Article
Chemistry, Physical
Do-Hyun Kim, Hyeran Cho, Myeung-jin Lee, Hong-Dae Kim, Dong-Jin Lee, Gyu Tae Kim
Summary: This study reports a method to extract highly crystalline tiny In2O3 QDs from In2O3 powder that exceeds the size range of QDs. Through a series of filtration processes, the QDs were successfully obtained and exhibited significant absorption and photoluminescence in the ultraviolet region. Moreover, the addition of sodium dodecylbenzene sulfonate greatly enhanced the luminescent intensity of the QDs, paving the way for obtaining highly luminescent tiny QDs from other semiconducting powders.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Zhen Zhong, Xiuduan Gong, Shenghuang Lin, Jian Yuan
Summary: Despite numerous studies on organic semiconductors, fully probing their waveguiding properties remains a rare topic. By modifying the light transmission path, this work detected light propagation loss in Znq(2) samples and found the optical propagation loss coefficient of Znq(2) nanorods to be approximately 0.16 dB mu m(-1). Through 2D and 3D imaging, the waveguiding properties of 2D organic semiconductors were fully revealed, potentially providing new insights into novel optical properties of 2D organic semiconductors.
MATERIALS RESEARCH EXPRESS
(2021)
Article
Chemistry, Physical
Linda Abbassi, David Mesguich, Loic Coulomb, Geoffroy Chevallier, Romain Aries, Claude Estournes, Emmanuel Flahaut, Romain Viennois, Mickael Beaudhuin
Summary: In this paper, a simple route to synthesize nano-beta-FeSi2 material is reported. The impact of spark plasma sintering parameters on the material properties is studied. Experimental results show that high-density nano-beta-FeSi2 pellets can be obtained using this method in a short time.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Physics, Condensed Matter
Z. Haman, M. Kibbou, I Bouziani, Y. Benhouria, I Essaoudi, A. Ainane, R. Ahuja
Summary: This paper investigates the structural, electronic and optical properties of Janus MXO (M = Ti, Hf and Zr; X = S and Se) mono-layers using density functional theory calculations. The results show strong absorption coefficient and low reflectivity in the visible and ultraviolet regions, making them potential candidates for opto-electronic and photovoltaic applications.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Chemistry, Physical
M. S. Lomakin, O. V. Proskurina, A. A. Sergeev, I. V. Buryanenko, V. G. Semenov, S. S. Voznesenskiy, V. V. Gusarov
Summary: This study investigated the influence of hydrothermal synthesis conditions on nanocrystalline particles with a phase of variable composition. The BFWO phase structural parameters were found to be affected by the chemical composition, while the average crystallite size and aggregate size changed with different hydrothermal synthesis conditions. Furthermore, the Eg value was shown to decrease with an enrichment of BFWO composition in Bi and Fe, and a decrease in the volume fraction of crystallites in the surface layer of aggregates.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Inorganic & Nuclear
V. D. Zhuravlev, O. N. Leonidova, I. A. Leonidov, A. P. Tyutyunnik, A. Yu. Chufarov, T. A. Patrusheva, R. F. Samigullina
Summary: The polycrystalline samples of BaNi2(V1-xPxO4)2 (x = 0-1) were synthesized via a solution combustion synthesis. The substitution of vanadium (5+) cations by smaller phosphorus (5+) cations leads to compression of the [Ni2(V1-xPxO4)2]infinity layers in the ab plane and elongation of the BaO12 polyhedra along the c axis. The melting point of the samples increases with increasing phosphorus concentration. The electrical conductivity of BaNi2(V1-xPxO4)2 is measured and electron transfer is explained by the formation of Ni3+ along the Ni-O-Ni chains.
JOURNAL OF SOLID STATE CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Youngkyu Hwang, Anupam Sadhu, Sangho Shin, Shin Woei Leow, Ze Zhao, Jingyu Deng, Joshua A. Jackman, Munho Kim, Lydia H. Wong, Nam-Joon Cho
Summary: This study reports the fabrication of a flexible substrate made from pollen, which exhibits high transparency (>92%) and high haze (>84%), with optical properties that are tunable and arise from light-matter interactions with the spiky surface of pollen particles. The pollen substrate, readily obtained from nature and requiring minimal extraction or processing, can be incorporated into optoelectronic applications such as functional perovskite solar cells.
