检索结果-南通市图书馆

同方期刊数据库

在线全文

学校读者我要写书评

暂无评论

钠离子电池负极材料原位透射电镜研究

电子显微学报 2024年第3期43卷 371-389页

作者：陆佳宁张智高义华邹进华中科技大学物理学院&武汉光电国家研究中心湖北武汉430074 Materials Engineering&Centre for Microscopy and Microanalysis The University of QueenslandSt.LuciaQLD 4072Australia

近年来,由于地球上钠资源分布广泛和丰富,钠离子电池的研究引起了人们的极大兴趣。目前,钠离子电池仍面临着能量密度低、循环稳定性不理想等关键科学问题。钠离子电池存储性能的提高需要对其电极材料储钠微观机制的全面和精确的理解。... 详细信息

近年来,由于地球上钠资源分布广泛和丰富,钠离子电池的研究引起了人们的极大兴趣。目前,钠离子电池仍面临着能量密度低、循环稳定性不理想等关键科学问题。钠离子电池存储性能的提高需要对其电极材料储钠微观机制的全面和精确的理解。尽管研究者们已经开展了大量的原位透射电子显微学研究来揭示钠离子电池负极材料的储钠特性和微观机制,但是相关的综述鲜见报道。鉴于此,本文综述了近年来原位透射电子显微镜在研究钠离子电池负极材料储钠过程中材料的形貌、微观结构和化学成分等的演化与微观机理的研究进展,阐明了钠离子电池负极材料的组成/结构与钠离子电池电化学性能之间的构效关联。本综述旨在为高效钠离子电池负极材料的高效选择和合理设计提供参考。

关键词：钠离子电池负极材料原位研究透射电镜

在线全文

学校读者我要写书评

暂无评论

变电站通风空调系统设计分析

科技资讯 2024年第7期22卷 62-64页

作者：刘虹陈全杰卫璐刘睿凝高艺华国网陕西省电力公司经济技术研究院陕西西安710065

首先,概述了变电站通风空调系统的相关概念及其设计重要性。其次,阐述了变电站通风空调系统设计的基本原则,包括节能环保、安全可靠、经济性及可操作性。再次,介绍了变电站通风空调系统的设计方法,包括负荷计算、空调设备选型、风管设... 详细信息

首先,概述了变电站通风空调系统的相关概念及其设计重要性。其次,阐述了变电站通风空调系统设计的基本原则,包括节能环保、安全可靠、经济性及可操作性。再次,介绍了变电站通风空调系统的设计方法,包括负荷计算、空调设备选型、风管设计及控制系统设计。从次,探讨了变电站通风空调系统的优化设计,包括气流组织、设备配置及控制系统的优化。最后,通过实例分析说明了变电站通风空调系统设计的具体应用。

关键词：变电站通风空调系统设计原则设计方法

3D Porous MXene Aerogel through Gas Foaming for Multifunctional PressureSensor

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Research 2022年第4期2022卷 321-331页

作者： Yongfa Cheng Li Li Zunyu Liu Shuwen Yan Feng Cheng Yang Yue Shuangfeng Jia Jianbo Wang yihua gao Luying Li Wuhan National Laboratory for Optoelectronics(WNLO) Huazhong University of Science and Technology(HUST)Luoyu Road 1037Wuhan 430074China Information Materials and Intlligent Sensing Laboratory of Anhui Province Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of EducationInstitutes of Physical Science and Information TechnologyAnhui UniversityHefei 230601China School of Physics and Technology Center for Electron MicroscopyMOE Key Laboratory of Artificial Micro-and Nano-Structures and the Institute for Advanced StudiesWuhan UniversityWuhan 430072China

The development of smart wearable electronic devices puts forward higher requirements for future flexible electronics. The design of highly sensitive and high-performance flexible pressure sensors plays an important role in promoting the development of flexible electronic devices. Recently, MXenes with excellent properties have shown great potential in the field of flexible electronics. However, the easy-stacking inclination of nanomaterials limits the development of their excellent properties and the performance improvement of related pressure sensors. Traditional methods for constructing 3D porous structures have the disadvantages of complexity, long period, and difficulty of scalability. Here, the gas foaming strategy is adopted to rapidly construct 3D porous MXene aerogels. Combining the excellent surface properties of MXenes with the porous structure of aerogel, the prepared MXene aerogels are successfully used in high-performance multifunctional flexible pressure sensors with high sensitivity (306 kPa^(-1)), wide detection range (2.3 Pa to 87.3 kPa), fast response time (35 ms), and ultrastability (>20,000 cycles), as well as self-healing, waterproof, cold-resistant, and heat-resistant capabilities. MXene aerogel pressure sensors show great potential in harsh environment detection, behavior monitoring, equipment recovery, pressure array identification, remote monitoring, and human-computer interaction applications.

