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标准铂钴电阻温度计百次低温温循稳定性研究

哈尔滨工业大学学报 2024年第6期56卷 133-142页

作者：宋耀楠刘思琦张海洋高波李福洪 PITRE Laurent 中法低温计量科学与技术国际联合实验室(中国科学院理化技术研究所) 北京100190 中国科学院低温工程学重点实验室(中国科学院理化技术研究所) 北京100190 中国科学院大学北京100049 东北大学冶金学院沈阳110819 云南大方米特尔实业有限公司昆明650300 法国国家计量院-法国国立科学技术与管理学院巴黎F93210

标准铂钴电阻温度计是0.65~24.5561 K(氖三相点)温区重要的测温器件,特别是高稳定的标准铂钴电阻温度计有潜力作为温度标定和温度国际比对的数据载体。为筛选出高稳定的标准铂钴电阻温度计,在前期研究基础上,建立以制冷机为冷源的温度... 详细信息

标准铂钴电阻温度计是0.65~24.5561 K(氖三相点)温区重要的测温器件,特别是高稳定的标准铂钴电阻温度计有潜力作为温度标定和温度国际比对的数据载体。为筛选出高稳定的标准铂钴电阻温度计,在前期研究基础上,建立以制冷机为冷源的温度计低温考核装置,5 K控温稳定性达13μK,24.5561 K控温稳定性达27μK,优于当前同类考核装置公开报道的控温稳定性结果。基于此,在5~24.5561 K温区开展标准铂钴电阻温度计百次低温温循研究,获得5支高稳定的标准铂钴电阻温度计,其中,4支50Ω标准铂钴电阻温度计的稳定性均优于0.2 mK@24.5561 K,1支100Ω标准铂钴电阻温度计的稳定性优于0.5 mK@24.5561 K,为当前标准铂钴电阻温度计低温稳定性国际最好结果。未来本文筛选的高稳定性标准铂钴电阻温度计将用于低温温度标定和低温温度国际比对等相关应用和研究。

关键词：低温考核装置控温稳定性标准铂钴电阻温度计低温稳定性低温温循

Investigation of High-Stability Temperature Control in Primary Gas Thermometry

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Journal of Thermal Science 2022年第3期31卷 765-776页

作者： HU Jiangfeng ZHANG Haiyang song yaonan PAN Changzhao GAO Bo LIU Wenjing HAN Dongxu ZHANG Zhen LUO Ercang PITRE Laurent TIPC-LNE Joint Laboratory on Cryogenic Metrology Science and Technology Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing100190China Key Laboratory of Cryogenics Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing100190China University of Chinese Academy of Sciences Beijing100490China Laboratoire national de métrologie et d’essais-Conservatoire national des arts et métiers F93210La Plaine-Saint DenisParisFrance School of Mechanical Engineering Beijing Institute of Petrochemical TechnologyBeijing102617China

We presented a relationship between the temperature control and measurement stability limit and the temperature resolution,particularly for using rhodium-iron resistance thermometers and AC resistance *** on this,temperature control was investigated and demonstrated in primary gas thermometry under various working *** optimized parameters,micro-Kelvin level temperature control stability was realized in the temperature region from 5 K to 24.5 *** temperature control stabilities are better than 8μK over 180 h with an integration time of 33.6 s in the concerned temperature range,closing to the limit that the sensors and the instruments can control and *** stabilities were significantly improved about(44±8)%at 24.5 K and(70±7)%at 5 K comparing with our previous work(Chen et al.,Cryogenics,2019,97:1–6).

关键词： temperature control temperature stability temperature resolution rhodium-iron resistance thermometer primary gas thermometry

Chinese SPRIGT realizes high temperature stability in the range of 5–25 K

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Science Bulletin 2018年第12期63卷 733-734页

作者： Bo Gao Changzhao Pan Laurent Pitre Yanyan Chen Haiyang Zhang yaonan song Hui then Wenjing Liu Dongxu Han Ercang Luo Key taboratoly of Cryogenics Technical Institute of Physics and Chemistry(TIPC)Chinese Academy of Sciences(CAS)Beijing 100190China Laboratoire notional de mêtrologie Et d'essais-Consen atoire national des arts et mêtiers(LNE-Cnam)F-93210 La PlaineFrance School of Mechanical Engineering Beijing Institute of Petrochemical TechnologyBeijing 102617China Key Laboratory of Thermo-Fluid Science and Engineering of MOE School of Energy and Power EngineeringXi'an Jiaotong universityXi'an 710049China

