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Mitigated reaction kinetics between lithium metal anodes and electrolytes by alloying lithium metal with low-content magnesium

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Journal of Energy Chemistry 2024年第8期95卷 644-650,I0014页

作者： Yang-Yang Wang Ya-nan Wang nan Yao Shu-Yu Sun Xiao-qing ding Chen-Xi Bi Qian-Kui Zhang Zhao Zheng Cheng-Bin Jin Bo-Quan li Xue-Qiang Zhang Jia-Qi Huang School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China Advanced Research institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing 100081China Beijing Key Laboratory of Green Chemical Reaction Engineering and technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China College of Materials and Chemistry China Jiliang UniversityHangzhou 310018ZhejiangChina

lithium(li)metal is regarded as a promising anode candidate for high-energy-density rechargeable ***,li metal is highly reactive against electrolytes,leading to rapid decay of active li metal ***,alloying li metal with low-content magnesium(Mg)is proposed to mitigate the reaction kinetics between li metal anodes and *** atoms enter the lattice of li atoms,forming solid solution due to the low amount(5 wt%)of *** atoms mainly concentrate near the surface of Mg-alloyed li metal *** reactivity of Mg-alloyed li metal is mitigated kinetically,which results from the electron transfer from li to Mg atoms due to the electronegativity *** on quantitative experimental analysis,the consumption rate of active li and electrolytes is decreased by using Mgalloyed li metal anodes,which increases the cycle life of li metal batteries under demanding ***,a pouch cell(1.25 Ah)with Mg-alloyed li metal anodes delivers an energy density of 340 Wh kg^(-1)and a cycle life of 100 *** work inspires the strategy of modifying li metal anodes to kinetically mitigate the side reactions with electrolytes.

关键词： lithium metal anodes Alloying Anode/electrolyte interface Reaction kinetics Pouch cell

Stepped-up development of accelerator mass spectrometry method for the detection of ^(60)Fe with the HI-13 tandem accelerator

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Nuclear Science and Techniques 2024年第4期35卷 136-143页

作者： Yang Zhang Sheng-Quan Yan Ming He qing-Zhang Zhao Wen-Hui Zhang Chao-xin Kan Jian-Ming Zhou Kang-Ning li Xiao-Fei Wang Jian-Cheng liu Zhao-Hua Peng Zhuo liang Ai-ling li Jian Zheng Qi-Wen Fan Yun-Ju li You-Bao Wang Zhi-Hong li Yang-Ping Shen ding nan Wei nan Yu-Qiang Zhang Jia-Ying-Hao li Jun-Wen Tian Jiang-lin Hou Chang-xin Guo Zhi-Cheng Zhang Ming-Hao Zhu Yu-Wen Chen Yu-Chen Jiang Tao Tian Jin-Long Ma Yi-Hui liu Jing-Yu Dong Run-Long liu Mei-Yue-nan Ma Yong-Shou Chen Wei-Ping liu Bing Guo china institute of Atomic Energy P.O.Box 275(10)Beijing 102413China College of Science Southern University of Science and TechnologyShenzhen 518055China School of Physics Xi’an Jiaotong UniversityXi’an 710049China

The Moon provides a unique environment for investigating nearby astrophysical events such as *** samples retain valuable information from these events,via detectable long-lived“fingerprint”radionuclides such as^(60)*** this work,we stepped up the development of an accelerator mass spectrometry(AMS)method for detecting^(60)Fe using the HI-13tandem accelerator at the china institute of Atomic Energy(CIAE).Since interferences could not be sufficiently removed solely with the existing magnetic systems of the tandem accelerator and the following Q3D magnetic spectrograph,a Wien filter with a maximum voltage of±60 kV and a maximum magnetic field of 0.3 T was installed after the accelerator magnetic systems to lower the detection background for the low abundance nuclide^(60)Fe.A 1μm thick Si_(3)N_(4) foil was installed in front of the Q3D as an energy *** particle detection,a multi-anode gas ionization chamber was mounted at the center of the focal plane of the ***,an^(60)Fe sample with an abundance of 1.125×10^(-10)was used to test the new AMS *** results indicate that^(60)Fe can be clearly distinguished from the isobar^(60)*** sensitivity was assessed to be better than 4.3×10^(-14)based on blank sample measurements lasting 5.8 h,and the sensitivity could,in principle,be expected to be approximately 2.5×10^(-15)when the data were accumulated for 100 h,which is feasible for future lunar sample measurements because the main contaminants were sufficiently separated.