关键词： MXene porous Porous

Ti_(3)C_(2)T_(x)-TiSe_(2) analogous heterostructure for flexible zinc ion battery

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 Materials Science & Technology 2023年第19期150卷 225-232页

作者： Li Wen Junjie Shi Qixiang Zhang Fei Wang Siliang Wang Shaojun Zhang Qiang Wang Ke Mao Fei Long yihua gao Center for Nanoscale Characterization&Devices(CNCD) School of Physics and Wuhan National Laboratory for Optoelectronics(WNLO)Huazhong University of Science and Technology(HUST)Wuhan 430074China Information Materials and Intelligent Sensing Laboratory of Anhui Province School of Integrated CircuitsAnhui UniversityHefei 230601China College of Materials Science and Engineering Guangxi Key Laboratory of Optical and Electronic Materials and DevicesGuilin University of TechnologyGuilin 541004China

Exploring zinc-free anode materials is one of the effective strategies to get the zinc dendrites problem of flexible zinc ion battery(ZIB)*** this work,an analogous heterostructure(AHS)is constructed from the excellent MXene(Ti_(3)C_(2)T_(x))and TiSe_(2) *** AHS not only possesses numerous diffu-sion paths and Zn^(2+)storage sites but also possesses a stable conductive network to accelerate charge transfer in the *** a collaborative advantage,electrochemical measurement results show that MXene/TiSe_(2) electrodes display an excellent specific capacity of 177.9 mAh g^(-1) at 0.10 A g^(-1) and a long-term cycling stability of 77.4%capacity retention after 400 *** computations further demon-strate the excellent performance of MXene/TiSe_(2) electrodes including desirable electronic conductivity and low Zn^(2+)migration *** assembled flexible ZIB not only delivers a good specific capacity of 42.2μAh cm^(-2) at 0.20 mA cm^(-2) and a competitive energy density of 37.4μWh cm^(-2) but also exhibits excellent flexibility and ***,after 400 cycles at 0.60 A g^(-1),flexible ZIB shows a capacity retention of 73.8%.This work gives a successful attempt to design 2D layered materials as Zn metal-free anode for flexible ZIB.

关键词： Flexible zinc ion battery Analogous heterostructure Zinc dendrite Zinc free metal anode MXene flakes TiSe_(2)nanosheets

A Model for Predicting the Erosion Rate Induced by the Use of a Selective Catalytic Reduction Denitrification Technology in Cement Kilns Flue Gas

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Fluid Dynamics & Materials Processing 2023年第8期19卷 1997-2011页

作者： yihua gao Fuping Qian Yi Sun Yue Wu Shenghua Wu Jinli Lu Yunlong Han Naijin Huang School of Civil Engineering and Architecture Anhui University of TechnologyMa’anshan243032China School of Energy and Environment Anhui University of TechnologyMa’anshan243002China Anhui Weida Environment Protection Science&Technology Co. Ltd.Hefei230041China

Selective catalytic reduction(SCR)is a technology by which nitrogen oxides are converted with the aid of a catalyst into diatomic nitrogen and *** is known that the catalyst can be easily eroded if a cement kiln with a high-dust content is *** understand this process,numerical simulations have been carried out considering a single catalyst channel in order to study the collision and erosion of fly ash and catalysts at meso *** on a response surface methodology,the effects of five factors on the erosion rate have been studied,namely,the catalyst particle velocity,the particle size,the particle concentration,the incidence angle and the catalyst *** results show that the influence of particle velocity,particle size and particle concentration is statistically significant and the particle size and incidence angle have a significant effect on the erosion rate.A quadratic polynomial prediction model for the erosion rate of honeycomb catalysts in cement kiln SCR reactors is finally proposed to support the future optimization of these systems.

