检索结果-南通市图书馆

Pencil painting like preparation for flexible thermoelectric material of high-performance p-type Na_(1.4)Co_(2)O_(4) and novel n-type NaxCo_(2)O_(4)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Materiomics 2021年第5期7卷 1153-1160页

作者： Zhen Tian Jun Wang Xinba Yaer Hui-Jun Kang Xiao-Huan Wang Hui-Min Liu De-zhi Yang Tong-Min Wang School of Materials Science and Engineering Inner Mongolia University of TechnologyNo.49 Aimin StreetXincheng DistrictHohhotInner Mongolia Autonomous Region010051China key laboratory of Solidification Control and Digital Preparation Technology(Liaoning Province) School of Materials Science and EngineeringDalian University of TechnologyDalian116024China International Mongolian Hospital HohhotInner Mongolia Autonomous Region010065China

Flexible thermoelectric materials are presented with potential applications in electronic devices and energy conversion due to their convenient preparation,good flexibility,and various ***,as ductility is rarely observed in inorganic semiconductors and ceramic insulators,reports on applications of inorganic oxide materials in flexible thermoelectric materials are ***,we report a new method for the synthesis of a flexible Na_(1.4)Co_(2)O_(4) thermoelectric material based on Na_(1.4)Co_(2)O_(4) bulk materials,which are prepared by a self-flux method and painted on print *** coefficient and power factor of the obtained thermoelectric material are 78-102 μVK^(-1) and 159e223 mWm^-(1)K^(-2),respectively,in a temperature range of 303-522 K,which are superior to those values of other conductive polymers and their *** interestingly,the n-type Na_(1.4)Co_(2)O_(4) flexible material is obtained in the painting process at higher pressure with Seebeck coefficients of109 to183 μVK^(-1) in a temperature range of 303-522 *** convenient preparation method of these novel flexible thermoelectric materials may be expanded to the synthesis of other flexible thermoelectric materials,which will be the focus of future work.

关键词： Na_(1.4)Co_(2)O_(4) Flexible thermoelectric material Print paper Layered oxide n-type Na_(1.4)Co_(2)O_(4)

Enhanced energy-storage density and temperature stability of Pb_(0.89)La_(0.06)Sr_(0.05)(Zr_(0.95)Ti_(0.05))O_(3) anti-ferroelectric thin film capacitor

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Materiomics 2022年第1期8卷 239-246页

作者： Zhenhua Tang Songcheng Hu Dijie Yao Zeli Li Zhigang Liu Xiaobin Guo Biao Lu Jingmin Fan Xin-Gui Tang Sheng-Guo Lu Ju Gao School of Physics and Optoelectric Engineering Guangdong University of TechnologyGuangzhou Higher Education Mega CenterGuangzhou510006China Guangdong Provincial key laboratory of Functional Soft Condensed Matter School of Materials and EnergyGuangdong University of TechnologyGuangzhou510006China School of Automation Guangdong University of TechnologyGuangzhou510006China Department of Physics The University of Hong KongPokfulam RoadHong KongChina

As the fundamental energy storage components in electronic systems,dielectric capacitors with high power densities were *** this work,the anti-ferroelectric Pb_(0.89)La_(0.06)Sr_(0.05)(Zr_(0.95)Ti_(0.05))O_(3)(PLSZT)ceramics and thin film capacitor were successfully fabricated by a solid-state reaction route and pulsed laser deposition method,*** ferroelectric,dielectric,energy-storage properties,and temperature stability of anti-ferroelectric PLSZT capacitor were investigated in *** compared with the PLSZT ceramic(energy storage density is 1.29 J/cm^(3) with an efficiency of 78.7%under 75 kV/cm),the anti-ferroelectric PLSZT thin film capacitors exhibited the enhanced energy storage density of 52.6 J/cm^(3) with efficiency of 67.7%under an electric field as high as 2068.9 kV/cm,and the enhanced energy-storage temperature stabilities from room temperature(RT)to more than 200℃ were demonstrated,and the oxygen defects mechanism and size effect were ***,the fast charging(~0.05 μs)and discharging(~0.15 μs)time were certified for the anti-ferroelectric PLSZT film *** findings broaden the horizon for PLSZT anti-ferroelectrics in high energy storage properties and show promising for manufacturing pulse power capacitor.

