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science China Materials 2025年第5期68卷 1462-1471页

作者：左晨刘庚灵刘聪龚安稳陈凯钟杨徐鑫熊文涛狄大卫胡笑添刘焘谈利承邹炳锁陈义旺 State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures School of ResourcesEnvironment and MaterialsGuangxi University Key Laboratory of Bioinorganic and Synthetic Chemistry (Mo 5 Lehn Institute of Functional MaterialsSchool of ChemistrySun Yat-sen University Institute of Polymers and Energy Chemistry (IPEC)/Film Energy Chemistry for Jiangxi Provincial Key Laboratory (FEC) Nanchang University DGUT-CNAM Institute Dongguan University of Technology State Key Laboratory of Extreme Photonics and Instrumentation College of Optical Science and EngineeringInternational Research Center for Advanced PhotonicsZhejiang University

锡基钙钛矿的严重p型掺杂效应和本征缺陷极大地限制了锡基钙钛矿太阳电池（PSCs）器件性能.本研究提出了一种新型n型有机小分子掺杂剂, NDI2HD-Br2,以缓解锡基钙钛矿的严重p型自掺杂并钝化锡相关缺陷. NDI2HD-Br2中具有高电子密度的羰基... 详细信息

锡基钙钛矿的严重p型掺杂效应和本征缺陷极大地限制了锡基钙钛矿太阳电池（PSCs）器件性能.本研究提出了一种新型n型有机小分子掺杂剂, NDI2HD-Br2,以缓解锡基钙钛矿的严重p型自掺杂并钝化锡相关缺陷. NDI2HD-Br2中具有高电子密度的羰基（C=O）可以向钙钛矿带边提供额外的电子,从而将锡基钙钛矿从p型转化为弱n型半导体（费米能级上移0.15 eV）.通过这种方法,锡基PSCs的功率转换效率（PCE）达到15.01%,开路电压高达0.95 V.此外,掺入NDI2HD-Br2的器件具有出色的长期稳定性,在氮气环境中存储1500小时后仍能保持81%的初始PCE.这项研究为调控锡基钙钛矿的电子结构并钝化其本征缺陷以实现高效稳定的太阳能电池提供了一条新途径.

关键词： perovskite solar cells tin electron transfer defects weak n-type

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Optimization of the in vitro biodegradability,cytocompatibility,and wear resistance of the AZ31B alloy by micro-arc oxidation coatings doped with zinc phosphate

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Journal of Materials science & technology 2024年第12期179卷 224-239页

作者： Chao Yang Suihan Cui Ricky KYFu Liyuan Sheng Min Wen Daokui Xu Ying Zhao Yufeng Zheng Paul KChu Zhongzhen Wu School of Advanced Materials Peking University Shenzhen Graduate SchoolShenzhen 518055China Department of Physics Department of Materials Science&Engineeringand Department of Biomedical EngineeringCity University of Hong KongTat Chee AvenueKowloonHong Kong 999077China Shenzhen Institute Peking UniversityShenzhen 518057China PKU-HKUST Shenzhen–Hong Kong Institution Shenzhen 518057China Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Shenzhen Institutes of Advanced Technology Chinese Academy of SciencesShenzhen 518055China National Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composite Shanghai Jiao Tong UniversityShanghai 200240China

As implanted bone fixation materials,magnesium(Mg)alloys have significant advantages because the density and elastic modulus are closest to those of the human bone and they can bio-degrade in the physiological ***,Mg alloys degrade too rapidly and uncontrollably thus hampering clinical *** this study,a highly corrosion-resistant zinc-phosphate-doped micro-arc oxidation(MAO)coating is prepared on the AZ31B alloy,and the degradation process is assessed in *** increasing zinc phosphate concentrations,both the corrosion potentials and charge transfer resistance of the AZ31B alloy coated with MAO coatings increase gradually,while the corrosion current densities di-minish *** tests in the simulated body fluid(SBF)reveal that the increased zinc phos-phate concentration in MAO coating decreases the degradation rate,consequently reducing the release rates of Mg^(2+)and OH-in the physiological micro-environment,which obtains the lowest weight loss of only 5.22%after immersion for 56 *** regulation of degradation provides a weak alkaline environment that is suitable for long-term cell growth and subsequent promotion of bone proliferation,differentiation,mineralization,and *** addition,the zinc-phosphate-doped MAO coat-ings show an improved wear resistance as manifested by a wear rate of only 3.81 x 10^(-5) mm^(3) N^(-1) m^(-1).The results reveal a suitable strategy to improve the properties of biodegradable Mg alloys to balance tissue healing with mechanical degradation.

