Article
Chemistry, Physical
Jun Ho Yu, Chang-Heum Jo, Hee Jae Kim, Seung-Taek Myung
Summary: Chalcogenide materials, particularly Bi2S3, have shown promising potential as anode materials for sodium-ion batteries due to their reasonable capacity and long-term cyclability. By intentionally limiting the reaction to the conversion process, the stability and performance of Bi2S3 have been improved, especially when paired with a Na-0.67[Ni0.1Fe0.1Mn0.8]O-2 cathode, showing a capacity retention of around 74% after 300 cycles.
ENERGY STORAGE MATERIALS
(2021)
Article
Chemistry, Physical
Jay Singh, Seulgi Lee, Priya Yadav, Sungjin Kim, Jaekook Kim, Alok Kumar Rai
Summary: In this study, a hydrothermal synthesis method was used to produce a mulberry-like mesoporous CoMoO4 anode material with improved electrochemical properties for lithium ion and sodium ion batteries. The unique morphology of the CoMoO4 material led to high reversible discharge capacity and long cycle stability, making it a promising alternative high-performance anode material for sodium ion battery applications.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Nagalakshmi Muralidharan, Kalaiselvi Nallathamby
Summary: CuCo₂S₄ nanoparticles prepared in-house are used as high energy and high power anode material for lithium and sodium ion batteries, with particle size below 50 nm addressing challenges of capacity fading and rate capability. The composite of CCS with multi-walled carbon nanotube (MWCNT) shows promising performance in LIBs and SIBs, delivering high specific capacity and good cycling stability.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
Article
Chemistry, Physical
Guorui Yang, Ziyi Zhou, Xiaofeng Liu, Yue Zhang, Silan Wang, Wei Yan, Shujiang Ding
Summary: The research indicates that hollow bowl-shaped porous carbon materials modified with graphene can act as high-performance anode materials for sodium-ion batteries, exhibiting high reversible capacity, excellent rate capability, and cycling stability. These materials possess good electrical conductivity and large surface area, which improve sodium ion adsorption and diffusion, leading to superior capacity and rate performance in sodium-ion batteries.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Junyang Hu, Huwei Wang, Shuwei Wang, Yu Lei, Lei Qin, Xiaojing Li, Dengyun Zhai, Baohua Li, Feiyu Kang
Summary: Research shows that the deposition mechanism of sodium and potassium in metal batteries differs from that of lithium, resulting in the formation of micrometer-scale granules, which may cause short circuits in the battery.
ENERGY STORAGE MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Tao Liu, Yu Yang, Xuejie Wang, Wenxue Yan, Jiaguo Yu, Liuyang Zhang
Summary: Graphene-based electrodes have great potential in sodium-ion batteries, but the large two-dimensional structure limits the ion diffusion and rate performance. In this study, a nanohybrid of FeCo2Se4 and holey graphene was successfully prepared, which provides high-density diffusion channels for sodium ions and achieves outstanding rate performance and cycling durability.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Review
Biochemistry & Molecular Biology
Suchong Tan, Han Yang, Zhen Zhang, Xiangyu Xu, Yuanyuan Xu, Jian Zhou, Xinchi Zhou, Zhengdao Pan, Xingyou Rao, Yudong Gu, Zhoulu Wang, Yutong Wu, Xiang Liu, Yi Zhang
Summary: Compared to lithium metal, sodium resources on Earth are more abundant and evenly distributed, making sodium-ion batteries a potential replacement for lithium-ion batteries in large-scale energy storage systems. Hard carbon, among various anode materials, shows advantages and commercial potential for sodium-ion batteries. This review analyzes the adsorption behavior and discharge process of sodium ions on hard carbon, discusses the controversial storage mechanism, and summarizes four storage mechanisms. The relationships between morphology and structure regulation, heteroatom doping, and electrolyte optimization are further explored, as well as the electrochemical performance of hard carbon anodes. Sodium-ion batteries with hard carbon anodes are expected to have excellent electrochemical performance and lower costs for large-scale energy storage.