关键词： PLSZT anti-Ferroelectrics Pulsed laser deposition(PLD) Ferroelectric/dielectric properties Energy storage Temperature stability

Large Bubble Entrainment in Drop Impact on a Pool

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Large Bubble Entrainment in Drop Impact on a Pool

Enhanced energy storage performance under low electric field in Sm^(3+) doped AgNbO_(3) ceramics

第十四届全国物理力学学术会议

作者： THORAVAL Marie-Jean LI Yang-Fan THORODDSEN Sigurdur T International Center for Applied Mechanics State Key Laboratory for Strength and Vibration of Mechanical StructuresXi'an Jiaotong University Mechanical Engineering National University of Singapore Division of Physical Sciences and Engineering & Clean Combustion Research Center King Abdullah University of Science and Technology(KAUST)

A drop impacting onto a pool of the same liquid can entrap air bubbles in many different ways.A peculiar entrapment was observed by Pumphrey and Elmore and remained unexplained until *** a small range of *** cavity produced by the impacting drop spreads radially in a dish-shape and then closes to entrap a bubble larger than the *** demonstrate that this large bubble entrapment is caused by a vortex ring produced at the highly curved air-liquid interface during the impact of the *** combine experiments and numerical simulations to show that the vortex ring pulls on the interface on the side of the cavity to stretch it radially,explaining the shape of the *** show that this type of bubble entrapment is only observed for prolate drops,*** elongated.A strong vortex ring is necessary to produce the large bubble entrapment,as a stronger vortex ring will lead to a stronger pulling on the ***,the strength of the vortex ring is not enough to explain the large bubble ***,flatter drops produce a stronger vortex ring,but do not entrap a large *** that case,the stronger vortex ring interacts strongly with the pool surface and self-destruct earlier,before being able to deform the cavity below the pool *** the strength of the vortex ring,its dynamics also plays a critical role in the large bubble *** dynamics of the vortex ring and its distance to the interface are strongly affected by the shape of the drop,explaining why the large bubble entrapment can be observed only for prolate *** observations also explain why the strongest and most penetrating vortex rings emerging from drop impacts are not produced by oblate drops but by more prolate drop shapes,as had been observed in previous *** regular bubble entrapment is caused by the hydrostatic pressure due to *** can be verified easily by removing gravity in the numerical *** is not the case for

关键词： insulating engineering ceramics electrical discharge machining temperature gradient thermal stress numerical simulation

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Journal of Materiomics 2022年第2期8卷 266-273页

作者： Jing Li Li Jin Ye Tian Chao Chen Yu Lan Qingyuan Hu Chao Li Xiaoyong Wei Haixue Yan Electronic Materials Research laboratory Key Laboratory of the Ministry of Education&International Center for Dielectric ResearchSchool of Electronic Science and EngineeringFaculty of Electronic and Information EngineeringXi'an Jiaotong UniversityXi'an710049China School of Materials Science and Engineering Shaanxi University of Science&TechnologyXi'an710021China Instrument Analysis Center Xi'an Jiaotong UniversityChina School of Engineering and Materials Science Queen Mary University of LondonMile End RoadLondonE14NSUK Materials Research Institute Queen Mary University of LondonMile End RoadLondonE14NSUK

Herein,Ag_(1-3x)Sm_(x)NbO_(3)(0≤x≤0.025)antiferroelectric ceramics were successfully synthesized by solid state *** effect of Sm 3þdoping on the structure,property and energy storage performance were *** the increasing Sm^(3+)concentrations,the average grain size ***,the stability of high temperature M phases(i.e.,the structure between T_(f) and T_(3))was expanded,which led to low loss for energy *** of structure analysis and ferroelectric tests revealed the existence of weakly polar/AFE-like phase below T_(f).The Sm 3þdoping tended to suppress the ferroelectric behavior and expand the stability of ***,a significantly enhanced energy storage performance(W_(rec)=3.8 J/cm^(3),η=73%)could be achieved in Ag_(0.97)Sm_(0.01)NbO_(3) ceramic,which was almost 1.5 times larger than that in non-doped AgNbO_(3)(W_(rec)=2.4 J/cm^(3),η=45%)under the similar applied field of 1705 kV/cm±.In particular,the performance of the ceramic showed great temperature stability with variation of±5%from 25℃ to 125℃.These results indicated that the Ag_(0.97)Sm_(0.01)NbO_(3) ceramic could be an ideal lead-free candidate used in the energy storage field.