ADVANCED MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Xiangrong Chang, Kai Chen, Ying Zeng, Chunfeng Hu, Qingguo Feng
Summary: Ternary nitrides ZnGeN2 and CdGeN2 were investigated computationally under uniaxial compressions in [100] direction. The results showed that ZnGeN2 undergoes a phase transition from Pna21 to Pnma structure, while CdGeN2 transforms to a quasi-layered Pna21 structure with distorted in-plane hexagons. The band gap of both compounds first increases and then decreases with increasing compression, and transitions from direct to indirect under uniaxial compression. Additionally, the electron correlation becomes weaker as the compounds are compressed.
Article
Chemistry, Multidisciplinary
Hsin-Yi Liu, Jhao-Ying Wu
Summary: In this study, we used first-principles calculations to theoretically investigate the electronic properties of monolayer GaSe1-xTex alloys. Substituting Se with Te resulted in changes in the geometric structure, charge distribution, and bandgap. These changes were attributed to complex orbital hybridizations. This study highlights the strong dependence of energy bands, spatial charge density, and projected density of states (PDOS) on the concentration of substituted Te.
Article
Materials Science, Multidisciplinary
Glenn Packard, Carolyn Spaulding, Alex Taylor, Karl Hirschman, Scott Williams, Santosh Kurinec
Summary: Doping of thin amorphous silicon on glass substrate was achieved using Monolayer doping via Flash Lamp Annealing, resulting in the formation of n+ polycrystalline silicon in selective regions. The process successfully demonstrated the fabrication of N-channel field effect transistor devices.
Article
Materials Science, Multidisciplinary
Chunsheng Cui, Seyedmasoud Hashemi
Summary: This paper proposes a novel method based on deep neural networks to consider the uncertainties of influential parameters using Monte Carlo simulation. The method reduces the number of sampling by concentrating the sampling range into the state limit function of the power converter of interest. The proposed method is applied to a PV inverter and reduces the calculation time to 25% of the so-called method.
Article
Chemistry, Physical
Nehru Devabharathi, Rajasekar Parasuraman, Arun M. Umarji, Subho Dasgupta
Summary: High surface-to-volume ratio fully-printed chemiresistive-type ethanol gas sensors based on mesoporous tin oxide were fabricated using a soft templating method. The sensors exhibited highly selective sensitivity towards ethanol with short response and recovery times. The optimal pore size range contributed to the high surface area and volume of the sensors.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Natalia E. Boboriko, Yaraslau U. Dzichenka
Summary: The study utilized fast and simple molecular dynamics simulation to investigate the interaction between gas molecules and oxide surfaces, revealing that hydrogen molecules interacted most efficiently with the (001) anatase plane. The results suggest that molecular dynamics simulation can be a useful tool in understanding gas sensing properties of oxide materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
O. Y. Khyzhun, Tuan V. Vu, G. L. Myronchuk, M. Denysyuk, L. V. Piskach, A. O. Selezen, A. A. Lavrentyev, B. V. Gabrelian, A. O. Fedorchuk, V. A. Tkach, S. S. Petrovska, M. Piasecki
Summary: A nearly centimeter-size Tl2HgSnSe4 crystal was successfully derived by Bridgman-Stockbarger growth technique, and its electronic and optical properties were experimentally and theoretically investigated. The crystal showed very little hygroscopic behavior on its surface, which is important for practical applications. The experimental and theoretical results suggest that Tl2HgSnSe4 has potential applications in optoelectronics and solar photovoltaics.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Review
Chemistry, Multidisciplinary
Hyukjoon Yoo, I. Sak Lee, Sujin Jung, Sung Min Rho, Byung Ha Kang, Hyun Jae Kim
Summary: Research on metal oxide phototransistors is still in its early stages, with recent studies focusing on introducing absorption layers to improve the range of light wavelengths and the persistent photocurrent phenomenon. The materials used for the absorption layer are diverse, including oxides, chalcogenides, organic materials, perovskites, and nanodots.
