Article
Materials Science, Ceramics
Liang Xu, Wei-Ming Guo, Qiu-Yu Liu, Yan Zhang, Li-Xiang Wu, Yang You, Hua-Tay Lin
Summary: The effects of ZrO2 particle size and borothermal reduction routes on the synthesis and densification of ZrB2 were investigated. Finer ZrO2 powders resulted in finer ZrB2 powders, regardless of the reduction routes. The oxygen content in the ZrB2 powders significantly influenced the relative density and Vickers' hardness of the resulting ceramics.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Ceramics
Tao Su, Lin Chen, Chenkai Qu, Jianyu Li, Liang Lv, Yuncheng Wang, Xiaolan Ji, Haitao Yun, Jing Feng
Summary: CeO2-YTaO4 ceramics with different CeO2 doping concentrations were successfully synthesized using the SPS technique, and their lattice properties, thermodynamic properties, and phase stability were investigated. The results showed that the samples with 9 mol% CeO2 doping exhibited the lowest thermal conductivity and higher thermal expansion coefficient, indicating good thermal insulation performance and higher working temperature.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Review
Materials Science, Ceramics
Xiao Peng, Zhu Yulin, Wang Song, Yu Yiping, Li Hao
Summary: TaxHf1-xC solid solution ceramics, with characteristics of high melting points, high hardness, low coefficient of thermal expansion, excellent oxidation resistance, and ablation resistance, show excellent mechanical and oxidation properties when Ta/Hf ratio is approximate 1.
JOURNAL OF INORGANIC MATERIALS
(2021)
Article
Materials Science, Ceramics
Si-Chun Luo, Wei-Ming Guo, Kevin Plucknett, Hua-Tay Lin
Summary: In this work, fine-grained dual-phase high-entropy ceramics were successfully prepared by adjusting the content of B4C and C in the precursor powders. The combination of pinning effect and the boro/carbothermal reduction approach significantly reduced the average grain size, resulting in improved hardness and fracture toughness of the ceramics.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Jian Fu, Zide Yu, Aiwen Xie, Ziyi Yu, Zhengqian Fu, Xuewen Jiang, Tianyu Li, Ruzhong Zuo
Summary: In this study, in-situ synchrotron x-ray diffraction and transmission electron microscopy were conducted to investigate the structural mechanism of BF-PT-0.19Ba(Zr,Ti)O3 high-temperature piezoceramic. It was found that an irreversible transition from tetragonal phase (T phase) to rhombohedral phase (R phase) occurred after poling, leading to significantly enhanced irreversible domain switching of both R and T phases. This study provides a new mechanism for designing high-performance high-temperature piezoelectric ceramics.
Article
Materials Science, Ceramics
Yue Wu, Weichao Bao, Xiao-Qin Shen, Ji-Xuan Liu, Yuan Qin, Yongcheng Liang, Fangfang Xu, Guo-Jun Zhang
Summary: ZrB2-based solid solution ceramics with different mixing entropies were prepared and it was found that the formation of a single-phase solid solution is independent of the mixing entropy. The addition of other diborides promotes densification and reduces particle size. Samples with higher mixing entropy have finer grain size, higher hardness, and modulus.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
Fanqiang Lin, Yuanming Lai, Baoyang Li, Yuanxun Li, Weiping Gong, Qin Zhang, Mingjun Xie, Chongsheng Wu
Summary: MgTi1-x(Co1/3Nb2/3)(x)O-3 ceramics were prepared by a solid-state reaction method. The crystal structure, grain growth, dielectric properties, and temperature coefficient of resonance frequency were investigated. It was found that the type and content of ions have an influence on the solubility of phases, formation of secondary phase, and grain growth. The impact of TiO6 octahedral distortion and ion polarizability on dielectric properties and temperature coefficient of resonance frequency were systematically discussed.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Shijie Wang, Yafeng Yang, Junyan Cui, Xinhong Liu, Shaowei Zhang, Quanli Jia
Summary: High performance porous ZrB2 ceramics were successfully fabricated using a novel method, and the properties of the ceramics can be regulated by varying the particle size of the powders. The ceramics exhibited low linear shrinkage, high porosity, relatively high compressive strength, and low thermal conductivity.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Xinghong Zhang, Baihe Du, Ping Hu, Yuan Cheng, Jiecai Han
Summary: This study systematically investigated the thermal response, oxidation, and ablation behavior of various thermal protection materials under strong heat flux, high enthalpy, and low-pressure environments. The results showed that factors such as thermal conductivity, volumetric heat capacity, catalytic efficiency, emissivity, and oxidation characteristics played important roles in the thermal response. The study also compared and analyzed the oxidation and ablation behaviors of these materials under extreme environments, and evaluated the effect of pre-treatment on the performance and reusability of thermal protection materials.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Xianxi Li, Liwen Yan, Yibo Zhang, Xukun Yang, Anran Guo, Haiyan Du, Feng Hou, Jiachen Liu
