Article
Multidisciplinary Sciences
Liang Chang, Shaoqin Chen, Yuhuan Fei, Dario J. Stacchiola, Yun Hang Hu
Summary: This study achieves a high areal capacitance for supercapacitor electrodes through the synthesis of a new material, providing strategic insights for the rational design of these electrodes.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Chemistry, Physical
Xiaoyu Huang, Yuan Yang, Jialu Zhao, Yin Huang, Xiuhua Wang
Summary: In this study, a dual-core layer hollow structure Co3S4@NiCo2S4 nanocages supercapacitor electrode material was successfully synthesized using an appropriate ion-exchange strategy and subsequent vulcanization treatment of MOFs. The Co3S4@NiCo2S4 electrode exhibited a specific capacitance of 1202 F g-1 at 1 A g-1 and retained 80% of its initial capacity at 10 A g-1. The integrated Co3S4@NiCo2S4//AC asymmetric supercapacitor achieved an energy density of 58 Wh kg-1 at a power density of 750 W kg-1. It also showed a capacitance retention of 81.8% after 10,000 galvanostatic charge-discharge cycles. The individual nanostructure and excellent electrochemical properties of Co3S4@NiCo2S4 nanocages provide a rational strategy for developing high-energy-density supercapacitor electrode materials based on MOFs derivatives.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Jiwan Acharya, Bishweshwar Pant, Gunendra Prasad Ojha, Mira Park
Summary: In this study, a hierarchical hybrid core-shell electrode with impartial microstructural features and excellent electroactive constituents was fabricated. The electrode exhibited superb electronic conductivity, tailorability, effective nanoporous channels, and appropriate roadways for rapid ion/electron transfer, resulting in excellent electrochemical features. The electrode also demonstrated high energy density and prolonged cyclic durability, suggesting its potential applicability towards advanced hybrid supercapacitors.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Energy & Fuels
Shuai Wang, Cunhai Hu, Jiaheng Wang, Mingzhen Xie, Songyuan Wu, Linheng Zhao, Jiaxu Gong, Yatang Dai
Summary: Reasonable structural design is widely used to improve the performance of electrode materials. In this study, a coreshell structure with a unique appearance was designed, which showed high cycle stability and excellent capacity. DFT calculations revealed that the electronic structure at the heterogenous interface changed after compounding, leading to enhanced electron transfer and reaction rate.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Zhichao Yu, Nan Zhang, Gang Li, Lili Ma, Tingyu Li, Zhaomin Tong, Yan Li, Kaiying Wang
Summary: Morphological matching is significant in constructing core-shell nanostructure of supercapacitor electrode, which can improve the electrolyte penetration and storage, facilitate the charge transfer and diffusion. The hierarchical, vertically aligned funnel-shaped NiMoO4@Co3S4 core-shell nanostructure designed in this work exhibits remarkable specific capacitance and capacitance retention, demonstrating the enhanced supercapacitor performance achieved through morphological matching.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Nanoscience & Nanotechnology
Pratigya Sharma, Manickam Minakshi Sundaram, Teeraphat Watcharatharapong, Sirichok Jungthawan, Rajeev Ahuja
Summary: This study presents the tuning of interfacial region in core-shell nanocomposites with surface energy (de)stabilization, showcasing surface reconstruction in Zn-doped NiMoO4@AWO(4) structures. Experimental results demonstrate superior performance of the asymmetric device composed of Zn-doped NiMoO4 and CoWO4 in supercapacitors.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Chunli Guo, Ya'nan Meng, Deyang Yu, Liangyu Liu, Xudong Zhao, Xiaoyang Liu
Summary: Sandwich-type MnMoO4@NiMoO4@Mn2O3 core-shell nanosheet arrays (MMNM) were synthesized on nickel foams via a two-step controllable hydrothermal reaction. The MMNM series materials had a unique and abundant structure with broad application prospects. Among them, the MMNM-2 electrode exhibited the best electrochemical performance, and the battery-supercapacitor hybrid device (MMNM-2 // AC BSH device) achieved a high energy density and excellent cycling stability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Pingping Yao, Chenyang Li, Jiali Yu, Shuo Zhang, Meng Zhang, Huichao Liu, Muwei Ji, Guangtao Cong, Tao Zhang, Caizhen Zhu, Jian Xu
Summary: A novel flexible electrode with a unique core-shell holey nanostructure and improved conductivity demonstrates excellent energy storage performance, providing a large number of active sites and fast electron transport pathway. The electrode exhibits high specific areal capacitance at a current density of 2 mA cm(-2), outperforming most of the flexible electrodes reported recently. The assembled asymmetric supercapacitor shows high energy density and power density under a working voltage window of 1.7 V, with outstanding flexibility and cycling stability.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
Getachew Solomon, Anton Landstrom, Raffaello Mazzaro, Matteo Jugovac, Paolo Moras, Elti Cattaruzza, Vittorio Morandi, Isabella Concina, Alberto Vomiero
Summary: The study demonstrates the potential of a core-shell structure catalyst for optimizing the kinetics of the oxygen evolution reaction in water splitting, improving catalytic activity and conductivity. This research offers a more effective choice for practical applications of water splitting.
