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Quantifying structural distortion manipulation for desired perovskite phase:PartⅠ.Paradigm demonstration in tungsten oxides

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Journal of Materiomics 2024年第2期10卷 293-303页

作者： Cheng Fang Hong Wang Siqi Shi State key laboratory of Green building materials China Building Materials AcademyBeijing100024China beijing key laboratory of solar energy and building energy-saving glass materials processing technology China Building Materials AcademyBeijing100024China materials Genome Initiative Center Shanghai Jiao Tong UniversityShanghai200240China School of materials Science and Engineering Shanghai Jiao Tong UniversityShanghai200240China School of materials Science and Engineering Shanghai UniversityShanghai200444China materials Genome Institute Shanghai UniversityShanghai200444China

Slight distortions can cause dramatic changes in the properties of crystalline perovskite materials and their *** to the numerous types of distortions and unclarified distortion-structure relations,a quantitative distortion manipulation for the desired crystalline phase of perovskite materials suitable for various application remains ***,by establishing parameter sets to systematically describe the types,magnitudes and positional relations involved in distortions,we are able to interpret the structural regulations and manipulation strategies in 7 reported crystal *** the con-struction of distortion-phase-property functional curves,we further propose a paradigm to quantify the structural distortion manipulation for desired perovskite *** the example of perovskite-like tungsten oxides,we successfully quantify their volume shrinkage and symmetry increase during *** work verifies that the complicated research and development of perovskite materials can be simplified into a mathematical problem solving process,which will inspire researchers with different backgrounds to participate,especially mathematicians and computer scientists.

关键词： Distortion manipulation Distortion-phase-property function Coordination polyhedron Tungsten oxide Perovskite

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Experimental investigation on indoor daylight environment of building with Cadmium Telluride photovoltaic window

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energy and Built Environment 2024年第3期5卷 404-413页

作者： Yilin Hu Qingwen Xue Haobo Wang Peng Zou Jinming Yang Shikeng Chen Yuanda Cheng State key laboratory of Green building in Western China Xian University of Architecture&TechnologyXianChina College of Civil Engineering Taiyuan University of TechnologyTaiyuanChina

Photovoltaic(PV)windows have received more and more attention in recent years since their active energy-saving *** the surface covered with solar cell modules,the indoor daylight environment of PV windows is obviously different with clear glass ***,despite many scholars have studied the indoor daylight environment of PV windows,there few investigations study it from the perspective of human subjective visual *** this paper,the indoor daylight environment and human visual comfort of building with Cadmium Telluride Photovoltaic(CdTe-PV)window were ***,the parameters of indoor daylight environment and subjective questionnaires in rooms with CdTe-PV window and clear glass window were analyzed *** the basis of this,combined with indoor working surface illuminance and results of subjective questionnaires,the daylight illuminance threshold of human visual comfort was investigated by the method of Mean Bias Degree(MBD).Finally,an evaluation model for indoor daylight environment of buildings with CdTe-PV window was developed by Fuzzy Comprehensive Evaluation *** results showed that the working surface illuminance of CdTe-PV window was lower than that of clear glass room,the CCT of different windows room had a minor gap and the CdTe-PV window room was closer to the recommended range that was *** for CRI,both the CdTe-PV window room and the clear glass room could meet the visual comfort requirements of office ***,it was found that the requirement of human visual comfort was met when indoor working surface illuminance varies between 500-2200lx in the room with CdTe-PV *** last,according to the comprehensive evaluation model proposed in this paper,it was found that the indoor daylight environment of buildings with CdTe-PV window was excellent in the present experiment.

关键词： Cadmium Telluride photovoltaic(CdTe-PV)window Daylight environment Human visual comfort Fuzzy comprehensive evaluation method

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Improvements in energy saving and thermal comfort for electric vehicles in summer through coupled electrochromic and radiative cooling smart windows

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building Simulation 2024年第8期17卷 1231-1251页

作者： Zhoujie Duan Shuangdui Wu Hongli Sun Borong Lin Pei Ding Tao Cui Jeremy To Xi Zhang College of Architectureand Environment Sichuan UniversityChengdu610065China Department of building Science Tsinghua UniversityBejing 100084China keylaboratoryofEco Planning&Green building MinistryofEducationTsinghua UniversityBeijing100084China State key laboratory of Hydraulics and Mountain River Engineering Sichuan UniversityChengdu 610065China School of EmergencyManagement Xihua UniversityChengdu 610039China Department of PSVD Mercedes-benz Group China Ltd.Beijing 100102China

