Article
Chemistry, Physical
Sandeep Kanade, Manu Gautam, Anuradha Ambalkar, Yogesh Sethi, Musthafa Ottakam Thotiyl, Bharat B. Kale, Anil B. Gambhire
Summary: A facile synthesis of multilayered VC@rGO nanocomposite material has been demonstrated, which shows superior specific capacity, long-term cyclic stability, and rate performance when used as an anode in both lithium-ion and sodium-ion batteries.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Ji-Hye Koo, Seung-Min Paek
Summary: A Ge/GeO2/graphene composite material was synthesized to address the volume expansion issue of germanium/germanium oxide nanoparticles during charge/discharge cycles. The material showed superior cycling stability by trapping Ge/GeO2 nanoparticles between graphene nanosheets to offset the volume expansion effect. Transmission electron microscopy images confirmed the distribution of Ge/GeO2 nanoparticles on graphene nanosheets.
Article
Chemistry, Physical
Zehao Zhang, Xiang Liu, Youjun Lu, Haibo Li
Summary: This work proposes a facile covalent self-assemble strategy to prepare the ZrN@rGO composite for enhanced LIB. The results show that a strong Zr-C covalent bond is formed between ZrN and rGO, and electron transfer promotes charge density at the ZrN@rGO heterointerface. The volume change of ZrN can be effectively alleviated by coupling with rGO, leading to a high specific capacity in the lithium-ion battery.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Review
Chemistry, Multidisciplinary
Safina-E-Tahura Siddiqui, Md Arafat Rahman, Jin-Hyuk Kim, Sazzad Bin Sharif, Sourav Paul
Summary: Lithium-ion batteries (LIBs) are widely used in various applications, but carbon-based materials as anodes have some issues, leading to the search for alternatives. Transition metal oxides (TMOs) like NiO can be used as substitutes. This study reviews the electrochemical performance of binder-involved nanocomposites of NiO as LIB anodes and proposes future advances in NiO nanocomposites.
Article
Chemistry, Physical
Memona Idrees, Ahmed S. Haidyrah, Ata-ur-Rehman, Qin Zhang, Xuanke Li, Syed Mustansar Abbas
Summary: Fe2N decorated on reduced graphene oxide (rGO) prepared by a hydrothermal reaction showed promising lithium-ion battery performance, with higher capacity and lower capacity fading rate. The conductive graphene network facilitated charge transfer reactions, while mesoporous Fe2N aided in electrolyte penetration and intercalation/deintercalation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Huaiyang Chen, Xiaoping Shen, Zhenyuan Ji, Jia Cheng, Guangxiang Liu, Leiming Lang, Yao Chen
Summary: In this paper, porous Mn3O4-Fe3O4 nanoparticles are anchored on reduced graphene oxide (rGO) nanosheets to form Mn3O4-Fe3O4/rGO composites. The composites exhibit superior electrochemical lithium storage performances, including high reversible capacity, good rate capability, and strong long-term cycle stability. The study demonstrates that graphene not only provides conductivity, but also mitigates volume expansion and prevents nanoparticle aggregation.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Analytical
Jiarui Huang, Qingshan Dai, Chengjie Cui, Hiabo Ren, Xiaojing Lu, Yong Hong, Sang Woo Joo
Summary: A cake-like porous Fe3O4 coated with a carbon layer (Fe3O4@C nanocakes) has been prepared and used as an anode for lithium-ion batteries (LIBs). The Fe3O4@C nanocakes show superior electrochemical properties and rate behavior, making them a potential electrode for LIBs with high specific capacities.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Biochemistry & Molecular Biology
Jeong-Hun Jang, Minseop Lee, Ji-Hye Koo, Seung-Min Paek
Summary: In this study, Ge/RuO2 nanocomposites were successfully fabricated as anode materials for lithium-ion batteries. The well-dispersed Ge nanoparticles within the rutile-type RuO2 matrices enhanced the cycle stability and capacity retention of the anode material, resulting in higher discharge capacities and better capacity retention compared to Ge/GeO2 nanoparticles.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Physical
Caili Yang, Yixin Ran, Chenxi Gao, Zuyong Wang, Yuan-Li Ding
Summary: Li3VO4 is a promising intercalation anode material for lithium-ion batteries, but it has poor electronic conductivity. To address this issue, researchers developed a self-template strategy to construct 3D hierarchical Li3VO4/C hybrids, which show efficient electron/ion transport system.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Wenshuai Lang, Chuang Yue, Man Dang, Gang Wang, Yimin Chen, Fang Hu, Zhiming Liu, Jie Shu
Summary: Three-dimensional graphene networks were successfully fabricated on nickel foam using chemical vapor deposition technique, followed by the deposition of amorphous Ge layer using radio frequency magnetron sputtering method. The Ge-decorated graphene networks exhibited improved electrochemical performance as anodes for lithium-ion batteries compared to directly coated two-dimensional Ge nanoelectrodes on bare Ni foam. The optimized 3D Ge@Gr hybrid electrode achieved significantly enhanced electrochemical cyclability for 1500 long-term cycles under higher current density of 1.2 mA cm-2. The interconnected 3D graphene with enlarged surface area effectively buffered the volume change of the Ge anode and improved electrical/ionic conductivity, resulting in superb stable cyclability.
