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Metal organic frameworks-based cathode materials for advanced Li-S batteries: A comprehensive review

Nano Research 2024年第4期17卷 2592-2618页

作者： Zhengkun Xie Boyong Cao Xiyan Yue Ruixue Wang Ziqian Xue Jiajia Wang guoqing Guan Weihua Chen College of Chemistry Zhengzhou UniversityZhengzhou 450001China School of Ecology and Environment Zhengzhou UniversityZhengzhou 450001China School of Materials Science and Engineering Henan Polytechnic UniversityJiaozuo 454003China Laboratory of Energy Conversion Engineering Institute of Regional InnovationHirosaki University3 Bunkyo-choHirosakiAomori 036-8561Japan Institute for Integrated Cell-Material Sciences(iCeMS) Kyoto UniversitySakyo-kuKyoto 606-8501Japan Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) Nankai UniversityTianjin 300071China

Li-S batteries(LSBs)have been considering as new and promising energy storage systems because of the high theoretical energy density and low ***,their practical application is inhibited by several factors,including poor electrical conductivity of electrode materials,greatly volumetric variation,as well as the polysulfide formation upon the *** address these problems,it is imperative to develop and design effective and suitable sulfur host anode *** organic frameworks(MOFs)-based cathode materials,possessing their good conductivity and easy morphology design,have been extensively studied and exhibited enormously potential in *** this review,a comprehensive overview of MOFs-based sulfur host materials is provided,including their electrochemical reaction mechanisms,related evaluation parameters,and their performances used in LSBs in the past few *** particular,the recent advances using in-situ characterization technologies for investigating the electrochemical reaction mechanism in LSBs are presented and ***,the challenges and prospects associated with future research on MOF-related sulfur host materials are *** is anticipated to offer the guidance for the identification of suitable MOFs-based sulfur cathode materials for high-performance LSBs,thereby contributing for the achievement of a sustainable and renewable society.

关键词： lithium metal anode sulfur cathode metal organic frameworks host energy density in-situ characterization

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TiC-Ti复合材料自蔓延高温合成中的组织转变

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稀有金属材料与工程 2005年第10期34卷 1592-1596页

作者：肖国庆范群成顾美转金志浩西安交通大学金属材料强度国家重点实验室

用燃烧波淬熄法研究了TiC-Ti金属陶瓷自蔓延高温合成(SHS法)中的组织转变和反应机理。淬熄试样中保留了未反应区、反应区及已反应区。用扫描电子显微镜观察了燃烧反应中的显微组织转变过程,用能谱仪分析了各微区的成分变化,测量了燃烧温... 详细信息

用燃烧波淬熄法研究了TiC-Ti金属陶瓷自蔓延高温合成(SHS法)中的组织转变和反应机理。淬熄试样中保留了未反应区、反应区及已反应区。用扫描电子显微镜观察了燃烧反应中的显微组织转变过程,用能谱仪分析了各微区的成分变化,测量了燃烧温度Tc,并用XRD分析了反应产物的相组成。实验结果表明:TiC-Ti复合材料的自蔓延高温合成机理可以用溶解-析出机制来描述;Ti首先部分熔化,C溶解在Ti液中,并和Ti发生反应生成TiCx,随着温度的升高,TiCx熔化,形成Ti-C熔体,在降温过程中,细小的TiC大量从Ti-C熔体中析出并聚集,最终形成TiC增强Ti基复合材料。

关键词： TiC-Ti 复合材料自蔓延高温合成组织转变

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Combination of High Yield Strength and Improved Ductility of 21Cr Lean Duplex Stainless Steel by Tailoring Cold Deformation and Low-Temperature Short-Term Aging

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Acta Metallurgica Sinica(English Letters) 2024年第4期37卷 695-702页

