检索结果-南通市图书馆

Bismuth Oxide Selenium/Graphene Oxide composites:Toward High-Performance Electrodes for Aqueous Alkaline Battery

Energy & Environmental Materials 2021年第3期4卷 465-473页

作者： Yi-Lin Liu Meng-Qiu Li Gui-Gen Wang Le-Yang Dang Fei Li Mei Er Pam Hua-Yu Zhang Jie-Cai Han Hui Ying Yang Shenzhen key laboratory for advanced Materials Harbin Institute of TechnologyShenzhenShenzhen 518055China Pillar of Engineering Product Development Singapore University of Technology and Design8 Somapah RoadSingapore City 487372Singapore national key laboratory of science and technology on advanced composites in special environments Harbin Institute of TechnologyHarbin 150080China

Aqueous alkaline battery represents a promising energy storage technology with both high energy density and high power density as rechargeable ***,the low theoretical capacities,kinetics and stability of anode materials have limited their developments and *** this study,we propose a novel method to produce two-dimensional layered bismuth oxide selenium(Bi_(2)O_(2)Se)and reduced graphene oxide(r GO)composites via a one-step hydrothermal *** volume change caused by phase change during rapid charging and discharging is significantly reduced and the capacity reaches 263.83 m Ah g^(-1)at a current density of 0.5 A g^(-1).The Bi_(2)O_(2)Se/r GO electrode exhibits excellent cycling stability in which the capacity retention rate is 81.04%after 5000 *** importantly,the Bi_(2)O_(2)Se/r GO nanosheet composite is used as the anode electrode material with MnCo_(2)O_(4.5)@Ni(OH)_(2)as the cathode electrode material in aqueous alkaline *** the energy density is 76.16 W h kg^(-1),the power density reaches 308.65 W kg^(-1).At a power density of 10.21 k W kg^(-1),the energy density remains as high as 33.86 W h kg^(-1).The results presented here may advance the understanding of the issues facing the development of aqueous battery anode materials.

关键词： anode materials aqueous alkaline battery Bi_(2)O_(2)Se nanosheet reduced graphene oxide

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Deployment of SMP Miura-ori sheet and its application:Aerodynamic drag and RCS reduction

引用

Chinese Journal of Aeronautics 2022年第8期35卷 121-131页

作者： Ji ZHANG Changguo WANG Lamei ZHANG national key laboratory of science and technology on advanced composites in special environments Harbin Institute of TechnologyHarbin 150080China Center for Composite Materials and Structures Harbin Institute of TechnologyHarbin 150001China Department of Information Engineering Harbin Institute of TechnologyHarbin 150001China

Origami,such as Miura-ori,is the art of folding two-dimensional materials into complex,elaborate,and multifunctional three-dimensional *** this paper,SMP MO sheet are prepared,and the accuracy of deployable process is verified by *** folding and deployable process of SMP MO sheet is divided into 4 stages,and each stage is described in *** stiffness of smart deployable stage is characterized by an exponential decline at the beginning and a gradual decrease to 0,and this is similar to the theoretical shear equivalent modulus in the Y *** effects of various parameters on strain and stress are also *** purpose of studying these mechanical characteristics is to provide driving force reference in application;In terms of application,the flow field and electromagnetic characteristics of MO sheet in different directions are *** aerodynamic drag and RCS reduction of MO unit cell and graded MO sheet during the deployable process are *** the dihedral fold angle is about 45°,the RCS reduction and drag reduction characteristics of MO sheet are relatively optimal,which is most beneficial to morphing aircraft.

关键词： Aerodynamic characteristics Deployment Miura-Ori Morphing aircraft RCS reduction SMP sheet

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Flexible inorganic piezoelectric functional films and their applications

引用

Journal of advanced Ceramics 2023年第3期12卷 433-462页

作者： Liyun Zhen Lijun Lu Yongtao Yao Jingquan Liu Bin Yang national key laboratory of science and technology on Micro/Nano Fabrication Shanghai Jiao Tong UniversityShanghai 200240China Department of Micro/Nano Electronics School of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghai 200240China national key laboratory of science and technology on advanced composites in special environments Harbin Institute of TechnologyHarbin 150001China

Piezoelectric materials play an increasingly important role in energy harvesters,sensors,and *** and thin piezoelectric films have been demonstrated to provide advanced functionalities and improved ***,the research on flexible inorganic piezoelectric thin films has rarely been systematically ***,we summarize the recent advances in the flexible inorganic piezoelectric thin films,focusing on their structural designs,fabrication techniques,and applications in various practical ***,different fabrication techniques suitable for diverse inorganic piezoelectric nanostructures are reviewed,including sol-gel,hydrothermal,electrospinning,and other techniques,and the integration process with flexible substrates is further *** and industrial applications of the flexible piezoelectric thin films are ***,some existing challenges and future perspectives are discussed.