关键词： Mg alloys MAO coatings Degradation regulation Cytocompatibility Wear resistance

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Discussion on the Mechanism of Hydrostatic Pressure Effect on Anodic Dissolution of X80 Steel

SSRN

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SSRN 2023年

作者： Wu, Shixiong Gao, Zhiming Jia, Hang Liu, Jialiang Hu, Wenbin School of Material Science and Technology Tianjin University Tianjin30072 China Tianjin Key Laboratory of Composite and Functional Materials Tianjin300350 China

High hydrostatic pressure can compress the electric double layer non-uniformly and give a lower value of CH/CD to enhance the difference in electrical potential that drives chemical reaction, which is sure to accelerate anodic dissolution of steel. Within a limited range, its promoting effect on anodic dissolution may contribute to forming thick corrosion product film, which would in turn induce good inhibiting effect on further dissolution;However, when hydrostatic pressure exceeds the critical value of 20Mpa, too high anodic dissolution rate along with promoted Cl- adsorption will deteriorate the protection performance of corrosion product film, and exacerbate local corrosion . © 2023, The Authors. All rights reserved.

关键词： Hydrostatic pressure

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Novel lead-free NaNbO_(3) -based relaxor antiferroelectric ceramics with ultrahigh energy storage density and high efficiency

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Journal of Materiomics 2022年第2期8卷 295-301页

作者： Jie Jiang Xiongjie Li Ling Li Shun Guo Ji Zhang Jing Wang Heguo Zhu Yiping Wang Shan-Tao Zhang School of Materials Science and Engineering Nanjing University of Science and TechnologyNanjing210094China State Key Laboratory of Mechanics and Control of Mechanical Structures College of Aerospace EngineeringNanjing University of Aeronautics and AstronauticsNanjing 210016China National Laboratory of Solid State Microstructures Department of Materials Science and EngineeringCollege of Engineering and Applied Science&Jiangsu Key Laboratory of Artificial Functional Materials&Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093China

The development of environmentally friendly ceramics for electrostatic energy storage has drawn growing interest due to the wide application in high power and/or pulsed power electronic ***,it is difficult to simultaneously achieve ultrahigh recoverable energy storage density(W rec>8 J/cm^(3))and high efficiency(η>80%),which restricts their application in the miniaturized,light weight and easy integrated electronic ***,the novel NaNbO_(3)-(Bi_(0.8)Sr_(0.2))(Fe_(0.9) Nb_(0.1))O_(3) relaxor antiferro-electric ceramics,which integrates the merits of antiferroelectrics and relaxors,are demonstrated to exhibit stabilized antiferroelectric phase and enhanced dielectric relaxor *** particular impor-tance is that the 0.88NN-0.12BSFN ceramic achieves giant electric breakdown strength E_(b)=98.3 kV/mm,ultrahigh W _(rec)=16.5 J/cm^(3) and high h=83.3%,as well as excellent frequency,cycling and thermal reliability *** comprehensive energy storage performance of NN-BSFN not only out-performs state-of-the-art dielectric ceramics by comparison,but also displays outstanding potential for next-generation energy storage capacitors.

