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Regulation of solvation structure and the cooperation environment of potassium bonds for wider-temperature adaptive potassium storage

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Rare Metals 2024年第4期43卷 1610-1621页

作者： Bing-Bing Liu Yi-Hui Liu You-Bin Zhang Zhen-Guo Qi Guo-Hui Qin State Key Laboratory Base for Eco-Chemical Engineering College of Chemical EngineeringQingdao University of Science and TechnologyQingdao266042China Shandong Synergetic Innovation Center of Ecological and Chemical Engineering Qingdao266042China

Antimony selenide(Sb_(2)Se_(3))is one of the perspective candidates for potassium-ion batteries due to its advanced virtues stem including featured high capacity,fertile reserves and the relative narrow band *** the unique advantages,it is still plagued by the unstable interface compatibility and poor wider-temperature *** optimization of microstructure and the construction of inorganic-organic hybrids with a low desolvation barrier and rapid kinetics behaviors are efficient to address these *** Sb_(2)Se_(3)nanorods enclosed by the S-doped carbon layer(SC),further crosslinked by the poly(N-isopropylacrylamide)(PM)film(PM@Sb_(2)Se_(3)@SC),were artificially fabricated,and it displays the enrichment ion aggregated model as well as contacted ion pair state,the well-tailored cooperation environment of potassium bonds,assuring a homogeneous potassium deposition and an excellent widertemperature *** complicated experimental studies and theoretical calculations authenticate the synergistic effects of geometric conformation and compositional design for the tremendously enhanced potassium ***,the full device over PM@Sb_(2)Se_(3)@SC anode and the potassium Prussian blue cathode manifests impressively durable cycling life and wider-temperature adaptability,verifying the glorious contribution from the finely manipulation in solvation structure and potassium bonds to enhancing the potassium storage behaviors.

关键词： Anode Sb_(2)Se_(3) rods Interface compatibility Inorganic-organic electrode Potassium ion battery

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Formation of atomically dispersed zirconium through the utilization of nanoconfined environments

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Frontiers of Chemical science and engineering 2025年第3期19卷 99-106页

作者： Xuan-Yi Liu Yang Wang Le-Ping Gao Kai Zhang Yang Liu Xiang-Bin Shao Song-Song Peng Jiahui Kou Lin-Bing Sun State Key Laboratory of Materials-Oriented Chemical Engineering Nanjing 211816China College of Chemical Engineering Nanjing Tech UniversityNanjing 211816China College of Materials Science and Engineering Nanjing Tech UniversityNanjing 211816China

Single-atom catalysts are highly effective in catalyzing a wide range of reactions owing to their capacity to have precise coordination patterns and fully leverage the potential of metal *** several techniques have been reported for the preparation of single-atom catalysts,adopting a convenient method to construct them still has a *** this work,we report a convenient method for the preparation of Zr-based single-atom catalyst that takes advantage of the nanoconfined environments between the template and silica wall in template-occupied silica *** introducing Zr-containing precursor into the nanoconfined environments of the templateoccupied silica SBA-15 using solid-phase milling,Zrbased single-atom catalysts were produced via the following calcination *** functional theory calculations and experimental findings show that Zr atoms form Zr-O-Si structure in the silica *** Zr single-atom catalyst synthesized using the nanoconfined environments exhibited notably superior catalytic performance in the synthesis of benzyl acetate from the esterification reaction between acetic acid and benzyl alcohol(63.3%yield),outperforming the counterpart that synthesized without such nanoconfined environments(19.8%yield).

关键词： single-atom catalysts zirconium nanoconfined environments esterification

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Insight into structure evolution of carbon nitrides and its energy conversion as luminescence

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Carbon Energy 2024年第2期6卷 37-60页

作者： Hao Zhang Jingwei Zhang Wenjie Chen Minjia Tao Xianguang Meng Yuanjian Zhang Guifu Zuo Hebei Provincial Key Laboratory of Inorganic Nonmetallic Materials College of Materials Science and EngineeringNorth China University of Science and TechnologyTangshanHebeiChina College of Clinical Medicine North China University of Science and TechnologyTangshanHebeiChina Hebei Iron and Steel Laboratory TangshanHebeiChina Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device Jiangsu Province Hi-Tech Key Laboratory for Bio-Medical ResearchState Key Laboratory of BioelectronicsSchool of Chemistry and Chemical EngineeringMedical SchoolSoutheast UniversityNanjingJiangsuChina

