Article
Chemistry, Multidisciplinary
Qiyu Wang, Meng Zhu, Guorong Chen, Natalia Dudko, Yan Li, Hongjiang Liu, Liyi Shi, Gang Wu, Dengsong Zhang
Summary: A composite microsized Si anode is synthesized by constructing a unique polymer at a Si/C surface, which overcomes the challenges of poor electrical conductivity, serious volume expansion, and unstable solid electrolyte interface. The anode exhibits stable electrochemical performances and high capacity.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Physical
Fei Wang, Yuchen Wang, Zhendong Liu, Chengzhi Zhang, Linqing Li, Chong Ye, Jinshui Liu, Jun Tan
Summary: This study proposes a carbonization method to construct microsized-silicon as an anode for lithium-ion batteries. The carbonized organic binder serves as both a carbon resource and a physical framework, ensuring stable electric channel and the formation of a stable solid-electrolyte interphase. The carbon binder also acts as a physical buffer and modifies surface reactivity, enabling high initial Coulombic efficiency and stable cycle performance.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yi Han, Yun-Shan Jiang, Fu-Da Yu, Liang Deng, Wang Ke, Shu-Jian Zhang, Lan-Fang Que, Bin Wu, Fei Ding, Lei Zhao, Zhen-Bo Wang
Summary: This study focuses on addressing the poor cycling stability of Spinel LiNi0.5Mn1.5O4 (LNMO) cathode material by modulating two phases, layered phase and rock-salt-like phase, at the LNMO interface, resulting in a stable material structure and excellent charge transfer, leading to outstanding electrochemical performance.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Engineering, Chemical
Zhihua Xiao, Zhiqing Yu, Xinlong Ma, Chunming Xu
Summary: Nanostructured carbon materials are widely used as host materials for improving the performance of elemental sulfur in Li-S batteries. S, N-codoped carbon capsules (SNCCs) with microporous walls are used as the sulfur host material, providing high sulfur loading capacity, efficient suppression of shuttle effect, and exhibiting outstanding electrochemical performance.
ADVANCED POWDER TECHNOLOGY
(2021)
Review
Chemistry, Physical
Weizhe Liu, Zhiqiang Zheng, Yukun Zhang, Xinhong Zhao, Zhanghua Fu, Jiajia Ye, Xuting Li, Yongkang Li, Cheng Hu
Summary: The expansion of electric vehicles has led to an increase in lithium-ion battery (LIB) production, particularly those using the LiNixCoyMnzO2 cathode materials. The lifespan of LIBs is limited, resulting in a future wave of used cells with spent LiNixCoyMnzO2 cathode materials. The regeneration of these materials is crucial for sustainable development of the LIB industry. This review discusses the regeneration methods for spent LiNixCoyMnzO2 cathode materials, including degradation mechanisms, direct regeneration approaches using techniques like molten salt and hydrothermal treatment, and indirect regeneration processes such as acid and ammonia leaching.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Nan Zhang, Chuangchao Sun, Yiqiang Huang, Chunnan Zhu, Zunchun Wu, Ling Lv, Xiuquan Zhou, Xuancheng Wang, Xuezhang Xiao, Xiulin Fan, Lixin Chen
Summary: This study demonstrated that utilizing as-received Sn microparticles as anodes for Li-ion batteries can provide high capacity, efficiency, and retention. By exploring compatible electrolytes and forming compact SEI layers, the realization of alloying anodes represents a breakthrough for the commercialization of LIBs.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Chemistry, Physical
Yanan Liu, Zengyan Wei, Bo Zhong, Huatao Wang, Long Xia, Tao Zhang, Xiaoming Duan, Dechang Jia, Yu Zhou, Xiaoxiao Huang
Summary: In this study, single manganese atoms implanted in oxygen and nitrogen double-doped hollow carbon sphere frameworks were prepared as electrocatalyst and anchoring sites for lithium sulfur batteries. The results demonstrated the importance of single atom in accelerating polysulfides transformation and suppressing the shuttle effect in lithium sulfur batteries, leading to enhanced cycling stability. The abundant pores in conductive carbon frameworks facilitated electrolyte diffusion and promoted dynamic protection of the cathode structure during cycling.