Summary: The demand for high-performance lightweight thermal insulation materials in reusable spacecraft and vehicles has led to the development of porous silica ceramics with lightweight, ultra-low thermal conductivity, and enhanced compressive strength. By using different sizes of silica particles, the compressive strength and pore structure integrity of the ceramics were improved. These ceramics have a very low thermal conductivity and are suitable for use as thermal insulation materials in aerospace and space applications.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Xianxi Li, Liwen Yan, Anran Guo, Haiyan Du, Feng Hou, Jiachen Liu
Summary: Silica-alumina composite porous ceramics with high porosity and low thermal conductivity were prepared by the particle-stabilized foaming method. They have the potential to serve as thermal insulation material in the spacecraft industry.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Hao Sun, Bo Zhang, Qing Zhao, Yafei Liu, Ruifeng Wu, Su Zhang, Yanqing Li, Aimin Chang
Summary: This article investigates the photoluminescence and conductive properties of CaEuNbMoO8 solid solution ceramics and finds their potential applications in near-ultraviolet excited light-emitting diodes and thermistors.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Physical
K. D. Martinson, V. E. Belyak, D. D. Sakhno, A. A. Ivanov, L. A. Lebedev, L. A. Nefedova, I. B. Panteleev, V. I. Popkov
Summary: A solution-combustion-assisted approach was proposed and realized for the successful production of ultra-magnetically soft LiZnTiMn-ferrite ceramics with advanced electromagnetic performance. The study examined the microstructure and magnetic properties of the ceramics, revealing the impact of initial reagents on the morphological and structural parameters of the pre-ceramic powders. The developed ceramic materials show potential for modern radio-electronic devices in both civil and military applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Hui Chen, Yulei Zhang, Yanqin Fu, Jiachen Meng, Qing Miao, Jianhua Zhang, Hejun Li
Summary: We report a novel solid solution ((Hf0.5Ta0.5)C) ceramic nanowires, which can maintain morphological and structural stability at 1900 degrees C and exhibit one-dimensional nanostructures at 2300 degrees C. These nanowires have great potential as ideal reinforcement materials for composite materials and toughening phases of ceramics in ultra-high temperature environments, as well as excellent performance enhancement phases of functional materials. Our work may provide new insights for the development of ceramic nanowires and broaden their applications.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Hoa Thi Khanh Nguyen, Hiroaki Hanafusa, Yuri Mizukawa, Shohei Hayashi, Seiichiro Higashi
Summary: This paper introduces a new method to directly observe the transient evolution of amorphous silicon temperature and solid-phase crystallization during micro-thermal-plasma-jet irradiation. The study shows that increasing heating rate leads to higher nucleation temperature and shorter crystallization time. Micro-Raman spectroscopy results reveal a high crystalline volume fraction in solid-phase crystallized Si film, with grain size being smaller for faster heating rates.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Materials Science, Ceramics
Ryan J. Grohsmeyer, Laura Silvestroni, Gregory E. Hilmas, Frederic Monteverde, William G. Fahrenholtz, Andrea D'Angio, Diletta Sciti
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2019)
Article
Chemistry, Physical
Frederic Monteverde, Ryan J. Grohsmeyer, Austin D. Stanfield, Gregory E. Hilmas, William G. Fahrenholtz
JOURNAL OF ALLOYS AND COMPOUNDS
(2019)
Article
Materials Science, Ceramics
Frederic Monteverde, Federico Saraga, Mattia Gaboardi
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2020)
Article
Materials Science, Multidisciplinary
Stefano Mungiguerra, Anselmo Cecere, Raffaele Savino, Federico Saraga, Frederic Monteverde, Diletta Sciti
Summary: The study revealed that the SiC content has an impact on the aero-thermal resistance capabilities of ZrB2-xSiC-5Y(2)O(3) ceramics in atmospheric re-entry environment, with higher SiC content leading to improved surface temperature stability. Additionally, the durability of borosilicate glass has an influence on the aero-thermal behavior.
Article
Materials Science, Ceramics
Lun Feng, William G. Fahrenholtz, Gregory E. Hilmas, Frederic Monteverde
Summary: Dense high-entropy (Hf,Zr,Ti,Ta,Nb)B-2 ceramics with Nb contents ranging from 0 to 20 at% were produced by a two-step spark plasma sintering process. X-ray diffraction showed a single-phase with hexagonal structure in compositions without Nb, while compositions containing Nb had two phases with slightly different lattice parameters. The addition of Nb resulted in a Nb-rich second phase, increased as Nb content increased, leading to decreased grain size and increased mechanical properties.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
F. Monteverde, F. Saraga, T. Reimer, D. Sciti
Summary: The study prepared a group of ZrB2-SiC ceramics by hot-pressing and added Y2O3, tested their self-healing capabilities in high-temperature oxidizing environment, and evaluated the self-healing efficiency by measuring the strength recovery rates.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Nanoscience & Nanotechnology
Lun Feng, Frederic Monteverde, William G. Fahrenholtz, Gregory E. Hilmas
Summary: Six different high-entropy diboride ceramics with AlB2 structure showed varying levels of hardness under different loads, with two compositions demonstrating superhard characteristics.