关键词： Accelerator mass spectrometry Wien filter Isobar separation Supernovae Chang'e-5 lunar samples

Probing dark matter particles from evaporating primordial black holes via electron scattering in the CDEX-10 experiment

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Science china(Physics,Mechanics & Astronomy) 2024年第10期Mechanics & Astronomy) .卷 87-95页

作者： Zhenhua Zhang litao Yang Qian Yue Kejun Kang Yuanjing li Haipeng An Greeshma C. Jianping Chang Yunhua Chen Jianping Cheng Wenhan Dai Zhi Deng Changhao Fang xinping Geng Hui Gong Qiuju Guo Tao Guo Xuyuan Guo li He Shengming He Jinwei Hu Hanxiong Huang Tuchen Huang lin Jiang S.Karmakar Haubin li Hanyu li Jianmin li Jin li Qianyun li Renmingjie li Xueqian li Yulan li Yifan liang Bin liao FongKay lin ShinTed lin Jiaxuan liu Shukui liu Yandong liu Yu liu Yuanyuan liu Hao Ma Yucai mao Qiyuan Nie Jinhua Ning Hui Pan Ningchun Qi Jie Ren Xichao Ruan Monoj Kumar Singh Tianxi Sun Changjian Tang Yang Tian Guangfu Wang Junzheng Wang li Wang qing Wang Yufeng Wang Yunxiang Wang Henry Tsz-King Wong Shiyong Wu Yucheng Wu Haoyang xing Rui Xu Yin Xu Tao Xue Yulu Yan nan Yi Chunxu Yu Haijun Yu Jianfeng Yue Ming Zeng Zhi Zeng Bingtao Zhang Fengshou Zhang Lei Zhang Zhenyu Zhang Jizhong Zhao Kangkang Zhao Minggang Zhao Jifang Zhou Zuying Zhou Jingjun Zhu CDEX Collaboration Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics Tsinghua University Department of Physics Tsinghua University institute of Physics Academia Sinica NUCTECH Company YaLong River Hydropower Development Company College of Nuclear Science and technology Beijing Normal University College of Physics Sichuan University School of Physics Peking University Department of Nuclear Physics China Institute of Atomic Energy Sino-French institute of Nuclear and technology Sun Yet-sen University School of Physics Nankai University Department of Physics Banaras Hindu University Department of Physics Beijing Normal University

Dark matter（DM） is a major constituent of the ***,no definite evidence of DM particles（denoted as “χ”） has been found in DM direct detection（DD） experiments to *** is a novel concept of detectingχfrom evaporating primordial black holes（PBHs）.We search forχemitted from PBHs by investigating their interaction with target *** examined PBH masses range from 1×1015to 7×1016g under the current limits of PBH abundance *** 205.4 kg·day data obtained from the CDEX-10 experiment conducted in the china Jinping Underground Laboratory,we exclude the χ-electron（χ-e） elastic-scattering cross section σχe～5×10-29cm2for χ with a mass ■ keV from our *** the higher radiation background but lower energy threshold（160 eV）,CDEX-10 fills a part of the gap in the previous *** (mχ,σχe) can be determined in the future,DD experiments are expected to impose strong constraints on fPBHfor large MPBHs.

