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Enhanced piezoelectric properties and depolarization temperature in textured(Bi_(0.5)Na_(0.5))TiO_(3)-based ceramics via homoepitaxial templated grain growth

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Journal of materials science & Technology 2024年第9期176卷 91-98页

作者： Yaqing Ma Linjing Liu Hang Xie Zerui Zhang Qiangwei Kou Rui Lv Bin Yang Yunfei Chang Fei Li Functional Materials and Acousto-Optic Instruments Institute School of Instrumentation Science and EngineeringHarbin Institute of TechnologyHarbin 150080China Electronic Materials Research Laboratory(Key Lab of Education Ministry) State Key Laboratory for Mechanical Behavior of Materials and School of Electronic Science and EngineeringXi’an Jiaotong UniversityXi’an 710049China

Enhanced piezoelectric response was usually achieved in(Bi_(0.5) Na_(0.5))TiO_(3)(BNT)-based ceramics with sacrifice of depolarization temperature T_(d),seriously limiting their usage range in electromechanical *** this work,we propose to explore piezoelectric anisotropy and domain engineering in compositionµstructure-controlled textured ceramics to resolve this issue.[001]c-textured 0.94(Bi_(0.5) Na_(0.5))TiO_(3)–0.06BaTiO_(3)(0.94BNT-0.06BT)ceramics with Lotgering factor F_(001)-91% were fabricated through homoepitaxial templated grain growth(TGG)via using 0.94BNT-0.06BT microplatelet *** textured samples exhibited more ordered domains with facilitated domain switching behavior,being consistent with saturated high polarization achieved at lower electric *** F_(001) to above 60%enables rapid enhancement of piezoelectric ***,compared to non-textured counterpart,the maximally textured ceramics exhibited-236%enhanced piezoelectric coefficient(d_(33)-302 pC/N)and-280% enhanced piezoelectric voltage coefficient(g_(33)-49.8×10^(−3)Vm/N),together with slightly increased depolarization temperature(T_(d)-106℃).Moreover,those values are approaching or even higher than the single-crystal *** work not only provides important guidelines for design and synthesis of novel textured ceramics with improved comprehensive electrical properties,but also can expand application fields of BNT-based ceramics.

关键词： Lead-free ceramics Templated grain growth Piezoelectric coefficient Depolarization temperature Domain dynamics

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Solving the Singlet Oxygen Puzzle in Metal-O_(2) Batteries:Current Progress and Future Directions

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Electrochemical Energy Reviews 2024年第1期7卷 184-203页

作者： Yaying Dou Shuochao Xing Zhang Zhang Zhen Zhou Interdisciplinary Research Center for Sustainable Energy Science and Engineering School of Chemical EngineeringZhengzhou UniversityZhengzhou 450001HenanChina Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) College of ChemistryNankai UniversityTianjin 300071China

The development of aprotic alkali metal-oxygen batteries has shown promise due to their high theoretical specific energy,which is supported by the exergonic oxygen ***,practical realization of these batteries has been impeded by parasitic reactions that compromise their rechargeability,efficiency,and cycle *** research has identified highly reactive singlet oxygen(^(1)O_(2))as the main cause of degradation,which has led to a focus on understanding and harnessing this reactive *** review provides a summary of current knowledge on the formation mechanisms of^(1)O_(2),identifies knowledge gaps that need to be addressed in the future,and discusses the implications of contaminants and battery components for^(1)O_(2)*** review also covers recent advances in deactivating and taming^(1)O_(2),and explains the mechanisms that underpin these *** conclude with perspectives on the remaining challenges and future research opportunities in the field of^(1)O_(2)-related(electro)chemistry in metal-oxygen batteries.

关键词： Singlet oxygen Metal-oxygen batteries Reactive oxygen species Lithium-oxygen batteries Physical quencher

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MOF-derived ZrO_(2)/C-polyvinylidene fluoride composite towards negative permittivity regulation mechanism

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Journal of materials science & Technology 2024年第12期179卷 50-56页

作者： X.T.Song G.H.Fan Y.Liu R.H.Fan Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials(Ministry of Education) Jinan 250061China Institute of Advanced Electrical Materials Qingdao University of Science&TechnologyQingdao 266042China College of Ocean Science and Engineering Shanghai Maritime UniversityShanghai 201306China

Composites featuring negative permittivity have garnered significant attention for their potential in novel capacitance designs,coil-less electrical inductors,and electromagnetic shielding *** this study,we prepared polyvinylidene fluoride(PVDF)matrix composites filled with ZrO_(2)/C nanoparticles de-rived from metal-organic frameworks(MOFs)via a hot-pressing *** an increase in the ZrO_(2)/C content to 30 wt.%,electrical percolation was observed,accompanied by a transition mechanism from hopping conduction to metal-like *** enabled the realization of ZrO_(2)/C/PVDF composites with tailorable negative permittivity properties,attributed to the plasmonic oscillation of free electrons in the composites beyond the percolation threshold(30 wt.%).Furthermore,the permittivity transition along to a shift in the electrical behavior of the percolative composites from capacitive to *** explored the regulatory mechanism behind the negative permittivity in this random composite system,and our findings highlight the potential of these tunable negative permittivity media as promising candi-dates for diverse electromagnetic applications.

