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Anion-immobilized solid composite electrolytes based on metal-organic frameworks and superacid ZrO_(2) fillers for high-performance all solid-state lithium metal batteries

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International Journal of Minerals,Metallurgy and Materials 2021年第10期28卷 1636-1646页

作者： Tao Wei Zao-hong Zhang qi Zhang Jia-hao Lu qi-ming Xiong Feng-yue Wang Xin-ping Zhou Wen-jia Zhao Xiang-yun qiu School of Energy and Power Jiangsu University of Science and TechnologyZhenjiang 212003China Institute of Mechanics and Energy National Research Ogarev Mordovia State UniversitySaransk 430000Russia Jiangsu University Jingjiang College Zhenjiang 212003China Department of Chemistry College of ScienceNanjing Agricultural UniversityNanjing 210095China Power&Energy Storage System Research Center College of Mechanical and Electrical EngineeringQingdao UniversityQingdao 266071China

Anion-immobilized solid composite electrolytes(SCEs)are important to restrain the propagation of lithium dendrites for all solid-state lithium metal batteries(ASSLMBs).Herein,a novel SCEs based on metal-organic frameworks(MOFs,UiO-66-NH_(2))and superacid ZrO_(2)(S-ZrO_(2))fillers are proposed,and the samples were characterized by X-ray diffraction(XRD),scanning electron microscope(SEM),energy dispersive X-ray spectroscopy(EDS),thermo-gravimetric analyzer(TGA)and some other electrochemical ***-NH_(2) groups of UiO-66-NH_(2) combines with F atoms of poly(vinylidene fluoride-co-hexafluoropropylene)(PVDF-HFP)chains by hydrogen bonds,leading to a high electrochemical stability window of 5 *** to the incorporation of UiO-66-NH_(2) and S-ZrO_(2) in PVDF-HFP polymer,the open metal sites of MOFs and acid surfaces of S-ZrO_(2) can immobilize anions by strong Lewis acid-base interaction,which enhances the effect of immobilization anions,achieving a high Li-ion transference number(t_(+))of 0.72,and acquiring a high ionic conductivity of 1.05×10^(-4) S·cm^(-1) at 60℃.The symmetrical Li/Li cells with the anion-immobilized SCEs may steadily operate for over 600 h at 0.05 mA·cm^(-2) without the shortcircuit ***,the solid composite Li/LiFePO_(4)(LFP)cell with the anion-immobilized SCEs shows a superior discharge specific capacity of 158 mAh·g^(-1) at 0.2 *** results illustrate that the anion-immobilized SCEs are one of the most promising choices to optimize the performances of ASSLMBs.

关键词： solid composite electrolytes poly(vinylidene fluoride-co-hexafluoropropylene)(PVDF-HFP) all solid-state lithium metal batteries metal-organic frameworks anion-immobilized

ON THE EXISTENCE OF ALMOST GLOBAL WEAK SOLUTION TO MULTIDIMENSIONAL VLASOV-POISSON EQUATION

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Chinese Annals of Mathematics,Series B 1998年第3期19卷 381-390页

作者： Z HZNG ping qiu qiNGJIU 南京大学数学系江苏南京

The authors prove the existence of almost global weak solution to multidimensional Vlasov Poisson equation with a class of Randon measure as initial data.

关键词： Vlasov Poisson equation Almost global weak solution Singular integral operator

脯氨酰羟化酶2抑制剂cpd17对小鼠成骨前体细胞的影响

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中国组织工程研究 2025年第2期29卷 238-244页

作者：杜忠秋戚晓阳杨平于江林陈一心张林坚邱旭升南京中医药大学鼓楼临床医学院江苏省南京市210008 南京大学医学院附属鼓楼医院骨科江苏省南京市210008 江苏大学鼓楼临床医学院江苏省南京市210008 中国药科大学化学系江苏省南京市211198

背景:脯氨酰羟化酶2抑制剂能够调节骨代谢,改善卵巢切除大鼠骨质疏松。cpd17是中国药科大学最新研发的一款小分子口服脯氨酰羟化酶2抑制剂,用于治疗肾性贫血疗效肯定,不良反应小,但是对骨形成和骨吸收的作用还不清楚。目的:探讨脯氨酰... 详细信息