ADVANCED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Beirong Ye, Shuhao Xiao, Xianjun Cao, Junsong Chen, Aijun Zhou, Qiang Zhao, Wen Huang, Jinshu Wang
Summary: Interface engineering of core/shell structured NiTe@NiCoSe2 composite for supercapacitors enhances energy storage capability, with high-efficient synergistic effects among multicomponents and excellent stability with 96.6% capacitance retention after 10000 cycles.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Menghe Jiang, Zhicong Hu, Ying Wang, Cuili Xiang, Yongjin Zou, Fen Xu, Qi Yang, Jian Zhang, Lixian Sun
Summary: This study successfully grown flower cluster-like NiMoO4 nanorod arrays on nickel foam substrates and modified them with Co3S4 nanoparticles to create efficient hydrogen evolution reaction (HER) catalysts. The vertically aligned NiMoO4 nanorods as the core framework provide abundant specific surface area and fast charge transfer channels, suitable for HER in 1.0 M KOH solution.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Bingbing Zhang, Kaibing Xu, Qian Liu, Liangcai Wu, Chunrui Wang
Summary: In this study, NiMoO4@CoWO4 core-shell nanostructures were successfully synthesized using a hydrothermal process and annealing. The as-prepared nanocomposites were characterized using various techniques, and the results showed that NiMoO4@CoWO4 exhibited high specific capacity, good rate performance, and excellent electrochemical stability. This can be attributed to the unique core-shell architecture and the synergistic effect from the NiMoO4 nanorods and CoWO4.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Physical
Heming Zhao, Zepeng Zhang, Chungui Zhou, Huifang Zhang
Summary: A novel morphology-controllable approach was used to synthesize hierarchical core-shell NiCo2O4@NiMoO4 nanoarrays with enhanced electrochemical performance, showing potential for high performance core-shell electrodes for supercapacitors.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Chunli Guo, Yuyu Zhang, Minshuai Yin, Jianhui Shi, Weike Zhang, Xiaomin Wang, Yucheng Wu, Jianchao Ma, Du Yuan, Chuankun Jia
Summary: A novel Co3O4@Co3S4 core-shell neuroid network electrode has been designed, which offers excellent electrochemical performance while maintaining high cycle stability. The electrode is able to retain its structure effectively during cycling and has a high specific capacity.
JOURNAL OF POWER SOURCES
(2021)
Article
Environmental Sciences
Huijun Li, Pengyuan Wang, Enxi Jin, Wenbo Lan, Chi Han, Guowen Wang, Dezhi Huang, Xinxin Zhang, Hongchao Ma
Summary: Photoelectrocatalysis (PEC) oxidation is an efficient and eco-friendly advanced oxidation process for treating organic wastewater. The selection of superior photoelectrode materials is the critical factor affecting PEC efficiency. In this study, NiMoO4@Co3O4 hierarchical core-shell heterogeneous photoanodes were prepared and showed superior catalytic performance in the degradation of reactive brilliant blue KN-R.
