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Tungsten chalcogenides as anodes for potassium-ion batteries

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Tungsten 2024年第2期6卷 278-292页

作者： Yu-han Wu Wei-Hao Xia Yun-Zhuo Liu Peng-Fei Wang Yu-hang Zhang jin-Ru Huang Yang Xu De-Ping Li Li-jie Ci School of Environmental and Chemical Engineering Shenyang University of TechnologyShenyang 110870China Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) Nankai UniversityTianjin 300071China State Key Laboratory of Advanced Welding and joining School of Materials Science and EngineeringHarbin Institute of Technology(Shenzhen)Shenzhen 518055China Department of Chemistry University College LondonLondon WC1H 0AJUnited Kingdom

Potassium-ion batteries(PIBs)by virtue of their strong cost competitiveness and similar electrochemical properties to lithiumion batteries have been deemed to be a promising electrochemical energy storage *** promote the application in the commercial market,developing electrode materials with high specifi c capacities,superior cycling stability,and reliable safety is of great *** materials as an important component of PIBs play a decisive role,among which twodimensional transition metal chalcogenides(2D TMCs)have attracted wide attention owing to their unique material and electrochemical *** the 2D TMCs’family,molybdenum chalcogenides as fl agship are the most studied materials and demonstrated the potential as *** the deepening of research on 2D TMCs,another shining member that possesses similar properties to molybdenum chalcogenides,tungsten chalcogenides(WS_(2),WSe_(2),and WTe_(2)),has aroused tremendous *** many inspiring results,various challenges remain to be further addressed;meanwhile,some results are still unclear and ***,this review fi rst introduces their material properties and electrochemical storage ***,we systematically overview the research progress and put forward promoting improvement ***,challenges and opportunities that would be future research directions are discussed.

关键词： Electrochemical energy storage Potassium-ion batteries Anodes Tungsten chalcogenides

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市域快轨梯形轨枕无砟轨道在线实测及分析

都市快轨交通 2024年第1期37卷 114-119页

作者：申琼玉韩冬东董振升俞泉瑜徐飞虎安境迩(上海)科技有限公司上海200030 铁科检测有限公司北京100081

总结分析2023年在国家铁道试验中心环行线完成的最高时速220km/h条件下,市域快轨梯形轨枕无砟轨道相对于普通有砟轨道的安全性、平稳性及减振效果等测试方案及测试结果。测试列车为8辆编组CRH380aj综合检测车,测试指标包括:脱轨系数、... 详细信息

总结分析2023年在国家铁道试验中心环行线完成的最高时速220km/h条件下,市域快轨梯形轨枕无砟轨道相对于普通有砟轨道的安全性、平稳性及减振效果等测试方案及测试结果。测试列车为8辆编组CRH380aj综合检测车,测试指标包括:脱轨系数、轮重减载率、轮轴横向力等安全性及稳定性指标,钢轨及轨枕垂、横向动态位移等变形指标,钢轨垂、横向振动加速度等振动特性指标,以及距线路中心线3.5 m处路基表面的减振效果等。测试结果表明:市域快轨梯形轨枕无砟轨道的各项指标均低于相关规范标准限值,且与有砟轨道相近,表明市域快轨梯形轨枕在安全性、稳定性及钢轨振动特性方面可满足220 km/h速度级应用要求;市域快轨梯形轨枕无砟轨道相对于普通有砟轨道的减振效果按不同计权方式分别为3.3~5.1 dB、4.4~6.8 dB。本次测试成果可为市域快轨及城际铁路轨道减振技术应用提供借鉴与参考。

关键词：市域快轨梯形轨枕安全性稳定性减振效果

Kinetic Behavior of Aggregation-Exchange Growth Process with Catalyzed-Birth

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Communications in Theoretical Physics 2007年第3期47卷 479-486页

作者： han An-jia CHEN Yu LIN Zhen-Quan KE jian-Hong Department of Physics Wenzhou University Wenzhou 325027 China