背景:脯氨酰羟化酶2抑制剂能够调节骨代谢,改善卵巢切除大鼠骨质疏松。cpd17是中国药科大学最新研发的一款小分子口服脯氨酰羟化酶2抑制剂,用于治疗肾性贫血疗效肯定,不良反应小,但是对骨形成和骨吸收的作用还不清楚。目的:探讨脯氨酰羟化酶2抑制剂cpd17对成骨前体细胞的影响。方法:采用cpd17处理C57BL/6小鼠成骨前体细胞,检测碱性磷酸酶活性和细胞外基质矿化程度,检测成骨、破骨相关标志物以及脯氨酰羟化酶2、低氧诱导因子1α的表达水平。使用低氧诱导因子1α通路抑制剂LW6抑制低氧诱导因子1α通路后,再次检测碱性磷酸酶活性和细胞外基质矿化程度,以及成骨和破骨分化相关标志物以及脯氨酰羟化酶2、低氧诱导因子1α的表达水平。结果与结论:cpd17能显著增强碱性磷酸酶活性和基质矿化程度,上调成骨分化相关标志物的表达,下调破骨分化相关标志物的表达,并上调低氧诱导因子1α表达,下调脯氨酰羟化酶2的表达。而LW6能明显减弱cpd17的作用。结果表明,脯氨酰羟化酶2抑制剂cpd17可通过激活低氧诱导因子1α信号通路促进成骨分化和抑制破骨分化。

关键词：脯氨酰羟化酶2抑制剂 cpd17 低氧诱导因子成骨前体细胞成骨分化骨质疏松

New Li-ion Battery Evaluation Research Based on Thermal Property and Heat Generation Behavior of Battery

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Chinese Journal of Chemical Physics 2012年第6期25卷 725-732,I0004页

作者： Zhe Lv Xun Guo Xin-ping qiu Key Laboratory of Organic Optoelectronics and Molecular Engineering Department of ChemistryTsinghua University Be~iing 100084 China

We do a new Li-ion battery evaluation research on the effects of cell resistance and polariza- tion on the energy loss in batteries based on thermal property and heat generation behavior of battery. Series of 18650 cells with different capacities and electrode materials are evalu- ated by measuring input and output energy which change with charge-discharge time and current. Based on the results of these tests, we build a model of energy loss in cells＇ charge- discharge process, which include Joule heat and polarization heat impact factors. It was reported that Joule heat was caused by cell resistance, which included De-resistance and reaction resistance, and reaction resistance could not be easily obtained through routine test method. Using this new method, we can get the total resistance R and the polarization parameter U. The relationship between R, η, and temperature is also investigated in order to build a general model for series of different Li-ion batteries, and the research can be used in the performance evaluation, state of charge prediction and the measuring of consistency of the batteries.

关键词： Li-ion battery Energy loss Heat Cell resistance Polarization State of chargeprediction

A Variant of the Dual Face Algorithm Using Gauss-Jordan Elimination for Linear Programming

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Journal of the Operations Research Society of China 2016年第3期4卷 347-356页

作者： ping-qi Pan Department of Mathematics Southeast UniversityNanjing 210096China

Using Cholesky factorization, the dual face algorithm was described forsolving standard Linear programming (LP) problems, as it would not be very suitablefor sparse computations. To dodge this drawback, this paper pre... 详细信息

关键词： Linear programming Bounded-variable Dual face Dual optimal face Gauss-Jordan elimination

Effect of Complex Parameters of Porous Media on Desalination Performance in Air-Gap Diffusion Distillation Based on Multiple Regression Analysis

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Journal of Thermal Science 2022年第6期31卷 2329-2345页

作者： CHEN Lele WANG ping ZHANG Xuan qiu qinggang Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education School of Energy and Power EngineeringDalian University of TechnologyDalian 116024China

