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Intrinsic ion migration-induced susceptible two-dimensional phase-transition memristor with ultralow power consumption

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Science Bulletin 2025年

作者： Qin, Lanhao Yu, Yimeng Fang, Cheng Liu, Yujie Zhu, Kaichen Ouyang, Decai Liu, Shenghong Song, Bailing Zhou, Ruochen Lanza, Mario Hu, Wenhua Wu, Jinsong Li, Yuan Zhai, Tianyou State Key Laboratory of Materials Processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan430074 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Center of Hydrogen Science State Key Laboratory of Metal Matrix Composites School of Materials Science and Engineering Innovation Center for Future Materials Shanghai Jiao Tong University Shanghai200240 China Physical Science and Engineering Division King Abdullah University of Science and Technology Thuwal23955-6900 Saudi Arabia School of Computer Science and Artificial Intelligence Wuhan University of Technology Wuhan430070 China

Two-dimensional (2D) phase-transition memristors have demonstrated transformative potential for neuromorphic computing, yet challenges like high power consumption, limited endurance, and crystal damage from external ion intercalation persist. Here, we introduce a novel 2D phase-transition memristor leveraging a paradigm-shifting mechanism by exploiting the ultrafast intrinsic Cu+ ion migration within Cu2S. This approach eliminates the need for external ion insertion, significantly reducing crystal damage and enabling exceptional cycling stability with over 400 DC cycles and 500 pulse cycles. The susceptible monoclinic-tetragonal phase-transition induced by intrinsic Cu+ migration achieves an unprecedented SET power consumption of 1 μW at 100 mV, significantly lower in currently reported phase-transition memristors. To further demonstrate the potential of intrinsic ion migration-induced (IIM) memristor, we simulated an IIM memristor crossbar array for image preprocessing in gesture recognition with a high SSIM value of 0.94, showcasing its potential for scalable neuromorphic hardware. This work establishes a new paradigm in low-power, high-performance phase-transition memristors, advancing their practical application in next-generation computing. © 2025 Science China Press

关键词： Memristor Neuromorphic device Two-dimensional materials

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Screen and discovery of 10-component high-entropy borides composed of IV-VI group transition metals and rare earth elements

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Journal of materials Science & technology 2026年 242卷 226-237页

作者： Zifan Zou Liang Xu Ji Zou Shuaihang Qiu Jingjing Liu Wei Ji Wenwen Wu Zhenhao Han Weimin Wang Zhengyi Fu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China Hubei Longzhong Laboratory Wuhan University of Technology Xiangyang Demonstration Zone Xiangyang 441000 China School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 China School of Physics and Information Technology Shaanxi Normal University Xi’an 710062 China

High-entropy borides (HEBs) are emerging as promising candidates for extreme environmental applications due to their exceptional thermal stability, mechanical properties, and tunable electromagnetic properties. This study presents the first systematic investigation of rare-earth-doped deca-component high-entropy borides, (TM 0.9 RE 0.1 )B 2 , (TM = Zr, Hf, Nb, Ta, Ti, W, Cr, V, Mo and RE = Sc, Y, Gd, Dy, Ho, Er, Lu, Sm, Eu, Tm, Tb, Pr, Yb). Evaluations of multiple descriptors, including electron work function and mixing enthalpy, revealed that Sc-containing decaboride (HEB10-Sc) exhibits superior single-phase formation capability. In contrast, the widely used valence electron concentration parameter proved inapplicable due to identical outer-electron counts across rare-earth elements. Boro/carbothermal reduction (BCTR) experiments at 1650 °C, employing transition metal oxides, rare-earth oxides, and B 4 C as precursors, demonstrated that Sc uniquely enables the formation of a single-phase diboride with nine Group IVB-VIB transition metals, unlike other rare-earth dopants. The phase evolution mechanism during the BCTR process was elucidated: ScBO 3 , formed in situ during BCTR, exhibits greater reducibility resistance than the most refractory HfO 2 , thereby suppressing polyboride formation (common in other rare-earth systems) and facilitating single-phase HEB10 formation. The resulting HEB10-Sc displays outstanding electromagnetic wave absorption performance, achieving a reflection loss (RL) of −35.3 dB at 10.6 GHz (3 mm thickness) and an effective absorption bandwidth of 4.7 GHz in the X and Ku bands. These findings underscore the critical role of rare-earth doping in tailoring the structural and functional properties of high-entropy borides, offering a pathway to design advanced multifunctional materials for extreme environments such as thermal protection and high-temperature electromagnetic absorption in aerospace and electronic applications.