关键词： Cement kiln SCR denitrification catalyst erosion numerical simulation

MXene-enhanced environmentally stable organohydrogel ionic diode toward harvesting ultralow-frequency mechanical energy and moisture energy

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

SusMat 2023年第6期3卷 859-876页

作者： Jianyu Yin Nishuang Liu Peixue Jia Ziqi Ren Qixiang Zhang Wenzhong Lu Qianqian Yao Mingfang Deng yihua gao School of Physics&Wuhan National Laboratory for Optoelectronics(WNLO) Huazhong University of Science and Technology(HUST)WuhanChina

With the accelerating advancement of distributed sensors and portable electronic devices in the era of big data,harvesting energy from the surrounding environment to power electrical devices has become increasingly ***,most mechanical energy harvesters often require high operating frequencies to function ***,for practical applications,the survivability of devices in harsh operating environments is a vital issuewhich must be ***,the single-stimulus responsiveness limits their further applications in complex external ***,a pressure and moisture dual-responsive ionic diode consisting of two organohydrogels with opposite charges as an energy harvester is *** organohydrogel ionic diode utilizes the migration of cations and anions to form the depletion zone and followed by an enhancement of the built-in potential along the depletion zone as a result of mechanical stress or humidity,converting ultralow-frequency mechanical energy or moisture energy into electrical ***,this mechanism is further confirmed by the finite element *** the increased rectification ratio due to the introduction of MXene,the ionic diode exhibits a relatively large output current(∼10.10μA cm^(−2))and power density(∼0.10μW cm^(−2))at a mechanical pressure of 0.01 Hz,outperforming most currently available mechanical energy *** impressively,the incorporation of ethylene glycol provides the hydrogel ionic diode with excellent temperature tolerance and long-term environmental *** organohydrogel ionic diode can also be applied as a moisture-driven power generator and self-powered humidity *** study presents promising prospects for the efficient collection of renewable and sustainable energy and the practical application of hydrogel-based energy harvesters in extreme environments.

关键词： energy harvesting environmentally stable ionic diode organohydrogel ultralow frequency

An Air‑Rechargeable Zn Battery Enabled by Organic–Inorganic Hybrid Cathode

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano-Micro Letters 2023年第4期15卷 138-152页

作者： Junjie Shi Ke Mao Qixiang Zhang Zunyu Liu Fei Long Li Wen Yixin Hou Xinliang Li Yanan Ma Yang Yue Luying Li Chunyi Zhi yihua gao Wuhan National Laboratory for Optoelectronics(WNLO)and School of Physics Center for Nanoscale Characterization&Devices(CNCD)Huazhong University of Science and Technology(HUST)Wuhan 430074People’s Republic of China Guangxi Key Laboratory of Optical and Electronic Materials and Devices College of Materials Science and EngineeringGuilin University of TechnologyGuilin 541004People’s Republic of China Hong Kong Center for Cerebro-Cardiovascular Health Engineering Hong Kong SAR 999077People’s Republic of China Hubei Key Laboratory of Critical Materials of New Energy Vehicles and School of Mathematics Physics and Optoelectronic EngineeringHubei University of Automotive TechnologyShiyan 442002People’s Republic of China Information Materials and Intelligent Sensing Laboratory of Anhui Province Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of EducationInstitutes of Physical Science and Information TechnologyAnhui UniversityHefei 230601People’s Republic of China

Self-charging power systems collecting energy harvesting technology and batteries are attracting extensive *** solve the disadvantages of the traditional integrated system,such as highly dependent on energy supply and complex structure,an airrechargeable Zn battery based on MoS_(2)/PANI cathode is *** from the excellent conductivity desolvation shield of PANI,the MoS_(2)/PANI cathode exhibits ultra-high capacity(304.98 mAh g^(−1) in N_(2) and 351.25 mAh g^(−1) in air).In particular,this battery has the ability to collect,convert and store energy simultaneously by an airrechargeable process of the spontaneous redox reaction between the discharged cathode and O2 from *** air-rechargeable Zn batteries display a high open-circuit voltage(1.15 V),an unforgettable discharge capacity(316.09 mAh g^(−1) and the air-rechargeable depth is 89.99%)and good air-recharging stability(291.22 mAh g^(−1) after 50 air recharging/galvanostatic current discharge cycle).Most importantly,both our quasi-solid zinc ion batteries and batteries modules have excellent performance and *** work will provide a promising research direction for the material design and device assembly of the next-generation self-powered system.