In hot climates,the large amount of cooling load in electric vehicle(EV)results in a lot of battery energy consumption,leading the decrease of driving *** the widespread application of windows in EV,the electrochromic glass(EC)shows great prospect in lowering the cooling ***,researches on the application of EC in EV lack the consideration of both passive cooling measures and passenger comfort,which limits the further application of *** this paper,we proposed an idea combining the novel techniques of both electrochromism and radiative *** fluid dynamics(CFD)is modeled to simulate the application of electrochromic and radiative cooling coupled smart windows in hot parking conditions,exploring the improvement effect of the window on the thermal environment,comfort and energy saving of the *** results indicate that,under the intense sunlight with an outdoor temperature of 33℃,activating the air conditioning to maintain an average interior temperature of 26℃,the coupled windows reduced the cooling capacity of the air conditioning by 762 W compared to regular windows,which can further increase the range of ***,compared to simple electrochromic fully colored glass,the integration of radiative cooling technology can lower the window surface temperature by up to 10.7℃.Moreover,compared to regular windows,the coupled windows lowered the standard effective temperature(SET*)for passengers by approximately 7℃,significantly improving *** research findings are expected to provide guidance for optimizing window design and enhancing the performance of EV.

关键词： electrochromism radiative cooling smart windowel ectric vehicle cabin thermal comfort energy saving

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Mechanism of Boron Oxide as a Phase Regulator for Modification of Manganese Slag

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Journal of Wuhan University of technology(materials Science) 2014年第1期29卷 89-92页

作者：陈平 LI Zhibo 刘荣进 XIANG Weiheng QI Aixiang College of materials Science and Engineering Guilin University of Technology key Lab of New processing technology for Nonferrous Metals & materials Minstry of Education Guang Xi key laboratory of New energy and building energy saving University of Science and technology beijing

The current research focused on adjusting the low hydration activity of the metallurgical slag by phase reconstruction technique. Boron oxide was used as a phase regulator to improve the amorphous phase composition of the manganese slag, consequently enhancing its hydraulic activity. The effects of boron oxide dosage and calcination temperature on the manganese slag amorphous phase content were investigated. XRD and DTG were performed to analyze the hydration mechanism of the manganese slag powder and cement. Results show that, when boron oxide dosage is 15%, calcination temperature is 1 300℃, and holding time for 1 hour, the amorphous content of the modified manganese slag reaches 95% and its 28-day activity index reaches 8 1.7%. The manganese slag powder can then be used as cement or concrete admixtures for the building materials industry.

关键词： boron oxide manganese slag amorphous content hydraulic activity

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Advances in neuromorphic computing:Expanding horizons for AI development through novel artificial neurons and in-sensor computing

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Chinese Physics B 2024年第3期33卷 1-23页

作者：杨玉波赵吉哲刘胤洁华夏扬王天睿郑纪元郝智彪熊兵孙长征韩彦军王健李洪涛汪莱罗毅 Department of Electronic Engineering Tsinghua UniversityBeijing 100084China beijing National Research Center for Information Science and technology Tsinghua UniversityBeijing 100084China

AI development has brought great success to upgrading the information *** the same time,the large-scale artificial neural network for building AI systems is thirsty for computing power,which is barely satisfied by the conventional computing *** the post-Moore era,the increase in computing power brought about by the size reduction of CMOS in very large-scale integrated circuits(VLSIC)is challenging to meet the growing demand for AI computing *** address the issue,technical approaches like neuromorphic computing attract great attention because of their feature of breaking Von-Neumann architecture,and dealing with AI algorithms much more parallelly and energy *** by the human neural network architecture,neuromorphic computing hardware is brought to life based on novel artificial neurons constructed by new materials or *** it is relatively difficult to deploy a training process in the neuromorphic architecture like spiking neural network(SNN),the development in this field has incubated promising technologies like in-sensor computing,which brings new opportunities for multidisciplinary research,including the field of optoelectronic materials and devices,artificial neural networks,and microelectronics integration *** vision chips based on the architectures could reduce unnecessary data transfer and realize fast and energy-efficient visual cognitive *** paper reviews firstly the architectures and algorithms of SNN,and artificial neuron devices supporting neuromorphic computing,then the recent progress of in-sensor computing vision chips,which all will promote the development of AI.