ENERGY STORAGE MATERIALS
(2021)
Article
Materials Science, Ceramics
Qian Liu, Tong Ben, Long Chen, Libing Jing
Summary: In this research, grains of oriented W-type hexaferrite BaNi2GdxFe16-xO27 with high remanence ratio were successfully synthesized by substituting Gd3+. The material exhibited excellent magnetic properties suitable for designing self-biased circulators operating at the K band.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Physical
Lei Ma, Xiaomeng Fu, Fangfang Zhao, Liming Yu, Wenda Su, Liangming Wei, Gen Tang, Yue Wang, Fang Wu, Xiang Guo
Summary: This research presents a silicon/carbon composite anode for lithium-ion batteries, where silicon microparticles are coated with pyrolytic carbon. The composite anode exhibits excellent cycling and rate performance, attributed to the controlled volume change of the silicon microparticles and reduced internal impedance.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Hang Yang, Wanhai Zhou, Duo Chen, Jiahao Liu, Zeyu Yuan, Mengjie Lu, Laifa Shen, Valerii Shulga, Wei Han, Dongliang Chao
Summary: By studying manganese oxide, the origin of capacity fluctuation in Mn-based ZIBs was elucidated. New metrics and evaluation criteria were proposed, and the lifespan of batteries was shown to be extendable through acid treatment.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Chemistry, Analytical
Dipsikha Ganguly, V. S. Ajay Piriya, Sundara Ramaprabhu
Summary: A single-step synthesis of carbon-coated Sn microparticles has successfully controlled the volume expansion and achieved low capacity fading. The addition of FEC as an electrolyte additive improves the structural stability and results in high discharge capacity, rate capability, and cyclic stability for Sn/C anodes.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Agricultural Engineering
Maria del Carmen Rojas, Maria Luz Nieva Lobos, Maria Laura Para, Maria Eugenia Gonzalez Quijon, Osvaldo Camara, Daniel Barraco, Elizabeth Laura Moyano, Guillermina Leticia Luque
Summary: This article discusses the potential use of peanut shells as a carbon source for sulfur lithium batteries, studying the impact of different pre-treatment conditions on the physical characteristics of the resulting carbon materials and their performance as cathodes in lithium-sulfur batteries.
BIOMASS & BIOENERGY
(2021)
Article
Chemistry, Multidisciplinary
Guoqiang Liang, Jialiang Zhang, Hao Liu, Wei Xu, Cheng Yang, Yongqiang Chen, Chengyan Wang
Summary: A microwave sulfation roasting process is proposed to selectively recycle lithium from spent lithium-ion battery cathode material, with advantages of shorter operation time and higher extraction efficiency of Li. The conventional hydrometallurgical process in industry only achieves about 50% recovery rate of lithium from spent lithium-ion batteries, leading to significant waste of lithium resources.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Nanoscience & Nanotechnology
Shaoming Qiao, Qian Wang, Qiang Zhang, Chunhong Huang, Gaohong He, Fengxiang Zhang
Summary: In this study, a sulfur/nitrogen-codoped carbon-supported manganese single-atom catalyst was synthesized using a sacrificial template strategy. The catalyst exhibited high performance in Li-S batteries, with enhanced capacity and excellent cycling stability. The catalyst's advantages include the creation of abundant pores for exposing active sites and facilitating ion transport, as well as the formation of edge C-S-C bonds by sulfur atoms.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Xiaoshi Lang, Ruiyin Ren, Xinxi Wang, Lan Li, Kedi Cai
Summary: Cu2+ regulated Fe2O3 nanospheres were prepared as high-performance matrixes for sulfur composite cathodes of lithium-sulfur batteries via a facile hydrothermal method, effectively solving the issues of sulfur insulation, volume alternation, and shuttle effect.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Applied
Tinghui Wang, Zhaokun Ma, Qihang Zhu, Lijing Yang, Baosheng Liu, Yu Zhao, Cheng Xu, Bizhang Zheng, Fangqin Hu, Jianzhong Li, Qingfang Huang, Zhenlun Song
Summary: The effect of Al on the diffusion of Tb in the grain boundary diffusion process (GBDP) of Nd-Fe-B magnets was investigated by adjusting the magnetron sputtering process. Results showed that Al promoted the diffusion of Tb and reduced the thickness of the shell in the core-shell structure. This study is important for developing the process, reducing the consumption of heavy rare earth elements (Tb), and improving the coercivity of sintered Nd-Fe-B magnets.
JOURNAL OF RARE EARTHS
(2023)
Article
Psychology, Multidisciplinary
Zhixu Yang, Yixin Wang, Ziqiang Xin
Summary: This research develops and validates an individual-collective dilemma task (ICDT) to distinguish different rationality types. Based on the number of masks chosen, three rationality groups were identified: individual rationalists, social rationalists, and balancers.