JOURNAL OF POWER SOURCES
(2023)
Article
Materials Science, Ceramics
Jingqi Chen, Zhenhua Bai, Xuetong Li, Qingliang Wang, Jinlong Du, Rihuan Lu, Xianghua Liu
Summary: A novel method for preparing reduced graphene oxide wrapped Mn3O4 nanoparticles as anodes for lithium-ion batteries is reported. The nanocomposite exhibits excellent cycling performance and rate performance, making it a promising candidate for advanced LIBs.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Jeong-Myeong Yoon, Young-Han Lee, Cheol-Min Park
Summary: This study investigates the use of two structural types of Ga as anodes for Li-ion batteries (LIBs) and develops an optimized Ga-based nanocomposite using a solid-state alloying-dealloying process. The nanocomposite effectively addresses the melting and agglomeration issues of Ga, improving the cycling stability and electrochemical performance of LIBs.
MATERIALS TODAY ENERGY
(2023)
Article
Chemistry, Physical
Rui Yu, Rongli Jiang, Zihan Zhou
Summary: To solve the problem of capacity attenuation in SiO2 during charge and discharge, a rGO@yolk-shell SiO2 structure was designed using reduced graphene oxide as the conductive network and loading carbon-coated SiO2 as the yolk-shell structure. The yolk-shell structure effectively mitigates volume change without damaging the carbon layer, and the combination of rGO and the carbon layer enables efficient electron transport. As an anode material for lithium-ion batteries, rGO@yolk-shell SiO2 exhibits stable cycling performance with a capacity of 616 mAh g-1 after 358 cycles at 0.1 A g-1. (c) 2022 Elsevier B.V. All rights reserved.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Zhaolin Li, Hailei Zhao, Xin Tao, Yaozong Yang, Jie Wang, Zhao Yang
Summary: In this study, a graphene-modified lithium silicate (LS) nanodots decorated SiOx-C material was prepared using a sol-gel approach and subsequent heat treatment. The material exhibited fast Li-ion and electron transport, enhancing the electrode reaction kinetics of SiOx. The highly-conductive network of graphene also mitigated the structural stress of SiOx, resulting in excellent structural durability. The electrode showed a reversible capacity of 400 mAh g-1 at 0.5 A g-1 for 200 cycles without obvious capacity degradation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Memona Idrees, Abid Inayat, Irfan Ullah, Karma Albalawi, Sami Ullah, Shahid Bashir, S. Wageh, Ali Haider, Ata-ur Rehman, Syed Mustansar Abbas, Qin Zhang, Xuanke Li
Summary: In this study, a hierarchically nanostructured lithium-ion storage anode material was developed by partial nitridation of Fe2O3 nanospheres anchored on reduced graphene oxide sheets. The incorporation of electron-rich N-moiety and the graphene network contribute to the superior cycling stability and rate performance of the material.
SURFACES AND INTERFACES
(2022)
Article
Chemistry, Physical
Guangyou Yang, Yong Tang, Tao Lin, Tianyan Zhong, Yaowei Fan, Yan Zhang, Lili Xing, Xinyu Xue, Yang Zhan
Summary: A new self-powered closed-loop brain-machine-interface system has been developed for real-time detection and rapid adjustment of blood glucose levels. This system is able to operate without external power and can be powered by body motion, facilitating immediate treatment of metabolic diseases.
Article
Thermodynamics
Cheng Xie, Qiang Xu, Weiye Chen, Tongpo Yu, Lixia Wei, Lili Xing, Zhandong Wang
Summary: This study investigates the low temperature oxidation of alkenes and identifies two different chain branching reaction networks initiated by alkenyl keto-hydroperoxide and hydroxyl keto-hydroperoxide.