关键词： Negative permittivity Electrical properties Plasma oscillation Polymeric composites

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Anti-Corrosion and Reconstruction of Surface Crystal Plane for Zn Anodes by an advanced Metal Passivation Technique

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Energy & Environmental materials 2023年第4期6卷 166-172页

作者： Si Liu Hongxin Lin Qianqian Song Jian Zhu Changbao Zhu State Key Laboratory of Optoelectronic Materials and Technologies Department of Materials Science and EngineeringKey Laboratory for Polymeric Composite and Functional Materials of Ministry of EducationGuangzhou Key Laboratory of Flexible Electronic Materials and Wearable DevicesSun Yat-Sen UniversityGuangzhou 510275China

For the aqueous Zn-ion battery,dendrite formation,corrosion,and interfacial parasitic reactions are major issues,which greatly inhibits their practical *** to develop a method of Zn construction or treatment to solve these issues for Zn anodes are still great ***,a simple and cheap metal passivation technique is proposed for Zn anodes from a corrosion science *** to the metal anticorrosion engineering,the formed interfacial protective layer in a chemical way can sufficiently solve the corrosion ***,the proposed passivity approach can reconstruct Zn surface-preferred crystal planes,exposing more(002)planes and improving surface hydrophilicity,which inhibits the formation of Zn dendrites and hydrogen evolution *** expected,the passivated Zn achieves outstanding cycling life(1914 h)with low voltage polarization(<40 mV).Even at 6 mA cm^(−2) and 3 mA h cm^(−2),it can achieve stable Zn deposition over 460 *** treated Zn anode coupled with MnO_(2) cathode shows prominently reinforced full batteries service life,making it a potential Zn anode candidate for excellent performance aqueous Zn-ion *** proposed passivation approach provides a guideline for other metal electrodes preparation in various batteries and establishes the connections between corrosion science and batteries.

关键词： anti-corrosion aqueous zinc ion battery interfacial protective layer metal passivation technique reconstruction of surface crystal plane

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Regulating the bioactivity of non-glycosylated recombinant human bone morphogenetic protein-2 to enhance bone regeneration

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Bioactive materials 2024年第8期38卷 169-180页

作者： Yuanman Yu Rui Chen Xinye Chen Jing Wang Changsheng Liu The State Key Laboratory of Bioreactor Engineering East China University of Science and TechnologyShanghai200237PR China Key Laboratory for Ultrafine Materials of Ministry of Education Engineering Research Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and TechnologyShanghai200237PR China Frontiers Science Center for Materiobiology and Dynamic Chemistry East China University of Science and TechnologyShanghai200237PR China

Recombinant human bone morphogenetic protein-2(rhBMP-2)is the predominant growth factor that effectively induces osteogenic differentiation in orthopedic ***,the bioactivity and stability of rhBMP-2 are intrinsically associated with its sequence,structure,and storage *** this study,we successfully determined the amino acid sequence and protein secondary structure model of non-glycosylated rhBMP-2 expressed by an *** expression system through X-ray crystal structure ***,we observed that acidic storage conditions enhanced the proliferative and osteoinductive activity of *** the osteogenic activity of non-glycosylated rhBMP-2 is relatively weaker compared to glycosylated rhBMP-2;however,this discrepancy can be mitigated by incorporating exogenous chaperone ***,such information is crucial for rationalizing the design of stabilization methods and enhancing the bioactivity of rhBMP-2,which may also be applicable to other growth factors.

关键词： Recombinant human bone morphogenetic protein-2 Osteogenic activity Protein stability Sulfated polysaccharide

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Rapid and effective treatment of chronic osteomyelitis by conductive network-like MoS2/CNTs through multiple reflection and scattering enhanced synergistic therapy

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Bioactive materials 2024年第1期31卷 284-297页

作者： Liguo Jin Shuilin Wu Congyang Mao Chaofeng Wang Shengli Zhu Yufeng Zheng Yu Zhang Zhaoyang Li Zhenduo Cui Hui Jiang Xiangmei Liu School of Materials Science&Engineering The Key Laboratory of Advanced Ceramics and Machining Technology By the Ministry of Education of ChinaTianjin UniversityTianjin300072China Biomedical Materials Engineering Research Center Hubei Key Laboratory of Polymer MaterialsMinistry-of-Education Key Laboratory for the Green Preparation and Application of Functional MaterialsSchool of Materials Science&EngineeringState Key Laboratory of Biocatalysis and Enzyme EngineeringHubei UniversityWuhan430062China School of Materials Science&Engineering Peking UniversityBeijing100871China School of Health Science&Biomedical Engineering Hebei University of TechnologyTianjin300401China Department of Orthopedics Guangdong Provincial People’s HospitalGuangdong Academy of Medical SciencesGuangzhou510080China

