Article
Chemistry, Multidisciplinary
Fan Zhang, Siyang Shang, Yaya Li, Bingbing Fan, Rui Zhang, Biao Zhao, Hongxia Lu, Chengliang Ma
Summary: This study presents a strategy for the controlled synthesis of MXene foams with tailored dielectric properties. The addition of reduced graphene oxide and NiO particles enables the tuning of the complex permittivity and permeability of the MXene-based composites. The resulting composites exhibit a minimal reflection loss at 7.5 GHz, highlighting their potential as lightweight and multifunctional microwave absorbers.
Article
Chemistry, Physical
Haopeng Cai, Chaochao Feng, Hongbo Xiao, Bo Cheng
Summary: A ternary composite containing reduced graphene oxide, flower-like Fe3O4, and PANI was synthesized to exhibit excellent microwave absorption performance. The addition of PANI anticorrosion coating did not significantly affect the final microwave absorption performance, and the rGO content had an impact on the microwave absorbing properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Pei Han, Chaoyang Wu, Jieyu Tai, Hao Zhang, Guizhe Zhao, Qihui Chen, Yaqing Liu
Summary: Ferrite Fe3O4 and graphene oxide (GO) were covalently bonded and reduced to fabricate microwave absorbing material (MAM) with high absorption performance. The Fe3O4-rGO hybrid nanocomposites showed excellent impedance matching characteristics and a minimum reflection loss (RLmin) of -47.46 dB at a thickness of 3.5 mm. XPS and FT-IR spectroscopy confirmed the formation of amide bonds between modified Fe3O4 and functional GO. SEM, EDS, TEM, and Raman spectroscopy were used to analyze the morphology and structure of the hybrid nanocomposites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Ailiang Chen, Guanwen Luo, Xintao Sun, Jinxi Qiao, Jiang Cao, Zuojuan Du, Bowen Li
Summary: In this study, Co3O4/reduced graphene oxide (rGO) composite materials were prepared using a simplified hydrothermal method, showing adjustable reflection loss and effective absorption bandwidth. By changing the thickness and compositional ratio, desired electromagnetic parameters and absorption effects can be achieved. The resulting composite material achieved breakthrough in microwave absorption properties, with the highest reflection loss and effective absorption bandwidth.
Article
Chemistry, Inorganic & Nuclear
Guoxin Ding, Chenfeng Sun, Meiyi Wang, Guojun Cheng, Jun Liu, Yuexiang Hu
Summary: The construction of multihollow lightweight wave absorbing materials is a future goal. In this study, CoFe-LDH was grown on RGO surfaces and composites with different morphologies and wave-absorbing properties were obtained. The composites exhibited excellent microwave absorption performance.
INORGANIC CHEMISTRY COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Congyi Qian, Xiaohui Liang, Mei Wu, Xingxin Zhang
Summary: By adjusting the ratio of Fe3O4 and rGO, a lightweight microwave-absorbing material with a strong electromagnetic-absorption capability of practical significance in the field of electromagnetic compatibility was obtained.
Article
Materials Science, Ceramics
Xin Liu, Xiaolong Lu, Huaijun Guan, Xiubo Liu, Yongguang Wang, Dong Zhao, Mingdi Wang
Summary: Fully utilizing interfacial polarization is an effective strategy in improving the absorbing performance of materials. In this study, flower-like ZnO modified by CuO nanoparticles/N-RGO composites were fabricated and showed considerable absorbing performance.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Ligang Cheng, Qingwei Wang, Juan Ding
Summary: In this study, a Co/CoO@RGO composite material with excellent electromagnetic absorption performance was synthesized, with an RLmin of -56.56 dB and an effective absorption bandwidth of 5.86 GHz. This is attributed to the synergistic effect of magnetic and dielectric materials, as well as various electromagnetic wave loss mechanisms inside the sample.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Materials Science, Ceramics
Jiayi Wang, Chunhao Wan, Qi Tang, Jian Xu, Nianxi Xu, Shansheng Yu, Xiaoyi Wang, Hongwei Tian
Summary: In this study, rGO/Al/CoFe2O4 composites with different amounts of CoFe2O4 were synthesized using a one-step hydrothermal method, and their electromagnetic properties and infrared emissivity were investigated. The results showed that the rGO/Al/CoFe2O4 composite with a CoFe2O4 content of 0.06 g exhibited a minimum reflection loss (RLmin) of -68.03 dB at 15.5 GHz with a thickness of 1.38 mm. The effective absorption bandwidth (EAB) and infrared emissivity were found to be 3.3 GHz and 0.63, respectively. Therefore, the designed rGO/Al/CoFe2O4 composites can be utilized in both wave absorption and low-infrared emissivity applications, providing an effective solution for designing bifunctional wave absorption materials.