Article
Materials Science, Multidisciplinary
J. Ma, C. Z. Wang, B. X. Huang, X. C. Zhao, C. Z. Chen, H. J. Yu
Summary: By incorporating magnesium and zinc into the Ca-Si-based system, Ca2MgSi2O7 and Ca2ZnSi2O7 were successfully prepared using sol-gel method in this study. The obtained ceramics showed macroporous structure, and the incorporation of zinc effectively reduced the specific surface area of the samples. The results suggest that the addition of magnesium and zinc can be an effective way to adjust the degradation and apatite formation of Ca-Si-based bioceramics to meet clinical demands.
MATERIALS TECHNOLOGY
(2021)
Article
Materials Science, Coatings & Films
Yang Chen, Jinhe Dou, Zengfen Pang, Zhiqiang Zheng, Huijun Yu, Chuanzhong Chen
Summary: The study demonstrates that constructing Ag-containing MAO coatings on Mg-3Zn-0.5Sr alloys can significantly improve the properties of magnesium alloys, with samples containing 2 g L-1 CH3COOAg showing the highest bonding strength, dense construction, excellent corrosion resistance, cytocompatibility, and antibacterial properties.
SURFACE ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Fei Weng, Cheng Hu, Runhao Zhang, Huijun Yu, Jiaqing Liu, Meng Wang, Yong Li, Lei Xie, Chuanzhong Chen, Kang Liang, Dongyuan Zhao, Biao Kong
Summary: The laser cladding coatings prepared on a titanium alloy substrate with a new precursor material system exhibit excellent wear resistance due to the presence of micron-size spherical graphitic phases and other reinforcement phases of high hardness. The formation mechanism of the graphitic phases involves in situ superassembly of uncombined C atoms and is closely related to the laser processing parameters and precursor compositions. These heterogeneous phases enable the obtained coatings to have high wear resistance and low friction coefficient, with a remarkable enhancement in wear resistance compared to the titanium alloy.
ACS CENTRAL SCIENCE
(2021)
Article
Chemistry, Physical
Jiajia Ye, Kai Xing, Qingshuai Zhang, Guang Xia, Xiaoxia Yang, Zhiqiang Zheng, Chuanzhong Chen, Cheng Hu
Summary: Se-doped CoP nanoparticles confined in 3D porous carbon frameworks demonstrate outstanding rate capability and long cycle life as K-ion battery anodes. Se-doping modifies the lattice of CoP, providing increased active sites and improved stability for high specific capacities. The 3D porous carbon frameworks offer pathways for fast electron and K-ion transport.
APPLIED SURFACE SCIENCE
(2021)
Article
Engineering, Industrial
Yiming Chi, Guanghao Gong, Longjie Zhao, Huijun Yu, Hongfang Tian, Xueyun Du, Chuanzhong Chen
Summary: In this study, in-situ TiB2-TiC reinforced Fe-Al composite coatings were fabricated by laser alloying with different Ti contents. The addition of 30 wt. % Ti significantly improved the wear resistance and hardness of the composite coatings, while increasing Ti content resulted in decreased supportability of the metal matrix to the reinforcements, leading to a slight reduction in hardness and wear resistance.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Anzhou Zhang, Zhanghua Fu, Guang Xia, Xuting Li, Zhiqiang Zheng, Jiajia Ye, Xiaoxia Yang, Qingshuai Zhang, Chuanzhong Chen, Cheng Hu
Summary: By modifying carbon nanotubes with Co3O4 nanoparticles as cathode materials for lithium-sulfur batteries, the shuttle effect can be effectively inhibited, improving the electrochemical performance. Balance between LiPS adsorption capability and electrical conductivity of the composite material is crucial for optimal performance.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Multidisciplinary
Xuting Li, Jiajia Ye, Zhanghua Fu, Guang Xia, Chuanzhong Chen, Cheng Hu
Summary: The use of a modified separator with a high Li+ transference number has a significant impact on the structure and electrochemical performance of Li metal anodes, enabling stable and dendrite-free plating/stripping cycles. Uniformly grown Li grains under the high t(+) environment exhibit well-defined textures.
