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MXene-based all-solid flexible electrochromic microsupercapacitor

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Microsystems & Nanoengineering 2024年第3期10卷 347-355页

作者： Shanlu Guo Ruihe zhu Jingwei Chen weilin liu Yuxiang Zhang Jianmin li Haizeng li college of electronic and Optical engineering&college of Flexible electronics(Future technology) Nanjing University of Posts and TelecommunicationsNanjing 210023China School of Materials Science and engineering Ocean University of ChinaQingdao 266100China Optics and Thermal Radiation Research Center Institute of Frontier and Interdisciplinary ScienceShandong UniversityQingdao 266237China Shenzhen Research Institute of Shandong university Shenzhen 518000China State Key Laboratory of Featured Metal Materials and life Cycle Safety for Composite Structures Guangxi UniversityNanning 530004China

With the increasing demand for multifunctional optoelectronic devices,flexible electrochromic energy storage devices are being widely recognized as promising platforms for diverse ***,simultaneously achieving high capacitance,fast color switching and large optical modulation range is very *** this study,the MXenebased flexible in-plane microsupercapacitor was fabricated via a mask-assisted spray coating *** adding electrochromic ethyl viologen dibromide(EVB)into the electrolyte,the device showed a reversible color change during the charge/discharge *** to the high electronic conductivity of the MXene flakes and the fast response kinetics of EVB,the device exhibited a fast coloration/bleaching time of 2.6 s/2.5 s,a large optical contrast of 60%,and exceptional coloration *** addition,EVB acted as a redox additive to reinforce the energy storage performance;as a result,the working voltage window of the Ti_(3)C_(2)-based symmetric aqueous microsupercapacitor was extended to 1 ***,the device had a high areal capacitance of 12.5 mF cm^(−2)with superior flexibility and mechanical stability and showed almost 100%capacitance retention after 100 bending *** as-prepared device has significant potential for a wide range of applications in flexible and wearable electronics,particularly in the fields of camouflage,anticounterfeiting,and displays.

关键词： capacitance kinetics exceptional

NbN quantum dots anchored hollow carbon nanorods as efficient polysulfide immobilizer and lithium stabilizer for li-S full batteries

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Journal of Energy Chemistry 2024年第1期88卷 260-271,I0007页

作者： Fei Ma zhuo Chen Katam Srinivas Ziheng Zhang Yu Wu Dawei liu hesheng Yu Yue Wang Xinsheng li Ming-qiang zhu Qi Wu Yuanfu Chen School of Integrated Circuit Science and engineering and State Key Laboratory of Electronic Thin Films and Integrated DevicesUniversity of Electronic Science and TechnologyChengdu 610054SichuanChina college of Science and Institute of Oxygen Supply Center of Tibetan Studies(Everest Research Institute)Tibet UniversityLhasa 850000TibetChina college of mechanical and electronic engineering Northwest A&F UniversityXianyang 712100ShaanxiChina

The shuttle effect of lithium polysulfides(liPSs)and uncontrollable lithium dendrite growth seriously hinder the practical application of lithium-sulfur(li-S)*** simultaneously address such issues,monodispersed Nb N quantum dots anchored on nitrogen-doped hollow carbon nanorods(NbN@NHCR)are elaborately developed as efficient li PSs immobilizer and li stabilizer for high-performance li-S full *** functional theory(DFT)calculations and experimental characterizations demonstrate that the sulfiphilic and lithiophilic NbN@NHCR hybrid can not only efficiently immobilize the soluble li PSs and facilitate diffusion-conversion kinetics for alleviating the shuttling effect,but also homogenize the distribution of li+ions and regulate uniform li deposition for suppressing li-dendrite *** a result,the assembled li-S full batteries(NbN@NHCR-S||Nb N@NHCR-li)deliver excellent long-term cycling stability with a low decay rate of 0.031%per cycle over 1000 cycles at high rate of 2 *** at a high S loading of 5.8 mg cm^(-2)and a low electrolyte/sulfur ratio of 5.2μL mg^(-1),a large areal capacity of 6.2 mA h cm^(-2)can be achieved in li-S pouch cell at 0.1 *** study provides a new perspective via designing a dual-functional sulfiphilic and lithiophilic hybrid to address serious issues of the shuttle effect of S cathode and dendrite growth of li anode.