关键词： neuromorphic computing spiking neural network(SNN) in-sensor computing artificial intelligence

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Ribbon-like Cu doped V6O13 as Cathode Material for High-performance Lithium Ion Batteries

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Journal of Wuhan University of technology(materials Science) 2017年第6期32卷 1397-1401页

作者：何金云龙飞 PENG Daijiang WU Xiaoli MO Shuyi ZOU Zhengguang Guangxi key laboratory of New energy and building energy saving Guilin University of Technology Guilin 541004 China keylaboratory of Nonferrous materials and New processing technology Ministry of Education Guilin University of Technology Guilin 541004 China

Ribbon-like Cu doped V6O（13） was synthesized via a simple solvothermal approach followed by heat treatment in *** an cathode material for lithium ion battery,the ribbon-like Cu doped V6O（13 ）electrode exhibited good capacity retention with a reversible capacity of over 313 m Ah·g^-1 for up to 50 cycles at 0.1C,as well as a high charge capacity of 306 m Ah·g^-1 at a high current rate of 1 C,in comparison to undoped V6O（13 ）electrode（267 m Ah·g^-1 at 0.1C and 273 m Ah·g^-1 at 1 C）.The high rate capability and better cycleability of the doped electrode can be attributed to the influence of the Cu ions on the mophology and the electronic conductivity of V6O（13） during the lithiation and delithiation process.

关键词： vanadium oxide ion doping cathode material lithium ion battery

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Synthesis and evaluation of bio-based elastomer based on diethyl itaconate for oil-resistance applications

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Science China Chemistry 2016年第11期59卷 1376-1383页

作者： Weiwei Lei He Qiao Xinxin Zhou Wencai Wang Liqun Zhang Runguo Wang Kuo-Chih Hua State key laboratory of Organic-Inorganic Composites Beijing University of Chemical Technology key laboratory of beijing City for Preparation and processing of Novel Polymer materials Beijing University of Chemical Technology Engineering Center of Ministry of Education on Elastomer materials energy saving and Resource Utilization Beijing University of Chemical Technology Goodyear Innovation Center Goodyear Tire & Rubber Co.

Bio-based elastomer poly(diethyl itaconate-co-isoprene)(PDEII) was designed and synthesized by redox-initiated emulsion polymerization from diethyl itaconate and isoprene with mass ratio of 20:80, 40:60, 60:40 and 80:20. The number-average molecular weights of PDEII exceeded 140000 with relatively high yields. The physical properties of PDEII, such as glass transition temperatures and thermostability, were comparable with conventional synthetic elastomers and can be readily tuned by varying the ratio of diethyl itaconate to isoprene. The interaction between silica and PDEII macromolecules was effectively enhanced with the increase of diethyl itaconate content by endowing high polarity. The oil-resistance relevant properties of silica/PDEII80(80% diethyl itaconate, 20% isoprene) such as retention of tensile strength, retention of elongation at break and change in volume even surpass those of silica/NBR 240 S after soaked in ASTM 3# oil at different temperatures.

关键词： bio-based elastomer synthesis oil-resistance

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Mass Production of Bi3NbO7/Bi2Zn(2/3)Nb(4/3)O7 Composites and Their Visible-light Photocatalytic Activity

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Journal of Wuhan University of technology(materials Science) 2017年第2期32卷 403-407页

作者：彭代江 ZOU Zhengguang HE Jinyun 龙飞 MO Shuyi ZHOU Huanfu School of Chemistry and Chemical Engineering Guangxi University Nanning 530004 China key laboratory of Nonferrous materials and New processing technology Ministry of Education Guilin University of Technology Guilin 541004 China Guangxi key laboratory of New energy and building energy saving Guilin University of Technology Guilin 541004 China

Series Bi3NbO7/Bi2Zn（2/3）Nb（4/3）O7 （BN/BZN） composites were synthesized through a facile solid state reaction method. The products were characterized by X-ray diffraction（XRD）, field emission scanning electron microscopy（FE-SEM） and UV-vis diffuse reflectance spectroscopy（DRS）. When BN： BZN=0.1 mole ratio, the BN/BZN composite showed the best visible-light-driven photocatalytic performance, which decomposed nearly 100% of Rh B（10 ppm, p H=3-4） within 40 min. The results demonstrated that in-situ solid state synthesis of BN/BZN composites could be an efficient strategy to develop new photocatalyst for environmental remediation.