CURRENT PSYCHOLOGY
(2023)
Article
Radiology, Nuclear Medicine & Medical Imaging
Hongri Zhang, Haixin Yang, Weike Duan, Xiaopan Li, Yixin Wang, Petrice M. Cogswell, Benjamin D. Elder
Summary: This study aimed to assess the influence of the area of the region of interest (ROI) on quantifying cerebrospinal fluid (CSF) stroke volume (SV) measured with phase-contrast cine magnetic resonance imaging (PC-MRI). The results showed that there was variation in the size of the aqueduct during the cardiac cycle, and the measured SV increased with a greater area of the ROI. Therefore, a variable ROI should be considered to establish reliable reference values for SV in future studies.
Article
Chemistry, Physical
Xudong Zhao, Xinxin Gao, Ya-Nan Zhang, Meihua Wang, Xinli Gao, Baosheng Liu
Summary: In this study, a novel metal-organic framework (MOF) containing dual sulfur sites was successfully constructed via an in-situ method. The newly synthesized DUT-67-SH exhibited high adsorption capacity and rapid adsorption kinetics for mercury ions (Hg2+), as well as excellent separation selectivity and regenerability under wide acidic pH range. The mechanism analysis indicated that the chemical bonding between sulfurs and Hg2+ was the main driving force. This work not only demonstrates the potential of DUT-67-SH as an adsorbent for Hg2+, but also provides new insights for introducing high-density sulfur sites in MOFs.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Hugang Cui, Xiaoyan Yan, Baosheng Liu, Xudong Zhao, Xiaohua Zhang, Xinxin Zhao, Xili Tong, Yunwei Wang, Yali Xing
Summary: In this work, a novel Ni-NiO-C@CNT composite is designed and fabricated, which combines a new metal organic framework-Ni-Benzimidazole (Ni-PhIm) derived Ni-NiO-C and high conductive carbon nanotube (CNT). The Ni-NiO-C is synthesized by carbonizing Ni-PhIm, with benzimidazole as the organic ligand. The carbon skeleton of Ni-NiO-C provides active sites for adsorbing and anchoring polysulfides, and the uniformly dispersed Ni and NiO ensure the integrity of the redox process. The interconnected CNT networks contribute to fast electron transfer, resulting in remarkable electrochemical performance of the Ni-NiO-C@CNT@S electrode.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Review
Metallurgy & Metallurgical Engineering
Bao-sheng Liu, Jia-li Li, Peng-fei Xu, Wen-jie Guo, Shao-hua Zhang, Yue-zhong Zhang
Summary: This article reviews the reason why low alloy steels are widely used in various fields, such as bridges, construction, chemical and equipment industries, due to their low cost and excellent mechanical strength. It also summarizes the preparation, advantages and disadvantages, applications, and research progress of various protective coatings suitable for low-alloy steel surfaces. Additionally, it discusses the characteristics of coatings drawn from the latest literature and suggests the simultaneous development of modified traditional metal coatings and new organic coatings, considering environmental protection, low cost, simplicity, and large-scale industrial application, to improve the understanding and overcome limitations in corrosion protection.
JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
(2023)
Article
Engineering, Environmental
Xudong Zhao, Chengwei Zhang, Baosheng Liu, Huifang Zhao, Xinli Gao, Yuanyang Wang, Yuezhong Zhang, Dahuan Liu, Chong-Chen Wang
Summary: Conversion of wastewater to MOFs provides a feasible method for reducing MOFs cost and effectively reusing industrial wastewater. The obtained products exhibit excellent performance and adsorption capacity.
RESOURCES CONSERVATION AND RECYCLING
(2023)
Article
Chemistry, Physical
Mingli Zhang, Ran Pan, Baosheng Liu, Kaixuan Gu, Zeju Weng, Chen Cui, Junjie Wang
Summary: The effects of cryogenic treatment on the microstructure evolution and mechanical properties of 15%SiCp/2009 aluminum matrix composites were systematically investigated. Cryogenic treatment promoted the precipitation of the theta '' phase and accelerated the aging kinetics. The increase in dispersive precipitates after cryogenic treatment improved the hardness and yield strength of the composites.
Article
Automation & Control Systems
Chenjia Bai, Lingxiao Wang, Yixin Wang, Zhaoran Wang, Rui Zhao, Chenyao Bai, Peng Liu
Summary: Multigoal reinforcement learning improves the agent's reward frequency with the hindsight experience replay (HER) algorithm. However, using hindsight goals introduces biases in the learning objective of multigoal RL. To address this issue, we propose a bias-corrected algorithm called BHER, which outperforms other state-of-the-art multigoal RL approaches in challenging robotics tasks.