关键词： Energy storage Lead-free Antiferroelectricity Ferroelectric

Enhanced Energy Storage Properties of La and Zr ModifiedBi0.5(Na0.82K0.18)0.5TiO3 Based ceramics

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Enhanced Energy Storage Properties of La and Zr ModifiedBi0....

Improved Breakdown Strength in(Ba_(0.6)Sr_(0.4))_(0.85)Bi_(0.1)TiO_3 ceramics with Addition of CaZrO_3 for Energy Storage Application

第七届中国储能与动力电池及其关键材料学术研讨与技术交流会

作者： Yang-yang Zhao Ji-wen Xu Chang-rong Zhou Chang-lai Yuan Qing-ning Li Guo-hua Chen Ling Yang Guangxi key laboratory of Information Materials Guilin University of Electronic Technology Guangxi Experiment Center of Information Science Guilin University of Electronic Technology

The[Bi(NaK)]LaTiZrO(BNKLZT)energy storage ceramics were prepared by conventional solid-state reaction ***,surface morphology,dielectric,ferroelectric and energy storage properties of the BNKLBZTceramics were *** BNKLZTceramics showed perovskite,homogeneous and dense *** size was coarsened by Zr doping,and refined by La *** remnant polarization(Pr)and coercive field(Ec),slim P-E loops were obtained by introducing La and Zr *** optimum energy storage property was obtained for thecomposition of La=0.03 and Zr=0.03,with energy storage density of 0.84 J/cm at 80 kV/cm.

关键词： BNKLZT Lead free Energy storage ceramics

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Journal of Wuhan University of Technology(Materials Science) 2018年第3期33卷 545-551页

作者：汪小红 LI Zhenlin CHEN Fangyuan 高俊雄 Lü Wenzhong School of Optical and Electronic Information Huazhong University of Science and Technology key Lab of Functional Materials for Electronic Information(B) MOE Huazhong University of Science and Technology

（Ba（0.6） Sr（0.4））（0.85） Bi（0.1） TiO3 ceramics doped with x wt%CaZrO3（x= 0-10） were synthesized by solid-state reaction method. The effects of CaZrO3 amount on the dielectric properties and structure of（Ba（0.6）Sr（0.4））（0.85） Bi（0.1） TiO3 ceramics were investigated. X-ray diffraction results indicated a pure cubic perovskite structure for all samples and that the lattice parameter increased till x=5 and then slightly decreased. A homogenous microstructure was observed with the addition of CaZrO3. Dielectric measurements revealed a relaxor-like characteristic for all samples and that the diffusivity γ reached the maximum value of 1.78 at x=5. With the addition of CaZrO3, the dielectric constant dependence on electric field was weakened, insulation resistivity enhanced and dielectric breakdown strength improved obviously and reached 19.9 k V/mm at x=7.5. In virtue of low dielectric loss（tan d〈0.001 5）, moderate dielectric constant（er 〉1 500） and high breakdown strength（Eb 〉17.5 k V/mm）, the CaZrO3 doped（Ba（0.6）Sr（0.4））0.85 Bi（0.1） TiO3 ceramic is a potential candidate material for high power electric applications.

关键词： breakdown strength dielectric properties relaxor characteristic energy storage (Ba Sr) TiO3

Ultra-fast charge-discharge and high-energy storage performance realized in K_(0.5)Na_(0.5)NbO_(3)-Bi(Mn_(0.5)Ni_(0.5))O_(3) ceramics

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

Journal of Advanced Dielectrics 2023年第1期13卷 46-56页

作者： Xinru Nie Yan He Qiangqiang Shi Yuqian Liang Lingling Wei Pengfei Liang Xiaolian Chao Guoxin Hu Zupei Yang key laboratory for Macromolecular Science of Shaanxi Province Shaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Laboratory for Advanced Energy Technology School of Materials Science and Engineering Shaanxi Normal UniversityXi’an710062ShaanxiP.R.China School of Chemistry and Chemical Engineering Shaanxi Normal University Xi’an710062ShaanxiP.R.China School of Physics and Information Technology Shaanxi Normal UniversityXi’an 710062ShaanxiP.R.China