关键词： CDEX primordial black hole light dark matter particle dark matter-electron scattering high purity germanium detector

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金属有机框架材料MIL-101在吸附去除水中有机污染物中的应用进展

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分析测试学报 2024年第4期43卷 654-662页

作者：兰梓溶清江陈有为许宙陈茂龙文李程云辉丁利长沙理工大学食品科学与生物工程学院湖南长沙410114 上海海关工业品与原材料检测中心上海200135 宁波海关技术中心浙江宁波315012

金属有机框架材料(MOFs)是一种极具前景的水中污染物吸附材料,其中,拉瓦锡研究所材料(MIL)凭借较好的稳定性和较多的可调节位点在众多MOFs中脱颖而出。与其他MILs相比,MIL-101具有比表面积较大和表面活性位点多的特点,在水中的稳定性高... 详细信息

金属有机框架材料(MOFs)是一种极具前景的水中污染物吸附材料,其中,拉瓦锡研究所材料(MIL)凭借较好的稳定性和较多的可调节位点在众多MOFs中脱颖而出。与其他MILs相比,MIL-101具有比表面积较大和表面活性位点多的特点,在水中的稳定性高,已成为一种新兴的吸附材料。鉴于此,该文对近年来MIL-101在水中有机污染物去除领域的应用研究进行了综述,主要对MIL-101结构、改性修饰及其在水污染物吸附去除方面的应用及吸附机理进行了介绍。最后对MIL-101吸附材料的应用前景进行了分析和展望。

关键词： MIL-101 吸附改性修饰有机污染物水

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大气湍流对高分辨率遥感卫星的成像影响研究

中国光学（中英文） 2024年第1期17卷 167-177页

作者：毛红敏丁致雅杨燕燕江苏奇彭建涛曹楠胡立发曹召良苏州科技大学物理科学与技术学院江苏苏州215009 江苏省微纳热流技术与能源应用重点实验室江苏苏州215009 江南大学理学院江苏无锡214122 中国航天科技集团公司上海卫星工程研究所上海201109

遥感卫星在国防和民用探测等领域发挥着重要作用,而大气湍流严重影响高分辨率遥感卫星的成像质量。本文重点研究了遥感卫星对地探测时,相机口径、卫星轨高和大气湍流强度对空间相机成像质量的影响。首先,基于球面波传输模型和Kolmogoro... 详细信息

遥感卫星在国防和民用探测等领域发挥着重要作用,而大气湍流严重影响高分辨率遥感卫星的成像质量。本文重点研究了遥感卫星对地探测时,相机口径、卫星轨高和大气湍流强度对空间相机成像质量的影响。首先,基于球面波传输模型和Kolmogorov湍流理论,针对空对地探测湍流波前进行仿真。然后,分析畸变波前随相机口径、卫星轨高和大气相干长度的变化规律,并推导出普适公式。在此基础上,进一步推导出空间相机成像分辨率随相机口径、卫星轨高和大气相干长度变化的计算公式。最后,研究了大气湍流对空间相机调制传递函数(MTF)的影响,并以MTF=0.15为基准,仿真分析了MTF相对误差随相机口径、卫星轨高和大气相干长度的变化规律。本研究为高分辨率遥感卫星的设计、分析和评估提供理论依据。

关键词：高分辨率卫星大气湍流空对地观测成像质量

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1986~2018年东北地区城镇扩展占用黑土资源时空变化特征及其影响因素

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土壤通报 2024年第3期55卷 610-621页

作者：袁承程秦宁李亚南张海涛张青璞张定祥中国农业大学土地科学与技术学院北京100193 中国国土勘测规划院北京100035 碳中和与国土空间优化重点实验室北京100035 农业农村部农村社会事业发展中心北京100122 农业农村部耕地质量监测保护中心北京100125

【目的】分析东北地区城镇扩展占用黑土资源的时空变化特征及其影响因素,为黑土资源保护提供对策建议。【方法】构建城镇扩展占用黑土资源的速率和强度指标,应用空间自相关和地理探测器方法,分析1986~2018年东北地区城镇扩展占用黑土资... 详细信息