关键词： inorganic piezoelectric thin films fabrication techniques structural design flexible electronics

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Soft-template synthesis of hierarchically porous structured polydimethylsiloxane toward flexible capacitive pressure sensor

引用

中国科学:技术科学英文版 2023年第9期66卷 2696-2706页

作者： HE ShiXue WU Jian DUAN YanHao SU BenLong LIU ShouYao TENG Fei WANG YouShan School of Mechatronics Engineering Harbin Institute of TechnologyHarbin 150001China national key laboratory of science and technology on advanced composites in special environments Harbin Institute of TechnologyHarbin 150090China Center for Rubber Composite Materials and Structures Harbin Institute of TechnologyWeihai 264209China

Flexible pressure sensors play an important role in the field of monitoring, owing to their inherent safety and the fact that they are embedded at the material level. Capacitive pressure sensors have been proven to be quite versatile, with the ability to change the sensitivity and monitoring range by modifying the pore structure of the dielectric layer(elastic modulus). In this paper, capacitive pressure sensors are devised, comprising hierarchical porous polydimethylsiloxane. Due to the inherent hollow and hierarchical micropore structure, the capacitive pressure sensor allows operation at a wider pressure range(~1000 kPa) while maintaining sensitivity(6.33 MPa-1) in the range of 0–300 k Pa. Subsequently, the capacitance output model of the sensor is optimized, which provides an overall approximation of the experimental values for the sensor performance. Additionally, the signal response of the“break up the whole into parts”(by analysis of the whole sensor in parts) is simulated and outputted by the finite element analysis. The simplified analysis model provides a good understanding of the relationship between the local pressure and the signal response of the pressure sensor. For practical applications, seal monitoring and rubber wheel pressure array system are tested, and the proposed sensor shows sufficient potential for application in large deformation elastomer products.

关键词： hierarchically porous structured flexible pressure sensor capacitive response mechanism hydrogel/silicone rubber emulsion

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A reconfigurable dynamic Bayesian network for digital twin modeling of structures with multiple damage modes

引用

Theoretical & Applied Mechanics Letters 2023年第4期13卷 251-260页

作者： Yumei Ye Qiang Yang Jingang Zhang Songhe Meng Jun Wang Xia Tang School of Mechanical technology Wuxi Institute of TechnologyWuxi 214121China national key laboratory of science and technology for national defence on advanced composites in special environments Harbin Institute of TechnologyHarbin 150001China Beijing Institute of Astronautical Systems Engineering Beijing 100076China

Dynamic Bayesian networks(DBNs)are commonly employed for structural digital twin *** present,most researches only consider single damage mode *** is not sufficient for a reusable spacecraft as various damage modes may occur during its service life.A reconfigurable DBN method is proposed in this *** structure of the DBN can be updated dynamically to describe the interactions between different *** common damages(fatigue and bolt loosening)for a spacecraft structure are considered in a numerical *** results show that the reconfigurable DBN can accurately predict the acceleration phenomenon of crack growth caused by bolt loosening while the DBN with time-invariant structure cannot,even with enough *** definition of interaction coefficients makes the reconfigurable DBN easy to track multiple damages and be extended to more complex *** method also has a good physical interpretability as the reconfiguration of DBN corresponds to a specific *** predictions do not require precise knowledge of reconfiguration conditions,making the method more practical.

关键词： Dynamic Bayesian network Reusable spacecraft Damage Reconfiguration

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Synthesis and Characterization of Manganese-copper Spinel Ferrite Powders

引用

Chemical Research in Chinese Universities 2012年第4期28卷 590-593页

作者： CAO Jun-gang LI Jian-jun DUAN Hai-feng LIN Ying-jie College of Chemistry Jilin UniversityChangchun 130012P.R.China national key laboratory of science and technology on advanced composites in special environments Harbin Institute of TechnologyHarbin 150080P.RChina