The unit of thermodynamic temperature,the kelvin,is one of the seven base units of International System of *** accuracy measurements of thermodynamic temperature in the lowtemperature range,namely below the neon tripl... 详细信息

关键词：温度稳定性中国放射设备同步加速器 ities 绝对温度温度范围科学研究

A high-stability quasi-spherical resonator in SPRIGT for microwave frequency measurements at low temperatures

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Science Bulletin 2019年第5期64卷 286-288页

作者： Haiyang Zhang Wenjing Liu Bo Gao Yanyan Chen Changzhao Pan yaonan song Hui Chen Dongxu Han Jiangfeng Hu Ercang Luo Laurent Pitre TIPC-LNE Joint Laboratory on Cryogenic Metrology Science and Technology Chinese Academy of Sciences (CAS) Key Laboratory of Cryogenics Technical Institute of Physics and Chemistry (TIPC) Chinese Academy of Sciences (CAS) Laboratoire National de Métrologie Et d’essais-Conservatoire National des Arts et Métiers (LNE-Cnam) School of Mechanical Engineering Beijing Institute of Petrochemical Technology Key Laboratory of Thermo-Fluid Science and Engineering of MOE School of Energy and Power Engineering Xi’an Jiaotong University University of Chinese Academy of Sciences

To meet the de ma nds of high stability and sustainable temperature measurements over time,TIPC-CAS in China and LNE-Cnam in France have jointly developed single-pressure refractive-index gas thermometiy(SPR1GT),which... 详细信息

关键词： A high-stability quasi-spherical resonator SPRIGT microwave frequency measurements low temperatures

Ultra-stable pressure is realized for Chinese single pressure refractive index gas thermometry in the range 30–90 kPa

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Science Bulletin 2018年第24期63卷 1601-1603页

作者： Dongxu Han Bo Gao Hui Chen Pascal Gambette Haiyang Zhang Changzhao Pan yaonan song Wenjing Liu Jiangfeng Hu Bo Yu Yingwen Liu Ercang Luo Laurent Pitre School of Mechanical Engineering Beijing Institute of Petrochemical TechnologyBeijing 102617China TIPC-LNEJoint Laboratory on Cryogenic Metrology Science and Technology Chinese Academy of Science(CAS)Beijing 100190China Key Laboratory of Cryogenics Technical Institute of Physics and Chemistry(TIPC)Chinese Academy of Sciences(CAS)Beijing 100190China Key Laboratory of Thermo-Fluid Science and Engineering of MOE School of Energy and Power EngineeringXi'an Jiaotong UniversityXi'an 710049China Laboratoire national de metrologie et d'essais-Conservatoire national des arts et metiers(LNE-Cnam) La Plaine-Saint Denis F93210France University of Chinese Academy of Sciences Beijing 100490China

The unit of thermodynamic temperature,the kelvin,is one of the seven base units of International System of *** international temperature scaIe of 1990 (ITS-90)is a practical temperature scale used worldwide to approximate thermodynamic tempera- ture T by ITS-90 temperature *** primary thermometry calibration facilities based on thermodynamic temperature standards are the foundation of ITS 90 and temperature measurement in a *** has developed primary thermometry in the temperature region down to the neon triple point 24.5561 K estimated by ITS-90,but it has not yet set up any primary thermometry at lower temperatures.

关键词： thermodynamic temperature kelvin

The Persistence and Zonal Scale of Atmospheric Dipolar Modes

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Advances in Atmospheric Sciences 2024年第3期41卷 478-492页

作者： Jie song State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics(LASG) Institute of Atmospheric Physics(IAP)Chinese Academy of SciencesBeijing 100029China