ADVANCED MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Ying Na, Xiaohong Sun, Anran Fan, Shu Cai, Chunming Zheng
Summary: As lithium-ion batteries are widely used in deep-sea exploration, aerospace, and military equipment, there is a growing demand for their performance in low-temperature environments to enhance their cycling life and capacity. This review summarizes recent important progress and key methods for improving the capacity of electrode materials in low-temperature operations, with the aim of promoting the development of high-performance electrode materials.
CHINESE CHEMICAL LETTERS
(2021)
Article
Electrochemistry
Shuhui Wang, Jinze Guo, Ruisong Guo, Xiaohong Sun, Fuyun Li, Tingting Li, Xinqi Zhao, Yani Luo
Summary: CoS2 hollow nanospheres anchored on N-doped biological carbon nanofibers are designed as efficient sulfur hosts in lithium-sulfur batteries. The electrode exhibits superior reversible capacity and cycle life, effectively suppressing the shuttling effect of polysulfides.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Tianyi Hou, Anran Fan, Xiaohong Sun, Xi Zhang, Zhongkai Xu, Shu Cai, Chunming Zheng
Summary: This study reported Fe2O3 nanoparticle-pinning Bi-encapsulated carbon fiber composites prepared through electrospinning technique, which improved the cycling stability and reversible capacity of Bi in lithium-ion and sodium-ion batteries.
CHINESE CHEMICAL LETTERS
(2021)
Article
Electrochemistry
Yuan Liu, Shu Cai, Kaier Shen, Qianqian Li, Yao Xie, You Zuo, Xiaohong Sun
Summary: By synthesizing a hierarchical nanostructure consisting of ZnS hollow nanorods and uniform nanosheets via hydrothermal method, combining it with multi-component coordination effectively enhanced the sodium storage performance of ZnS-based anode material for sodium-ion batteries (SIBs).
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Tianyi Hou, Borui Liu, Xiaohong Sun, Anran Fan, Zhongkai Xu, Shu Cai, Chunming Zheng, Guihua Yu, Antonio Tricoli
Summary: Transition-metal sulfides (TMSs) combined with carbon nanotubes (CNTs) through a covalent coupling strategy show exceptional performance as anode materials, offering superior long-term stability and excellent rate capability for LIBs and SIBs applications.
Article
Materials Science, Ceramics
Jian Zhang, Kunzhou Xiong, Zhiqiang Sun, Yi Lv, Yingmin Zhao, Hao Zhang, Xiaohong Sun, Zhongkai Xu, Chunming Zheng
Summary: The elastic modulus of the fibers remains stable after high-temperature treatment, but the tensile strength gradually decreases as the temperature rises, especially significantly above 1200 degrees Celsius.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Multidisciplinary
Ying Na, Zhe Chen, Zhongkai Xu, Qi An, Xi Zhang, Xiaohong Sun, Shu Cai, Chunming Zheng
Summary: Filling LiTa2PO8 into poly(ethylene oxide)-based solid electrolyte improves the ionic conductivity, mechanical strength, and thermal stability of composite solid electrolytes (CPEs). The use of this filler enhances the rate performance and cycle performance of LiFePO4 solid-state lithium metal batteries, providing a potential avenue for developing advanced solid-state electrolytes.
CHINESE CHEMICAL LETTERS
(2022)
Article
Materials Science, Ceramics
Zhongkai Xu, Jian Zhang, Zhe Chen, Xiaohong Sun, Xuming Lv, Ruisong Guo, Fengdan Cui, Kunzhou Xiong, Zhiyou Gong, Zhuang Yuan, Chunming Zheng
Summary: The characteristics of the interface play a crucial role in determining the mechanical properties and fracture behavior of fiber-reinforced ceramic matrix composites. Developing coatings that can preserve fiber strength and maintain appropriate interfacial bonding strength is a challenging task. LaPO4 coating shows promise as a weak interface coating for oxide fiber reinforced oxide ceramic matrix composites, triggering toughening mechanisms such as fiber pulling out and debonding.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Multidisciplinary
Qi An, Xiaohong Sun, Ying Na, Shu Cai, Chunming Zheng
Summary: In this study, a graphene network loaded with cobalt metal nanoparticles was used to coat SiO 2 porous hollow spheres, forming SiO 2 @rGO-Co composite material. The composite material with porous structure and graphene network can shorten the lithium-ion diffusion distance, improve conductivity, and enhance the electrochemical activity of SiO 2 while reducing the volume expansion of the anode during cycling. Additionally, the nano-scale cobalt metal particles dispersed on graphene catalyze the conversion reaction of SiO 2 and activate the locked Li + in Li 2 O through a reversible reaction, thus increasing the charge and discharge capacity of the anode. The capacity of SiO 2 @rGO-Co reaches 370.4 mAh/g after 100 cycles, which is 6.19 times higher than that of pure SiO 2 (59.8 mAh/g) under the same conditions. Furthermore, the structure also exhibits excellent cycle stability with a volume expansion rate of only 13.0% after 100 cycles at a current density of 0.1 A/g.
