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Recent progress in constructing fluorinated solid-electrolyte interphases for stable lithium metal anodes

International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 270-291页

作者： Di Zhang Pengfei Lv wei qin Xin He Yuanhua He Civil Aircraft Fire Science and Safety Engineering Key Laboratory of Sichuan Province College of Civil Aviation Safety EngineeringCivil Aviation Flight University of ChinaGuanghan 618307China School of Chemical Engineering Sichuan UniversityChengdu 610065China

Lithium metal batteries(LMBs)are emerging as a promising energy storage solution owing to their high energy density and specific ***,the non-uniform plating of lithium and the potential rupture of the solid-electrolyte interphase(SEI)during extended cycling use may result in dendrite growth,which can penetrate the separator and pose significant short-circuit *** a stable SEI is essential for the long-term operation of the ***-rich SEI has garnered significant attention for its ability to effectively passivate electrodes,regulate lithium deposition,and inhibit electrolyte *** the structural components and preparation methods of existing fluorinated SEI is crucial for optimizing lithium metal anode *** paper reviews the research on optimizing LiF passivation interfaces to protect lithium metal *** focuses on four types of compositions in fluorinated SEI that work synergistically to enhance SEI *** instance,combining compounds with LiF can further enhance the mechanical strength and ionic conductivity of the *** metals with LiF significantly improves electrochemical performance at the SEI/anode interface,with a necessary focus on reducing electron tunneling ***,incorporating polymers with LiF offers balanced improvements in interfacial toughness and ionic conductivity,though maintaining structural stability over long cycles remains a critical area for future *** alloys combined with LiF increase surface energy and lithium affinity,challenges such as dendrite growth and volume expansion *** summary,this paper emphasizes the crucial role of interfacial structures in LMBs and offers comprehensive guidance for future design and development efforts in battery technology.

关键词： LiF lithium metal anodes solid-electrolyte interphase interface cycling stability

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Porous Organic Cage‑Based Quasi‑Solid‑State Electrolyte with Cavity‑Induced Anion‑Trapping Effect for Long‑Life Lithium Metal Batteries

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Nano-Micro Letters 2025年第2期17卷 376-386页

作者： wei-Min qin Zhongliang Li Wen‑Xia Su Jia‑Min Hu Hanqin Zou Zhixuan Wu Zhiqin Ruan Yue‑Peng Cai Kang Li Qifeng Zheng School of Chemistry South China Normal UniversityGuangzhou 510006People’s Republic of China Key Laboratory of Functional Metal‑Organic Compounds of Hunan Province College of Chemistry and Material ScienceHengyang Normal UniversityHengyang 421008People’s Republic of China Guangzhou Key Laboratory of Energy Conversion and Energy Storage Materials Guangzhou 510006People’s Republic of China

Porous organic cages(POCs)with permanent porosity and excellent host–guest property hold great potentials in regulating ion transport behavior,yet their feasibility as solid-state electrolytes has never been testified in a practical ***,we design and fabricate a quasi-solid-state electrolyte(QSSE)based on a POC to enable the stable operation of Li-metal batteries(LMBs).Benefiting from the ordered channels and cavity-induced anion-trapping effect of POC,the resulting POC-based QSSE exhibits a high Li+transference number of 0.67 and a high ionic conductivity of 1.25×10^(−4) S cm^(−1) with a low activation energy of 0.17 *** allow for homogeneous Li deposition and highly reversible Li plating/stripping for over 2000 *** a proof of concept,the LMB assembled with POC-based QSSE demonstrates extremely stable cycling performance with 85%capacity retention after 1000 ***,our work demonstrates the practical applicability of POC as SSEs for LMBs and could be extended to other energy-storage systems,such as Na and K batteries.

关键词： Porous organic cage Cavity-induced anion-trapping Quasi-solid-state electrolyte Homogeneous Li+flux Lithium metal battery

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数字普惠金融对企业数字化转型的影响——基于A股上市公司的研究

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工业技术经济 2025年第1期44卷 67-74页

作者：姚震宇秦薇南京审计大学经济学院南京211815

数字普惠金融对企业数字化发挥引导和促转作用。本文将数字普惠金融2013~2023年市级数据与中国上市企业数据进行匹配,深入研究数字普惠金融对企业数字化转型的影响。研究发现:数字普惠金融的发展对企业数字化转型有显著驱动作用,二者之... 详细信息

数字普惠金融对企业数字化发挥引导和促转作用。本文将数字普惠金融2013~2023年市级数据与中国上市企业数据进行匹配,深入研究数字普惠金融对企业数字化转型的影响。研究发现:数字普惠金融的发展对企业数字化转型有显著驱动作用,二者之间的非线性影响存在门槛效应,这种作用在非国有企业、小型企业和高科技企业中更为明显。进一步研究二者之间的传导机制,发现数字普惠金融通过3个渠道助力企业数字化转型:缓解融资约束、优化金融错配、加大研发投入。据此,本文提出了数字普惠金融服务实体经济促进企业数字化转型的政策建议。