This study investigates the relationship between the persistence and the zonal scale of atmospheric dipolar modes(DMs). Results from the daily data of ERA5 and the long-term output of an idealized atmospheric model show that the atmospheric DMs with a broader(narrower) zonal scale dipolar structure possess a longer(shorter) persistence. A detailed vorticity budget analysis indicates that the persistence of a hemispheric-scale DM(1/1 DM) and a regional or sectoral DM(1/8 DM) in the model both largely rely on the persistence of the nonlinear eddy forcing. Linear terms can indirectly reduce the persistence of the anomalous nonlinear eddy forcing in a 1/8 DM by modifying the baroclinicity via the arousal of anomalous vertical motions. Therefore, the atmospheric DMs with a broader(narrower) zonal scale possess a longer(shorter) persistence because the effects of the linear terms are less(more) pronounced when the atmospheric DMs have better(worse) zonal symmetry. Further analyses show that the positive eddy feedback effect is weak or even absent in a 1/8DM and the high-frequency eddy forcing acts more like a concomitant phenomenon rather than a leading driving factor for a 1/8 DM. Thus, the hemispheric-scale DM and the regional or sectoral DMs are different, not only in their persistence but also in their dynamics.

关键词： NAM NAO eddy feedback persistence linear term

Identification of Linear Systems Using Binary Sensors with Random Thresholds

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Journal of Systems Science & Complexity 2024年第3期37卷 907-923页

作者： HUANG Zhiyong song Qijiang School of Mathematics Renmin University of ChinaBeijing 100872China School of Mathematics Sino-French InstituteRenmin University of ChinaBeijing 100872China

In this paper,the problem of identifying autoregressive-moving-average systems under random threshold binary-valued output measurements is *** the help of stochastic approximation algorithms with expanding truncations,the authors give the recursive estimates for the parameters of both the linear system and the binary *** reasonable conditions,all constructed estimates are proved to be convergent to the true values with probability one,and the convergence rates are also established.A simulation example is provided to justify the theoretical results.

关键词： α-mixing binary sensor quantized system stochastic approximation stochastic thresh-old strongly consistent system identification

Chemical vapor deposition making better lithium-sulfur batteries

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Science Bulletin 2024年第13期69卷 2013-2016页

作者： Yingze song Lixian song Menglei Wang Wenlong Cai State Key Laboratory of Environment-Friendly Energy Materials School of Materials and ChemistrySouthwest University of Science and TechnologyMianyang 621010China School of Material Science and Engineering Henan University of TechnologyZhengzhou 450001China Department of Advanced Energy Materials College of Materials Science and EngineeringSichuan UniversityChengdu 610064China

The burgeoning demand for modern electronic devices and electric vehicles has driven the development of efficient,reliable,and environmentally friendly batteries[1,2].Lithium–sulfur(Li–S)batteries with high theoretical capacity(1672 mA h g1)and energy density(2600 W h kg1),have garnered significant interest in both academic and industrial research[3,4].However,the widespread production and commercialization of Li–S batteries are impeded by the inherent characteristics of sulfur and lithium,along with their complex electrochemical ***,challenges such as the polysulfide shuttle effect and the slow kinetics of the sulfur nucleation/decomposition reaction hinder capacity utilization and cycling *** overcome these challenges,innovative electrocatalyst strategies aimed at enhancing activity have been explored.

关键词： lithium overcome cycling

Self-healing Ga-based liquid metal/alloy anodes for rechargeable batteries

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Nano Research 2024年第3期17卷 1366-1383页

作者： Meijia song Zhonghua Zhang School of Energy and Power Jiangsu University of Science and TechnologyZhenjiang 212000China Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials(Ministry of Education) School of Materials Science and EngineeringShandong UniversityJingshi Road 17923Jinan 250061China

With the rapid development of electronics,electric vehicles,and grid energy storage stations,higher requirements have been put forward for advanced secondary *** metal/alloy electrodes have been considered as a promising development direction to achieve excellent electrochemical performance in metal-ion batteries,due to their specific advantages including the excellent electrode kinetics and self-healing ability against microstructural electrode *** conventional liquid batteries,high temperatures are needed to keep electrode liquid and ensure the high conductivity of molten salt electrolytes,which also brings the corrosion and safety ***-based metal/alloys,which can be operated at or near room temperature,are potential candidates to circumvent the above *** this review,the properties and advantages of Ga-based metal/alloys are ***,Ga-based liquid metal/alloys as anodes in various metal-ion batteries are reviewed in terms of their self-healing ability,battery configurations,working mechanisms,and so ***,some views on the future development of Ga-based electrodes in batteries are provided.

关键词： metal-ion batteries Ga-based liquid metal/alloy anodes self-healing capability room temperature