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Magnetic field intensity dependent microstructure evolution and recrystallization behavior in a Co-B eutectic alloy

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Journal of materials Science & technology 2023年第7期138卷 93-107页

作者： Fan Bu Yiyuan Zhang Haoxiang Liu Jun Wang Eric Beaugnon Jinshan Li Yixuan He State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi’an 710072China Center of Advanced Lubrication and Seal Materials Northwestern Polytechnical UniversityXi’an 710072China Collaborative Innovation Center of NPU Shanghai 201108China Institute of Superconducting Materials and Applied Technology Northwestern Polytechnical UniversityXi’an 710072China Univ.Grenoble Alpes INSA ToulouseUniversity Toulouse Paul SabatierEMFLCNRSLNCMIGrenoble 38000France

Systematic understanding on the magnetic field intensity dependent microstructure evolution and re-crystallization behavior in a Co-B eutectic alloy under a constant undercooling(ΔT≈100 K)were carried *** of the magnetic field,the comparable size of divorced FCC-Co and Co_(3)B eutectic ellipsoidal grains coexist with a few regular *** the magnetic field is less than 15 T,the elongated primary FCC-Co dendrites parallel to the magnetic field with the dispersed FCC-Co nano-particles em-bedded within the Co_(3)B matrix occupy the inter-dendrite *** the magnetic field increases to 20 T,the FCC-Co/Co_(2)B anomalous eutectic colonies *** formation mechanism of Co_(2)B phase is discussed from several aspects of the competitive nucleation,the chemical redistribution induced by the thermomagnetic-induced convection and magnetic dipole interaction,and the strain-induced ***,the application of magnetic field is found to promote recrystallization,proved by the lower density of misorientation,the appearance of FCC-Co annealed twins and more Co_(3)B *** work could further enrich our knowledge about the magnetic-dependent microstructure evolution and recrystallization process in the undercooled Co-B system and provide guidance for controlling the microstructures and properties under extreme conditions.

关键词： Magnetic field Undercooled solidification Microstructure evolution Recrystallization Co-B alloy

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Magnetic Ordering Boost Excellent Thermoelectric Performance of Flexible Films

SSRN

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SSRN 2023年

作者： Ke, Shaoqiu Nie, Xiaolei Ai, Xiaoling Li, Xiangyu Xu, Wenjie Fu, Kai Chen, Tiantian Liu, Chengshan Zhu, Wanting Wei, Ping Zhao, Wenyu Zhang, Qingjie State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Nanostructure Research Center Wuhan University of Technology Wuhan430070 China

The poor electrical transport performance of flexible thermoelectric (TE) films is a major bottleneck for the development of in-plane heat dissipation technology based on Peltier effect. Herein, ordered Fe nanoparticles (Fe-NPs) and in-situ Fe3O4 nanoparticles (Fe3O4-NPs) as magnetic functional elements (MFEs) were embedded into Bi0.5Sb1.5Te3 (BST)/epoxy flexible films in order to enhance the TE performance. The remarkable increases in electrical conductivity of BST/MFEs/BST/epoxy flexible films have been confirmed to originate from the carrier mobility increases. The retention of large Seebeck coefficient is attributed to the negative magnetoresistance (MR-) induced by spin-dependent scattering and weak localization effect from MFEs. As a result, the maximum power factor of BST/MFEs/BST/epoxy flexible films increased by 45%, and the maximum cooling temperature difference enhanced by 1.6 times. This work reveals that the ordered MFEs can significantly boost the electro-thermal conversion performance of flexible TE films and the magnetoresistance theory can reveal the scattering mechanism of charge carriers in thermo-electromagnetic flexible films. © 2023, The Authors. All rights reserved.