关键词： visible-light-driven photocatalyst Bi3NbO7/Bi2Zn(2/3)Nb(4/3)O7 composites solid state reaction method

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Utilization of Bayer Red Mud Derived from Bauxite for Belite-Ferroaluminate Cement Production

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Journal of Renewable materials 2020年第11期8卷 1531-1541页

作者： Yanrong Zhao Ping Chen Shifeng Wang Yaxiong Ji Yuanhao Wang Bolin Wu Rongjin Liu College of Material Science and Engineering Guilin University of TechnologyGuilin541004China key laboratory of New processing technology for Nonferrous Metal&materials Ministry of EducationGuilin University of TechnologyGuilin541004China Guangxi key laboratory of New energy and building energy saving Guilin541004China Guangxi Engineering and technology Center for Utilization of Industrial Waste Residue in building materials Guilin541004China Department of Physics College of ScienceTibet UniversityLhasa850000China

Bayer red mud(BRM)is a kind of industrial solid waste characterized by huge volume and high *** disposal generates serious environmental pollution and occupies a large number of *** utilization and recycling of BRM is currently a crucial issue and needs to be addressed as soon as *** chemical composition of BRM is similar to cement *** this study,the feasibility of preparing Belite-ferroaluminate clinker(BFAC)with different BRM was *** physical properties,mechanics performance,radioactivity levels and trace harmful metals leaching were ***,BEI and EDS were used to characterize the mineral formation,and SEM is used to reveal the solidified mechanism of trace harmful *** results show that the preparation of BFAC using a certain amount of BRM was *** formed phases in clinkers mainly included C_(4)A_(3)Š,C_(2)S and C_(4)*** flexural strength and compressive strength of BFAC at 3 days increased whereas 28 and 90 days decreased with the increase of BRM due to the formation of higher C_(4)AF and lower C_(2)*** formation of large amounts of Al_(2)O_(3)·3H_(2)O gel and Fe_(2)O_(3)·3H_(2)O gel in hydration products enhanced the adsorption capability to heavy metals and other *** trace harmful metal concentration in the leaching solution was much less than the upper *** radioactivity level of leaching solution was close to natural radioactive *** is safe as raw material of BFAC.

关键词： Bayer red mud belite-ferroaluminate clinker leaching of harmful metal radioactivity levels phosphogypsum

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Experimental Investigation of Dimensionless Velocity and Shearing Stress in Boundary Layer Flow on Continuous Moving Surface in Power Law Fluids

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Journal of Thermal Science 2011年第2期20卷 115-118页

作者： Hao Zhang Xinxin Zhang Liancun Zheng Weiliang Wang Yuancheng Wang key laboratory of Renewable energy Utilization Technologies in buildings Ministry of Education Jinan 250101China Shandong key laboratory of building energy-saving Technique Shandong Jianzhu University Jinan 250101 China School of Thermal energy Engineering Shandong Jianzhu University Jinan 250101 China Department of Thermal Engineering University of Science and Technology Beijing Beijing 100083 China Department of Mathematics and Mechanics University of Science and Technology Beijing Beijing 100083 China College of Population Resources and Environment Shandong Normal University Jinan 250014 China

An analysis is carried out to study the steady flow characteristics from a continuous flat surface moving in a parallel free stream of non-Newtonian power law fluid. The constitutive equations of the fluid are transformed into dimensionless ones. The velocity field is measured by Particle Image Velocimetry. Experimental results are obtained for the distribution of velocity. The influence of wall velocity ratio parameter on boundary layer flow field is observed in the experiment. Dimensionless velocity distribution and shearing stress distribution are obtained by post-processing experimental results. The effects of various physical parameters like velocity ratio parameter and similarity variable on various momentum transfer characteristics are discussed in detail and shown graphically. It is indicated that dimensionless velocity increases with velocity ratio parameter and similarity variable, and that dimensionless shearing stress decreases with velocity ratio parameter and similarity variable.

关键词： Boundary layer Power law fluid PIV Experiment Dimensionless transformation

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