关键词： Lead-free NaNbO_(3) Relaxor antiferroelectric Energy storage property

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Improving the stability,lithium diffusion dynamics,and specific capacity of SrLi_(2)Ti_(6)O_(14)via ZrO_(2)coating

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Green Energy & Environment 2022年第1期7卷 53-65页

作者： Hong-Li Ding Hai-Tao Yu Xiao-dong Wang Chen-Feng Guo Bing Zheng Ying Xie Ting-Feng Yi Key Laboratory of Functional Inorganic Material Chemistry Ministry of EducationSchool of Chemistry and Materials ScienceHeilongjiang UniversityHarbin150080China College of Material Science and Chemical Engineering Harbin Engineering UniversityHarbin150001China School of Resources and Materials Northeastern University at QinhuangdaoQinhuangdao066004China Institute of Advanced Electrochemical Energy&School of Materials Science and Engineering Xi'an University of TechnologyXi'anShaanxi710048China

SrLi_(2)Ti_(6)O_(14)(SLTO)coated with different amount of ZrO_(2)was successfully *** as-obtained composites are stacked by a series of particles with a pure phase structure and a good ***,ZrO_(2)coating not only enhances the structural stability of the materials but also facilitates the diffusion of lithium through the SEI *** a result,the redox polarization was reduced,and the reversibility of the electrochemical reaction was ***,SLTO-ZrO_(2)-2 sample delivers a high initial lithiation capacity of 283.6 mA h g^(-1),and the values maintain at 251.7,228.0,207.4,175.3,and 147.7 mA h g^(-1)at the current densities of 0.13,0.26,0.54,1.31,and 2.62 A g^(-1),*** experiment also confirmed that SLTO materials coated with ZrO_(2)are suitable for high power density applications,and the lithiation specific energy efficiency of SLTO-ZrO_(2)-2 is 200%as high as that of pure SLTO at a power density of 1257 W kg^(-1).

关键词： SrLi_(2)Ti_(6)O_(14) ZrO_(2)coating Structural stability Anode material Electrochemical performance

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M2M’AlB4（M = Mn, Fe, Co, M’ = Cr, Mo, W）: Theoretical predicted ordered MAB phases with Cr3AlB4 crystal structure

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Journal of Materials science & technology 2019年第7期35卷 1432-1438页

作者： Fu-Zhi Dai Huimin Xiang Yinjie Sun Yanchun Zhou Science and Technology on Advanced Functional Composite Laboratory Aerospace Research Institute of Materials & Processing Technology

The nanolaminated MAB phases have attracted great research interests due to their unusual combination of metal-like and ceramic-like properties, which is similar to MAX phases. Recently, ordered quaternary MAX phases have been discovered, which enriches the family of MAX phases, and opens a new window to tailor the properties of MAX phases and to develop new MXenes. In the present work, we explored possible ordered quaternary MAB phases with Cr3AlB4 structure(space group: Pmmm) by first-principles calculations. The predictions show that M2M’AlB4 phases with M = Mn, Fe, Co and M’ = Cr, Mo, W exhibit strong tendency of ordering, where M locates at 2t site(0.5, 0.5, z2t) and M’ locates at 1 g site(0, 0.5,0.5). The main driving force of ordering may be the differences in bonding strengths between Al and M elements. Analyses on chemical bonds reveal that bonding strengths increase following the order:Al-Mn < Al-Fe < Al-Co, which is consistent with the prediction that ordering tendency increases when M changes from Mn to Co, as derived from enthalpy differences. The ordered M2M’AlB4 phases with M =Mn or Fe are predicted ferromagnetic and ordered M2M’AlB4 phases display lower shear resistance and possibly better ductility in comparison to Cr3AlB4.

