Article
Nanoscience & Nanotechnology
Feipeng Yang, Jianying Wang, Tao Wen, Lei Zhang, Xixi Dong, Dong Qiu, Hailin Yang, Shouxun Ji
Summary: The AM aluminium alloy Al5Mg3Zn2Si developed in this work exhibits high strength, ductility, and excellent mechanical properties without the addition of costly alloying elements. With an optimized relative density and refined microstructure, it has great potential for automotive and aerospace applications.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Engineering, Manufacturing
Shuhan Li, Xinqiang Lan, Zemin Wang, Shuwen Mei
Summary: The study demonstrates that appropriate post-heat treatments can improve the mechanical properties of Ti-6.5Al-2Zr-Mo-V alloy processed by LPBF, especially ductility. By comparing samples obtained under different heat treatment conditions, the study investigated the effects of microstructure on mechanical properties.
ADDITIVE MANUFACTURING
(2021)
Article
Materials Science, Multidisciplinary
Feipeng Yang, Jianying Wang, Tao Wen, Xinhai Ai, Xixi Dong, Hailin Yang, Shouxun Ji
Summary: The traditional wrought Al-Mg-Si alloys fabricated via laser powder bed fusion (LPBF) are prone to hot cracks, unless adding grain refiners in as-LPBFed Al alloys. In this work, the Al-9.6 wt.% Mg-4.9 wt.% Si alloy with low solidification range and hot-cracking susceptibility was successfully processed by LPBF. The as-LPBFed alloys have reached a high relative density of 99.3% at the VED of 129.6 J/mm(3). The microstructures were featured by fine a-Al grains and cellular eutectic Mg2Si, accompanied by a high number density of dislocations, coherent GP zone and alpha-Al-12(Fe, Mn)(3) Si phases. The as-LPBFed Al-13.3Mg(2)Si alloy exhibited the high ultimate tensile strength of 557 MPa, yield strength of 439 MPa and elongation of 2.9%. In addition to the grain refinement and dislocation strengthening, the strength enhancement is mainly ascribed to the dispersion strengthening from the divorced nanosized eutectic Mg2Si. The results demonstrate that manipulation of alloys at near eutectic composition is effective to achieve high strength Al-Mg-Si alloys processed by LPBF.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Engineering, Manufacturing
Amir Hadadzadeh, Babak Shalchi Amirkhiz, Brian Langelier, Jian Li, Mohsen Mohammadi
Summary: The study investigates the microstructural consistency in a laser powder bed fusion (L-PBF) AlSi10Mg material, finding that repeated thermal cycles affect the characteristics of precipitates and the chemistry of the matrix, while not significantly impacting the grain and cell structures.
ADDITIVE MANUFACTURING
(2021)
Article
Chemistry, Physical
Abdulaziz Kurdi, Thamer Tabbakh, Animesh Kumar Basak
Summary: Additive manufacturing (AM) of stainless steel is challenging due to the oxidation of alloying elements during fabrication. In this study, stainless steel 316L specimens were produced using powder laser bed fusion (P-LBF) AM process. Electron microscopy and micro-/nano-indentation techniques were used to examine the microstructure and mechanical properties. The P-LBF-processed alloy exhibited slightly smaller grain size compared to the wrought counterpart. Despite the small size refinement, the L-PBF alloy showed significantly increased shear stress and hardness.
Article
Engineering, Manufacturing
Saket Thapliyal, Shivakant Shukla, Le Zhou, Holden Hyer, Priyanshi Agrawal, Priyanka Agrawal, Mageshwari Komarasamy, Yongho Sohn, Rajiv S. Mishra
Summary: This study demonstrates that integrating grain refinement through heterogeneous nucleation and eutectic solidification in the Al-Ni-Ti-Zr alloy can produce crack-free parts across a wide range of process parameters, microstructural heterogeneity, and hierarchy. This approach targets hot cracking at multiple stages of solidification in L-PBF, as opposed to traditional alloy design strategies that focus on specific stages of solidification. The Al-Ni-Ti-Zr alloy shows excellent printability and high tensile performance, with the potential for fine-tuning microstructure and performance.