Staphylococcus aureus(***)-infected chronic osteomyelitis(COM)is one of the most devastating infectious diseases with a high recurrence rate,often leading to amputation and even *** is incurable by all the current strategies involving the clinical use of radical debridement and systemic intravenous ***,we reported on a microwave(MW)-assisted therapy for COM by constructing a heterojunction formed by flake nanoflower-shaped molybdenum disulfide(MoS2)and tubular carbon nanotubes(CNTs).This composite could achieve a combination of MW thermal therapy(MTT)and MW dynamic therapy(MDT)to accurately and rapidly treat COM with deep tissue *** vitro and in vivo experiments showed that MoS2/CNTs were effective in non-invasively treating ***-induced COM due to the heat and reactive oxygen species(ROS)produced under MW *** mechanism of heat and ROS generation was explained by MW network vector analysis,density of states(DOS),oxygen adsorption energy,differential charge and finite element(FEM)under MW *** the Fermi layer was mainly contributed by the Mo-4d and C-2P orbitals,MoS2/CNTs could store a large amount of charge and easily release more *** addition,charge accumulation and dissipation motion were strong on the surface of and inside MoS2/CNTs because of electromagnetic hot spots,resulting in the spilling out of a great deal of high-energy *** to the low oxygen adsorption energy of MoS2/CNTs-O2,these high-energy electrons combined further with the adsorbed oxygen to produce ROS.

关键词： Chronic osteomyelitis Antibacterial Carbon nanotubes Molybdenum disulfide Microwave therapy

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Stabilizing iridium sites via interface and reconstruction regulations for water oxidation in alkaline and acidic media

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Journal of Energy Chemistry 2024年第2期89卷 355-363,I0009页

作者： Weibin Chen Yanhui Song Lei Li Junjie Guo Zhan Lin Guangdong Provincial Key Laboratory of Plant Resources Biorefinery School of Chemical Engineering and Light IndustryGuangdong University of TechnologyGuangzhou 510006GuangdongChina Key Laboratory of Interface Science and Engineering in AdvancedMaterials Ministry of EducationTaiyuan University of TechnologyTaiyuan 030024ShanxiChina

Exploring effective iridium(Ir)-based electrocatalysts with stable iridium centers is highly desirable for oxygen evolution reaction(OER).Herein,we regulated the incorporation manner of Ir in Co_(3)O_(4)support to stabilize the Ir sites for effective *** anchored on the surface of Co_(3)O_(4)in the form of Ir(OH)_6 species,the created Ir-OH-Co interface leads to a limited stability and poor acidic OER due to Ir *** doped into Co_(3)O_(4)lattice,the analyses of X-ray absorption spectroscopy,in-situ Raman,and OER measurements show that the partially replacement of Co in Co_(3)O_(4)by Ir atoms inclines to cause strong electronic effect and activate lattice oxygen in the presence of Ir-O-Co interface,and simultaneously master the reconstruction effect to mitigate Ir dissolution,realizing the improved OER activity and stability in alkaline and acidic *** a result,Ir_(lat)@Co_(3)O_(4)with Ir loading of 3.67 wt%requires 294±4 mV/285±3 mV and 326±2 mV to deliver 10 mA cm^(-2)in alkaline(0.1 M KOH/1.0 M KOH)and acidic(0.5 M H_(2)SO_(4))solution,respectively,with good stability.

关键词： interface effect Reconstruction Ir dissolution Ir-O-Co Oxygen evolution reaction

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Nano-frictional mechano-reinforcing porous nanowires scaffolds

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Friction 2024年第5期12卷 968-980页

作者： Licheng HUA Conghu HU Jingkang ZHANG Jin LI Chenjie GU Bin HUANG Guangyong LI Jianke DU Wanlin GUO Smart Materials and Advanced Structures Laboratory School of Mechanical Engineering&MechanicsNingbo UniversityNingbo315211China Key Laboratory for Intelligent Nano Materials and Devices of Ministry of Education Nanjing University of Aeronautics and AstronauticsNanjing210016China Key Laboratory of Impact and Safety Engineering Ministry of EducationSchool of mechanical Engineering and MechanicsNingbo UniversityNingbo315211China Department of Microelectronics and Engineering Ningbo UniversityNingbo315211China

Artificial biomaterials with dynamic mechano-responsive behaviors similar to those of biological tissues have been drawing great *** this study,we report a TiO_(2)-based nanowire(TiO_(2)NWs)scaffolds,which exhibit dynamic mechano-responsive behaviors varying with the number and amplitude of nano-deformation *** is found that the elastic and adhesive forces in the TiO_(2)NWs scaffolds can increase significantly after multiple cycles of *** nanofriction experiments show the triboelectric effect of increasing elastic and adhesive forces during the nano-deformation cycles of TiO_(2)NWs *** properties allow the TiO_(2)NW scaffolds to be designed and applied as intelligent artificial biomaterials to simulate biological tissues in the future.

