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Synchronous regulation of V_(2)O_5 cathode and Zn anode using sodium gluconate as an additive for long-life aqueous zinc-ion batteries

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Journal of Energy Chemistry 2025年第4期103卷 703-713页

作者： Rongkun Sun Dan Luo Hongyang Zhou Zhaolong Zhang Yinuo Gao Siyuan Ma Zhi Li Xiaohong Kang Department of Materials Science and Engineering School of Physical Science and EngineeringBeijing Jiaotong UniversityBeijing 100044China Beijing Key Laboratory of Environmental Science and Engineering School of Material Science and EngineeringBeijing Institute of TechnologyBeijing 100081China

Aqueous zinc-ion batteries(AZIBs)are gaining attention owing to their affordability,high safety,and high energy density,making them a promising solution for large-scale energy ***,their performance is hampered by the instability of both the anode-electrolyte interface and the cathode-electrolyte *** use of sodium gluconate(SG),an organic sodium salt with multiple hydroxyl groups,as an electrolyte additive is *** and theoretical analyses demonstrate that Na~+from SG can intercalate and deintercalate within the associated V_(2)O_5 cathode during in situ electrochemical *** action supports the layered structure of V_(2)O_5,prevents structural collapse and phase transitions,and enhances Zn^(2+)diffusion ***,the gluconate anion disrupts the original Zn^(2+)solvation structure,mitigates water-induced side reactions,and suppresses Zn dendrite *** synchronous regulation of both the V_(2)O_5 cathode and Zn anode by the SG additive leads to considerable performance ***‖Zn symmetric batteries demonstrate a cycle life exceeding 2800 h at 0.5 mA cm^(-2)and 1 mAh cm^(-2).In Zn‖V_(2)O_5 full batteries,a high specific capacity of 288.92 mAh g^(-1)and capacity retention of 82.29%are maintained over 1000 cycles at a current density of 2 A g^(-1).This multifunctional additive strategy offers a new pathway for the practical application of AZIBs.

关键词： Aqueous zinc-ion batteries Sodium gluconate Vanadium oxides Zn anode Cycling stability High specific capacity

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Stabilizing high-entropy MAX phases by incorporating tin

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Journal of Advanced Ceramics 2025年第2期14卷 159-171页

作者： Lei Cao Xinghua Zhu Shuai Fu Detian Wan Yiwang Bao Yanchun Zhou Man Jiang Longsheng Chu Qingguo Feng Chunfeng Hu Key Laboratory of Advanced Technologies of Material Ministry of EducationSchool of Material Science and EngineeringSouthwest Jiaotong UniversityChengdu 610031China State Key Laboratory of Green Building Material China Building Material AcademyBeijing 100024China Henan Key Laboratory of High Performance Carbon Fiber Reinforced Composites Institute of Carbon Matrix CompositesHenan Academy of SciencesZhengzhou 450046China School of Material Science and Engineering Zhengzhou UniversityZhengzhou 450001China

High-entropy nanolaminated materials, referred to as MAX phases, have exceptional potential in various fields, including physics, mechanics, and energy storage, owing to their diverse compositions and outstanding properties. However, synthesizing stable high-entropy phases presents significant challenges because of the considerable differences in the physical and chemical properties of complex elements. In this study, we added low-melting-point metal tin (Sn) as an additive to facilitate the formation of solid solutions. The cohesion energy and formation enthalpy of the Sn-containing system are negative, which maintains the thermodynamic stability of the system, and the incorporation of Sn decreases the mixing enthalpy of the target high-entropy MAX phase and inhibits the formation of competing phases. The addition of Sn increases the lattice parameter and improves the structural stability by increasing the lattice distortion of octahedral M6X and prism M6A, which facilitates the successful synthesis of single-phase high-entropy MAX bulk materials. In addition, the high-entropy MAX phases with added Sn retain good mechanical and physical properties. This study provides a novel approach for the synthesis and application of high-entropy MAX phase materials, which has the potential to contribute to advancements in multiple technological fields.