ADDITIVE MANUFACTURING
(2021)
Article
Nanoscience & Nanotechnology
Yoji Miyajima, Yuta Nakamura, Yoichiro Konishi, Kazuhiro Ishikawa, Wenyuan Wang, Naoki Takata
Summary: The AlSi10Mg sample was additively manufactured using laser powder bed fusion (L-PBF) and then subjected to low-temperature annealing (LTA) at 413K or 473K. The hardness tests showed that annealing at 473K resulted in a peak hardness of around 160 HV, while annealing at 413K resulted in a peak hardness of around 145 HV. The flow stress of tensile and compression deformations were also affected by LTA, with the highest 0.2% proof stress achieved under peak aging conditions.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Nanoscience & Nanotechnology
Yuan Tian, Kanwal Chadha, Sang Hoon Kim, Clodualdo Aranas
Summary: The Heatvar alloy was specifically designed for the Laser Powder Bed Fusion (LPBF) process and can withstand prolonged exposure to heat in the tool and die industries. Microstructural evolution, mechanical properties, and texture development were studied after heat treatment. Different heat treatment temperatures were used to increase hardness, tensile strength, and yield strength through dissolution and precipitation of Fe2Mo.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Nanoscience & Nanotechnology
Shahriar Afkhami, Vahid Javaheri, Kalle Lipiainen, Mohsen Amraei, Edris Dabiri, Timo Bjork
Summary: This study investigates the fatigue performance of additively manufactured steel CX under uniaxial high cycle loading. The results show that surface quality is the most influential parameter that affects the fatigue behavior of the material, while heat treatment has little influence on the fatigue performance.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Rajiv S. Mishra, Saket Thapliyal
Summary: The unprecedented increase in component design space has led to significant focus on fusion-based additive manufacturing technologies. New design possibilities integrate features and functionalities not supported by conventional manufacturing, while overcoming the lack of diverse alloys through new alloy design approaches.
MATERIALS & DESIGN
(2021)
Article
Engineering, Manufacturing
Thomas Maulet, Jerome Gimenez, Florian Deme, Pierre Alcouffe, Ruben Vera, Claire Barres, Rene Fulchiron
Summary: This study investigated the crystallization kinetics of thermoplastic polymers in laser powder bed fusion (LPBF) technique and analyzed the microstructure of parts using various microscopy and diffraction experiments. The significant nucleating effect of sub-surface layers solidification during the LPBF process was found to be important in understanding the crystallization of polymers. The presence of nuclei was confirmed through microscopic and wide-angle X-ray diffraction (WAXD) techniques.
ADDITIVE MANUFACTURING
(2022)
Article
Materials Science, Multidisciplinary
Chen Zhang, Junkai Zhu, Chaoyue Ji, Yuzheng Guo, Rui Fang, Shuwen Mei, Sheng Liu
Summary: Through the use of high-entropy alloy as a strengthening phase, stainless-steel composites processed via laser powder bed fusion achieved simultaneous improvements in strength, ductility, and corrosion resistance. The high strength was achieved through high-entropy alloy nanoparticles and high-density dislocations, while the improved ductility was attributed to the semi-obstructive effect of the interface on dislocations.
MATERIALS & DESIGN
(2021)
Review
Engineering, Manufacturing
Umesh Kizhakkinan, Sankaranarayanan Seetharaman, Nagarajan Raghavan, David W. Rosen
Summary: This paper reviews the effects of laser powder bed fusion (PBF/L) process on the microstructure and mechanical properties of maraging steel 300 alloy, and discusses in detail the mechanical properties of as-built and heat-treated PBF/L parts.
JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING-TRANSACTIONS OF THE ASME
(2023)
Article
Materials Science, Multidisciplinary
Takahiro Kimura, Tomoatsu Ozaki, Takayuki Nakamoto, Takao Miki, Isao Murakami, Akiei Tanaka, Yoshiki Hashizume
Summary: A new heat-resistant alloy, Al-8mass%Mn-2mass%Cr, was produced using laser-based powder bed fusion. The alloy exhibited increased Vickers hardness and excellent high-temperature strengths after aging heat treatments at >=250 degrees C. The microstructure analysis revealed that the strong texture of coarse columnar crystal grains and the presence of precipitates at cell boundaries contributed to the strengthening effects in the alloy.
MATERIALS CHARACTERIZATION
(2023)
Review
Engineering, Manufacturing
H. R. Kotadia, G. Gibbons, A. Das, P. D. Howes
Summary: Additive manufacturing of metallic alloys has gained significant interest in the past two decades, particularly in aerospace and automotive applications. However, the development of AM with Al-alloys has been slow, with current research focusing on AlSiMg-based alloys and AlMgSc alloys, facing challenges and obstacles.
ADDITIVE MANUFACTURING
(2021)
Article
Engineering, Mechanical
Shi-tong Zhou, Zhao-dong Li, Lu Jiang, Xin Wang, Pian Xu, Yu-xi Ma, Yu-ping Yan, Cai-fu Yang, Qi-long Yong
Summary: Non-metallic inclusions are often considered detrimental to the toughness of steels, but this study found that refining oxide inclusions or increasing sulfur content can improve the toughness of pearlitic wheel steel. Oxide inclusions were found to indirectly induce crack initiation by enhancing local stress concentration, while sulfide inclusions were beneficial as they could break the continuous propagation of cleavage cracks and enhance plastic work of fracture.
ENGINEERING FAILURE ANALYSIS
(2022)
Article
Materials Science, Multidisciplinary
Raudhah Othman, Thomas Dorin, Nikki Stanford, Peter Hodgson
Summary: Three TWIP steels with different carbon concentrations based on the composition Fe-23Mn-3Si-3.3Al were studied using rapid solidification method. The driving force for solidification for this alloy showed similar preference for BCC and FCC solidification, within 10% of one another. Chemical analysis of the as-cast strip revealed inter-dendritic segregation of Si and Al, but negligible segregation of Mn. A simple heat treatment was effective in achieving chemical homogenization and producing fully austenitic microstructures.