CERAMICS INTERNATIONAL
(2023)
Article
Optics
Khai Shenn Lau, Zainuriah Hassan, Way Foong Lim, Hock Jin Quah
Summary: Cerium-doped yttrium aluminum garnet (YAG:Ce) nanoparticles were synthesized and optimized through mixed-fuel microwave solution combustion synthesis. The effects of vacuum annealing time and environment on the phosphor properties were investigated, revealing significant impacts on structural, morphological, compositional, and optical characteristics.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Engineering, Environmental
Jingjing Wang, Suhang Chen, Weimin Wang, Fengqi Zhao, Kangzhen Xu
Summary: Nanothermites with high energy release rate were prepared using a new method, and they demonstrated outstanding combustion and catalytic properties on several energetic materials.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Zijian Liao, Mingliang Ma, Yuxin Bi, Zhouyu Tong, Kwok L. Chung, Zijian Li, Yong Ma, Binglong Gao, Zhengkai Cao, Ranran Sun, Xiang Zhong
Summary: In this study, MgFe2O4/MgO/C fibers with MoS2 coating were successfully prepared, showing enhanced EM wave absorption performance. The optimal reflection loss and effective absorption bandwidth were -56.94 dB at 9.5 GHz and 3.9 GHz, respectively. The excellent MA performance was mainly attributed to the synergistic effect between MgFe2O4/MgO/C and MoS2.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Lianyang Chen, Qiong Deng, He He, Tian Ye, Yihang Li, Hanjun Wei, Chunlin Zhou, Feng Zhao, Qingyuan Wang
Summary: In this study, rGO/ScFeO3 composites were synthesized to improve the microwave absorption performance. The results showed that the addition of ScFeO3 particles significantly enhanced the absorption performance of the composites, and this improvement was attributed to the effective complementarity between ScFeO3 particles and carbon sheet. Furthermore, it was found that the microwave absorption properties of the composites were controlled by the ScFeO3 content.
MATERIALS CHARACTERIZATION
(2022)
Article
Chemistry, Physical
M. Derakhshani, E. Taheri-Nassaj, M. Jazirehpour, S. M. Masoudpanah
Summary: Hierarchical porous NiZn ferrite powders with tunable microstructure and properties were prepared using metal nitrates as oxidants and glycine as fuel. The addition of glycine affected the formation of FeNi3 phase and led to increased magnetization, permittivity, and permeability. The powders exhibited high microwave absorption performance with reflection loss of -48 dB in Ku band at a specific fuel to metal nitrates ratio.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Fanglan Fan, Zhichao Hu, Yuling Ye, Xiaonan Liu
Summary: Annular Fe3O4 magnetic particles were prepared by hydrothermal method, mixed with polyaniline (PANI) and graphene oxide in ethanol solution. The structure and composition of the composites were analyzed and the microwave absorption performance was evaluated. It was found that the Fe3O4/rGO@PANI composite showed excellent EM absorption capacity, making it a potential high-performance electromagnetic wave-absorbing material.
Article
Chemistry, Multidisciplinary
P. Heidari, S. M. Masoudpanah
Summary: Single-phase magnesium-calcium ferrite powders were prepared by solution combustion synthesis method. Addition of Ca2+ improved the magnetic properties and decreased particle size, but reduced the light absorption capability, resulting in a lower photodegradation rate.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
Article
Chemistry, Physical
A. H. Salehi, S. M. Masoudpanah, M. Hasheminiasari, A. Yaghtin, D. Safanama, C. K. Ong, S. Adams, Karim Zaghib, M. V. Reddy
Summary: Porous Na3V2(PO4)(3)/C composites were prepared in situ using a simple solution method, resulting in a high specific surface area and porosity. The composites demonstrated good electrochemical performance with high specific discharge capacity and high rate capability.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Multidisciplinary
S. M. R. Bavar, S. Alamolhoda, M. Sh Bafghi, S. M. Masoudpanah
Summary: By adjusting the amounts of thiourea and glycine, as well as the heating method (conventional or microwave), single-phase cobalt sulfides can be synthesized. Increasing the amount of thiourea resulted in larger particle sizes, while maximum photocatalytic degradation efficiency was achieved at pH = 9 for microwave combusted samples.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
Article
Materials Science, Ceramics
M. Karami, S. M. Masoudpanah, H. R. Rezaie
Summary: In this study, porous LiFePO4 powders were synthesized using a mixture of CTAB and citric acid as fuel, resulting in higher crystallinity and pore volume compared to CTAB-urea fuel. The CTAB-citric acid electrode exhibited higher discharge capacity and better kinetic performance.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
A. Tayebi Pak, S. M. Masoudpanah, M. Adeli, C. K. Ong
Summary: Fe3-xZnxO4 powders with different Zn2+ substitution were synthesized via a combustion method. The increase of Zn2+ content led to decreased particle size, increased pore amount, and different variations in saturation magnetization and reflection loss.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
M. Derakhshani, E. Taheri-Nassaj, M. Jazirehpour, S. M. Masoudpanah