关键词： Magnetoresistance

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Lightweight flower-like nitrogen-doped carbon materials achieve efficient electromagnetic wave absorption

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Carbon Letters 2025年 1-12页

作者： Xie, Xianfei Wang, Sheng Huang, Danqiang Dai, Jianfeng Wang, Qing State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metals School of Materials Science and Engineering Lanzhou University of Technology Lanzhou China School of Science Lanzhou University of Technology Lanzhou China

Structural design and element doping are the research hotspots in the preparation of lightweight absorbers with high absorption performance and low filling rate. This study employs different temperature carbonization and etching techniques to prepare the structure of hollow nitrogen-doped carbon flowers (HNC) and evaluate their microwave absorption performance. At an ultra-low filler loading of 5 wt.%, the microwave absorption intensity of HNC-800 remains stable at -50 dB with a thickness of 3.2 mm. It is noteworthy that the HNC-800 achieved the broadest effective absorption frequency band at a matching thickness of 2 mm, with a bandwidth of 5.36 GHz (ranging from 12.4 to 17.76 GHz). Such remarkable broadband and reflection loss performance can be attributed to the synergistic effects of the hollow porous network structure, interface polarization, and dipole relaxation mechanisms. More significantly, the reduction of the radar cross-section (RCS) amounts to as much as 31.67 dB m2, and it has been attested to possess excellent adsorption efficacy in practical application scenarios. HNC-800, as an absorbing material, holds potential for broad application prospects.

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Effect of Hot-Rolled Oxide Scale on Dry/ Wet Cyclic Corrosion Behavior of Q370qNH Steel in Simulated Industrial Atmosphere Environment

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Journal of Wuhan University of technology(materials Science) 2022年第6期37卷 1216-1227页

作者： REN Yuxia GUO Tieming XU Xiujie LI Guangming TANG Jian NAN Xueli JIA Jiangang State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals Lanzhou University of TechnologyLanzhou 730050China School of Materials Science and Engineering Lanzhou University of TechnologyLanzhou 730050China Gansu Province Transportation Planning Surveydesign Institute Co.LtdLanzhou 730050China

The corrosion behavior of Q370qNH steel in the presence and absence of hot-rolled oxide scale in simulated industrial atmospheric environment was studied by dry/wet cycle accelerated corrosion *** experimental results show that the corrosion type of bare steel is uneven overall corrosion and large size pitting corrosion in small areas;that of oxide scale sample is local dissolution corrosion and small size pitting corrosion in large areas,and corrosion rate is much smaller than that of bare *** corrosion products of both steels are composed ofα-FeOOH,γ-FeOOH,Fe_(2)O_(3),and Fe_(3)O_(4),but the formation mechanism is *** bare steel generatesα-FeOOH andγ-FeOOH through“acid regeneration cycle mechanism”;the oxide scale sample generates hydroxides mainly through the gradual dissolution of the oxide film,and then through“the acid regeneration cycle mechanism”.With the extension of corrosion time,the electrochemical stability of the sample with oxide scale increases,but the change of tafel curve of bare steel sample is not *** simulated industrial atmosphere,the existence of hot-rolled oxide scale can facilitate the formation of dense rust layer on the surface of Q370qNH steel,which is more protective than bare steel.