关键词： high-entropy MAX phase low melting-point metal tin first-principles calculations structural distortion properties

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Reactive self-consumption strategy to suppress SiO_(2) phase transition-induced cracking

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Journal of Advanced Ceramics 2025年第3期14卷 121-131页

作者： Lin Chen Shu-Wen Li Chang-Jiu Li Qiang Zhang Guan-Jun Yang State Key Laboratory for Mechanical Behavior of Materials School of Materials Science and EngineeringXi’an Jiaotong UniversityXi’an 710049China AECC Beijing Institute of Aeronautical Material Beijing 100095China

The lifetime of Si bond coats in environmental barrier coatings(EBCs)is constrained by phase transition-induced cracking at the SiO_(2) *** this study,reactive self-consumption and lattice solid solution strategies are employed to address this limitation via Si-Yb_(4)Al_(2)O_(9)composite *** formation of an Yb_(2)Si_(2)O_(7)layer,through the consumption of the thermally grown SiO_(2) scale and Yb₄Al₂O₉,reduces the SiO₂thickness and significantly lowers the cracking driving ***,the incorporation of Al into the SiO_(2)lattice stabilizes high-temperatureβ-SiO_(2),preventing phase transition-induced *** proposed coating demonstrated an oxidation lifetime 20 times longer than that of pure Si at 1370℃,highlighting its potential as an EBC bond coating.

关键词： environmental barrier coatings bond coating oxidation phase transition cracking

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Unveiling the confined dispersion mechanism of nanomaterials by stereocomplex cross-linked networks in polylactic acid

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Journal of materials science and Technology 2025年 235卷 293-301页

作者： Su, Xiaolong Pan, Qingchun Zhai, Yaling Jia, Chao Wang, Jinqi Xu, Zhe Li, Jiaxin Zhao, Jian Xiang, Hengxue Wei, Xiaoding Zhu, Meifang State Key Laboratory of Advanced Fiber Materials College of Material Science and Engineering Donghua University Shanghai201620 China State Key Laboratory for Turbulence and Complex System Department of Mechanics and Engineering Science College of Engineering Beijing Innovation Center for Engineering Science and Advanced Technology Peking University Beijing100871 China College of Material Science and Engineering Xinjiang University Urumqi830046 China

Nanomaterials are extensively utilized in a multitude of sectors, but their propensity to aggregate can considerably diminish the efficacy of functional materials. A pivotal challenge in this domain is achieving a homogenous distribution of nanomaterials, which is essential for enhancing their performance while also reducing production costs. In this work, we achieve uniform and stable dispersion of various nanomaterials through the confinement effect generated by the stereocomplex cross-linked network formed by the combination of poly (L-lactic) acid and poly (D-lactic) acid. The unique confinement effect of polylactic acid (PLA) isomers is universal and significantly enhances the dispersion of nanomaterials in both PLA solutions and films. To demonstrate the efficacy of our approach, we disperse aggregation-induced emission (AIE) molecules within PLA, which leads to the production of PLA films exhibiting improved fluorescence property. This work provides an effective solution for the preparation of nanocomposite materials that are both high-performing and cost-efficient. © 2025

关键词： Nanoclay

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Distributed Leader-Following Formation Control of Networked Mobile Robots via Global Orientation Estimation

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IEEE Transactions on Network science and engineering 2025年第3期12卷 2135-2150页

作者： Wang, Siqi Wang, Heng Che, Weiwei Li, Qing University of Science and Technology Beijing Key Laboratory of Knowledge Automation for Industrial Processes of Ministry of Education School of Automation and Electrical Engineering Beijing100083 China Northeastern University College of Information Science and Engineering Shenyang110819 China

This article proposes a novel distributed leader-following formation control strategy for multiple networked mobile robots, utilizing the relative position measurements among robots. In particular, the leader is assumed to have the same kinematics as the followers and all the robots do not rely on orientation measurements. Firstly, a global orientation estimation law is proposed in the sense that the followers' orientation information is estimated in the leader's reference frame, only based on the leader's orientation estimation and relative bearing information. Secondly, since the leader is not directly connected to all the followers, a new distributed state observer is designed for each follower to estimate the leader's states. Especially, the designed observer not only removes the algebraic loops issue but also eliminates the requirement for the leader's acceleration information. Furthermore, a distributed formation control law is proposed by incorporating the previous estimations, and it is proved that the closed-loop system consisting of the observer and controller is asymptotically stable. Finally, simulation results validate the effectiveness and superiority of the proposed method. © 2013 IEEE.