We propose an aggregation model of a two-species system to mimic the growth of cities＇ population and assets, in which irreversible coagulation reactions and exchange reactions occur between any two aggregates of the same species, and the monomer-birth reactions of one species occur by the catalysis Of the other species. In the case with population-catalyzed birth of assets, the rate kernel of an asset aggregate Bκ of size k grows to become an aggregate Bκ＋1 through a monomer-birth catalyzed by a population aggregate aj of size j is j（κ,j） = jkjλ. And in mutually catalyzed birth model, the birth rate kernels of population and assets are H（k,j）=Hkjη and j（k,j） = jkjλ, respectively. The kinetics of the system is investigated based on the mean-field theory. In the model of population-catalyzed birth of aseets, the long-time asymptotic behavior of the assets aggregate size distribution obeys the conventional or modified scaling form. In mutually catalyzed birth system, the asymptotic behaviors of population and assets obey the conventional scaling form in the case of η=λ =0, and they obey the modified scaling form in the case of η=0, λ=1. In the case of η = λ= 1, the total mass of population aggregates and that of asset aggregates both grow much faster than those in population-catalyzed birth of assets model, and they approaches to infinite values in finite time.

关键词： kinetic behvavior aggregation-exchange growth catalyzed-birth scaling law rate equations

Spatially Bandgap-Graded Mo S2（1-x）Se2x Homojunctions for Self-Powered Visible–Near-Infrared Phototransistors

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Nano-Micro Letters 2020年第2期12卷 185-198页

作者： Hao Xu juntong Zhu Guifu Zou Wei Liu Xiao Li Caihong Li Gyeong Hee Ryu Wenshuo Xu Xiaoyu han Zhengxiao Guo jamie HWarner jiang Wu Huiyun Liu Department of Electronic and Electrical Engineering University College LondonTorrington PlaceLondon WC1E 7JEUK School of Energy Soochow Institute for Energy and Materials Innovationsand Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu ProvinceSoochow UniversitySuzhou 215006People’s Republic of China London Centre for Nanotechnology University College LondonLondon WC1H 0AHUK Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054People’s Republic of China Department of Materials University of OxfordParks RoadOxford OX13PHUK Department of Chemistry University College London20 Gordon StBloomsburyLondon WC1H 0AJUK Department of Chemistry The University of Hong KongPokfulam RoadHong KongPeople’s Republic of China Zhejiang Institute of Research and Innovation The University of Hong KongQingshan Lake SciTech CityHangzhouPeople’s Republic of China

Ternary transition metal dichalcogenide alloys with spatially graded bandgaps are an emerging class of two-dimensional materials with unique features,which opens up new potential for device ***,visible–near-infrared and self-powered phototransistors based on spatially bandgap-graded MoS2(1−x)Se2x alloys,synthesized by a simple and controllable chemical solution deposition method,are *** graded bandgaps,arising from the spatial grading of Se composition and thickness within a single domain,are tuned from 1.83 to 1.73 eV,leading to the formation of a homojunction with a builtin electric ***,a strong and sensitive gate-modulated photovoltaic effect is demonstrated,enabling the homojunction phototransistors at zero bias to deliver a photoresponsivity of 311 mA W−1,a specific detectivity up to^10^11 jones,and an on/off ratio up to^10^***,when illuminated by the lights ranging from 405 to 808 nm,the biased devices yield a champion photoresponsivity of 191.5 A W−1,a specific detectivity up to^1012 jones,a photoconductive gain of 10^6–10^7,and a photoresponsive time in the order of^50 *** results provide a simple and competitive solution to the bandgap engineering of two-dimensional materials for device applications without the need for p–n junctions.