关键词： Q370qNH steel oxide scale NaHSO3 corrosion behavior

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A novel aluminum-carbon nanotubes nanocomposite with doubled strength and preserved electrical conductivity

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Nano Research 2021年第8期14卷 2776-2782页

作者： Shuai Zhang Gaoqiang Chen Timing Qu Jinquan Wei Yufan Yan Qu Liu Mengran Zhou Gong Zhang Zhaoxia Zhou Huan Gao Dawei Yao Yuanwang Zhang Qingyu Shi Hua Zhang State Key Laboratory of Tribology Key Laboratory for Advanced Materials Processing Technology Ministry of Education of ChinaDepartment of Mechanical Engineering Tsinghua UniversityBeijing 100084China Key Lab for Advanced Materials Processing Technology of Education Ministry School of Materials Science and Engineering Tsinghua UniversityBeijing 100084China Loughborough materials characterization center Department of materialsLoughborough UniversityLoughboroughLEU 3TUUK State Key Laboratory of Special Cable Technology Shanghai Electric Cable Research Institute Co.Ltd.Shanghai 200093China School of Mechanical Engineering Beijing Institute of Petrochemical Technology Beijing 102617China

Enhancing the mechanical strength of highly conductive pure metals usually causes significant reduction in their electrical *** example,introducing phase/matrix interfaces or more grain boundaries,are common and effective methods to strengthen *** it simultaneously increases the electron scattering at the interface,thus reducing the electrical *** this study,we demonstrate that pure aluminum(Al)/carbon nanotubes(CNTs)nanocomposites prepared by friction stir processing have successfully broken through these *** yield strength and tensile strength of Al/CNTs nanocomposites have improved by 104.7%and 51.8%compared to pure Al,while the electrical conductivity remained comparable to that of pure *** explore the potential mechanisms,the interface between CNTs and Al was examined and characterized by transmission electron microscopy(TEM)and Raman *** interfacial reaction compounds were present and no visible physical gaps were observed at CNTs and Al *** defined it as a clean and tightly bonded *** the quantity of phase interface has increased,the electrical conductivity of the nanocomposite remains approximately *** attribute the preserved electrical conductivity to the clean and tightly bonded CNTs/Al interface in the nanocomposite.

关键词： carbon nanotubes/aluminum nanocomposites mechanical properties electrical conductivity friction stir processing interface

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In Situ Tin Doping to Enhance the Cycling Performance of 4.9 V LNMO Cathode materials

In Situ Tin Doping to Enhance the Cycling Performance of 4.9...

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IEEE International Conference on Power and Energy Applications (ICPEA)

作者： Yan Li Jinqiao Du Zhaojie Liang Jie Tian Pei Wang Wen Luo Electric Power Scientific Research Institute Shenzhen Power Supply Bureau Co. Ltd Shenzhen China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan China

ISBN: (数字)9798350356113

ISBN: (纸本)9798350356120

LiNi 0.5 Mn 1.5 O 4 (LNMO) cathode material has the advantages of high energy density (650 Wh/kg), high discharge voltage (4.7 V vs Li+/Li), low raw material cost, low pollution, and high lithium ion transmission efficiency. It is a potential high power, low cost cobalt-free lithium-ion battery cathode material. However, the capacity decline of LNMO during high voltage charge and discharge processes leads to short cycle life, which limits its wide application and commercialization. To address this issue, this article uses in-situ Sn doping to enhance the cycle stability of LNMO. By uniformly mixing acetate salts in stoichiometric ratio and using one-step spray drying method to prepare undoped and Sn-doped LNMO cathode materials, this study systematically investigates the structural changes, morphological characteristics, and electrochemical performance before and after doping. The capacity retention rates of Sn-doped LNMO materials after 350 cycles at 0.7C are 93.5% and 94.5%, respectively, significantly higher than the undoped 80.8%, indicating that in-situ Sn doping can significantly enhance cycle performance. This study demonstrates that the LiNi 0.5 Mn 1.46 O 0.04 electrode prepared by spray drying method, with its simple and straightforward synthesis process and excellent electrochemical performance, has the potential to become a high-performance lithium-ion batteries cathode material.