SCRIPTA MATERIALIA
(2021)
Article
Engineering, Manufacturing
Pietro Galizia, Antonio Vinci, Luca Zoli, Frederic Monteverde, Jon Binner, Vinothini Venkatachalam, Miguel A. Lagos, Thomas Reimer, Neraj Jain, Diletta Sciti
Summary: In the frame of the Horizon 2020 European C3HARME research project, different processes were developed for the manufacture of ZrB2-based CMCs. The high temperature stability and microstructures of the materials were assessed to evaluate the influence of oxidation on the properties, with short fibre-reinforced composites showing the best performance.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Materials Science, Ceramics
Anna N. Dorner, Frederic Monteverde, William G. Fahrenholtz, Gregory E. Hilmas
Summary: In this study, a solid-state formation mechanism for core-shell microstructures in (Zr,Ta)B-2 ceramics and ZrB2-TaB2 diffusion couples is proposed, and it is demonstrated that core-shell microstructures can be developed through Ta diffusion along ZrB2 grain boundaries and lattice diffusion of Ta into ZrB2.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Ceramics
Frederic Monteverde, Federico Saraga, Mattia Gaboardi, Jasper Rikkert Plaisier
Summary: The recent discovery of high entropy transition metal diborides (HEBs) has generated new interest in ultrahigh temperature ceramics (UHTCs). Transition metal oxides based boro-carbo/thermal reduction (BCTR) syntheses show promise as relatively inexpensive production methods, but may have limitations in achieving pure HEBs. By selectively tuning the concentration of boron and carbon, researchers aim to achieve a full dense solid solution of (Ti,Ta,Nb,Zr,Hf)B2, with insights from high-resolution synchrotron X-ray powder diffraction and temperature dependent diffraction highlighting anisotropic thermal expansion and micro-cracking within this class of materials.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Frederic Monteverde, Federico Saraga, Mattia Gaboardi, Lun Feng, Gregory Hilmas, William Fahrenholtz
Summary: The study investigated the chemical homogeneity of high-entropy AlB2-type Ti-Zr-Hf-Ta-TM diboride and Ti-Zr-I if-Mo-W solid solutions, revealing strong correlations among densification rate, grain coarsening, and long-range chemical randomization. The incomplete homogenization of metals was found to have a direct impact on the refined lattice mu-strain, as supported by high-resolution synchrotron radiation X-ray diffraction and energy dispersive spectroscopy analyses.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Multidisciplinary
Mattia Gaboardi, Frederic Monteverde, Federico Saraga, Giuliana Aquilanti, Lun Feng, William Fahrenholtz, Gregory Hilmas
Summary: This study presents an extensive and systematic investigation of a class of emerging high-entropy ceramics using high-resolution synchrotron powder diffraction and extended X-ray absorption fine structure analysis. The results indicate a random distribution of atoms with local strain around the d-metals sites, and a linear trend between the average structure and the first-neighbour distances, regardless of the number and type of metals in the high-entropy ceramic.
Article
Engineering, Manufacturing
Frederic Monteverde, Mattia Gaboardi, Federico Saraga, Lun Feng, William Fahrenholtz, Gregory Hilmas
Summary: High-entropy (HE) ultra-high temperature ceramics, particularly HE diborides, have great potential for energy conversion and extreme environmental shielding due to their intrinsic anisotropic layered structure and ability to withstand ultra-high temperatures. In this study, we used high-resolution synchrotron diffraction to investigate the thermal lattice expansion in various multicomponent compositions. The results showed that the average thermal expansion and the ratio of in-plane to out-of-plane expansion could be controlled by the combination of metals used.
INTERNATIONAL JOURNAL OF EXTREME MANUFACTURING
(2023)
Review
Engineering, Manufacturing
Fei Wang, Frederic Monteverde, Bai Cui
Summary: The concept of multi-principal component has opened up opportunities for novel high-entropy ceramics in extreme environments. The unique physical properties of high-entropy carbides and borides, such as higher hardness and improved irradiation resistance, can be attributed to compositional complexity and lattice distortion. This review focuses on the synthesis and performance evaluation of high-entropy carbides and borides in extreme high-temperature, irradiation, and gaseous environments.
INTERNATIONAL JOURNAL OF EXTREME MANUFACTURING
(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)