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In-situ interfacial passivation and self-adaptability synergistically stabilizing all-solid-state lithium metal batteries

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Journal of Energy Chemistry 2024年第1期88卷 282-292,I0007页

作者： Huanhui Chen Xing Cao Moujie Huang Xiangzhong Ren yubin zhao Liang Yu Ya Liu Liubiao Zhong Yejun Qiu Shenzhen Engineering Lab of Flexible Transparent Conductive Films School of Materials Science and EngineeringHarbin Institute of TechnologyShenzhen 518055GuangdongChina Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems School of Materials Science and EngineeringHarbin Institute of TechnologyShenzhen 518055GuangdongChina College of Chemistry and Environmental Engineering Shenzhen UniversityShenzhen 518060GuangdongChina School of Resource and Environmental Sciences Wuhan UniversityWuhan 430072HubeiChina

The function of solid electrolytes and the composition of solid electrolyte interphase(SEI)are highly significant for inhibiting the growth of Li ***,we report an in-situ interfacial passivation combined with self-adaptability strategy to reinforce Li_(0.33)La_(0.557)TiO_(3)(LLTO)-based solid-state ***,a functional SEI enriched with LiF/Li_(3)PO_(4) is formed by in-situ electrochemical conversion,which is greatly beneficial to improving interface compatibility and enhancing ion *** the polarized dielectric BaTiO_(3)-polyamic acid(BTO-PAA,BP)film greatly improves the Li-ion transport kinetics and homogenizes the Li *** expected,the resulting electrolyte offers considerable ionic conductivity at room temperature(4.3 x 10~(-4)S cm^(-1))and appreciable electrochemical decomposition voltage(5.23 V)after electrochemical *** Li-LiFePO_(4) batteries,it shows a high specific capacity of 153 mA h g^(-1)at 0.2C after 100 cycles and a long-term durability of 115 mA h g^(-1)at 1.0 C after 800 ***,a stable Li plating/stripping can be achieved for more than 900 h at 0.5 mA cm^(-2).The stabilization mechanisms are elucidated by ex-situ XRD,ex-situ XPS,and ex-situ FTIR techniques,and the corresponding results reveal that the interfacial passivation combined with polarization effect is an effective strategy for improving the electrochemical *** present study provides a deeper insight into the dynamic adjustment of electrode-electrolyte interfacial for solid-state lithium batteries.

关键词： Solid-state lithium batteries Composite solid electrolyte In-situ polymerization Interfacial passivation layer Self-adaptability

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中职计算机教学中学生创新思维培养研究

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信息与电脑 2024年第16期36卷 80-82页

作者：赵虞斌江苏省吴江中等专业学校江苏苏州215200

在中职计算机教学中,培养学生的创新思维是提高教育质量的重要任务。本文介绍了当前中职计算机教学面临的问题,如课程内容陈旧、教学方法单一、实践环节和师资力量不足等,并重点提出了有效培养学生创新思维的策略,如课程设计与内容更新... 详细信息

在中职计算机教学中,培养学生的创新思维是提高教育质量的重要任务。本文介绍了当前中职计算机教学面临的问题,如课程内容陈旧、教学方法单一、实践环节和师资力量不足等,并重点提出了有效培养学生创新思维的策略,如课程设计与内容更新、教学方法与手段创新、创设创新环境与氛围、教师专业发展与培训等,以期为培养具有创新精神和实践能力的高素质人才提供参考。

关键词：中职教育计算机教学创新思维

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Monte-Carlo based random passive energy beamforming for reconfigurable intelligent surface assisted wireless power transfer

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Digital Communications and Networks 2023年第3期9卷 667-676页

作者： Ziyang Lu yubin zhao Xiaofan Li School of Microelectronics Science and Technology Sun Yat-Sen UniversityZhuhai519082China School of Intelligent System Science and Engineering Jinan UniversityZhuhai519070China

Reconfigurable intelligent surface(RIS)employs passive beamforming to control the wireless propagation channel,which benefits the wireless communication capacity and the received energy efficiency of wireless power transfer(WPT)*** beamforming schemes are classified as discrete and non-convex integer program-ming *** this paper,we propose a Monte-Carlo(MC)based random energy passive beamforming of RIS to achieve the maximum received power of electromagnetic(EM)WPT ***,the Gibbs sampling and re-sampling methods are employed to generate phase shift vector *** the sample with the maximum received power is considered the optimal *** order to adapt to the application scenarios,we develop two types of passive beamforming algorithms based on such MC sampling *** first passive beamforming uses an approximation of the integer programming as the initial sample,which is calculated based on the channel *** the second one is a purely randomized algorithm with the only total received power *** proposed methods present several advantages for RIS control,e.g.,fast convergence,easy implementation,robustness to the channel noise,and limited feedback requirement,and they are applicable even if the channel information is *** to the simulation results,our proposed methods outperform other approxi-mation and genetic *** our methods,the WPT system even significantly improves the power effi-ciency in the nonline-of-sight(NLOS)environment.