Article
Nanoscience & Nanotechnology
Svenja Senkale, Giannantonio Cibin, Alan Chadwick, Wolfgang Bensch
Summary: Bulk isocubanite (CuFe2S3) was synthesized and investigated as an anode material for sodium-ion batteries, showing excellent electrochemical performance. The complex reaction mechanism involves the conversion of CuFe2S3 to various crystalline and nanocrystalline phases during Na uptake, with CuxS phases playing a key role in maintaining constant specific capacity.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Environmental
P. Arjunan, M. Kouthaman, K. Kannan, K. Diwakar, V. Priyanka, R. Subadevi, M. Sivakumar
Summary: This study investigates the use of powder from exhausted printer cartridges to prepare anode material for sodium ion batteries. The electrochemical performance of the composite material as an anode was examined, showing potential for reducing environmental impact and providing a solution for energy storage applications.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
Madhushri Bhar, Sourav Ghosh, Surendra K. Martha
Summary: In this study, a carbon fiber-based freestanding electrode architecture was proposed, which effectively reduced pulverization and conductivity issues by embedding Fe2O3 nanoparticles on the carbon fiber network. The freestanding electrode exhibited an enhanced initial capacity and improved cycling stability compared with the conventional Fe2O3 electrode. The carbon fiber network provided a conductive backbone for ionic and electronic transport, and the electrode showed good electrochemical stability during repeated sodiation/desodiation processes.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Ji Ma, Yuankun Li, Xiaojie Wei, Chunting Liu
Summary: Reduction roasting strategy was employed to transform hematite into powerful anode materials to store Li+, Na+, and K+ ions, constructing a porous structure to enhance ion accessibility. The newly-designed anodes were tested for storage capacity, cycling stability, and rate performances, while cyclic voltammetry curves and electrochemical impedance spectra were measured to unveil ion-storage mechanisms.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
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, Analytical
Wenchao Chen, Xin Liu, Jianghai Wu, Qing Wang, Yahui Zhang, Shengxue Yan, Pengqing Hou, Shaohua Luo
Summary: In this study, Fe1-xS particles were encapsulated in nitrogen-doped 1D carbon fiber material using an electrospinning/high-temperature vulcanization process. The resulting Fe1-xS@ nitrogen-doped carbon fibers (Fe1-xS@NCFs) demonstrated good cycling stability and rate capability as an anode material for sodium-ion batteries, maintaining a discharge capacity of 382 mAh g-1 after 100 cycles at 0.1 A g-1 and 330 mAh g-1 after 150 cycles at 1 A g-1.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Ying Wang, Ping Niu, Jianzhong Li, Shulan Wang, Li Li
Summary: Phosphorus composite anodes are considered promising candidates for sodium-ion batteries and potassium-ion batteries, but their practical use is limited by poor cycling stability and sluggish electrochemical reaction dynamics caused by volume variation and low electronic conductivity. Compositing with a suitable second component has been proposed as an effective strategy to potentially resolve these issues.
ENERGY STORAGE MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Yu Zhang, Li Fang, Wang Sun, Bin Shi, Xiaotao Chen, Yujie Gu, Kunpeng Ding, Zhenhua Wang, Kening Sun
Summary: In this study, a nanocomposite of Nb2O5 and rGO was successfully prepared and showed potential as an anode material in SIBs. The water-in-oil microemulsion and rGO network played important roles in improving the electrochemical performance of the nanocomposite material.
CHINESE CHEMICAL LETTERS
(2021)
Article
Chemistry, Physical
Jun Wang, Si-Dong Zhang, Si-Jie Guo, Si-Qi Lu, Yan-Song Xu, Jin-Yang Li, An -Min Cao, Li-Jun Wan
Summary: A surface coating strategy using manganese oxide nanoshell to protect the 4.5 V LCO cathode has been developed, resulting in improved stability and cycling performance.
Article
Chemistry, Physical
Lili Fan, Xiaofei Wei, Xuting Li, Zhanning Liu, Mengfei Li, Shuo Liu, Zixi Kang, Fangna Dai, Xiaoqing Lu, Daofeng Sun
Summary: This study reports a phosphorus-doped catalyst FeNPC with penta-coordinated single atom sites for efficient oxygen reduction reaction (ORR). The electronic distribution and adsorption strength of Fe-N-4 can be adjusted, reducing the reaction free energy of the potential-limiting step. Electrochemical tests show that FeNPC exhibits remarkable ORR activity and stability in alkaline, neutral, and acidic media.