A series of carbon nitride(CN)materials represented by graphitic carbon nitride(g-C_(3)N_(4))have been widely used in bioimaging,biosensing,and other fields in recent years due to their nontoxicity,low cost,and high luminescent quantum *** is more attractive is that the luminescent properties such as wavelength and intensity can be regulated by controlling the structure at the molecular ***,it is time to summarize the related research on CN structural evolution and make a prospect on future *** this review,we first summarize the research history and multiple structural evolution of ***,the progress of improving the luminescence performance of CN through structural evolution was ***,the relationship between CN structure evolution and energy conversion in the forms of photoluminescence,chemiluminescence,and electrochemiluminescence was ***,key challenges and opportunities such as nanoscale dispersion strategy,luminous efficiency improving methods,standardization evaluation,and macroscopic preparation of CN are highlighted.

关键词： carbon nitride chemiluminescence electrochemiluminescence energy conversion photoluminescence structural evolution

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Frequency-Voltage Active Support Strategy for Hybrid Wind Farms Based on Grid-Following and Grid-Forming Hierarchical Subgroup Control

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CSEE Journal of Power and Energy Systems 2025年第1期11卷 65-77页

作者： Haiyu Zhao Qihang Zong Hongyu Zhou Wei Yao Kangyi Sun Yuqing Zhou Jinyu Wen State Key Laboratory of Advanced Electromagnetic Technology School of Electrical and Electronics EngineeringHuazhong University of Science and TechnologyWuhan430074China

The GFL-GFM hybrid wind farm (HWF) combines the voltage source control advantages of grid-forming (GFM) wind turbines (WTs) with the current source control advantages of grid-following (GFL) wind turbines. It becomes a new type of large-scale grid-connected wind power generation. In this paper, we propose an HWF frequency-voltage active support based on GFL and GFM hierarchical subgroup control. It aims to realize the support of active power and reactive power under the premise of ensuring system stability. The strategy consists of the determination of the control objectives of the GFM-GFL subgroups, the distributed control (DC) of the GFM-GFL subgroups, and the adaptive control and switching of each unit of the GFM and GFL groups. The GFM-group maintains the grid-connected voltage stability and the GFL-group exhausts the active support. DC at the group level and adaptive control at the unit level are included under the hierarchy of the respective objectives. Finally, a GFL-GFM HWF model is established on the MATLAB/Simulink platform, and the simulation verifies that the proposed strategy can realize the enhancement of the frequency-voltage support capability of the HWF under the premise of grid-connected stability.

关键词： Active-reactive power coupling decoupling factor distributed adaptive control frequency-voltage active support GFL-GFM station GFL-GFM subgroup control

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Cycling performance of layered oxide cathode materials for sodium-ion batteries

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International Journal of Minerals,Metallurgy and Materials 2024年第7期31卷 1720-1744页

作者： Jinpin Wu Junhang Tian Xueyi Sun Weidong Zhuang School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China Beijing Key Laboratory for Green Recovery and Extraction of Rare and Precious Metals University of Science and Technology BeijingBeijing 100083China

Layered oxide is a promising cathode material for sodium-ion batteries because of its high-capacity,high operating voltage,and simple *** performance is an important criterion for evaluating the application prospects of ***,facing challenges,including phase transitions,ambient stability,side reactions,and irreversible anionic oxygen activity,the cycling performance of layered oxide cathode materials still cannot meet the application ***,this review proposes several strategies to address these ***,bulk doping is introduced from three aspects:cationic single doping,anionic single doping,and multi-ion ***,homogeneous surface coating and concentration gradient modification are *** addition,methods such as mixed structure design,particle engineering,high-entropy material construction,and integrated modification are ***,a summary and outlook provide a new horizon for developing and modifying layered oxide cathode materials.