关键词： TiO_(2)NWs scaffolds nano-deformation mechano-reinforcing triboelectric effect intelligent artificial biomaterials

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Effect of compound treatment of rotating magnetic field and Al-5Ti-1B refiner on microstructure and properties of Al-5Cu alloy

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China Foundry 2023年第3期20卷 225-233页

作者： Ao Wang Kai-jiao Kang Da-yong Li School of Materials Science and Chemical Engineering Harbin University of Science and TechnologyHarbin 150040China Key Laboratory of Advanced Manufacturing and Intelligent Technology Ministry of EducationHarbin University of Science and TechnologyHarbin 150040China

The Al-5Cu alloys were prepared by different treatment methods,including adding a refiner Al-5Ti-1B,exerting a rotating magnetic field(RMF),and compound treatment of both refiner and *** effects of treatment methods on the microstructure,properties,and solid solubility of the Al-5Cu alloy were *** optimal magnetic field parameters and addition amount of refiner were confirmed by *** show that either RMF or adding refiner Al-5Ti-1B alone can refine the grain size,and the refining effect can be further improved by a compound refining treatment with optimized magnetic field parameters(120 A current and 8 Hz frequency) and 1.0wt.% Al-5Ti-1B refiner(RMF*+Al-5Ti-1B*).The average grain size is decreased to 68.1 μm,which is 60.8%,21.1%,and 83.5% lower than that of the alloy treated by the optimized rotating magnetic field,the Al-5Ti-1B refiner,and the alloy without any treatment,*** tensile strength and elongation of the alloy reach 232.5 MPa and 18.6%,respectively,which are obviously higher than those of the alloys treated by rotating magnetic field,Al-5Ti-1B refiner,and the alloy without any treatment,***,the solid solubility of the alloy is also obviously improved compared to the alloys treated by other methods.

关键词： rotating magnetic field refiner compound treatment solid solubility

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Effects of Ni addition on the order-disorder transitions of Fe-Pt intermetallic compounds:An experimental study on Fe-Ni-Pt phase diagrams

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Journal of materials science & Technology 2024年第15期182卷 54-66页

作者： Zunhong Wen Yanglin Wang Wensheng Zhao Min Jiang Hongxiao Li Yuping Ren Gaowu Qin Key Laboratory for Anisotropy and Texture of Materials Ministry of EducationSchool of Materials Science and EngineeringNortheastern UniversityShenyang 110819China Research Center for Metallic Wires Northeastern UniversityShenyang 110819China

The Fe-Pt based intermetallic compounds exhibit good chemical stability and unique magnetic proper-ties,where Ni is an important additional element to optimize the magnetic properties or obtain the outstanding catalytic performances of the Fe-Pt based *** of how Ni addition affects the order-disorder transitions of the Fe-Pt intermetallics is thus necessary;however,the related information is ***,in this work,the phase diagrams of the Fe-Ni-Pt system were experimentally in-vestigated,and as a result,the isothermal sections of the Fe-Ni-Pt system at 600 and 900℃,as well as the vertical sections of Fe_(80)Ni_(20)-Pt_(80)Ni_(20)and Fe_(50)Pt_(50)-Ni_(50)Pt_(50)were *** on these re-sults,the influences of Ni addition on the crystal stabilities and phase transformations of the ordered Fe-Pt intermetallics have been well *** results show that the L1_(0)-FePt and L1_(0)-NiPt phases form a ternary continuous solid solution of L1_(0)-(Fe,Ni)Pt,whereas Ni can dissolve in the L1_(2)-Fe_(3)Pt and L1_(2)-FePt_(3)phases as high as 57.0 at.%and 26.0 at.%at 600℃,*** selective occupancy of Ni atoms has been predicted,which should depend on the alloy *** both the L1_(0)-(Fe,Ni)Pt and L1_(2)-FePt_(3)phases,when Pt contents are less than their stoichiometric values,Ni atoms will preferentially occupy the Pt sublattice,forming as many nearest-neighbor Fe-Pt bonds as *** these results can correlate the alloy compositions,annealing temperatures and crystal structures to both magnetic and catalytic properties,thus providing a basis for optimizing the Fe-Ni-Pt alloys towards enhanced magnetic or catalytic performances.

关键词： Fe-Ni-Pt Phase diagram Phase equilibria Order-disorder transition

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