关键词： MAB phase Ordered structure First-principle calculations Cr3AlB4 Chemical bonds Ultrahigh temperature ceramics

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Structural color printing via polymer-assisted photochemical deposition

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Light(science & Applications) 2022年第5期11卷 796-807页

作者： Shinhyuk Choi Zhi Zhao Jiawei Zuo Hossain Mansur Resalat Faruque Yu Yao Chao Wang School of Electrical Computer and Energy EngineeringArizona State UniversityTempeAZ 85287USA Biodesign Center for Molecular Design and Biomimetics Arizona State UniversityTempeAZ 85287USA College of Materials Science and Engineering Key Laboratory of Advanced Functional MaterialsEducation Ministry of ChinaBeijing University of TechnologyBeijing 100124China

Structural color printings have broad applications due to their advantages of long-term sustainability,eco-friendly manufacturing,and ultra-high ***,most of them require costly and time-consuming fabrication processes from nanolithography to vacuum deposition and ***,we demonstrate a new color printing technology based on polymer-assisted photochemical metal deposition(PPD),a room temperature,ambient,and additive manufacturing process without requiring heating,vacuum deposition or *** PPD-printed silver films comprise densely aggregated silver nanoparticles filled with a small amount(estimated<20%volume)of polymers,producing a smooth surface(roughness 2.5 nm)even better than vacuum-deposited silver films(roughness 2.8 nm)at~4 nm ***,the printed composite films have a much larger effective refractive index n(~1.90)and a smaller extinction coefficient k(~0.92)than PVD ones in the visible wavelength range(400 to 800 nm),therefore modulating the surface reflection and the phase *** capability of PPD in printing both ultra-thin(~5 nm)composite films and highly reflective thicker film greatly benefit the design and construction of multilayered Fabry–Perot(FP)cavity structures to exhibit vivid and saturated *** demonstrated programmed printing of complex pictures of different color schemes at a high spatial resolution of~6.5μm by three-dimensionally modulating the top composite film geometries and dielectric spacer thicknesses(75 to 200 nm).Finally,PPD-based color picture printing is demonstrated on a wide range of substrates,including glass,PDMS,and plastic,proving its broad potential in future applications from security labeling to color displays.

关键词： composite printing silver

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Interface structure and strain controlled Pt nanocrystals grown at side facet of MoS_(2)with critical size

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Nano Research 2022年第9期15卷 8493-8501页

作者： Yuchen Zhu Yinghui Sun Hongzhou Zhang Yang He Wei Liu Rongming Wang Beijing Advanced Innovation Center for Materials Genome Engineering Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface ScienceUniversity of Science and Technology BeijingBeijing 100083China School of Physics Trinity College DublinDublin 2D02 PN40Ireland Division of Energy Research Resources Dalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of Sciences457 Zhongshan RoadDalian 116023China

The heterostructure of transition metal nanocrystal on two-dimensional(2D)materials exhibits unique physical and chemical properties through various interfacial *** has been established that the atomic structure and strain in the vicinity of the interface determine the band structure and phonon modes of the nanocrystal,regulating the optical and electrical properties of such ***,metal–support interfacial engineering is a demonstrated approach to acquiring desired properties of the ***,a fundamental understanding of the interfacial structures remains elusive and precise control of the interactions has yet ***,we explore the regulation of interface on MoS_(2)supported Pt nanocrystals which were prepared by reducing ultrasonic dispersed potassium *** Pt-MoS_(2)heterostructure interface was systematically studied by aberration corrected transmission electron *** types of Pt-MoS_(2)interfaces with distinct atomic configurations were *** strain within the Pt nanocrystals is sensitive to the atomic configuration of the supporting MoS_(2),which regulates the size of the Pt *** results provide insights on tuning of nanocrystal strain,paving the way for precise control of 2D semiconductor heterostructures.

关键词： nucleation crystallization metal-2D semiconductor heterostructure interface interaction

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High-Performance Ag_(2)Se/Methyl Cellulose Thermoelectric composites for Flexible Power Generators

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Energy Material Advances 2024年第1期5卷 275-282页