关键词： Dual-functional host NbN quantum dots Shuttle effect Dendrite-free li anode li-S full batteries

复合纳米碳化硅包芯线球墨铸铁孕育及其效果分析

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铸造 2018年第2期67卷 167-170页

作者：刘美多李聪朱兴洋吴强吴纪增吴玉彬巫瑞智崔琳侯乐干黑龙江工业学院环境工程系黑龙江鸡西158100 哈尔滨工程大学材料科学与化学工程学院黑龙江哈尔滨150001 哈尔滨铸博机器人有限公司黑龙江哈尔滨150078 哈尔滨科德威冶金股份有限公司黑龙江哈尔滨150078 黑龙江工程学院土木与建筑工程学院黑龙江哈尔滨150050

采用行星球磨工艺将纳米尺度的SiC粉体与微米尺度的SiC粉体进行复合制备复合纳米碳化硅铸铁用包芯线孕育剂,采用喂线法进行球墨铸铁孕育处理。采用XRD、SEM分析孕育剂的物相构成和显微形貌,采用金相、电子拉伸试验机、冲击试验机分析孕... 详细信息

采用行星球磨工艺将纳米尺度的SiC粉体与微米尺度的SiC粉体进行复合制备复合纳米碳化硅铸铁用包芯线孕育剂,采用喂线法进行球墨铸铁孕育处理。采用XRD、SEM分析孕育剂的物相构成和显微形貌,采用金相、电子拉伸试验机、冲击试验机分析孕育后球墨铸铁组织及性能。试验结果表明:复合纳米SiC孕育剂的孕育效果优于纯纳米SiC和纯微米SiC孕育剂;复合纳米SiC孕育剂孕育后,球墨颗粒数增加,尺寸减小,球化率提高,力学性能显著提高。

关键词：纳米碳化硅包芯线孕育球墨铸铁

Facilely prepared layer-by-layer graphene membrane-based pressure sensor with high sensitivity and stability for smart wearable devices

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Journal of Materials Science & technology 2020年第10期42卷 241-247页

作者： Tao liu Caizhen zhu wei Wu Kai-Ning liao Xianjing Gong Qijun Sun Robert K.Y.li Department of Materials Science and engineering City University of Hong KongTat Chee AvenueKowloonHong KongChina Institute of Low-dimensional Materials Genome Initiative College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhen518060China national engineering Research Center of Novel Equipment for Polymer Processing Key Laboratory of Polymer Processing Engineering of Ministry of EducationSchool of Mechanical and Automotive EngineeringSouth China University of TechnologyGuangzhou510640China State Key Laboratory of Organic-Inorganic Composites College of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing100029China

With the prosperous development of artificial intelligence,medical diagnosis and electronic skins,wearable electronic devices have drawn much attention in our daily *** pressure sensors based on carbon materials with ultrahigh sensitivity,especially in a large pressure range regime are highly required in wearable *** this work,graphene membrane with a layer-by-layer structure has been successfully fabricated via a facile self-assembly and air-drying(SAAD)*** the SAAD process,air-drying the self-assembled graphene hydrogels contributes to the uniform and compact layer structure in the obtained *** to the excellent mechanical and electrical properties of graphene,the pressure sensor constructed by several layers of membranes exhibits high sensitivity(52.36 kPa……-1)and repeatability(short response and recovery time)in the loading pressure range of 0–50 *** with most reported graphene-related pressure sensors,our device shows better sensitivity and wider applied pressure ***’s more,we demonstrate it shows desired results in wearable applications for pulse monitoring,breathing detection as well as different intense motion recording such as walk,run and ***’s hoped that the facilely prepared layer-by-layer graphene membrane-based pressure sensors will have more potential to be used for smart wearable devices in the future.

关键词： Graphene membrane Self-assembly High sensitivity Wearable devices Human motions

基于预连接镍链的高应变敏感度动态可调电磁干扰屏蔽弹性体

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Science china Materials 2024年第2期67卷 629-641页

作者：卞敬周兴成周翔马林峰朱先军李建民刘淑娟赵强 college of electronic and Optical engineering&college of Flexible electronics(Future technology) National and Local Joint Engineering Laboratory of RF Integration and Micro-Assembly TechnologyNanjing University of Posts and TelecommunicationsNanjing 210023China State Key Laboratory of Organic electronics and Information Displays&Jiangsu Key Laboratory for Biosensors Institute of Advanced Materials(IAM)Nanjing University of Posts&TelecommunicationsNanjing 210023China

具有动态可调电磁屏蔽性能的电磁干扰屏蔽材料备受关注,但其目前仍然存在制备复杂、厚度大、触发方式不便、调节范围窄等缺点.我们通过将尖刺镍微粒精确地分散到聚二甲基硅氧烷基体中形成预连接的链状结构,制备出了具有可开关电磁屏蔽... 详细信息