Summary: Nickel-zinc ferrite ceramic foam was successfully fabricated as a low-density electromagnetic wave absorber, showing excellent absorption performance with 99% attenuation of electromagnetic waves and minimal reflection losses. The study utilized a variety of modern characterization techniques to analyze the structural, morphological, magnetic, and electromagnetic properties of the samples.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
M. Rahmati, S. M. Masoudpanah, S. Alamolhoda, J. Barqi
Summary: A facile combustion method was used to prepare FeNi3/NiFe2O4 composite powders, and the effects of fuel contents and combustion conditions on the properties were investigated. The results showed that the increase of fuel contents led to higher crystallinity and amount of FeNi3 phase, resulting in improved magnetic properties. The prepared powders exhibited excellent electrochemical performance and high specific capacitance.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
S. Zarei, M. Hasheminiasari, S. M. Masoudpanah, J. Javadpour
Summary: ZnO-xSnO(2) composite films were prepared by sol-gel spin coating process and characterized. The films showed distinct microstructure with ZnO pyramids on SnO2 nanoparticles. The ZnO-25 mol% SnO2 film exhibited higher photocatalytic degradation of methylene blue dye compared to pristine ZnO and SnO2 films.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Physical
F. Hosseini Mohammadabadi, S. M. Masoudpanah, S. Alamolhoda, H. R. Koohdar
Summary: (CoNiCuZn)(1-x)MnxFe(2)O(4) ferrite powders were prepared by the solution combustion method with different Mn contents for electromagnetic wave absorption. The effects of Mn contents on the structure, microstructure, and magnetic and microwave absorption properties were studied.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
O. Esmaeilzadeh, A. R. Eivani, M. Mehdizade, S. M. A. Boutorabi, S. M. Masoudpanah
Summary: In this study, WE43-based nanocomposites were fabricated by adding nano- and micro-sized particles and using friction stir processing. The effect of particle size and geometry of particle insertions on the microstructure and corrosion properties of Mg-based composites was investigated. The results showed that the grain size of the composite matrix was reduced after friction stir processing, and there was a significant fragmentation and redistribution of secondary phase particles. The corrosion behavior of the composite was evaluated using various tests, and it was found that the corrosion mechanism involved both pitting and uniform corrosion. Furthermore, friction stir processing and addition of particles reduced the rate of electrochemical corrosive reactions. The composite fabricated with hole insertion and nano-sized particles exhibited a more uniform distribution of additives and higher corrosion resistance compared to the groove insertion method. Additionally, the composite sample with Cu/ZnO particles showed the highest anti-corrosion properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
S. Golchinvafa, S. M. Masoudpanah, S. Alamolhoda
Summary: FeNi3/NiZnFe2O4/ZnO composite powders were in-situ prepared for microwave absorption. The effects of fuel content and composition on the structural, microstructural, and magnetic and microwave absorption properties were studied.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
S. M. Masoudpanah
Summary: Rod-like NiCo2O4 powders were synthesized using hydrothermal method and their structure and morphology were modified by adding PVP surfactant. The NiCo2O4 powders fabricated with PVP agent exhibited higher crystallinity and oxygen vacancies, resulting in improved microwave absorption performance. These findings are significant for the development of materials with efficient microwave absorption properties.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
S. M. Masoudpanah
Summary: Zinc and manganese spinel cobaltites were prepared by hydrothermal method using oxalic acid as precipitant. The structural, microstructural, and magnetic and microwave absorption properties were analyzed. The ZnCo2O4 nanoparticles were arranged as lamellar-like morphology, while the MnCo2O4 powders were composed of the large octahedral particles. The ZnCo2O4 powders showed higher magnetization and better microwave absorption performances.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
S. Khanahmadi, S. M. Masoudpanah
Summary: NiCo/(Ni,Co)O/(Ni,Co)Fe2O4 composites were prepared in-situ by solution combustion method. The presence of Ni(1-x)Co(x) phase instead of pure Ni and Co phases was confirmed by magnetic properties. The combusted composites exhibited spongy microstructure without any special morphology for various phases.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Ceramics
S. Golchinvafa, S. M. Masoudpanah, S. Alamolhoda
Summary: The magnetic (Ni1-xZnxFe2O4/FeNi3 (x = 0.5 and 0.7))/dielectric (ZnO) composites were designed and in-situ prepared as microwave absorbers. By varying the fuel contents and composition (x), the crystallized ZnO phase in the composites was adjusted from 0 to 54 wt % to tune the dielectric and magnetic properties. The composite with amorphous ZnO phase exhibited excellent microwave absorption performance, with a minimum reflection loss of -40 dB and effective absorption bandwidth of 3.4, 4, 3.8, and 1.8 GHz in Ku, X, C2, and C1 bands at specific matching thicknesses.
CERAMICS INTERNATIONAL
(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)