关键词： Lithium-ion batteries Salt Electric potential Doping High-voltage techniques Voltage Lithium Ions Discharges (electric) Cathodes

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Mechanical properties and deformation mechanisms of a novel fine-grained Mg-Gd-Y-Ag-Zr-Ce alloy with high strength-ductility synergy

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Journal of materials Science & technology 2021年第7期66卷 64-73页

作者： Xiaofei Cui Wei Fu Daqing Fang Guangli Bi Zijun Ren Shengwu Guo Suzhi Li Xiangdong Ding Jun Sun State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong UniversityXi'an710049China School of Materials Science and Engineering Taiyuan University of Science and TechnologyTaiyuan 030024China Stare Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals Lanzhou University of TechnologyLanzhou 730050China

Grain boundary precipitation and segregation play an important role in determining mechanical properties of Mg alloys. In the present work, we studied work focuses on the strengthening and deformation mechanism of coarse-grained(CG) and fine-grained(FG) Mg-Gd-Y-Ag-Zr-Ce alloy. The CG alloy is strengthened by means of age-strengthening with the formation of both basal plate γ" and prismatic plate β’ precipitates in the grain interior. While the strengthening of FC alloy is completed by intergranular alloying segregation and intragranular precipitates γ" and β’. The segregation of alloying elements at the grain boundary and formation of sub-micron particles can stabilize the grain boundary and suppress the intergranular deformation. Consequently, dislocations could be trapped near γ" and β’ precipitates in the grain interior. Unlike CG alloys, the FG alloys exhibit a heterogeneous transition from elastic to plastic deformation via the Lüders plateau. The rapid gliding dislocation multiplications and fine-grained size are necessary and sufficient conditions for the Lüders strains. Our work provides the insights on the evolution of fine-grained microstructure and helps for the design of Mg alloys with good mechanical properties.

关键词： Magnesium alloys Solute segregation Lüders-like deformation Precipitates

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Strain‑Induced Surface Interface Dual Polarization Constructs PML‑Cu/Bi_(12)O_(17)Br_(2) High‑Density Active Sites for CO_(2) Photoreduction

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Nano-Micro Letters 2024年第5期16卷 169-183页

作者： Yi Zhang Fangyu Guo Jun Di Keke Wang Molly Meng‑Jung Li Jiayu Dai Yuanbin She Jiexiang Xia Huaming Li School of Chemistry and Chemical Engineering Institute for Energy ResearchSchool of the Environment and Safety EngineeringJiangsu UniversityZhenjiang 212013People’s Republic of China State Key Laboratory Breeding Base of Green Chemistry‑Synthesis Technology College of Chemical EngineeringZhejiang University of TechnologyHangzhou 310014People’s Republic of China College of Science and Hunan Key Laboratory of Extreme Matter and ApplicationsNational University of Defense TechnologyChangsha 410073People’s Republic of China Department of Applied Physics The Hong Kong Polytechnic UniversityHung HomHong KongPeople’s Republic of China School of Chemistry and Chemical Engineering National Special Superfine Powder Engineering Research CenterNanjing University of Science and TechnologyNanjing 210094People’s Republic of China Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Zhejiang Normal UniversityJinhua 321004People’s Republic of China

The insufficient active sites and slow interfacial charge trans-fer of photocatalysts restrict the efficiency of CO_(2) *** synchronized modulation of the above key issues is demanding and ***,strain-induced strategy is developed to construct the Bi–O-bonded interface in Cu porphyrin-based monoatomic layer(PML-Cu)and Bi_(12)O_(17)Br_(2)(BOB),which triggers the surface interface dual polarization of PML-Cu/BOB(PBOB).In this multi-step polarization,the built-in electric field formed between the interfaces induces the electron transfer from con-duction band(CB)of BOB to CB of PML-Cu and suppresses its reverse ***,the surface polarization of PML-Cu further promotes the electron converge in Cu *** introduction of PML-Cu endows a high density of dispersed Cu active sites on the surface of PBOB,significantly promoting the adsorption and activation of CO_(2) and CO *** conversion rate of CO_(2) photoreduction to CO for PBOB can reach 584.3μmol g-1,which is 7.83 times higher than BOB and 20.01 times than *** work offers valuable insights into multi-step polarization regulation and active site design for catalysts.

关键词： Bi_(12)O_(17)Br_(2) Porphyrin CO_(2)photoreduction Polarization Active sites

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