Magnetic Mn1-xCuxFe2O4（x=0.2,0.5,0.8 and 1.0） nanoparticles were synthesized by single citrate precursor *** samples were characterized by powder X-ray diffraction,vibrating sample magnetometry and electron paramagnetic resonance（EPR）.For samples with a low copper content（x0.5）,the copper ions have a tendency to occupy and substitute the Fe^3＋ at the tetrahedral（A） *** samples with a high copper content（x0.5）,most Cu^2＋ enter into the octahedral（B） *** of Fe^3＋ from octahedral sites to tetrahedral sites leads to the decrease of the saturation *** coercivity is observed for CuFe2O4 nanoparticles due to the strengthened magnetic anisotropy arisen from the Jahn-Teller effect of the octahedral copper *** dependence of magnetic properties of Mn0.8Cu0.2Fe2O4 nanoparticles on calcination temperature was *** cation distribution in Mn0.8Cu0.2Fe2O4 is sensitive to the calcination temperature.

关键词： Magnetically ordered material Sol-gel process Magnetization

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Microstructural regulation,oxidation resistance,and mechanical properties of C_(f)/SiC/SiHfBOC composites prepared by chemical vapor infiltration with precursor infiltration pyrolysis

引用

Journal of advanced Ceramics 2022年第1期11卷 120-135页

作者： Yang LYU Baihe DU Guiqing CHEN Guangdong ZHAO Yuan CHENG Shanbao ZHOU Qingrong LV Xinghong ZHANG Wenbo HAN national key laboratory of science and technology on advanced composites in special environments and Center for Composite Materials and StructuresHarbin Institute of TechnologyHarbin 150080China School of Chemistry and Materials science Heilongjiang UniversityHarbin 150080China School of Physics and Material science Anhui UniversityHefei 230601China

To further improve the oxidation resistance of polymer derived ceramic(PDC)composites in harsh environments,Cf/SiC/SiHfBOC composites were prepared by chemical vapor infiltration(CVI)and precursor impregnation pyrolysis(PIP)*** weight retention change,mechanical properties,and microstructure of C/SiC/SiHfBOC before and after oxidation in air were studied in *** analyses showed that only the interface between the ceramics and fibers was oxidized to some extent,and hafnium had been enriched on the composite surface after oxidizing at different *** main oxidation products of Cf/SiC/SiHfBOC composites were Hf0_(2)and HfSi04 after oxidation at 1500℃for 60 ***,the weight retention ratio and compressive strength of the Cf/SiC/SiHfBOC composites are 83.97%and 23.88±3.11 MPa,*** indicates that the Cf/SiC/SiHfBOC composites should be promising to be used for a short time in the oxidation environment at 1500℃.

关键词： Cf/SiC/SiHfBOC composites precursor infiltration pyrolysis(PIP)method mechanical properties high-temperature oxidation resistance

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Superbroad-band actively tunable acoustic metamaterials driven from poly(ethylene terephthalate)/carbon nanotube nanocomposite membranes

引用

Nano Research 2021年第1期14卷 100-107页

作者： Ying Li Wen Ning Qingyu Peng Minglong Yang Dongyi Lei Siyao Guo Peng Liu Kaili Jiang Xiaodong He Yibin Li School of Civil Engineering Qingdao University of TechnologyQingdao 266033China national key laboratory of science and technology for national defence on advanced composites in special environments Harbin Institute of TechnologyHarbin 150080China State key laboratory of Low-Dimensional Quantum Physics Department of Physics&Tsinghua-Foxconn Nanotechnology Research CenterTsinghua University&Collaborative Innovation Center of Quantum MatterBeijing 100084China Shenzhen STRONG advanced Materials Institute Ltd.Corp Shenzhen 518000China

Actively tunable acoustic metamaterials have attracted ever increasing ***,their tunable frequency range is quite narrow(tens of Hz)even under ultrahigh applied voltage(about 1,000 V).Here,we report a superbroad-band actively tunable acoustic metamaterials with the bandwidth over 400 Hz under a low *** the actively tunable acoustic metamaterials,the acoustic membrane is a laminated nanocomposite consisting of a poly(ethylene terephthalate)(PET)and super-aligned carbon nanotube(CNT)drawn from CN T forest *** laminated nanocomposite membrane exhibits adjustable acoustic properties,whose modulus can be adjusted by applying external electric *** maximum frequency bandwidth of PET/CN T nanocomposite membrane reaches 419 Hz when applying an external DC voltage of 60 *** actively tunable acoustic metamaterials with superbroad-band and lightweight show very promising foreground in noise reduction applications.

