential and small Tafel slope, with no obvious current drop during stability testing. First-principles calculations demonstrate a synergistic effect of the FeNi3/TiO2 composite with the smallest theoretical overpotential.
ELECTROCHIMICA ACTA
(2021)
Article
Physics, Applied
Zhong Li, Hongyan Li, Tongpan Ying, Xianguo Liu, Hongxia Li, Yueqin Shi, Wenchao Chen, Xuefeng Zhang
Summary: The study reveals that impedance matching is the most crucial factor influencing the microwave absorption performance of corncob-derived carbon/Ni composites. Additionally, EM loss ability and attenuation constant also play a role in the absorption performance, while multi-reflection and scattering are secondary factors.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Engineering, Electrical & Electronic
Zhong Li, Zhuangzhuang Li, Hua Yang, Hongxia Li, Xianguo Liu
Summary: In this study, triple insulating layers, including phosphoric acid, sodium silicate, and silicone resin, were fabricated to optimize the molding ability and thermal stability of FeSiAl powder. The results show that phosphoric acid can form a phosphate insulating layer, while sodium silicate can further improve the thermal stability of the magnetic core. By combining different insulating layers, the total core loss of the magnetic cores can be reduced.
JOURNAL OF ELECTRONIC MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
Hongxia Li, Hua Yang, Zhuangzhuang Li, Zhong Li, Xianguo Liu
Summary: The study introduces an inorganic-organic hybrid insulating layer designed for FeSiAl powder, resulting in excellent soft magnetic performance, mechanical strength, and corrosion resistance.
JOURNAL OF ELECTRONIC MATERIALS
(2022)
Article
Materials Science, Ceramics
Zhong Li, Zhuangzhuang Li, Xingyu Liu, Shuyan Shi, Hongxia Li, Xianguo Liu
Summary: Core/shell structured FeSiAl/MoO3 soft magnetic composites were fabricated using a two-step heat treatment process. The effects of ammonium molybdate (AHM) content and annealing temperature on the properties of the composites were investigated. The results showed that the electrical resistivity and mechanical properties of the composites can be regulated by controlling the AHM content. The optimal content of 15 wt% AHM resulted in the highest crushing strength and lowest core loss.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Hongjin Liu, Hongyan Li, Long Long, Xianguo Liu, Erpan Zhang, Zhong Li, Hongxia Li, Menglin Yu
Summary: This work presents a new strategy for achieving good microwave absorption performances in microscale soft magnetic materials by optimizing electromagnetic parameters and obtaining a flake structure and high-resistance phosphate layer. Adding a small amount of phosphoric acid can result in minimal reflection loss and a wide effective bandwidth.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Ruiyi Zheng, Zhongyuan Wu, Mengya Chen, Bin Li, Yong Yang, Zhong Li, Xiaohua Tan, Hui Xu
Summary: This study investigates the AC magnetic properties and microstructure of FeCoNi1+xCu1-xAl high-entropy alloys. The results indicate that adjusting the amounts of Ni and Cu can improve the total loss, AC coercivity, and AC applied field of the alloy. Specifically, when x = 0.1, the performance decreases by 40% to 43% at 50 Hz, while x = 0.7 exhibits optimized magnetic properties. The study also reveals the dominant loss mechanisms at different frequencies and the changes in microstructures with FCC and BCC phases in the alloy. This research provides valuable insights for exploring novel soft magnetic materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Zhong Li, Xingyu Liu, Xianguo Liu
Summary: This study successfully prepared FeCoNiCuTi@C nanocapsules with a core-shell structure, which exhibited excellent microwave absorption performance. The carbon shell protected the magnetic elements, improved electromagnetic parameters, and enhanced resonance frequency, resulting in good microwave absorption effects.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Guohua Bai, Junhong Liu, Sateesh Bandaru, Zhong Li, Jiayi Sun, Yanan Zhang, Zhenhua Zhang, Xiaolian Liu, Hongxia Li, Junfu Chen, Xuefeng Zhang
Summary: In this study, liquid-phase sintering techniques were used to prepare FeSiAl/MoO3 soft magnetic composites, achieving consolidation and insulation of metallic magnetic particles in one step. The redox reaction between FeSiAl and MoO3 melt greatly reduced the interfacial energy, facilitating wetting and densification during sintering. The resulting FeSiAl/MoO3 SMC exhibited high crushing strength, cut-off frequency, permeability, and low power loss, providing a new concept for designing SMCs and expanding the application of liquid-phase sintering.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Zhong Li, Zhenhua Zhang, Xiaolian Liu, Hongxia Li, Erpan Zhang, Guohua Bai, Hui Xu, Xianguo Liu, Xuefeng Zhang
Summary: In this study, multiple coherent interfaces were introduced in Fe26Co25Ni20Cu15Al13.1Ga0.9 alloy to achieve a balance among strength, plasticity, and coercivity. The strength was increased to 414.6 MPa by the synergistic enhancement of FCC/BCC dual-phase interface, L12 nanoprecipitates in FCC phase, and B2 nanoprecipitates in BCC phase. The alloy exhibited excellent plasticity exceeding 200% due to the fully coherent multiple interfaces (FCC/BCC, FCC/L12, and BCC/B2). The smaller size of L12 and B2 nanoprecipitates and the multiple coherent interfaces allowed for low coercivity of 334 A/m.
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)