Article
Plant Sciences
Xianming Zhou, Haiyan Zhang, Zhaoqi Xie, Ying Liu, Pengfei Wang, Lihong Dai, Xiaohui Zhang, Zhaoyang Wang, Zhuanrong Wang, Lili Wan, Guangsheng Yang, Dengfeng Hong
Summary: This study revealed the core function of BnaC2.MYB28 in regulating seed glucosinolate content in rapeseed and proposed a promising strategy for manipulating it.
Article
Mathematics, Applied
Lili Fan, Ruonan Liu, Hongjun Gao
Summary: This study examines a Hamiltonian model for the propagation of internal water waves interacting with surface waves, a current, and an uneven bottom. By using the Dirichlet-Neumann operators, the water wave system is expressed in Hamiltonian form, allowing for the determination of the motions of internal and surface waves. Through appropriate scaling of variables and the Hamiltonian perturbation theory, a KdV-type equation with variable coefficients dependent on bottom topography is derived to describe the internal waves.
PHYSICA D-NONLINEAR PHENOMENA
(2023)
Article
Chemistry, Physical
Yu-Qi Wang, Xiao-Han Dan, Zhen-Yu Yi, Xiang Wang, Ya-Chen Feng, Yue Feng, Dong Wang, Li-Jun Wan
Summary: This study investigates the O-2 adsorption and reduction on cobalt porphyrin (CoOEP) and phthalocyanine (CoPc) using in situ electrochemical scanning tunneling microscopy (ECSTM). Results show higher ORR activity of CoOEP compared to CoPc. Molecular-level imaging reveals that O-2 adsorbs mainly on Co-II sites and exhibits higher contrast in ECSTM images on CoOEP compared to CoPc. The dynamics of O-2 adsorption are quantitatively measured, with CoOEP exhibiting higher binding dynamics and lower Co-O dissociation barriers compared to CoPc.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Si-Qi Lu, Qinghua Zhang, Fanqi Meng, Ya-Ning Liu, Jianjun Mao, Sijie Guo, Mu-Yao Qi, Yan-Song Xu, Yan Qiao, Si-Dong Zhang, Kecheng Jiang, Lin Gu, Yang Xia, Shuguang Chen, GuanHua Chen, An-Min Cao, Li-Jun Wan
Summary: A method is presented to enhance the stability of nickel-rich layered oxides (NLOs) through surface solid reaction, improving cycling performance and reliability. La(OH)3 nanoshells are constructed to capture Li+ ions and react with the NLO surface lattices, transforming the particle crust into an epitaxial layer with localized Ni/Li disordering. This surface engineering results in improved capacity retention and excellent rate capability of NLOs for high-energy lithium-ion batteries.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Medicinal
Lili Fan, Xueying Zhang, Yihai Huang, Baobao Zhang, Wenjing Li, Qingru Shi, Yining Lin, Feihua Wu
Summary: In this study, it was found that Hom from Salvia plebeia R. Br. could protect vascular endothelial cells (VEC) from high glucose-induced injury by enhancing autophagy through the AMPK/mTORC1/TFEB pathway. These findings provide a potential therapeutic strategy for diabetic vascular complications.
PHYTOTHERAPY RESEARCH
(2023)
Article
Automation & Control Systems
Lili Fan, Dongpu Cao, Changxian Zeng, Bai Li, Yunjie Li, Fei-Yue Wang
Summary: In this research, a metaverse-enabled road maintenance system based on cyber-physical-social systems (CPSSs) is proposed, which fully utilizes the information of CPSS and the functions of road systems in the virtual world of the metaverse. An adaptive and information-preserving data augmentation (AIDA) algorithm-based crack detection algorithm is also proposed to enhance the detection performance of small targets in uncertain environments. The research can also be applied to the traffic metaverse by embedding a traffic flow prediction module in the algorithm. Experimental results show that the proposed algorithm outperforms other state-of-the-art algorithms in road damage detection tasks under different noise and weather conditions.
IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS
(2023)
Article
Food Science & Technology
Lili Fan, Junjing Hu, Ziwu Guo, Shuanglin Chen, Qijiang He
Summary: This study assessed nutritional and flavor differences in two components, shoot flesh and diaphragm, of two Phyllostachys species and analyzed any positional variation. The results showed that shoot flesh contained higher levels of protein, starch, fat, and vitamin C. On the other hand, the diaphragm had comparable levels of total acid, oxalic acid, and tannin in both species. Our findings suggest that bamboo shoot quality is affected by flavor compound differences, and interspecific and shoot components interact.
Article
Nanoscience & Nanotechnology
Mengfei Li, QianQian Yang, Lili Fan, Xiaojie Dai, Zixi Kang, Rongming Wang, Daofeng Sun
Summary: Researchers have developed alternative electrocatalysts with high stability for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). The electrocatalyst, composed of hollow CoOx nanoparticles embedded in carbon nanofibers, showed excellent long-term stability and promising performance in reversible Zn-air batteries. The remarkable electrocatalytic performance is attributed to the optimized adsorption of *OOH intermediate and reduced free energy of the potential-limiting step.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Xiang Wang, Zhen-Yu Yi, Yu-Qi Wang, Dong Wang, Li-Jun Wan
Summary: This study investigated the dynamic processes of methanol absorption and catalytic conversion on isolated single-atom Rh-N-4 sites using in situ electrochemical scanning tunneling microscopy. The results provided microscopic insights into the catalytic mechanism and reaction dynamics of methanol electrooxidation on Rh-N-4 sites, which is valuable for the rational design of high-performance catalysts.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Jianjian Yang, Zhihui Kong, Xinyu Li, Qinglei Guo, Zhen Wang, Zixi Kang, Rongming Wang, Daofeng Sun
Summary: The long-term stability of proton conductors is important for evaluating materials. This paper synthesized a sulfonated covalent organic framework with intrinsic proton conductivity, and further improved the proton conductivity by coating a superabsorbent polymer. The modified composite exhibited ultrahigh proton conductivity and long-term durability.
Article
Materials Science, Multidisciplinary
Qianqian Yang, Xinyu Li, Changsong Xie, Zhen Wang, Zhihui Kong, Jianjian Yang, Zixi Kang, Rongming Wang, Daofeng Sun
Summary: In this study, a sulfonate-containing hydrogen bonded organic framework (HOF) was synthesized and its stability was improved by crosslinking its crystal particles through an in situ reaction. The resulting HOF-based composite showed excellent stability in various solvents and strong acid/base solutions. Furthermore, the introduction of NH4+ ions significantly enhanced the proton conductivity of the material, making it a promising candidate for proton conducting applications.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Physical
Yu-Qi Wang, Xiao-Han Dan, Zhen-Yu Yi, Xiang Wang, Ya-Chen Feng, Yue Feng, Dong Wang, Li-Jun Wan
Summary: The in situ electrochemical scanning tunneling microscopy (ECSTM) study of O2 adsorption and reduction on cobalt porphyrin (CoOEP) and phthalocyanine (CoPc) is reported. CoOEP exhibits higher ORR activity than CoPc according to electrochemical measurements. Self-assembled CoOEP and CoPc monolayers on Au(111) substrates are observed at molecular resolution by ECSTM. O2 adsorbs on CoII sites and has high contrast in ECSTM images for both CoOEP-O2 and CoPc-O2 complexes. The surface coverage of CoOEP-O2 is approximately 1.4 times higher than that of CoPc-O2. The dynamics of O2 adsorption, quantitatively measured by potential step experiments, indicate higher dynamics and lower barriers for Co-O dissociation on CoOEP compared to CoPc.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Lili Fan, Xiaofei Wei, Xuting Li, Zhanning Liu, Mengfei Li, Shuo Liu, Zixi Kang, Fangna Dai, Xiaoqing Lu, Daofeng Sun
Summary: This study reports a phosphorus-doped Fe-N-C catalyst with penta-coordinated single atom sites for efficient oxygen reduction. The catalyst exhibits remarkable ORR activity and stability in alkaline, neutral, and acidic media.
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)