具有动态可调电磁屏蔽性能的电磁干扰屏蔽材料备受关注,但其目前仍然存在制备复杂、厚度大、触发方式不便、调节范围窄等缺点.我们通过将尖刺镍微粒精确地分散到聚二甲基硅氧烷基体中形成预连接的链状结构,制备出了具有可开关电磁屏蔽性能的弹性体材料.弹性体在机械拉伸和释放过程中表现出连续和可逆的电磁干扰屏蔽性能.原始弹性体具有良好的阻抗匹配和低介电损耗,允许大部分电磁波通过.拉伸使预连接的短链彼此接触,在内部形成大量的微尺度导电网络,显著增强了电导损耗能力,实现了较强的电磁干扰屏蔽能力.此外,我们通过无线应变传感系统验证了智能电磁干扰屏蔽弹性体的应用潜力,证明了可穿戴智能电磁干扰屏蔽精确监测人体运动的可能性.

关键词： adjustable electromagnetic interference shielding conductive elastomer electromagnetic sensing negative piezoresistivity

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高温热重生光纤布拉格光栅制备及其性能研究

光子学报 2020年第7期49卷 162-169页

作者：刘日照陈明郑加金刘力朱永刚陈焕权韦玮南京邮电大学电子与光学工程、微电子学院南京210046 江苏亨通光电股份有限公司江苏苏州215234

通过高温(850~950℃)退火方法使光纤布拉格光栅在高温擦除后重新生长形成热重生光纤光栅,其能够在大于1 000℃以上的高温环境中稳定工作,但经高温退火处理后的热重生光纤光栅机械强度较一般光纤布拉格光栅显著下降.本文通过采用单模石... 详细信息

通过高温(850~950℃)退火方法使光纤布拉格光栅在高温擦除后重新生长形成热重生光纤光栅,其能够在大于1 000℃以上的高温环境中稳定工作,但经高温退火处理后的热重生光纤光栅机械强度较一般光纤布拉格光栅显著下降.本文通过采用单模石英光纤进行实验,对光纤光栅的轴向应力和光纤光栅中石英分子组分的变化进行研究分析.结果表明,经过高温热退火后的热重生光纤光栅与未退火的光纤布拉格光栅相比,纤芯处压应力减少了80 MPa,远离纤芯的包层处拉伸应力由22 MPa逐渐减小;同时,随着热退火气氛中氧含量的增加,退火后生成的热重生光纤光栅SiO2逐渐增加,占比从52.99%上升至69.92%.虽然SiO2具有较高的密度,其机械强度大于Si2O3,但热退火后的热重生光纤光栅脆性仍增大,故推论:组分变化对热重生光纤光栅脆性增大无明显影响,脆性增大主要原因为高温导致的应力松弛.本文研究为提高热重生光纤光栅的机械性能,解决其脆性问题提供了可靠的理论与实验依据.

关键词：光纤传感光纤布拉格光栅退火热重生光纤光栅应力组分

复合式激光通信系统多光轴一致性温度影响研究

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光学学报 2022年第18期42卷 57-65页

作者：李响刘赫高亮安岩宋延嵩孙梓庭朱永奇席文强周晨长春理工大学光电工程学院吉林长春130022 长春理工大学机电工程学院吉林长春130022 长春理工大学空间光电技术国家与地方联合工程研究中心吉林长春130022

包含章动、自适应光学以及精跟踪功能的复合激光通信系统的光路复杂,环境温度改变时多光轴的一致性较难保证,导致波前校正基准、跟踪零位偏移,严重影响通信链路的建立。为解决以上问题,对系统进行了一体化设计,提出了针对多光轴复杂光... 详细信息

包含章动、自适应光学以及精跟踪功能的复合激光通信系统的光路复杂,环境温度改变时多光轴的一致性较难保证,导致波前校正基准、跟踪零位偏移,严重影响通信链路的建立。为解决以上问题,对系统进行了一体化设计,提出了针对多光轴复杂光路的光轴一致性的分析方法,建立了多反射镜误差传递模型。经过计算可得:在10~30℃的环境温度范围内,精跟踪支路与通信支路间、通信发射支路与通信接收支路间、精跟踪支路与自适应光学支路间同轴度误差优于143.77μrad、27.38μrad和131.66μrad。在实验室中进行30℃温度拉偏实验,实验结果表明:光轴实际偏转角度与仿真结果之间的误差优于13%。随后进行了楼宇间的1 km激光通信实验(环境温度28℃),成功实现稳定通信。

关键词：光通信多光轴一致性仿真分析刚体位移误差传递模型

The Tianlai Cylinder Pathfinder array: System functions and basic performance analysis

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Science china(Physics,Mechanics & Astronomy) 2020年第12期63卷 2-28页