关键词： poly(ethylene terephthalate)/carbon nanotube nanocomposite membrane active control acoustic metamaterials noise reduction

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Micro and nanolattice fabrication using projection micro litho stereo exposure additive manufacturing techniques and synchrotron X-ray 3D imaging-based defect characterization

引用

science China(Technological sciences) 2020年第4期63卷 561-570页

作者： HU WenXia LIU LiWu WU WenWang XI Li LENG JinSong FANG DaiNing Institute of advanced Structure technology Beijing Institute of TechnologyBeijing 100081China Department of Astronautical science and Mechanics Harbin Institute of TechnologyHarbin 150001China national key laboratory of science and technology on advanced composites in special environments Harbin Institute of Technology(HIT)Harbin 150080China Department of Mechanical Engineering Massachusetts Institute of TechnologyCambridge MA 02139USA

Synchrotron radiation X-ray micro-computed tomography(SR-μCT)is a 3D imaging technique that is widely employed for the characterization of defects in advanced materials and *** this study,we characterize several typical defects in octettruss and re-entrant 3D lattice structures by using SR-μ*** 3D micro-lattice structures are manufactured using projection micro litho stereo exposure(PμLSE)additive manufacturing *** as-fabricated 3D lattice samples are characterized using optical microscopy,and subsequently,by SR-μ*** more,a statistical analysis is performed to characterize the surface roughness and internal defects qualitatively,whereby the statistical geometrical parameters of struts along different directions and strut joints are analyzed and ***,several typical defects are identified:(1)holes at the joints of the strut and irregular diameter deviations of the strut in the octet-truss lattice structure;(2)irregular diameter variations,bulges,dislocations,grooves,accumulations,and torsion in the re-entrant lattice *** of these defects are related to the building direction,the weight of the structure,bubbles,dust,and impurities during the PμLSE additive manufacturing process.

关键词： synchrotron radiation X-ray additive manufacturing lattice structures defect characterization

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Super broadband absorbing hierarchical CoFe alloy/porous carbon@carbon nanotubes nanocomposites derived from metal-organic frameworks

引用

Journal of Materials science & technology 2022年第23期118卷 218-228页

作者： Siyao Guo Yunfeng Bao Ying Li Hailong Guan Dongyi Lei Tiejun Zhao Baomin Zhong Zhihong Li School of Civil Engineering Qingdao University of TechnologyQingdao 266033China Postdoctoral Workstation Guangdong Dongpeng Holding Company LimitedGuangdong 528031China Cooperative Innovation Center of Engineering Construction and Safety in Shandong Blue Economic Zone Qingdao University of TechnologyQingdao 266033China national key laboratory of science and technology for national defence on advanced composites in special environments Harbin Institute of TechnologyHarbin 150080China

The exploitation of electromagnetic wave absorption(EMA) materials has attracted ever-increasing attention,not only because electromagnetic wave(EMW) originated from overuse of electronic products has threatened human' health seriously,but also because EMA materials can effectively protect radar stealth from being ***,it is still a challenge to obtain broadband and efficient EMA materials to satisfy practical *** this work,we developed a series of hierarchical CoFe alloy/porous carbon@carbon nanotubes(CoFe/PC@CNTs) nanocomposites through revising the proportion of Fe^(2+) in the metal-organic frameworks(MOFs)(CoFe-ZIF) precursor and one-step simple pyrolysis *** cross deposition between CoFe alloy,carbon nanotubes(CNTs),and porous carbon(PC) formed a double conductive network,favoring for achieving excellent EMA ***,when the filler mass ratio is only 10 wt%,the optimized CoFe/PC@CNTs nanocomposites display the best EMA capability,whose minimum reflection loss(RL_(min)) value is-68.94 dB at 13.69 GHz and the effective absorption band(EAB,<-10 dB) reaches up 9.14 GHz with a matching thickness of 2.63 *** addition,the largest EAB can achieve up to 11 GHz(3.35-14.35 GHz) during all matching *** splendid EMA performance benefits the favorable dielectric loss provided by the double conductive network,the good magnetic loss benefited from the evenly distributed CoFe alloy,the excellent impedance matching,rich transmission paths,and multiple ***,such EMA materials with super broadband absorbing provide desirable candidates for lightweight and high-efficient microwave absorbers.

关键词： Electromagnetic wave absorption CoFe alloy/porous carbon@carbon nanotubes nanocomposites Broadband absorbing Metal-organic frameworks

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：