关键词： sodium-ion battery layered oxide materials cycling performance bulking doping surface coating concentration gradient mixed structure high-entropy

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Near telomere-to-telomere genome assemblies of Silkie Gallus gallus and Mallard Anas platyrhynchos restored the structure of chromosomes and “missing” genes in birds

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Journal of Animal science and Biotechnology 2025年第2期16卷 517-530页

作者： Qiangsen Zhao Zhongtao Yin Zhuocheng Hou Frontiers Science Center for Molecular Design Breeding(MOE) State Key Laboratory of Animal Biotech Breedingand National Engineering Laboratory for Animal BreedingCollege of Animal Science and TechnologyChina Agricultural UniversityBeijing 100193China

Background Chickens and ducks are vital sources of animal protein for *** pangenome studies suggest that a single genome is insufficient to represent the genetic information of a species,highlighting the need for more comprehensive *** bird genome has more than tens of microchromosomes,but comparative genomics,annotations,and the discovery of variations are hindered by inadequate telomere-to-telomere level *** aim to complete the chicken and duck genomes,recover missing genes,and reveal common and unique chromosomal features between *** The near telomere-to-telomere genomes of Silkie Gallus gallus and Mallard Anas platyrhynchos were successfully assembled via multiple high-coverage complementary technologies,with quality values of 36.65 and 44.17 for Silkie and Mallard,respectively;and BUSCO scores of 96.55%and 96.97%for Silkie and Mallard,respectively;the mapping rates reached over 99.52%for both assembled genomes,these evaluation results ensured high completeness and *** successfully annotated 20,253 and 19,621 protein-coding genes for Silkie and Mallard,respectively,and assembled gap-free sex chromosomes in Mallard for the first *** analysis revealed that microchromosomes differ from macrochromosomes in terms of GC content,repetitive sequence abundance,gene density,and levels of 5mC *** types of arrangements of centromeric repeat sequence centromeres exist in both Silkie and the Mallard genomes,with Mallard centromeres being invaded by *** highly heterochromatic W chromosome,which serves as a refuge for ERVs,contains disproportionately long *** Silkie and the Mallard genomes presented relatively high 5mC methylation levels on sex chromosomes and microchromosomes,and the telomeres and centromeres presented significantly higher 5mC methylation levels than the whole ***,we recovered 325 missing genes via our new genomes and annotated TNFA in Mallard for the first time,r

关键词： Avian Centromere Missing gene Telomere-to-telomere genome 5mC methylation level

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Packet Modification and Utilization Technology of SOHO Router 2

Packet Modification and Utilization Technology of SOHO Route...

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2nd International Conference on Advanced Manufacturing Technology and Manufacturing Systems, ICAMTMS 2023

作者： Gai, Xianzhe Cai, Ruijie Jia, Fan Chen, Hongwei Yang, Pengfei Liu, Shengli State Key Laboratory of Mathematical Engineering and Advanced Computing 62 Science Ave. Zhengzhou450001 China

ISBN: (纸本)9781510667327

As a gateway to handle all intranet terminal traffic, SOHO router plays an important role in the network. In this paper, we introduced the security threats faced by SOHO routers, and on this basis, we propose a packet modification method of " Discard-Resend". The method does not affect the normal operation of the router, nor does it affect the normal communication between the two sides. We have done experiments on this packet modification method in several scenarios from the view of network security personnel and network attackers, and achieved the desired results. The packet modification method of " Discard-Resend" is a basic work in the security research of SOHO router, and it is of great significance. © 2023 SPIE.

关键词： Network security

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Defect dipole-induced ultrahigh eletrostrain in KNN-based piezoceramics for co-fired multilayer actuators with nickel electrodes

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Ceramics International 2025年第16期51卷 22199-22208页

作者： Wang, Binquan Wang, Jie Zhang, Hongjie Guo, Yiping State Key Laboratory of Metal Matrix Composites School of Materials Science and Engineering Shanghai Jiao Tong University Shanghai 200240 China