关键词： Observers Formation control Estimation Robot sensing systems Position measurement Robot kinematics Mobile robots Topology Decentralized control Accuracy

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Impact of Hard Segment Structures on Fatigue Threshold of Casting Polyurethane Using Cutting Method

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Chinese Journal of Polymer science 2025年第2期43卷 303-315页

作者： Guang-Zhi Jin Le-Hang Chen Yu-Zhen Gong Peng Li Run-Guo Wang Fan-Zhu Li Yong-Lai Lu State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijing100029China Engineering Research Center of Elastomer Materials Energy Conservation and Resources Ministry of EducationBeijing100029China Key Laboratory of Carbon Fiber and Functional polymers Beijing University of Chemical TechnologyBeijing100029China Center of Advanced Elastomer Materials College of Material Science and EngineeringBeijing University of Chemical TechnologyBeijing100029China

The fatigue resistance of casting polyurethane(CPU)is crucial in various sectors,such as construction,healthcare,and the automotive *** its importance,no studies have reported on the fatigue threshold of *** study employed an advanced Intrinsic Strength Analyzer(ISA)to evaluate the fatigue threshold of CPUs,systematically exploring the effects of three types of isocyanates(PPDI,NDI,TDI)that contribute to hard segment structures based on the cutting *** multiple advanced characterization techniques(XRD,TEM,DSC,AFM),the results indicate that PPDI-based polyurethane exhibits the highest fatigue threshold(182.89 J/m^(2))due to a highest phase separation and a densely packed spherulitic structure,although the hydrogen bonding degree is the lowest(48.3%).Conversely,NDI-based polyurethane,despite having the high hydrogen bonding degree(53.6%),exhibits moderate fatigue performance(122.52 J/m^(2)),likely due to a more scattered ***-based polyurethane,with the highest hydrogen bonding degree(59.1%)but absence of spherulitic structure,shows the lowest fatigue threshold(46.43 J/m^(2)).Compared to common rubbers(NR,NBR,EPDM,BR),the superior fatigue performance of CPU is attributed to its well-organized microstructure,polyurethane possesses a higher fatigue threshold due to its high phase separation degree and orderly and dense spherulitic structure which enhances energy dissipation and reduces crack propagation.

关键词： Casting polyurethane Fatigue threshold Cutting method Hard segment structures materials characterization

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Recent Progress in the Auxiliary Phase Enhanced Flexible Piezocomposites

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Energy & Environmental materials 2025年第1期8卷 296-316页

作者： Xin Gao Mupeng Zheng Boyue Hou Junshu Wu Mankang Zhu Yunfan Zhang Ke Wang Bing Han College of Materials Science and Engineering Beijing University of Technology School of Basic Medical Sciences Capital Medical University Department of Orthodontics Peking University School and Hospital of Stomatology & National Center of Stomatology & National Engineering Laboratory for Digital and Material Technology of Stomatology & NMPA Key Laboratory for Dental Materials State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and Engineering Tsinghua University

Piezocomposites with both flexibility and electromechanical conversion characteristics have been widely applied in various fields,including sensors,energy harvesting,catalysis,and biomedical *** the composition of piezocomposites or their preparation process,a category of materials is commonly employed that do not possess piezoelectric properties themselves but play a crucial role in performance *** this review,the concept of auxiliary phase is first proposed to define these materials,aiming to provide a new perspective for designing high-performance piezocomposites.

关键词： auxiliary phase flexibility microstructure piezocomposites piezoelectricity

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MXene Hybridized Polymer with Enhanced Electromagnetic Energy Harvest for Sensitized Microwave Actuation and Self‑Powered Motion Sensing

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Nano-Micro Letters 2025年第3期17卷 265-279页

作者： Yu‑Ze Wang Yu‑Chang Wang Ting‑Ting Liu Quan‑Liang Zhao Chen‑Sha Li Mao‑Sheng Cao School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081People’s Republic of China School of Materials Science and Engineering Peking UniversityBeijing 100871People’s Republic of China School of Mechanical and Material Engineering North China University of TechnologyBeijing 100144People’s Republic of China Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education of the People’s Republic of ChinaHeilongjiang UniversityHarbin 150080People’s Republic of China