关键词： Reconfigurable intelligence surface Wireless power transfer Monte-carlo algorithm Passive beamforming Gibbs sampling

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Lyapunov-Guided Optimal Service Placement in Vehicular Edge Computing

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China Communications 2023年第3期20卷 201-217页

作者： Chaogang Tang yubin zhao Huaming Wu School of Computer Science and Technology China University of Mining and TechnologyXuzhou 221116China School of Microelectronics Science and Technology Sun Yat-Sen UniversityZhuhai 519082China Center for Applied Mathematics Tianjin UniversityTianjin 300072China

Vehicular Edge Computing(VEC)brings the computational resources in close proximity to the service requestors and thus supports explosive computing demands from smart ***,the limited computing capability of VEC cannot simultaneously respond to large amounts of offloading requests,thus restricting the performance of VEC ***,a mass of traffic data can incur tremendous pressure on the front-haul links between vehicles and the edge *** strengthen the performance of VEC,in this paper we propose to place services beforehand at the edge server,e.g.,by deploying the services/tasks-oriented data(e.g.,related libraries and databases)in advance at the network edge,instead of downloading them from the remote data center or offloading them from vehicles during the *** this paper,we formulate the service placement problem in VEC to minimize the average response latency for all requested services along the slotted ***,the time slot spanned optimization problem is converted into per-slot optimization problems based on the Lyapunov *** a greedy heuristic is introduced to the drift-plus-penalty-based algorithm for seeking the approximate *** simulation results reveal its advantages over others in terms of optimal values and our strategy can satisfy the long-term energy constraint.

关键词： vehicular edge computing service place-ment response latency computational resources

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Clock distribution and local oscillator of a digital low-level radio-frequency board for SSRF

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Nuclear Science and Techniques 2010年第1期21卷 7-10页

作者： FU Zechuan zhao yubin LIU Jianfei zhao Zhentang Shanghai Institute of AppliedPhysics Chinese Academy of Sciences Shanghai 201800 China Graduate University of Chinese Academy of Sciences Beijing 100049 China Shanghai Key Laboratory of Cryogenics ＆Superconducting FR Technology Shanghai 201800 China

In the storage ring RF system of Shanghai Synchrotron Radiation Facility,the clock distribution and the local oscillator are two parts of the digital low level radio frequency hardware *** this paper,we designed and produced the clock distribution and the local oscillator board using the AD9858 and AD9510 *** results show that the phase noise of the local oscillator signal is lower than 100dBc/Hz with 50 kHz offset.

关键词：上海同步辐射装置时钟分配本振信号电路板射频本地振荡器光源和数

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剖宫产合并胎盘植入膀胱的围术期麻醉1例报道

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云南医药 2024年第1期45卷 112-113页

作者：赵玉斌张雪徐翠曲靖市第一人民医院北城医院麻醉科云南曲靖655000

伴随生育政策放开和剖宫产率上升,有超过两次剖宫产手术史的患者逐年增多,并且随着无痛人流的广泛开展,剖宫产术前有多次人流史的产妇也大量增加,研究表明患者年龄≥35岁、多次妊娠及分娩、剖宫产史≥2次、中央型胎盘以及胎盘主体附着前... 详细信息

伴随生育政策放开和剖宫产率上升,有超过两次剖宫产手术史的患者逐年增多,并且随着无痛人流的广泛开展,剖宫产术前有多次人流史的产妇也大量增加,研究表明患者年龄≥35岁、多次妊娠及分娩、剖宫产史≥2次、中央型胎盘以及胎盘主体附着前壁,是凶险性前置胎盘并胎盘植入的独立危险因素[1]。笔者为1例剖宫产合并胎盘植入膀胱的患者实施全身麻醉,术前MDT会诊提供重要建议,术中失血约4000mL,在各个学科医师的共同努力下,产妇及新生儿均康复出院,现报道如下。

关键词：胎盘植入剖宫产麻醉出血

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Microecology-turbidity toxin theory: correlation between helicobacter pylori infection and manifestation of tongue and gastroscopy

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Journal of Traditional Chinese Medicine 2022年第3期42卷 458-462页

作者： WANG Jin WANG Huijie XIAO Ying GUO Jiaxuan zhao yubin Department of Integrated Chinese and Western Medicine Hebei University of Chinese MedicineShijiazhuang 050000China the Traditional Chinese Medicine Hospital of Shijiazhuang Affiliated to Hebei University of Chinese Medicine Shijiazhuang 050000China Department of Bioengineering School of Chemical EngineeringShijiazhuang UniversityShijiazhuang 050000China The Traditional Chinese Medicine Hospital of Shijiazhuang Affiliated to Hebei University of Chinese Medicine Shijiazhuang 050000HebeiChina Shijiazhuang People's Hospital Shijiazhuang 050000China

OBJECTIVE:To clarify the relationship between helicobacter pylori(Hp)infection,tongue manifestation and gastroscopic manifestation,and explore the mechanism of action of“oral-gastric microecology”in the occurrence and development of stomach-related ***:A total of 1100 patients were divided into Hp positive group and Hp negative group according to 13 C breath test *** tongue manifestation materials from patients were collected to make tongue printing slides for morphological observation of exfoliative cells from tongue coating,and electronic gastroscopy was performed on the patients and the data was ***:Hp infection rate was about 45.95%;and the greasy coating was mostly observed in Hp positive group(63.14%,Pyellow coating>white coating>white greasy *** gastric mucosal roughness and mucosal hematoplastic plaques in the two groups were more common in the Hp positive group(P<0.05).There was a significant difference in the granular subgroup and in the rough mucosal group(P<0.05).CONCLUSIONS:Hp infection is more commonly observed in yellow greasy coating,and this can be used as a reference for Traditional Chinese Medicine in determining whether it is Hp infection or *** granule roughness,hyperemia,and oral Hp showed association with Hp infection in the stomach and interacted with micro-ecological environment that is composed of the oral cavity.