COMBUSTION AND FLAME
(2022)
Article
Nanoscience & Nanotechnology
Lihong Hu, Tianyan Zhong, Zhihe Long, Shan Liang, Lili Xing, Xinyu Xue
Summary: An innovative self-powered sound-driven humidity sensor for wearable intelligent dehydration monitoring system has been proposed. The sensor utilizes the piezoelectric/triboelectric effect of ZnO nanoarrays/PTFE membrane to sense humidity. The device can convert sound energy into electrical output without any external power supply and actively monitor the humidity of exhaled breath.
Article
Instruments & Instrumentation
Yifeng Peng, Zhihe Long, Shan Liang, Tianyan Zhong, Meihua Chen, Lili Xing, Xinyu Xue
Summary: A potential intelligent multifunctional diaper with flexible sensors and data processing/transmitting units can monitor baby's urination, detect physiological parameters, and transmit information to parents' mobile terminal.
SMART MATERIALS AND STRUCTURES
(2023)
Article
Chemistry, Physical
Hongye Guan, Pingjin Zou, Rui Lin, Ling Xiao, Zengyi Fang, Junyang Chen, Tao Lin, Yuan Wang, Yifeng Peng, Tianyan Zhong, Biqin Zhang, Jinyi Lang, Yan Zhang, Lili Xing, Meihua Chen, Xinyu Xue
Summary: Researchers have developed a new implantable self-powered therapeutic pellet that provides wireless hybrid therapy for cancer treatment. The pellet utilizes ultrasound energy to power a light-emitting diode illuminant and control circuit, delivering therapeutic doses of light to tissues for photodynamic therapy alongside direct sonodynamic therapy. In vivo studies on mice have demonstrated its high efficiency in treating breast cancer, surpassing the individual effectiveness of either PDT or SDT. This research not only has significant implications for cancer treatment but also highlights the critical interplay between current clinical therapies and future precision therapies.
Article
Chemistry, Physical
Hongye Guan, Yong Tang, Zhihe Long, Rui Lin, Shan Liang, Fuqiang Zhu, Tianyan Zhong, Yaming Zhang, Yaowei Fan, Zhen Wang, Chuang Shi, Wanli Ma, Sheng Sun, Meihua Chen, Lili Xing, Yan Zhang, Xinyu Xue, Yang Zhan
Summary: Neural regulation that is remotely controlled by medical professionals or AI agents can provide rapid, precise, and personalized intervention while optimizing the allocation of medical resources. Researchers have developed a self-powered wireless brain probe that can be controlled by cellphone audio tones and AI video analysis. The probe consists of a biocompatible pedestal with stimulation electrodes, magnets, and a signal-intensifying resonator with a piezoelectric powered modulation circuit. It can be wirelessly powered and controlled by programmed audio tones transmitted from other cellphones. Combined with AI-enabled video monitoring, the probe has shown therapeutic effects in relieving seizure events in epileptic mice.
Article
Biology
Lili Xing, Shilin Liu, Libin Zhang, Hongsheng Yang, Lina Sun
Summary: The MITF gene in the sea cucumber Apostichopus japonicus regulates body color differentiation through expression differences and regulation of downstream genes. These findings provide a foundation for understanding the mechanisms underlying body color formation and gene regulation in sea cucumbers, and support sea cucumber breeding and industry development.
Article
Thermodynamics
Jinglan Wang, Dandan Xu, Xuezhi Gao, Qiang Xu, Zhandong Wang, Jiuzhong Yang, Lili Xing, Junyu Tao, Beibei Yan, Guanyi Chen, Zhanjun Cheng
Summary: This study investigates the oxidation characteristics of N-methyl pyrrole (NMP) through experiments and kinetic modeling. The experiments were conducted at various temperatures and equivalence ratios, and the species formed during NMP oxidation were measured using synchrotron vacuum ultraviolet photoionization mass spectrometry (SVUV-PIMS). A comprehensive kinetic model, based on previous models, was developed and successfully reproduced the experimental results. The study reveals the dominant role of hydrogen abstraction reactions on the methyl group and the formation of nitrogen-containing compounds such as pyridine and pyrrole during NMP oxidation.