MATERIALS SCIENCE AND TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Lu Jiang, Timothy Langan, Thomas Wood, Paul Sanders, Thomas Dorin
Summary: Pre-stretching in Al-Cu alloys leads to preferential formation of precipitates in certain habit planes and causes anisotropic mechanical properties. Adding Sc and Zr can eliminate this anisotropy. The presence of dispersoids promotes uniform nucleation of precipitates in all habit planes, resulting in improved isotropy for the alloy.
SCRIPTA MATERIALIA
(2022)
Article
Chemistry, Physical
Chang-Jun Wang, Chang Liu, Meng-Xing Zhang, Lu Jiang, Yu Liu, Zhen-Bao Liu, Jian-Xiong Liang
Summary: In this study, PH13-8Mo stainless steel parts with and without yttrium were manufactured using selective laser melting. The addition of yttrium clearly refined the grain size of the parts and improved their strength and toughness. This was mainly attributed to grain refinement, higher volume fraction of the retained austenite, and the formation of nano-sized precipitates containing yttrium.
Article
Chemistry, Physical
Lifeng Wang, Dan Liu, Lu Jiang, Yuxi Ma, Guoliang Yang, Yijun Qian, Weiwei Lei
Summary: This study developed a series of advanced 2D-2D transition metal dichalcogenides and nitrogen-rich nitrides heterostructures for solar water evaporation, which exhibited excellent photothermal performance.
Article
Nanoscience & Nanotechnology
Folarin Bakare, Lu Jiang, Timothy Langan, Matthias Weiss, Thomas Dorin
Summary: The 5xxx-series Al-Mg alloys exhibit plastic instabilities known as the Portevin Le Chatelier (PLC) effect, which limits their use in the automotive industry due to the formation of stress serrations and stretcher strain markings. This study investigates the impact of Al3(Sc,Zr) precipitates on PLC and surface quality. The presence of dispersoids reduces the severity of PLC, with the optimal size range being 6-7 nm.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Nanoscience & Nanotechnology
Lu Jiang, Katrin Mester, Robert Knott, Kathleen Wood, Anna Sokolova, Timothy Langan, Matthew Barnett, Thomas Dorin
Summary: This study investigates the impact of Sc and Zr on the precipitation kinetics in an Al-Cu-Li alloy without pre-stretching. In-situ Small-Angle X-ray Scattering (SAXS) and hardness measurements are used to analyze the precipitation kinetics. The presence of Al3(Sc, Zr) dispersoids accelerates the precipitation kinetics significantly. Surprisingly, TEM reveals the absence of T1 precipitates in the peak aged condition, and APT and DFT calculations suggest that the Al3Zr-shell acts as preferred heterogeneous nucleation sites for 0 ' precipitates.
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
Yi Yang, Veronique Massardier, Mahmoud Reza Ghandehari Ferdowsi, Lu Jiang, Jun Wang, Thomas Dorin, Sitarama R. Kada, Matthew R. Barnett, Michel Perez
Summary: This study provides new insights into the precipitation kinetics in Mg-Zn alloys. Through the characterization of the evolution of Zn solute, precipitate size, and volume fraction using various techniques, the experimental results are supported by a precipitation model based on classical nucleation and growth theories. The study reveals the prevalence of rod-shaped precipitates in the early aging stage and plate-shaped precipitates in the overaging stage.
Article
Engineering, Industrial
Matthias Weiss, Achuth Sreenivas, Hariharan Jeganathan, Lu Jiang, Peng Zhang, Brian Oxley, Buddhika Abeyrathna
Summary: There is a growing interest in roll forming high strength 7075 Aluminium alloys to reduce vehicle weight and maintain safety. This study investigates the fracture limits of 7075 Aluminium in roll forming and finds that the roll forming calibration method significantly affects the fracture limit. However, generalized material limits such as reduction in area and bend fracture limit cannot reliably represent the fracture limit of high strength 7075 Aluminium in roll forming.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Jubert Pasco, Yuan Tian, Kanwal Chadha, Lu Jiang, Thomas Dorin, Clodualdo Aranas Jr
Summary: The functional integration of maraging steel (MS1) with Co-30Cr-7Mo alloy (MP1) was achieved via multi-material additive manufacturing and heat treatment. The effects of solution and aging heat treatment on the interface characteristics and mechanical properties were investigated. Heat treatment improved the stability of the interface and did not compromise the strength and interface of the MS1-MP1 system.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Kanwal Chadha, Yuan Tian, Lu Jiang, Thomas Dorin, John Spray, Clodualdo Aranas
Summary: The microstructural properties and strengthening mechanisms of precipitation strengthening Corrax stainless steel manufactured by laser powder bed fusion were investigated. The research shows that aging heat treatment can trigger the formation of austenite laths between martensitic structures, resulting in the formation of Ni- and Al-rich spherical precipitates. The formation of these precipitates contributes to the excellent hardness and strength of Corrax.
MRS COMMUNICATIONS
(2022)
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)