【目的】分析东北地区城镇扩展占用黑土资源的时空变化特征及其影响因素,为黑土资源保护提供对策建议。【方法】构建城镇扩展占用黑土资源的速率和强度指标,应用空间自相关和地理探测器方法,分析1986~2018年东北地区城镇扩展占用黑土资源的时空特征与影响因素。【结果】①1986~2018年东北地区城镇扩展占用黑土资源总面积为4953.47km^(2),其中,2009~2018年占用黑土资源总面积为1584.75km^(2),年均占用速率较1986~2009年增加了29.62km^(2)a^(-1);②2009~2018年东北地区城镇扩展占用黑土资源的年均强度值为0.58,较1986~2009年提升了0.04;③东北地区城镇扩展占用黑土资源速率和强度在空间上具有高度集聚性,且占用强度的集聚性整体高于占用速率;④经济越发达、人口密度越高、距离道路越近的地区城镇扩展占用黑土资源速率越大,地级城市周边低海拔缓坡地带的黑土资源更容易被占用。【结论】东北地区城镇扩展占用黑土资源速率持续增加且呈现两极分化特征,东北地区城镇新增建设用地超过一半来源于黑土资源,且比例不断扩大,其中社会经济、可达性、自然条件是东北地区城镇扩展占用黑土资源的主要影响因素。

关键词：城镇扩展黑土资源时空变化特征影响因素东北地区

Comparison of transport coefficients before and after density pump-out induced by resonant magnetic perturbation using a BOUT++ six-field model on the EAST tokamak

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Plasma Science and technology 2024年第6期26卷 111-119页

作者：邓成成刘子奚夏天阳刘彦君厉鹏程龙飞飞高翔王守信李国强刘海庆臧庆李玖瑛杨康宁吴茗甫尹晓宇李弘谢锦林兰涛毛文哲刘阿娣周楚丁卫星庄革刘万东 the EAST Team Department of Plasma Physics and Fusion Engineering University of Science and Technology of ChinaHefei 230026People’s Republic of China institute of Plasma Physics Chinese Academy of SciencesHefei 230031People’s Republic of China

Many experiments have demonstrated that resonant magnetic perturbation(RMP) can affect the turbulent transport at the edge of the tokamak. Through the Experimental Advanced Superconducting Tokamak(EAST) density modulation experiment, the particle transport coefficients were calculated using the experimental data, and the result shows that the particle transport coefficients increase with RMP. In this study, the six-field two-fluid model in BOUT++ is used to simulate the transport before and after density pump-out induced by RMP,respectively referred as the case without RMP and the case with RMP. In the linear simulations,the instabilities generally decreases for cases with RMP. In the nonlinear simulation, ELM only appears in the case without RMP. Additionally, the particle transport coefficient was analyzed,and the result shows that the particle transport coefficient becomes larger for the case with RMP,which is consistent with the experimental conclusion. Moreover, its magnitude is comparable to the results calculated from experimental data.

关键词： BOUT++ resonant magnetic perturbation(RMP) transport coefficients

Minimum quantity lubrication machining of aeronautical materials using carbon group nanolubricant: From mechanisms to application

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Chinese Journal of Aeronautics 2022年第11期35卷 85-112页

作者： xin CUI Changhe li Wenfeng ding Yun CHEN Cong mao Xuefeng XU Bo liU Dazhong WANG Hao nan li Yanbin ZHANG Zafar SAID Sujan DEBNATH Muhammad JAMIL Hafiz Muhammad Ali Shubham SHARMA School of Mechanical and Automotive Engineering Qingdao University of TechnologyQingdao 266520China College of Mechanical and Electrical Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China Chengdu Tool Research institute Co. Ltd.Chengdu 610500China College of Automotive and Mechanical Engineering Changsha Universiy of Science and TechnologyChangsha 410ll14China Key Laboratory of Special Purpose Equipment and Advanced Processing technology Ministry of Education&Zhejiang ProvinceZhejiang University of TechnologyHangzhou 310032China Sichuan Future Aerospace Industry LLC. Shifang 618400China School of Mechanical and Automotive Engineering Shanghai University of Engineering ScienceShanghai 201620China School of Aerospace Universiy of Notingham Ningbo ChinaNingbo 315100China College of Engineering Universityof SharjahSharjah 27272United Arab Emirates Mechanical Engineering Department Curtin UniversityMiri 98009Malaysia Mechanical Engineering Department King Fahd University of Petroleum and MineralsDhahran 31261Saudi Arabia Department of Mechanical Engineering and Advanced Materials Science Council of Scientific and Industrial Research(CSIR)-Central Leather Research Institute(CLRI)Regional Center for Extension and DevelopmentJalandhar 144021India