Co-fired piezoceramic multilayer actuators (MLAs) with the merits of high precision and low power-consumption are widely used in various applications such as nano-positioning and precise manufacturing. Achieving high electrostrain at low electric fields in piezoceramics while reducing production costs through integrating base metals in MLAs has been pursuing over decades. Recent breakthroughs highlight the role of defect dipoles for realizing giant electrostrain in lead-free piezoceramics. However, few works explore the defect dipole construction of these ceramics under reduced sintering atmosphere. Herein, we judiciously modulate defect structure through strategic zirconium-doping and intentional introducing of VK/Na′ in potassium-sodium-niobate-based (KNN-based) piezoceramics, achieving a remarkable unipolar strain of 0.24 % at 20 kV cm−1. Detailed investigation reveals that ZrNb′ and VK/Na′ tend to mitigate the hopping motion of VO... The underlying mechanism for tailoring the strain behavior lies in the synergistic effect of ZrNb′-VO.. and VK/Na′-VO.. defect dipoles. A KNN-based MLA co-fired with nickel electrodes has been fabricated via tape-casting technique, presenting a large converse piezoelectric coefficient of 890 p.m. V−1 for each layer, much superior than that of lead-based counterparts. The excellent thermal stability (6.7 % displacement variation from room temperature to 100 °C), great fatigue resistance (5.2 % over 106 electrical cycles with strain recoverability), and impressive mechanical performances (133 MPa for bending strength and 1.6 MPa m1/2 for fracture toughness) of this lead-free MLA highlight the substantial potential for actuation applications. This work elucidates the intrinsic role of defect reconfigurations in shaping electrical and strain properties of piezoceramics, providing a diagram in developing high-performance, low-cost, and environmental-friendly MLAs. © 2025 Elsevier Ltd and Techna Group S.r.l.

关键词： Sintering

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Antibonding orbital tailor and stress relief engineering for FeS_(2)complex toward superior sodium storage

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Rare Metals 2024年第10期43卷 5048-5059页

作者： You-Bin Zhang Zhen-Guo Qi Fu-Sheng Liu Guo-Hui Qin State Key Laboratory Base for Eco-Chemical Engineering College of Chemical EngineeringQingdao University of Science and TechnologyQingdao 266042China Shandong Synergetic Innovation Center of Ecological and Chemical Engineering Qingdao 266042China

The sluggish kinetics behaviors and vast volume variations of Na^(+)hosts to FeS_(2)anode involved intercalation,and conversion reactions plague its applicability of sodium-ion batteries(SIBs).Here,a significantly expedited kinetics via cation intercalation and considerably relieved stress accumulation by constructing the concave scaffold protector are approached for FeS_(2)*** Mn^(2+)intercalation into FeS_(2),a new stable Mn-FeS_(2)was generated with distorted coordination;elevated antibonding orbital occupancy and lowed d band center to the release of more free Na^(+)were achieved,which was further encapsulated by hollow bowl-like carbon spheres(BC)This cation intercalation and concave morphology strategies confer Mn-FeS_(2)@BC significantly enhanced electron ion transport kinetics via reversed electron transfer to FeS_(2)fast desolvation kinetics,and evidently depressed structural deformation during Na^(+)insertion and ***,Mn-FeS_(2)@BC delivers the longevity and stable Na^(+)storage capacity in both half and full cell ***,Mn-FeS_(2)@BC also displays excellen adaptability in a wider temperature *** work proposes new views into the deep regulation of electrochemical performance of transition metal anodes via intercalation chemistry and concave engineering.

关键词： FeS_(2) Intercalation chemistry Concave engineering Sodium capture

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WiFo: wireless foundation model for channel prediction

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science China(Information sciences) 2025年第6期68卷 372-384页

作者： Boxun LIU Shijian GAO Xuanyu LIU Xiang CHENG Liuqing YANG State Key Laboratory of Photonics and Communications School of Electronics Peking University Internet of Things Thrust The Hong Kong University of Science and Technology (Guangzhou) Department of Electronic and Computer Engineering and Department of Civil and Environmental Engineering The Hong Kong University of Science and Technology

Channel prediction permits to acquire channel state information(CSI) without signaling overhead. However,almost all existing channel prediction methods necessitate the deployment of a dedicated model to accommodate a specific configuration. Leveraging the powerful modeling and multi-task learning capabilities of foundation models, we propose the first space-time-frequency(STF) wireless foundation model(WiFo) to address time-frequency channel prediction tasks in a unified manner. Specifically, WiFo is initially pre-trained over massive and extensive diverse CSI datasets. Then, the model will be instantly used for channel prediction under various CSI configurations without any fine-tuning. We propose a masked autoencoder(MAE)-based network structure for WiFo to handle heterogeneous STF CSI data, and design several mask reconstruction tasks for self-supervised pre-training to capture the inherent 3D variations of CSI. To fully unleash its predictive power, we build a large-scale heterogeneous simulated CSI dataset consisting of 160k CSI samples for *** validate its superior unified learning performance across multiple datasets and demonstrate its state-of-the-art(SOTA) zero-shot generalization performance via comparisons with other full-shot baselines.

关键词： channel prediction channel state information foundation model self-supervised pre-training zero-shot learning

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