IEEE TRANSACTIONS ON CYBERNETICS
(2023)
Article
Chemistry, Physical
Zhen Yang, Minxia Jiang, Chang Cui, Yixin Wang, Jinwen Qin, Jie Wang, Yingxinjie Wang, Baoguang Mao, Minhua Cao
Summary: In this study, we propose an in-situ cross-linking strategy driven by an electrolyte additive of SiCl4 to address the instability of LEDC in the SEI of LIBs. The results show that the SiCl4 additive can react with LEDC to form a stable Si-linked LEDC organic species, which improves its flexibility, and LiCl formed after dehalogenation of SiCl4 has a low Li+ diffusion barrier, enhancing ion transport in the SEI layer. This work provides new insight into the design of stable and robust electrode/electrolyte interface of LIBs.
Article
Public, Environmental & Occupational Health
Stephen M. Leach, Fiona M. Hollands, Eva Stone, Robert Shand, Laura Head, Yixin Wang, Bo Yan, Dena Dossett, Florence Chang, Yuan Chang Ginsberg, Yilin Pan
Summary: This study evaluated the cost-effectiveness of an LPN-based school nursing program and found that despite significant additional costs, the presence of a full-time LPN had little to no impact on improving attendance and reducing chronic absenteeism. The study recommends a careful review of the theory of change for LPN-based school nursing programs and the development of explicit assignment, training, monitoring, and auditing plans to align LPNs' activities with the intended outcomes.
PREVENTION SCIENCE
(2023)
Review
Engineering, Biomedical
Yixin Wang, Quanyin Hu
Summary: Cell therapy has great potential in treating malignant diseases, including cancer and infectious diseases. The integration of chemistry, engineering, and material sciences provides opportunities to enhance their therapeutic potential by modifying cells with functional motifs. Selecting appropriate cell decoration methods is crucial to achieve desired modifications while preserving the properties and biofunctions of cells. Bio-orthogonal chemistry, particularly cycloaddition reactions, allows the covalent modification of cells without affecting their biofunctions. This review summarizes the latest progress in bio-orthogonal chemistry-based strategies for cell engineering, with a focus on cycloaddition reactions, discussing their applications in disease diagnosis and therapy and the future prospects of this cell engineering technique.
ADVANCED NANOBIOMED RESEARCH
(2023)
Article
Electrochemistry
Le -Hong Xing, Fan-Xu Meng, Yun-Gui Hao, Xin-Ting Shi, Yi-Xin Wang
Summary: High performance Ni/C-SnO2 composite electrodes were successfully prepared for hydrogen evolution reaction (HER) in alkaline media. The addition of C-SnO2 particles improved the catalytic activity and stability of the composite coatings. The abundant OHads on C-SnO2 surface and the carbon in C-SnO2 contributed to the enhanced hydrogen evolution performance.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Shaohua Zhang, Tiantian Bian, Liming Mou, Xiaoyan Yan, Jinling Zhang, Yuezhong Zhang, Baosheng Liu
Summary: In this work, low-Cr steels with enhanced corrosion resistance by employing Ni and Mo alloying were self-designed to provide an alternative option compared to a common 3Cr steel in CO2 environments. The corrosion resistance mechanism was investigated by comprehensively evaluating corrosion behavior of three low-Cr steels exposed to CO2-saturated NaCl solutions over time periods of 6-168 h at 90 and 180 degrees C, involving electrochemical and immersion tests. The results indicate that the addition of Ni and Mo decreases general corrosion rates only in the early stages of corrosion, and FeCO3 crystals instead of inner Cr-enrichment films play a decisive role in retarding long-term general corrosion rates. On the other hand, localized corrosion behavior of low-Cr steels is obviously retarded by employing Ni and Mo alloying, in which non-reactive nickel occupies a large amount of vacancies and restricts the diffusion of corrosive species. In addition, Mo accelerates the enrichment of Cr during early stages of immersion and facilitates rapid re-passivation once films are broken, reducing the risks of perforation failure of pipelines.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Review
Chemistry, Analytical
Mingfei Pan, Huilin Li, Jingying Yang, Yixin Wang, Yueyao Wang, Xintong Han, Shuo Wang
Summary: Ensuring food safety is a major global challenge and requires the development of fast, sensitive, portable, and efficient food safety detection strategies. Metal organic frameworks (MOFs) have attracted attention as high-performance sensors for food safety detection due to their advantageous properties. Immunoassay strategies based on antigen-antibody specific binding are important for accurate and rapid detection of trace contaminants in food. This article summarizes the synthesis strategies and applications of MOFs and MOF-based composites in the immunoassays of food contaminants, providing insights into advanced strategies for developing immunoassays.
ANALYTICA CHIMICA ACTA
(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)