作者： Zhenghong Liu Zhigang Wu Ying Han xiaolei Song guoqing Zu Weiwei Zhu Xu Ran Key Laboratory of Advanced Structural Materials Ministry of EducationChangchun University of TechnologyChangchun130012China School of Materials Science and Engineering Changchun University of TechnologyChangchun130012China Jilin Province Key Laboratory of Advanced Materials Processing and Application for Rail Transit Changchun University of TechnologyChangchun130012China

Proper matching of cold-rolled deformation and low-temperature short-term aging can simultaneously enhance the strength and ductility of the lean duplex stainless steel. To investigate this, the microstructure evolution of cold-rolled and aging steels was observed by using scanning electron microscopy, transmission electron microscopy and electron backscattered diffraction. Additionally, the phase volume fraction was measured using X-ray diffraction. In this study, it was observed that the elongation of 21Cr lean duplex stainless steel significantly increased to 16.7% after undergoing moderate cold deformation (~ 40% reduction) and subsequent aging treatment at 550 ℃ for 30 min. Remarkably, the material still maintained a high yield strength of 1045 MPa. Such an excellent mechanical property was attributed to a unique microstructure combination of fine α'-martensite, twins, coarsened austenite resulting from partial martensite reverse transformation, and two-phase fine layered structure. The result of this study may open up new horizons for the alloy development in order to overcome the low ductility of cold-rolled high-strength lean duplex stainless steel.

关键词： Lean duplex stainless steel Cold rolling Aging Microstructure Mechanical properties Use our pre-submission checklist

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Manipulator tracking technology based on FSRUKF

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Journal of Systems Engineering and Electronics 2024年第2期35卷 473-484页

作者： SHI guoqing ZHANG Boyan ZHANG Jiandong YANG Qiming HUANG xiaofeng QUE Jianyao PU Junwei GENG Xiutang School of Electronics and Information Northwestern Polytechnical UniversityXi’an 710072China Northwest Institute of Mechanical&Electrical Engineering Xianyang 712000China

Aiming at the shortcoming that the traditional industrial manipulator using off-line programming cannot change along with the change of external environment,the key technologies such as machine vision and manipulator control are studied,and a complete manipulator vision tracking system is ***,Denavit-Hartenberg(D-H)parameters method is used to construct the model of the manipulator and analyze the forward and inverse kinematics equations of the *** the same time,a binocular camera is used to obtain the threedimensional position of the ***,in order to make the manipulator track the target more accurately,the fuzzy adaptive square root unscented Kalman filter(FSRUKF)is proposed to estimate the target ***,the manipulator tracking system is built by using the position-based visual *** simulation experiments show that FSRUKF converges faster and with less error than the square root unscented Kalman filter(SRUKF),which meets the application requirements of the manipulator tracking system,and basically meets the application requirements of the manipulator tracking system in the practical experiments.

关键词： square root unscented Kalman filter(SRUKF) fuzzy inference manipulator visual servo

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Fabrication of amorphous FeCoNiCuMnP x high-entropy phosphide/carbon composites with a heterostructured fusiform morphology for efficient oxygen evolution reaction

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Journal of Materials Science & Technology 2024年第1期168卷 62-70页

作者： Yifan Zhou Longqing Gao Haoyuan Chen Hao Wang Juan Zhang Xiumin Li Fangfang Duo guoqing Guan School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China Graduate School of Sustainable Community Studies Hirosaki University1-BunkyochoHirosaki 036-8560Japan Graduate School of Science and Technology Hirosaki University3-BunkyochoHirosaki 036-8561Japan Xinxiang University School of Chemistry&Materials EngineeringXinxiang 453003China Energy Conversion Engineering Laboratory Institute of Regional InnovationHirosaki University3-BunkyochoHirosaki 036-8561Japan