关键词： Transition metal dichalcogenides Graded bandgaps Homojunctions Phototransistors Self-powered

Solution-processed CuOx as an efficient hole-extraction layer for inverted planar heterojunction perovskite solar cells

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Chinese Chemical Letters 2017年第1期28卷 13-18页

作者： Zhi-Kai Yu Wei-Fei Fu Wen-Qing Liu Zhong-Qiang Zhang Yu-jing Liu jie-Lin Yan Tao Ye Wei-Tao Yang han-Ying Li Hong-Zheng Chen State Key Laboratory of Silicon Materials MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 China

A solution-processed CuOx film has been successfully integrated as the hole-transporting layer（HTL） for inverted planar heterojunction perovskite solar cells（PVSCs）. The CuOx layer is fabricated by simply spin-coating a copper acetylacetonate（Cu（acac）2） chloroform solution onto ITO glass with high transparency in the visible range. The compact and pinhole-free perovskite film with large grain domains is grown on the CuOx film. The inverted PVSCs with the structure of ITO/CuOx/MAPbI3/PC（61）BM/ZnO/Al are fabricated and show a best PCE of 17.43% under standard AM 1.5G simulated solar irradiation with a VOCof 1.03 V, aj（SC） of 22.42 mA cm^（-2）, and a fill factor of 0.76, which is significantly higher and more stable than that fabricated from the often used hole-transporting material PEDOT：PSS（11.98%） under the same experimental conditions. The enhanced performance is attributed to the efficient hole extraction through the CuOx layer as well as the high-quality CH3NH3PbI3 films grown on the CuOx. Our results indicate that low-cost and solution-processed CuOx film is a promising HTL for high performance PVSCs with better stability.

关键词： CuOx Solution-processing Hole-transporting layer Perovskite solar cells Stable

Mechanism underlying the effect of Liujunzi decoction(六君子汤)on advanced-stage non-small cell lung cancer in patients after first-line chemotherapy

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journal of Traditional Chinese Medicine 2022年第1期42卷 108-115页

作者： XIN Xiaoli WANG Guodong han Ru jIANG Yi LIU Chang LIU Lingshuang XU Zhenye Department of Oncology Longhua Hospital affiliated to Shanghai University of Traditional Chinese MedicineShanghai 200032China Department of Orthopedics Longhua Hospital affiliated to Shanghai University of Traditional Chinese MedicineShanghai 20032China Department of human resources Shandong Academy of Occupational Health and Occupational MedicineJinan 250000China

OBjECTIVE:To further clarify the anticancer mechanisms of Liujunzi decoction(六君子汤)and provide possible targets for the treatment of advanced-stage nonsmall cell lung cancer(NSCLC)by re-analyzing differential gene expression profile of peripheral blood mononuclear cells(PBMCs)from Liujunzi decoctiontreated NSCLC patients receiving first-line ***:The PBMC gene expression microarray data set GSE61926 was retrieved from a high throughput gene expression *** expressed genes(DEGs)were screened by paired sample t-test and the multiple ratio *** ontology and Kyoto encyclopedia of genes and genomes(KEGG)pathway analyses were performed using the DAVID *** protein–protein interaction(PPI)network was constructed using interaction gene library retrieval tools and Cytoscape ***:A total of 162 DEGs were identified,with 67 upregulated genes and 95 downregulated *** functional distribution of Gene Oncology(GO)genes showed that DEGs were mostly concentrated in extracellular regions,calcium ion binding,and transcriptase *** pathway analysis showed that cytokine–cytokine receptor interactions were significantly *** network analysis screened out the top 10 central protein-coding genes with the highest nodal degree:IL2,PIWIL4,DICER1,PIWIL2,SAA1,XCL1,IL22RA1,ARHGAP11A,DCP1A,and *** them,the central protein-coding gene with the highest node degree was *** addition,the central protein-coding genes with high node degrees and high molecular complex detection(MCODE)scores were PIWIL4,DICER1,PIWIL2,and DCP1A,all of which are related to tumor ***:One signaling pathway and 10 central protein-coding genes related to anticancer mechanisms were screened by re-analysis of GSE61926 ***2,PIWIL4,DICER1,PIWIL2,and DCP1 A may have important roles in the mechanism of Liujunzi decoction treatment against *** results suggest that the anticancer mechanism of Liujunzi decoction ma

关键词： carcinoma non-small-cell lung antineoplastic agents computational biology RNA small interfering Liujunzi decoction