关键词： Helicobacter pylori abnormal tongue presentations gastroscopy breath tests micro-ecology turbidity toxin theory

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Sulfonated polyaniline/vanadate composite as anode material and its electrochemical property in microbial fuel cells on ocean floor

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Science China Chemistry 2011年第5期54卷 844-849页

作者： FU yubin zhao ZhongKai LIU Jia LI KuiZhong XU Qian ZHANG ShaoYun Institute of Materials Science and Engineering Ocean University of ChinaQingdao 266100China

A unique sulfonated polyaniline/vanadate composite was synthesized and utilized as a composite anode in microbial fuel cells on ocean floor (BMFCs). X-ray diffraction (XRD) and thermogravimetric analysis (TGA) were employed to characterize its chemical composition and morphology. Wettability of the composite anodes decreases due to the addition of polytetrafluoroethylene (PTFE). The electrochemical behavior of the composite anodes was investigated by means of linear sweep voltammetry and Tafel plot measurements. Compared with the plain graphite anode,the composite anode significantly improves the power density,5.5-fold higher,reaching 187.1 mW/m2 and gives a 27-fold higher exchange current density and a higher kinetic activity. A novel synergistic mechanism between sulfonated polyaniline and vanadate is proposed to explain the excellent electrochemical performance. This composite thus has great potential to be used as an anode material for a high-power BMFC.

关键词： sulfonated polyaniline/vanadate composite anode material microbial fuel cells on ocean floor power density electrochemical property

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Overburden failure and the prevention of water and sand inrush during coal mining under thin bedrock

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Mining Science and Technology 2011年第5期21卷 733-736页

作者： Yang Weifeng Xia Xiaohong zhao Guorong Ji yubin Shen Dingyi School of Resources and Geosdences China University of Mining ＆ Technology Xuzhou 221116 China

Coal mining under thin bedrock or thick unconsolidated soil layers brings mining problems related to these special geological conditions. The meaning of the term ''thin bedrock'' is defined through the thick- ness statistics of the coal seam and the bedrock layer. The coal-bearing strata having thick, unconsoli- dated aquifers and thin bedrock located at the Taiping Coal Mine in Shandong province were taken as a geological prototype for subsequent study. The geological, hydro-geological and engineering character- istics of the thin bedrock were analyzed. An engineering geological model was than established. Overbur- den failure and the development of ''Three Zones'' were studied by physical model tests. The rupture pattern and rock failure were analyzed for mining conditions under thin bedrock. The height of the caving zone and the freely flowing water fractured zone of different mining thicknesses were separately calcu- lated. The results show that a mining thickness greater than 3.5 m causes the height of the freely flowing water fractured zone to be sufficient to touch the weathered zone and the bottom of the Quaternary sys- tem aquifer, to various degrees. This, then, would lead to water and sand inrush into the working face. Measures to prevent water and sand flow inrush disasters by eliminating the power source are put fore- word. A field dewatering scheme was designed and observational data were obtained. The dewatering project had an obvious effect and the water level at working face number 8309 dropped to a safe level. The average draw down of the groundwater was observed to be 7.86 m. This showed that the dewatering project played a role in decreasing the hydraulic pressure and ensuring safety mining.

关键词： Thin bedrockMining failureWater and sand flow inrushDewatering

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Beam trip diagnostic system at SSRF

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Nuclear Science and Techniques 2009年第5期20卷 261-264页

作者： HOU Hongtao zhao Shenjie LUO Chen zhao yubin ZHANG Zhigang FENG Ziqiang MAO Dongqing LIU Jianfei Shanghai Institute of Applied Physics CAS Shanghai 201800 China Graduate University of Chinese Academy of Sciences Beijing 100049 China Shanghai KEY Laboratory of Cryogenics ＆ Superconducting RF Technology Shanghai 201800 China

In this paper we report the design and realization of beam trip diagnostic system at Shanghai Synchrotron Radiation Facility (SSRF). The system can find out the first fault signal in the key operation signals related to the RF system by analyzing the time sequence, also it can decide which trips occurs first among the three superconducting RF stations. All the states of monitored signals in a time period ahead and behind beam trip are recorded. The results are compared with those from other diagnostic tools at SSRF. The work is of help in improving reliability of the superconducting RF system and stability of the storage ring operation.

关键词： SSRF 核技术同步辐射光源辐射装置

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