COMBUSTION AND FLAME
(2023)
Article
Thermodynamics
Lili Xing, Yunrui He, Jinglan Wang, Liuchao Lian, Zhanjun Cheng, Xuetao Wang, Mengjie Liu
Summary: For the first time, the rate constants for H-initiated reactions of 2-furfuryl alcohol (2FFOH) were calculated using a high-level quantum chemical method combined with the Rice-Ramsperger-Kassel-Marcus (RRKM) theory/Master equation method. The study revealed the major product channels and the site-specific rate constants for each reaction channel. The updated kinetic model based on these new calculations showed improved predictions of 2FFOH decomposition and speciation profiles during 2FFOH pyrolysis.
COMBUSTION AND FLAME
(2023)
Article
Energy & Fuels
Lili Xing, Jintao Cui, Liuchao Lian, Jinglan Wang, Huanhuan Wang, Yunrui He, Shaowei Wang, Xuetao Wang, Liyou Xu, Zhanjun Cheng
Summary: In this study, the reactions between 2-furfuryl alcohol (2FFOH) and OH radical were investigated by quantum chemical calculations. The energy diagram and rate coefficients of the reactions were calculated at different temperatures and pressures. The results showed that H-abstraction from the side chain of 2FFOH occurred faster than from the ring below 2300 K. Additionally, there was a slightly positive pressure dependence of the total rate coefficients in the temperature range of 500-1000 K. The findings of this study could contribute to the understanding of the chemical reaction mechanism of furan-based fuels in the atmosphere and combustion.
Article
Engineering, Civil
Shengjiang Sun, Lili Xing, Peng Gui, Bo Li, Hangyu Li, Lei Zhao, Kuihua Mei
Summary: Steel-basalt fiber composite bars (SBFCBs) possess excellent properties such as strength, modulus, toughness, corrosion resistance, and cost-effectiveness. This study experimentally assessed the bond-slip performance of SBFCBs in concrete through pullout and beam bond tests. The various factors influencing bond performance were analyzed, and the bond mechanism between SBFCBs and concrete was discussed.
JOURNAL OF COMPOSITES FOR CONSTRUCTION
(2023)
Article
Chemistry, Physical
Rui Lin, Yaowei Fan, Yan Xie, Dengyun Ge, Shan Liang, Hongye Guan, Meihua Chen, Yan Zhang, Lili Xing, Xinyu Xue, Yang Zhan
Summary: A new self-powered wearable body-detecting/brain-stimulating system has been developed for monitoring and restraining epilepsy. The system can monitor body motion in real time, transmit stimulus signals to the brain, and significantly reduce the duration of epileptic seizures.
Article
Environmental Sciences
Fang Su, Shilin Liu, Lili Xing, Da Huo, Hongsheng Yang, Lina Sun
Summary: In this study, RNA sequencing was performed on six key stages of Apostichopus japonicus development, and a total of 32,353 genes were identified. WGCNA analysis revealed that genes in the blue, yellow, and darkslateblue modules were highly correlated with the gastrula, auricularia, and blastula stages, respectively. Further analysis showed that these genes were mainly associated with signal transduction, cellular immunity, and extracellular matrix functions. The results of this study provide a comprehensive understanding of the molecular characteristics of sea cucumber embryonic development and theoretical guidance for larva rearing in sea cucumber culture.
FRONTIERS IN MARINE SCIENCE
(2023)
Review
Chemistry, Multidisciplinary
Jungang Tang, Xuetao Wang, Haojie Li, Lili Xing, Mengjie Liu
Summary: The treatment of NOx has become an urgent issue due to its difficulty in degradation in air and its negative impact on public health. Among various technologies, selective catalytic reduction (SCR) using ammonia as the reducing agent is considered as the most effective and promising technique. However, the development of high-efficiency catalysts for SCR is severely limited due to the poisoning and deactivation effect by SO2 and H2O vapor. This review summarizes the recent advances in enhancing the catalytic activity and stability of manganese-based catalysts in low-temperature NH3-SCR, as well as discussing the challenges and potential solutions for designing a catalytic system with high resistance to SO2 and H2O.
Article
Fisheries
Lili Xing, Lingyu Wang, Femke Roos, Michelle Lee, Gregory A. Wray
Summary: Sea urchins are important mariculture species and model organisms in developmental biology. Cis-regulatory elements control development and physiology by regulating gene expression. Mutations affecting these sequences contribute to phenotypic diversity. Cis-regulatory targets offer new breeding potential for the future.
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)