Compressibility of Mercury's dayside magnetosphere

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Compressibility of Mercury's dayside magnetosphere

Mercury's three-dimensional asymmetric magnetopause

中国科学院地质与地球物理研究所2015年度（第15届）学术年会

作者： j.Zhong W.X.Wan Y.Wei j.A.Slavin j.M.Raines Z.j.Rong L.H.Chai X.H.han Key Laboratory of Earth and Planetary Physics Institute of Geology and GeophysicsChinese Academy of Sciences CAS Key Laboratory of Geospace Environment University of Science and Technology of China Department of Atmospheric Oceanic and Space SciencesUniversity of Michigan

The Mercury is experiencing significant variations of solar wind forcing along its large eccentric *** 12 Mercury years of data from Mercury Surface,Space ENvironment,GEochemistry,and Ranging,we demonstrate that Mercury’s distance from the Sun has a great effect on the size of the dayside magnetosphere that is much larger than the temporal *** mean solar wind standoff distance was found to be about 0.27 Mercury radii(R) closer to the Mercury at perihelion than at *** perihelion the subsolar magnetopause can be compressed below 1.2 R of .5% of the *** relationship between the average magnetopause standoff distance and heliocentric distance suggests that on average the effects of the erosion process appears to counter balance those of induction in Mercury’s interior at ***,at aphelion,where solar wind pressure is lower and Alfvénic Mach number is higher,the effects of induction appear dominant.

关键词： The compressibility of Mercury’s magnetosphere is higher than at Earth Subsolar magnetopause can be compressed below 1 2 RMat perihelion Effects of the erosion process counter balance those of induction currents at perihelion

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Mercury's three-dimensional asymmetric magnetopause

中国科学院地质与地球物理研究所2015年度（第15届）学术年会

作者： j.Zhong W.X.Wan j.A.Slavin Y.Wei R.L.Lin L.H.Chai j.M.Raines Z.j.Rong X.H.han Key Laboratory of Earth and Planetary Physics Institute of Geology and GeophysicsChinese Academy of Sciences Department of Atmospheric Oceanic and Space SciencesUniversity of Michigan Center for Space Science and Applied Research Chinese Academy of Sciences

Mercury’s magnetopause is unique in the solar system due to its relatively small size and its close proximity to the *** on 3 years of MErcury Surface,Space ENvironment,GEochemistry,and Ranging orbital Magnetometer and the Fast Imaging Plasma Spectrometer data,the mean magnetopause location was determined for a total of 5694 *** fit these magnetopause locations to a three-dimensional nonaxially symmetric magnetopause which includes an indentation for the cusp region that has been successfully applied to the *** model predicts that Mercury’s magnetopause is highly indented surrounding the cusp with central depth .64 R and large dayside *** dayside polar magnetopause dimension is,thus,smaller than the equatorial magnetopause *** sections of the dayside magnetopause in planes perpendicular to the Mercury-Sun line are prolate and elongated along the dawn-dusk *** contrast,the magnetopause downstream of the terminator plane is larger in the north-south than the east-west directions by a ratio of 2.6 RMto 2.2 RMat a distance of 1.5 RMdownstream of *** to the northward offset of the internal dipole,the model predicts that solar wind has direct access to the surface of Mercury at middle magnetic latitudes in the southern *** extremely high solar wind pressure conditions,the northern hemisphere middle magnetic latitudes may also be subject to direct solar wind impact.

关键词： Mercury’s magnetopause near-cusp indentation Magnetotail cross sections elongated in north-south direction Extreme solar wind pressure events were analyzed

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智能型接触器节能控制模块aj2-I

低压电器 2000年第3期 24-25,39页

作者：韩光熙北京海淀科友机电研究所 100080

新研制的aj2 I型智能接触器用控制模块具有延时闭合、节电和过流、过压、过热及三相不平衡等保护功能。本文介绍该模块的工作原理、主要功能和性能。

关键词：智能接触器控制模块节能保护功能 aj2-I型