作者： Zuo Xiao Qiufeng Meng Yong Du Ping Wei Jie Qin Jingyu Chen Zhongchang Wang Per Eklund School of Materials Science and Engineering Shanghai Institute of Technology100 Haiquan RoadShanghai 201418China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China The Center of Functional Materials for Working Fluids of Oil and Gas Field School of New Energy and MaterialsSouthwest Petroleum UniversityChengdu 610500China Sichuan Engineering Technology Research Center of Basalt Fiber Composites Development and Application State Key Laboratory of Oil and Gas Reservoir Geology and ExploitationSouthwest Petroleum UniversityChengdu 610500SichuanChina International Iberian Nanotechnology Laboratory Av.Mestre Jose Veiga s/n4715-330 BragaPortugal Thin Film Physics Division Department of PhysicsChemistry and Biology(IFM)Linköping UniversitySE-58183 LinköpingSweden

Flexible thermoelectric generators(FTEGs)offer a promising solution for powering wearable electronics,while their practical applications are mainly obstructed by the moderate properties of flexible thermoelectric(TE)***,flexible Ag_(2)Se nanowire(NW)/methyl cellulose(MC)composite films were developed via facile screen-printing technology combined with cold pressing and annealing treatment,and a highest power factor of 1,641.58μW m^(-1)K^(-2)at 360 K was *** reasons for the high TE performance of the Ag_(2)Se NW/MC composite films were because,after the annealing treatment,the Ag_(2)Se NWs were sintered to form conductive network structures,the crystallinity of Ag_(2)Se was markedly enhanced,and the content of insulating phase MC in the composite film was *** Ag_(2)Se NW/MC composite film held appreciable flexibility,as its room-temperature power factor(1,312.08μW m^(-1)K^(-2))can retain~93%after bending for 1,000 cycles at a radius of 4 ***,the assembled FTEG consisting of 4 strips can generate a maximal power density of 3.51 W m^(-2)at a temperature difference of 14.1 *** results open an effective and large-scale strategy for fabricating high-performance flexible TE materials and energy-harvesting devices.

关键词： annealing treatment cold pressing Ag Se nanowires methyl cellulose flexible thermoelectric generators ftegs offer thermoelectric composites flexible thermoelectric generators power factor

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Designing and synthesis of perovskite nanocrystals: a promising wide-spectrum solar light–responsive photocatalyst and lead ion sensor

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Environmental science and Pollution Research 2024年 1-20页

作者： Ali, Nisar Ahmad, Shakeel Nawaz, Arif Khan, Manzoor Ullah, Aman Idrees, Muhammad Khan, Adnan Khan, Wilayat Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province National & ampLocal Joint Engineering Research Center for Mineral Salt Deep Utilization Huaiyin Institute of Technology Huai’an223003 China Department of Chemistry Bacha Khan University KPK Charsadda Pakistan Institute of Chemical Sciences University of Peshawar Peshawar25120 Pakistan Department of Physics Bacha Khan University KPK Charsadda Pakistan Ibra Oman Henan Key Laboratory of Advanced Semiconductor & amp Functional Device Integration School of Physics Henan Normal University Xinxiang453007 China

Perovskites are an emerging material with a variety of applications, ranging from their solar light conversion capability to their sensing efficiency. In current study, perovskite nanocrystals (PNCs) were designed using theoretical density functional theory (DFT) analysis. Moreover, the theoretically designed PNCs were fabricated and confirmed by various characterization techniques. The calculated optical bandgap from UV–Vis and fluorescence spectra were 2.15 and 2.05 eV, respectively. The average crystallite size of PNCs calculated from Scherrer equation was 15.18 nm, and point of zero charge (PZC) was obtained at pH 8. The maximum eosin B (EB) removal efficiency by PNCs was 99.56% at optimized conditions following first-order kinetics with 0.98 R2 value. The goodness of the response surface methodology (RSM) model was confirmed from analysis of variance (ANOVA), with the experimental F value (named after Ronald Fisher) of 194.66 being greater than the critical F value F0.05, 14, 14 = 2.48 and a lack of fit value of 0.0587. The Stern–Volmer equation with a larger Ksv value of 1.303710×106 for Pb2+ suggests its greater sensitivity for Pb2+ among the different metals tested. Graphical Abstract: (Figure presented.) © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

关键词： Perovskite

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