It is an inevitable trend of sustainable manufacturing to replace flood and dry machining with minimum quantity lubrication(MQL)***,for aeronautical difficult-tomachine materials,MQL couldn’t meet the high demand of cooling and lubrication due to high heat generation during ***-biolubricants,especially non-toxic carbon group nano-enhancers(CGNs)are used,can solve this technical ***,the machining mechanisms under lubrication of CGNs are unclear at complex interface between tool and workpiece,which characterized by high temperature,pressure,and speed,limited its application in factories and necessitates in-depth *** fill this gap,this study concentrates on the comprehensive quantitative assessment of tribological characteristics based on force,tool wear,chip,and surface integrity in titanium alloy and nickel alloy machining and attempts to answer mechanisms ***,to establish evaluation standard,the cutting mechanisms and performance improvement behavior covering antifriction,antiwear,tool failure,material removal,and surface formation of MQL were ***,the unique film formation and lubrication behaviors of CGNs in MQL turning,milling,and grinding are *** influence law of molecular structure and micromorphology of CGNs was also answered and optimized options were recommended by considering diverse boundary ***,in view of CGNs limitations in MQL,the future development direction is proposed,which needs to be improved in thermal stability of lubricant,activity of CGNs,controllable atomization and transportation methods,and intelligent formation of processing technology solutions.

关键词： Aerospace materials Carbon nanoparticles Grinding Lubrication mechanism Milling Minimum quantity lubrication Turning

Redox Memristors with Volatile Threshold Switching Behavior for Neuromorphic Computing

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Journal of Electronic Science and technology 2022年第4期20卷 356-374页

作者： Yu-Hao Wang Tian-Cheng Gong Ya-xin ding Yang li Wei Wang Zi-Ang Chen nan Du Erika Covi Matteo Farronato Dniele Ielmini Xu-Meng Zhang qing Luo Key Laboratory of Microelectronic Devices and Integrated technology Institute of Microelectronics of the Chinese Academy of SciencesBeijing 100029 University of Chinese Academy of Sciences Beijing 100049 Peng Cheng Laboratory Shenzhen 518055 institute for Solid State Physics University of JenaJena 07743 Department of Quantum Detection Leibniz Institute of Photonic TechnologyJena 07743 nanoelectronic Materials Laboratory Dresden 01187 Department of Electronics Information and BioengineeringPolitecnico di MilanoMilan 20133 Frontier institute of Chip and System Fudan UniversityShanghai 200433

The spiking neural network(SNN),closely inspired by the human brain,is one of the most powerful platforms to enable highly efficient,low cost,and robust neuromorphic computations in hardware using traditional or emerging electron devices within an integrated *** the hardware implementation,the building of artificial spiking neurons is fundamental for constructing the whole ***,with the slowing down of Moore’s Law,the traditional complementary metal-oxide-semiconductor(CMOS)technology is gradually fading and is unable to meet the growing needs of neuromorphic ***,the existing artificial neuron circuits are complex owing to the limited bio-plausibility of CMOS *** with volatile threshold switching(TS)behaviors and rich dynamics are promising candidates to emulate the biological spiking neurons beyond the CMOS technology and build high-efficient neuromorphic ***,the state-of-the-art about the fundamental knowledge of SNNs is ***,we review the implementation of TS memristor-based neurons and their systems,and point out the challenges that should be further considered from devices to circuits in the system *** hope that this review could provide clues and be helpful for the future development of neuromorphic computing with memristors.

关键词： Memristors neuromorphic computing threshold switching