Lead-free relaxor ceramics(1−x)K_(0.5)Na_(0.5)NbO_(3)−xBi(Mn_(0.5)Ni_(0.5))O_(3)((1−x)KNN-xBMN)with considerable charge-discharge characteristics and energy storage properties were prepared by a solid state ***,a BMN doping level of 0.04,0.96KNN-0.04BMN ceramic obtained good energy storage performance with acceptable energy storage density Wrec of 1.826 J/cm^(3) and energy storage efficiencyηof 77.4%,as well as good frequency stability(1-500 Hz)and fatigue resistance(1-5000 cycles).Meanwhile,a satisfactory charge-discharge performance with power density PD~98.90 MW/cm^(3),discharge time t0.9ceramics to achieve high-energy storage and ultra-fast charge-discharge performance as well as candidate materials for the application of advanced high-temperature pulse capacitors.

关键词： K_(0.5)Na_(0.5)NbO_(3)ceramics microstructure ultra-fast charge-discharge energy storage.

Defects and solarization in YAG transparent ceramics

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Photonics Research 2019年第5期7卷 549-557页

作者： Le Zhang Jiadong Wu Petr Stepanov Micah Haseman Tianyuan Zhou David Winarski Pooneh Saadatkia Sahil Agarwal Farida A. Selim Hao Yang Qitu Zhang Yun Wang Chingping Wong Hao Chen Jiangsu key laboratory of Advanced Laser Materials and Devices School of Physics and Electronic Engineering Jiangsu Normal University Xuzhou 221116 China Center for Photochemical Sciences Department of Physics and Astronomy Bowling Green State University Bowling Green Ohio 43403 USA School of Materials Science and Engineering Georgia Institute of Technology Atlanta Georgia 30332 USA College of Materials Science and Engineering Nanjing Tech University Nanjing 210009 China School of Mechanical Engineering Jiangsu University Zhenjiang 212013 China

Transparent ceramics are emerging as future materials for lasers, scintillation, and illumination. In this paper, an interesting and surprising phenomenon in YAG transparent ceramics is reported. UV light leads to significant changes in the microstructure of open volume defects and nano clusters as well as in the optical properties. Lightinduced lattice relaxation is suggested as the mechanism behind this intriguing behavior. The complex F-type color center with broad absorption bands is caused by the aliovalent sintering additives(Ca^2+∕Mg^2+) and Fe ion impurities. Two individual peaks in the thermoluminescence spectra illustrate both shallow and deep level *** positron annihilation lifetime data, vacancy clusters and nanovoids are detected and characterized, although these free-volume defects could not be observed by high-resolution transmission electron microscopy. The solarization induced by UV irradiation is associated with a change in the structure and size of defect clusters due to lattice relaxation. Therefore, this work shows how UV irradiation leads not only to a change in the charge state of defects, but also to a permanent change in defect structure and size. It significantly affects the optical properties of YAG ceramics and their performance in lasers and other optical applications. These results are crucial for advancing transparent ceramics technology.

关键词： YAG future materials UV

SINTERING BEHAVIOR AND MICROWAVE DIELECTRIC PROPERTIES OF NOVEL LOW TEMPERATURE FIRING Bi_(3)FeMo_(2)O_(12)CERAMIC

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

Journal of Advanced Dielectrics 2011年第4期1卷 379-382页

作者： DI ZHOU LI-XIA PANG JING GUO YING WU GAO-QUN ZHANG HONG WANG XI YAO Electronic Materials Research laboratory key laboratory of the Ministry of Education Xi'an Jiaotong University Xi'an 710049P.R.China laboratory of Thin Film Techniques and Optical Test Xi'an Technological University Xi'an 710032P.R.China International Center for Dielectric Research Xi'an Jiaotong University Xi'an 710049P.R.China

In the present work,a novel low temperature-ring Bi_(3)FeMo_(2)O_(12) ceramic was synthesized via the solid-state reaction *** monoclinic Bi_(3)FeMo_(2)O_(12) phase can be formed at a low temperature 670℃.A relative density above 96%can be obtained when sintering temperature is above 800℃.The Bi_(3)FeMo_(2)O_(12) ceramic sintered at 845℃ for 2 h shows high microwave dielectric performance with a permittivity-27.2,a Qf value of 14,500GHz and a temperature coefficient of-80 ppm/℃.It might be a candidate for low temperature co-fired ceramics technology.

关键词： Microwave dielectric low-temperature co-fired ceramic(LTCC) bismuth molybdate