关键词： Air-rechargeable MoS_(2)/PANI Cathode Desolvation shield Energy storage mechanism Zn batteries module

Study of the growth mechanism of a self‑assembled and ordered multi‑dimensional heterojunction at atomic resolution

在线全文

学校读者我要写书评

暂无评论

Frontiers of Optoelectronics 2023年第4期16卷 37-48页

作者： Zunyu Liu Chaoyu Zhao Shuangfeng Jia Weiwei Meng Pei Li Shuwen Yan Yongfa Cheng Jinshui Miao Lei Zhang yihua gao Jianbo Wang Luying Li Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials Hubei Collaborative Innovation Center for Advanced Organic Chemical MaterialsSchool of Materials Science and EngineeringHubei UniversityWuhan 430061China Center for Electron Microscopy MOE Key Laboratory of Artificial Micro-and Nano-Structures and the Institute for Advanced StudiesSchool of Physics and TechnologyWuhan UniversityWuhan 430072China State Key Laboratory of Infrared Physics Shanghai Institute of Technical PhysicsChinese Academy of SciencesShanghai 200083China

Multi-dimensional heterojunction materials have attracted much attention due to their intriguing properties,such as high efciency,wide band gap regulation,low dimensional limitation,versatility and *** further improve the performance of materials,researchers have combined materials with various dimensions using a wide variety of ***,research on growth mechanism of such composite materials is still *** this paper,the growth mechanism of multidimensional heterojunction composite material is studied using quasi-two-dimensional(quasi-2D)antimonene and quasione-dimensional(quasi-1D)antimony sulfde as *** are synthesized by a simple thermal injection *** is observed that the consequent nanorods are oriented along six-fold symmetric directions on the nanoplate,forming ordered quasi-1D/quasi-2D *** transmission electron microscopy(TEM)characterizations confrm the chemical information and reveal orientational relationship between Sb2S3 nanorods and the Sb nanoplate as *** density functional theory calculations indicate that interfacial binding energy is the primary deciding factor for the self-assembly of ordered *** details may fll the gaps in the research on multi-dimensional composite materials with ordered structures,and promote their future versatile applications.

关键词： Multi-dimensional composite materials Ordered heterostructures-Self-assembly Growth mechanism

Improved Dota2 Lineup Recommendation Model Based on a Bidirectional LSTM

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Tsinghua Science and Technology 2020年第6期25卷 712-720页

作者： Lei Zhang Chenbo Xu yihua gao Yi Han Xiaojiang Du Zhihong Tian Henan Key Laboratory of Big Data Analysis and Processing Kaifeng 457004China Institute of Data and Knowledge Engineering Henan UniversityKaifeng 475004.China National Internet Emergency Center Zhengzhou 450000China Department of Computer and Information Sciences Temple UniversityPhiladelphiaPA 19122-6008USA Cyberspace Institute of Advanced Technology Guangzhou UniversityGuangzhou 510006China

In recent years,e-sports has rapidly developed,and the industry has produced large amounts of data with specifications,and these data are easily to be *** to the above characteristics,data mining and deep learning methods can be used to guide players and develop appropriate strategies to win *** one of the world’s most famous e-sports events,Dota2 has a large audience base and a good game system.A victory in a game is often associated with a hero’s match,and players are often unable to pick the best lineup to *** solve this problem,in this paper,we present an improved bidirectional Long Short-Term Memory(LSTM)neural network model for Dota2 lineup *** model uses the Continuous Bag Of Words(CBOW)model in the Word2 vec model to generate hero *** CBOW model can predict the context of a word in a ***,a word is transformed into a hero,a sentence into a lineup,and a word vector into a hero vector,the model applied in this article recommends the last hero according to the first four heroes selected first,thereby solving a series of recommendation problems.

关键词： Word2vec mutiplayer online battle arena games Continuous Bag Of Words(CBOW)model Long Short-Term Memory(LSTM)