Air-Gap Diffusion Distillation(AGDD) is a new technology aiming at solving the problem of the safety of drinking water for residents in remote areas that uses a super hydrophilic porous medium as the hot channel and evaporation surface. In the experiment, it was found that the parameters of porous media have a significant influence on the desalination(evaporation) efficiency of AGDD. Although porous media are widely used as evaporation components, the factors affecting their evaporation efficiency are not fully understood. The evaporation process in super hydrophilic porous media is rarely discussed. A large number of experiments have been carried out based on AGDD. The introduction of statistical methods solves the problem that experiments cannot distinguish the contribution of complex parameters of porous media to evaporation efficiency. Stepwise regression analysis is used to reduce the dimensionality of the independent variables and construct regression equations(coefficient of determination R~2 reached 81.3%-96.8%). Evaporation flux correlations and dimensionless mass transfer correlations are established based on porous media parameters. We found that the surface evaporation of super hydrophilic porous media can be divided into three stages: diffusion evaporation, capillary evaporation, and thermal evaporation. The evaporation efficiency of these three stages is controlled by the vapor diffusion process resistance, capillary force, and energy supply. At low saturation, evaporation efficiency is limited by the resistance of the vapor diffusion process. The evaporation efficiency of the porous media is affected predominantly by the pore size, the specific surface area, porosity and the characteristic length. At high saturation, the evaporation efficiency becomes influenced primarily by the permeability. A small thickness and a high hydrophilicity also improve the evaporation efficiency.

关键词： Air-Gap Diffusion Distillation(AGDD) stepwise regression analysis evaporation super hydrophilic porous media desalination

Microstructure and Elevated Temperature Tensile Behavior of Directionally Solidified Ni-rich NiAl-Mo(Hf) Alloy

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Journal of Materials Science & Technology 2011年第5期27卷 437-442页

作者： ping Han Yihui qi Jianting Guo Department of Physics Bohai University Jinzhou 121013 China Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China

The microstructure, high strain rate superplasticity and tensile creep behavior of directionally solidified （DS） NiAI-Mo（Hf） alloy have been investigated. The alloy exhibits dendritic structure, where dendritic arm is NiAI phase, interdendritic region is Ni3AI phase, and Mo-rich phase distributes in the NiAI and Ni3AI phases. The alloy exhibits high strain rate superplastic deformation behavior, and the maximum elongation is 104.2% at 1373 K and strain rate of 1.04xi0-2 s-I. The balance between strain hardening （by dislocation glide） and strain softening （by dynamic recovery and recrystallization） is responsible for the superplastic deformation. All the creep curves of the DS NiAI-Mo（Hf） alloy have similar shape of a short primary creep and dominant steady creep stages, and the creep strain is great. The possible creep deformation mechanism was also discussed. The creep fracture data follow the Monkman-Grant relationship.

关键词： NiA1 alloy Directional solidification Superplasticity Creep

A GENERALIZED QUASI-NEWTON EQUATION AND COMPUTATIONAL EXPERIENCE

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Journal of Computational Mathematics 2006年第5期24卷 665-674页

作者： Lei-hong Zhang ping-qi Pan Department of Mathematics Southeast University Nanjing 210096 China

The quasi-Newton equation has played a central role in the quasi-Newton methods for solving systems of nonlinear equations and/or unconstrained optimization problems. Insteady Pan suggested a new equation, and showed that it is of the second order while the traditional of the first order, in certain approximation sense [12]. In this paper, we make a generalization of the two equations to include them as special cases. The generalized equation is analyzed, and new updates are derived from it. A DFP-like new update outperformed the traditional DFP update in computational experiments on a set of standard test problems.

关键词： System of nonlinear equations, Unconstrained optimization, Quasi-Newtone quation Second-order Quasi-Newton equation, Update formula.

Research and Development of Indoor Positioning

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China Communications 2016年第S2期13卷 67-79页

作者： qi Liu Jiahui qiu Yi Chen China Unicom Network Technology Research Institute Shouti South Road Haidian Dist. Beijing 100048 China Beijing University of Posts and Telecommunications

Indoor positioning systems have been sufficiently researched to provide location information of persons and *** paper is focused on the current research and further development of indoor *** standard evolution and industry development are *** are various positioning systems according to the scenarios,cost and ***,there is a basic positioning system framework including information extraction,measurement and *** particular,the detailed positioning technologies mainly including cellular positioning and Local Area Network(LAN) positioning are listed and compared to provide a reference for practical ***,we summarize the challenges of indoor positioning and give a3-phase evolution route.

关键词： indoor positioning LBS cellular network local area network