CHINESE CHEMICAL LETTERS
(2023)
Article
Materials Science, Ceramics
Zhe Chen, Zhongkai Xu, Fengdan Cui, Jian Zhang, Xiaohong Sun, Yunpeng Shang, Ruisong Guo, Nan Liu, Shu Cai, Chunming Zheng
Summary: This study uses 3D printing technology and direct ink writing method to fabricate cordierite ceramics with complex structures. The near-net-shape fabrication is achieved by volume expansion caused by phase transformation, avoiding dimensional and alignment errors, and with a low coefficient of thermal expansion.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Ceramics
Nan Liu, Xiaohong Sun, Zhe Chen, Zhongkai Xu, Ning Dai, Guohua Shi, Shu Cai, Xuming Lv, Chunming Zheng
Summary: This study developed a simple formulation of alumina inks containing organic additives and sintering aids for the rapid and efficient preparation of dense alumina ceramics with complex structures.
CERAMICS INTERNATIONAL
(2022)
Article
Electrochemistry
Ning Dai, Guohua Shi, Tingting Li, Nan Liu, Zhongkai Xu, Zhe Chen, Xiaohong Sun, Jiefang Sun, Ruisong Guo, Chunming Zheng
Summary: In this study, a micro-regionally restricted hybrid nanocomposite was designed for the fabrication of dopamine electrochemical sensors. The sensor exhibited excellent performance, selectivity, and stability, indicating great potentials in electrochemical detection and biological sensing applications.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
You Zuo, Tengfei Meng, Hao Tian, Lei Ling, Huanlin Zhang, Hang Zhang, Xiaohong Sun, Shu Cai
Summary: In this study, a manganese phosphate nanolayer was synthesized on a MnO2 cathode, which could be transformed into a delta-MnO2 nanolayer interphase. This interphase with abundant interlayer water significantly enhanced H+ (de)insertion in the MnO2 cathode, leading to a kinetics conversion and improved rate and cycle performances.
Article
Materials Science, Ceramics
Guohua Shi, Xiaohong Sun, Ning Dai, Zhongyan Wang, Nan Liu, Zhongkai Xu, Zhe Chen, Shu Cai, Xuming Lv, Chunming Zheng, Jian Zhang, Yao Han, Bingqing Zhang
Summary: In this study, AlN/YAlO3 composites with different YAlO3 contents were prepared, and the impact of YAlO3 content on the mechanical properties and thermal shock resistance of the composites was investigated. Results showed that the addition of 3 wt% and 5 wt% YAlO3 improved the densification and the grain refinement of AlN, leading to improved flexural strength and fracture toughness of the composites. Moreover, the thermal shock resistance of the composites was significantly improved due to various strengthening mechanisms such as crack deflection, crack branching, and microcrack toughening.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Applied
Xinqi Zhao, Xiaohong Sun, Ruisong Guo, Song Wang, Fuyun Li, Tingting Li, Wen Zhang, Chunming Zheng, Lingyun An, Leichao Meng, Xudong Hu
Summary: A hierarchical functionalization strategy for sulfur species in lithium-sulfur batteries has been proposed to address issues of low sulfur utilization and uncontrollable dendritic growth. The strategy involves the use of a catalytic host cathode and a multifunctional interlayer to promote rapid catalytic conversion of sulfur species and enhance the anchoring, diffusion, and conversion of lithium polysulfides. The batteries equipped with this strategy exhibit high reversible capacity, superior cycling stability, and a favorable specific capacity, demonstrating potential for practical application.
JOURNAL OF ENERGY CHEMISTRY
(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)