Amorphous high-entropy materials with abundant defects,coordinatively unsaturated sites,and loosely bonded atoms could exhibit excellent electrocatalytic ***,how to fabricate such ma-terials with nanostructure as well as amorphous structure is still full of *** this work,high-entropy metal organic framework(HE-MOF)is employed as the self-sacrificial template to fabricate FeCoNiCuMnP x high-entropy phosphide/carbon(HEP/C)*** obtained composite shows a het-erostructured fusiform morphology,in which the HEP is encapsulated by a carbon layer,revealing high electron conductivity as well as rich catalytic active sites for oxygen evolution reaction(OER).Beside,it is found that there is a short-range ordered crystal structure in the amorphous phase,which is bene-ficial for revealing high OER catalytic activity as well as good *** a result,the optimum HEP/C composite shows an overpotential 239 mV@10 mA cm^(−2)with a small Tafel slope of 72.5 mV dec^(−1) for catalyzing OER in alkaline solution.

关键词： Water electrolysis Oxygen evolution reaction High-entropy MOFs High-entropy phosphides Amorphous structure

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The swirl and pyrolysis reaction synergistically enhance solid-solid heat transfer and product separation in cyclone pyrolyzer Author links open overlay panel

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Particuology 2024年第8期91卷 118-127页

作者： Haorui Niu Jingxuan Yang Wenhao Lian Nan Zhang Yongguo Li Hongzheng Ren xiaogang Hao guoqing Guan College of Chemical Engineering and Technology Taiyuan University of TechnologyTaiyuan030024 China School of Chemical Engineering and Technology North University of ChinaTaiyuan030051 China CNNC Key Laboratory on Radioactive Gas Purification Technology China Institute for Radiation ProtectionTaiyuan030006 China Energy Conversion Engineering Laboratory Institute of Regional InnovationHirosaki University3-BunkyochoHirosaki036-8561Japan

Cyclone pyrolyzer is a novel type of downer that combines centrifugal force field and double-layer cyclone *** on transfer behavior is helpful to optimize the pyrolyzer to meet the needs of *** this study,the Computational Particle Fluid Dynamics(CPFD)model is used to analyze the transfer behavior of binary particles,and finds that the swirl and reaction have a synergistic *** effect can increase the heating rate of the particles to the range of flash pyrolysis,and its mechanism lies in the flow field structure of the *** to the centrifugal force field,the particles gather to the near *** rapid swirl,which facilitates intense gas-solid heat transfer,leads to the rapid heating and pyrolysis of biomass *** the pyrolysis proceeds,the mass of the biomass particles becomes smaller and they are more easily affected by the gas flow in *** the action of gas flow,char particles serve as new heat carrier to form the inner cycle of particles,which strengthens the heating *** pyrolysis products are discharged from the exhaust port in time with the flow field of the pyrolyzer to achieve separation from the heat carrier and inhibit the occurrence of secondary reactions.

关键词： Biomass pyrolysis Cyclone pyrolyzer Intra-particle circulation Synergistic effect

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陕西眉县红柱石烧结性能研究

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非金属矿 2006年第1期29卷 12-14页

作者：石振武肖国庆西安建筑科技大学材料科学与工程学院

研究了由陕西眉县红柱石配制的试样的烧结性。试样成型后在1350℃、1450℃和1550℃下煅烧,结果表明:①在1500℃下,完全由红柱石配制的试样S1表现出良好的烧结性;而在实验温度范围内,添加了工业氧化铝的试样S2烧结不充分;②在实验温度范... 详细信息

研究了由陕西眉县红柱石配制的试样的烧结性。试样成型后在1350℃、1450℃和1550℃下煅烧,结果表明:①在1500℃下,完全由红柱石配制的试样S1表现出良好的烧结性;而在实验温度范围内,添加了工业氧化铝的试样S2烧结不充分;②在实验温度范围内,试样S1呈膨胀的特性,且随温度的升高,膨胀程度增强;试样S2表现出收缩的特性,而且随温度的升高收缩程度增大。