Polymeric microwave actuators combining tissue-like softness with programmablemicrowave-responsive deformation hold great promise for mobile intelligentdevices and bionic soft robots. However, their application is challenged by restricted electromagneticsensitivity and intricate sensing coupling. In this study, a sensitized polymericmicrowave actuator is fabricated by hybridizing a liquid crystal polymer with Ti3C2Tx(MXene). Compared to the initial counterpart, the hybrid polymer exhibits unique spacechargepolarization and interfacial polarization, resulting in significant improvements of230% in the dielectric loss factor and 830% in the apparent efficiency of electromagneticenergy harvest. The sensitized microwave actuation demonstrates as the shortenedresponse time of nearly 10 s, which is merely 13% of that for the initial shape memory polymer. Moreover, the ultra-low content of MXene (upto 0.15 wt%) benefits for maintaining the actuation potential of the hybrid polymer. An innovative self-powered sensing prototype that combinesdriving and piezoelectric polymers is developed, which generates real-time electric potential feedback (open-circuit potential of ~ 3 mV) duringactuation. The polarization-dominant energy conversion mechanism observed in the MXene-polymer hybrid structure furnishes a new approachfor developing efficient electromagnetic dissipative structures and shows potential for advancing polymeric electromagnetic intelligent devices.

关键词： Microwave absorption Electromagnetic response Energy harvest Self-sensing Soft actuator

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Recent advances in photopolymerization 3D printing of alumina-ceramic

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Progress in Natural science:materials International 2025年第1期35卷 1-30页

作者： M.Irfan Hussain Min Xia XiaoNa Ren Zhen Shen Muhammad Jamil Changchun Ge Institute of Powder Metallurgy and Advanced Ceramics School of Material Science and Engineering University of Science and Technology Beijing State Key Laboratory of Multimodal Artificial Intelligence Systems Beijing Engineering Research Center of Intelligent Systems and Technology Institute of AutomationChinese Academy of Sciences College of Mechanical and Electrical Engineering Nanjing University of Aeronautics and Astronautics

Digital light processing(DLP) 3D printing has a huge potential for manufacturing intricate and customized ceramic parts with high precision and cost-effectiveness. Research in this field contributes to material innovation,opening the avenues for new process designs in both scientific and industrial sectors. However, the implementation of DLP 3D printing technology in ceramic research has not yet reached the maturity level as that in polymer and tissue engineering. Necessarily, a holistic in-depth literature reporting the successful integration of alumina ceramics within DLP 3D printing technology is urgently needed. This review, systematic examines recent progress in DLP technology, focusing on photopolymer resins that incorporate UV-sensitive monomers, photoinitiators, and dispersants, as well as their synergistic effects on achieving high-quality printing, desirable material properties, and enhanced performance. Further, the review discusses key factors including post-processing characteristics such as debinding and sintering, which influence microstructure, and defect formation including microcracks, porosity and voids. Finally, the challenges associated with printing and sintering are highlighted,aiming to identify focused focused development pathways and potential solution to optimize outcomes. This analysis clarifies existing challenges and also propsoes future applications for DLP technology in the aluminaceramic field.

关键词： Al2O3 ceramics Applications Digital light processing (DLP) Post-processing Resin

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Ballistic response mechanism and resistance-driven evaluation method of UHMWPE composite

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Defence Technology(防务技术) 2025年第2期44卷 1-16页

作者： Yemao He Johnny Qing Zhou Yanan Jiao Hongshuai Lei Zeang Zhao Daining Fang Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures Beijing Institute of TechnologyBeijing 100081China Beijing Protech New Material Science Co. Ltd.Beijing 102200China School of Textile Science and Engineering Tiangong UniversityTianjin 300387China Key Laboratory of Advanced Textile Composite Materials Ministry of EducationInstitute of Textile Composite MaterialsTiangong UniversityTianjin 300387China

The use of ultra-high molecular weight polyethylene(UHMWPE)composite in the design of lightweight protective equipment,has gained a lot of ***,there is an urgent need to understand the ballistic response mechanism and theoretical prediction model of *** paper explores the ballistic response mechanism of UHMWPE composite through experimental and simulation ***,a resistance-driven modeling method was proposed to establish a theoretical model for predicting the bulletproof *** ballistic response mechanism of UHMWPE composite encompassed three fundamental modes:local response,structural response,and coupled *** occurrence ratio of these fundamental response modes during impact was dependent on the projectile velocity and laminate *** bulletproof performance of laminate under different response modes was assessed based on the penetration depth of the projectile,the bulging height on the rear face of the laminate,the thickness of remaining sub-laminate,and residual velocity of the *** absolute deviations of bulletproof performance indicator between theoretical value and experimental value were well within 11.13%,demonstrating that the established evaluation model possessed high degree of prediction accuracy.

关键词： UHMWPE composite Ballistic response mechanism Theoretical model Performance evaluation

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