Article
Materials Science, Multidisciplinary
Bing Liu, Chun-miao Du, Yong-zhen Zheng, Gui-yong Xiao, Chuan-zhong Chen, Yu-peng Lu
Summary: The addition of nano-scaled Si3N4 particles in the hopeite conversion coating on pure titanium can result in a finer and denser composite coating, which exhibits higher bonding strength and corrosion resistance.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Multidisciplinary
Han Gao, Meijie Yu, Xin Chen, Guiyong Xiao, Chuanzhong Chen, Bing Liu, Yupeng Lu
Summary: This study investigates the effect of ultrasonic on the IHT oxidation behavior of pure titanium. Submicro-/nano-scale morphological coatings with rutile and anatase TiO2 were prepared on the surface of titanium substrates subjected to ultrasonic-assisted IHT, resulting in significantly refined TiO2 crystals. Ultrasonic assisted IHT led to an improvement in hydrophilicity and hardness of the oxide film, offering a potential method to refine the nanoscale oxide films on titanium substrates and enhance their wear resistance and bioactivity.
Article
Chemistry, Physical
Fei Weng, Huijun Yu, Youxiang Chew, Guijun Bi, Xueyun Du, Hongfang Tian, Chuanzhong Chen
Summary: Micro-and nano-scale rare earth oxides (REOs) modified composites were fabricated by laser scanning the preplaced materials, showing that nano-scale REOs exhibited better performance in refining microstructure, improving micro-hardness, and wear resistance. The composite modified with 1 wt% nano-La2O3 showed the finest microstructure, with a 36.0% increase in micro-hardness and 38.5% improvement in wear resistance compared to the composite without REOs.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Polymer Science
Ning Jiang, Mengdi Li, Di Li, Yuankun Li, Ru Zhang, Hui Song, Xingfeng Liu, Wenqing Ge, Ning Li, Chaozhong Chen
Summary: This study focused on the water absorption behavior and durability of RT composites in the hygrothermal environment. The results showed that water diffusion of RT composites followed Fickian's law in the initial stage, with kinetic parameters of water absorption closely related to temperature changes. Moisture led to poor interface and degradation of RT composites, with natural rubber matrix swelling and developing stresses that could cause microcracks.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Materials Science, Coatings & Films
Jinhe Dou, Jing Wang, Huancai Li, Yupeng Lu, Huijun Yu, Chuanzhong Chen
Summary: Plasma electrolytic oxidation (PEO) is an effective surface treatment technique for enhancing the corrosion resistance of Mg alloy, but the micro-pores and micro-cracks of the PEO coating can limit its protection capability. In this study, a dense Ca3Al2(OH)(12) layer was fabricated on the PEO coating surface using hydrothermal treatment (HT) to create a PEO/HT composite coating, which showed improved bioactivity and corrosion resistance compared to PEO coating and Mg alloy. The growth process of the Ca3Al2(OH)(12) layer on the PEO coating surface was discussed.
SURFACE & COATINGS TECHNOLOGY
(2021)
Review
Materials Science, Multidisciplinary
Guanghao Gong, Jiajia Ye, Yiming Chi, Zhihuan Zhao, Zifan Wang, Guang Xia, Xueyun Du, Hongfang Tian, Huijun Yu, Chuanzhong Chen
Summary: Y Additive manufacturing, particularly laser additive manufacturing, is a novel manufacturing technique that forms layer-by-layer according to geometric model, offering advantages such as rapid prototyping, customization, and forming intricate structures. It is mainly used for metallic materials currently, with certain limitations and challenges, but the future development trends show promise.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Ceramics
Fei Weng, Huijun Yu, Xueyun Du, Hongfang Tian, Chuanzhong Chen
Summary: Laser-alloyed composite coatings with a TiB2/TiC complex structure were successfully fabricated on Ti-6Al-4V, exhibiting high micro-hardness and wear resistance. The formation mechanism involved simultaneous nucleation and growth of TiB2 and TiC.
CERAMICS INTERNATIONAL
(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)