关键词：红柱石烧结性莫来石化温度

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无人机载脉冲雷达MTD的实现及实验研究

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信号处理 2000年第4期16卷 362-366页

作者：肖国强向敬成西南师范大学电教系电子科技大学

本文根据机载雷达的杂波谱特性，针对三毫米波无人机载雷达，提出一种在距离－多普勒平面抑制主杂波的方法，并对其基本原理进行了详细的论述．通过计算机模拟和对实际系统测试的结果表明，该方法应用于无人机载毫米波脉冲雷达是可行的．

关键词：机械脉冲雷达杂波抑制动目标检测无人机

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PHUI-GA: GPU-based efficiency evolutionary algorithm for mining high utility itemsets

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Journal of Systems Engineering and Electronics 2024年第4期35卷 965-975页

作者： JIANG Haipeng WU guoqing SUN Mengdan LI Feng SUN Yunfei FANG Wei Jiangsu Provincial Engineering Laboratory of Pattern Recognition and Computational Intelligence Department of Computer Science and TechnologyJiangnan UniversityWuxi 214122China China Ship Scientific Research Center Wuxi 214082China Taihu Laboratory of Deepsea Technological Science Wuxi 214082China Department of Mathematics Nanjing UniversityNanjing 210023China

Evolutionary algorithms(EAs)have been used in high utility itemset mining(HUIM)to address the problem of discover-ing high utility itemsets(HUIs)in the exponential search *** have good running and mining performance,but they still require huge computational resource and may miss many *** to the good combination of EA and graphics processing unit(GPU),we propose a parallel genetic algorithm(GA)based on the platform of GPU for mining HUIM(PHUI-GA).The evolution steps with improvements are performed in central processing unit(CPU)and the CPU intensive steps are sent to GPU to eva-luate with multi-threaded *** show that the mining performance of PHUI-GA outperforms the existing *** mining 90%HUIs,the PHUI-GA is up to 188 times better than the existing EAs and up to 36 times better than the CPU parallel approach.

关键词： high utility itemset mining(HUIM) graphics process-ing unit(GPU)parallel genetic algorithm(GA) mining perfor-mance

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A comprehensive analysis of DAC-SDC FPGA low power object detection challenge

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Science China(Information Sciences) 2024年第8期67卷 300-320页

作者： Jingwei ZHANG guoqing LI Meng ZHANG Xinye CAO Yu ZHANG Xiang LI Ziyang CHEN Jun YANG School of Electronics Science and Engineering Southeast University

The lower power object detection challenge(LPODC) at the IEEE/ACM Design Automation Conference is a premier contest in low-power object detection and algorithm(software)-hardware co-design for edge artificial intelligence, which has been a success in the past five years. LPODC focused on designing and implementing novel algorithms on the edge platform for object detection in images taken from unmanned aerial vehicles(UAVs), which attracted hundreds of teams from dozens of countries to participate. Our team SEUer has been participating in this competition for three consecutive years from 2020 to 2022 and obtained sixth place respectively in 2020 and 2021. Recently, we achieved the championship in 2022. In this paper, we presented the LPODC for UAV object detection from 2018 to 2022, including the dataset, hardware platform,and evaluation method. In addition, we also introduced and discussed the details of methods proposed by each year's top three teams from 2018 to 2022 in terms of network, accuracy, quantization method, hardware performance, and total score. Additionally, we conducted an in-depth analysis of the selected entries and results, along with summarizing representative methodologies. This analysis serves as a valuable practical resource for researchers and engineers in deploying the UAV application on edge platforms and enhancing its feasibility and reliability. According to the analysis and discussion, it becomes evident that the adoption of a hardware-algorithm co-design approach is paramount in the context of tiny machine learning(TinyML).This approach surpasses the mere optimization of software and hardware as separate entities, proving to be essential for achieving optimal performance and efficiency in TinyML applications.

关键词： tiny machine learning object detection convolutional neural networks algorithm-hardware co-design low power field programmable gate array

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