作者： JiXia li ShiFan Zuo FengQuan Wu YouGang Wang JuYong Zhang ShiJie Sun Yidong Xu ZiJie Yu Reza Ansari YiChao li Albert Stebbins Peter Timbie YanPing Cong JingChao Geng Jie Hao QiZhi Huang JianBin li Rui li dongHao liu YingFeng liu Tao liu John PMarriner ChenHui Niu Ue-li Pen Jeffery BPeterson Huli Shi lin Shu YaFang Song HaiJun Tian GuiSong Wang QunXiong Wang Rongli Wang weiXia Wang Xin Wang KaiFeng Yu Jiao Zhang BoQin zhu JiaLu zhu XueLei Chen national Astronomical Observatories Chinese Academy of SciencesBeijing 100101China School of Astronomy and Space Science University of Chinese Academy of SciencesBeijing 100049China Center for Astrophysics and Department of Astronomy Tsinghua UniversityBeijing 100084China School of mechanical engineering Hangzhou Dianzi UniversityHangzhou 310018China IJC Lab CNRS/IN2P3&UniversitéParis-SaclayOrsay 91405France Department of Physics and Astronomy University of the Western CapeBelville 7535Republic of South Africa Fermi national Accelerator Laboratory Batavia IL 60510-5011USA Department of Physics University of Wisconsin MadisonMadison WI 53703USA The 54th Research Institute China Electronics Technology Group CorporationShijiazhuang 050051China Institute of Automation Chinese Academy of SciencesBeijing 100190China Xinjiang Astronomical Observatory Chinese Academy of SciencesUrumqi 830001China Canadian Institute for Theoretical Astrophysics University of TorontoToronto M5S 3H8Canada Department of Physics Carnegie Mellon UniversityPittsburgh PA 15213USA Center for Astronomy and Space Sciences China Three Gorges UniversityYichang 443002China School of Physics and Astronomy Sun Yat-sen UniversityGuangzhou 510297China college of Physics and electronic engineering Shanxi UniversityTaiyuan 030006China Center of High Energy Physics Peking UniversityBeijing 100871China

The Tianlai Cylinder Pathfinder is a radio interferometer array designed to test techniques for 21 cm intensity mapping in the post-reionization Universe,with the ultimate aim of mapping the large scale structure and measuring cosmological parameters such as the dark energy equation of *** of its three parallel cylinder reflectors is oriented in the north-south direction,and the array has a large field of *** the Earth rotates,the northern sky is observed by drift *** array is located in Hongliuxia,a radio-quiet site in Xinjiang,and saw its first light in September *** this first data analysis paper for the Tianlai cylinder array,we discuss the sub-system qualification tests,and present basic system performance obtained from preliminary analysis of the commissioning observations during *** show typical interferometric visibility data,from which we derive the actual beam profile in the east-west direction and the frequency band-pass *** describe also the calibration process to determine the complex gains for the array elements,either using bright astronomical point sources,or an artificial on site calibrator source,and discuss the instrument response stability,crucial for transit *** on this analysis,we find a system temperature of about 90 K,and we also estimate the sensitivity of the array.

关键词： interferometer radio astronomy neutral hydrogen cosmology dark energy

Fully relativistic many-body perturbation energies,transition properties,and lifetimes of lithium-like iron Fe XXIV

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Chinese Physics B 2023年第10期32卷 90-99页

作者：李双赵敏刘国庆胡昌宝潘国柱 School of Electrical and Opto-electronic engineering West Anhui UniversityLu'an 237012China college of mechanical and electronic engineering Fujian Agriculture and Forestry UniversityFuzhou 350002China Institute of Applied Physics and Computational Mathematics Beijing 100088China Shanghai EBIT Laboratory Institute of Modern PhysicsDepartment of Nuclear Science and TechnologyFudan UniversityShanghai 200433China

Employing the advanced relativistic configuration interaction(RCI)combined with the many-body perturbation theory(RMBPT)method,we report energies and lifetime values for the lowest 35 energy levels from the(1s^(2))nl configurations(where the principal quantum number n=2–6 and the angular quantum number l=0,...,n-1)of lithium-like iron Fe XXIV,as well as complete data on the transition wavelengths,radiative rates,absorption oscillator strengths,and line strengths between the *** the allowed(E1)and forbidden(magnetic dipole M1,magnetic quadrupole M2,and electric quadrupole E2)ones are *** detailed comparisons with previous results,we assess the overall accuracies of present RMBPT results to be likely the most precise ones to *** interaction effects are found to be very important for the energies and radiative properties for the *** present RMBPT results are valuable for spectral line identification,plasma modeling,and diagnosing.

关键词： relativistic many-body perturbation multi-reference configuration radiative rates lifetime