关键词：数字普惠金融企业数字化转型面板固定效应模型融资约束门槛效应金融错配研发投入数实融合

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Progress of organic magnetic materials

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Science China(Physics,Mechanics & Astronomy) 2019年第7期62卷 22-33页

作者： Mengmeng wei Yingcai Fan wei qin State Key Laboratory of Crystal Materials School of Physics Shandong University School of Information and Electronic Engineering Shandong Technology and Business University

Over the past years, the development of magnetic materials has been intensively explored, both for fundamental research and technological applications. Particularly, several materials with large magnetoresistance effect have received significant *** this study, we provide an analysis of the progress of organic magnetic materials and organic magnetoelectric complexes, thus paving the way for the understanding of organic magnetism and magnetoelectric coupling mechanisms. In addition, this analysis provides us a critical guide for future organic magnetic material design and fabrication.

关键词： organic materials magnetism magnetoelectric coupling effect

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Relation Between Dimension and Angular Momentum for Radially Symmetric Potential in N-Dimensional Space

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Communications in Theoretical Physics 2006年第3X期46卷 429-434页

作者： ZHAO wei-qin China Center of Advanced Science and Technology (CCAST) (World Lab.) P.O. Box 8730 Beijing 100080 China Institute of High Energy Physics the Chinese Academy of Sciences P.O. Box 918(4-1) Beijing 100049 China

It is proved that when solving SchrSdinger equations for radially symmetric potentials the effect of higher dimensions on the radial wave function is equivalent to the effect of higher angular momenta in lower-dimensi... 详细信息

关键词： N-dimensional Schrodinger equation radially symmetric potential dimension and angular momentum

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Research on the Influence of Helical Strakes on Dynamic Response of Floating Wind Turbine Platform

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China Ocean Engineering 2017年第2期31卷 131-140页

作者： DING qin-wei LI Chun School of Energy and Power Engineering University of Shanghai for Science and Technology Shanghai 200093 China Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering Shanghai 200093 China

The stability of platform structure is the paramount guarantee of the safe operation of the offshore floating wind turbine. The NREL 5MW floating wind turbine is established based on the OC3-Hywind Spar Buoy platform with the supplement of helical strakes for the purpose to analyze the impact of helical strakes on the dynamic response of the floating wind turbine Spar platform. The dynamic response of floating wind turbine Spar platform under wind, wave and current loading from the impact of number, height and pitch ratio of the helical strakes is analysed by the radiation and diffraction theory, the finite element method and orthogonal design method. The result reveals that the helical strakes can effectively inhibit the dynamic response of the platform but enlarge the wave exciting force; the best parameter combination is two pieces of helical strakes with the height of 15%D （D is the diameter of the platform） and the pitch ratio of 5; the height of the helical strake and its pitch ratio have significant influence on pitch response.

关键词： floating wind turbine platform helical strakes orthogonal design

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Variational-Iterative Solution of Ground State for Central Potential

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Communications in Theoretical Physics 2002年第7期38卷 15-18页

作者： ZHAO wei-qin China Center of Advanced Science and Technology CCAST World Lab. P.O. Box 8730 Beijing 100080 China Institute of High Energy Physics the Chinese Academy of Sciences P.O. Box 9184-1 Beijing 100039 China

The newly developed iterative method based on Green function defined by quadratures along a single trajectory is combined with the variational method to solve the ground state quantum wave function for central *** an example, the method is applied to discuss the ground state solution of Yukawa potential, using Hulthen solution as the trial function.

关键词： iterative solution, variantional method, ground state

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Groundstate with Zero Eigenvalue for Generalized Sombrero-Shaped Potential in N-Dimensional Space

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Communications in Theoretical Physics 2008年第7期50卷 139-141页

作者： ZHAO wei-qin China Center of Advanced Science and Technology （CCAST）（World Lab.） P.O. Box 8730 Beijing 100080 China Institute of High Energy Physics the Chinese Academy of Sciences P.O. Box 918 （4-1） Beijing 100049 China

Based on an iterative method for solving the groundstate of Schrodinger equation, it is found that a kind of generalized Sombrero-shaped potentials in N-dimensional space has groundstates with zero eigenvalue. The res... 详细信息

关键词： iterative solution zero eigenvalue generalized Sombrero-shaped potential

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平衡强化训练对住院老年精神分裂症患者平衡能力的影响:一项随机对照试验

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中国全科医学 2025年第2期28卷 193-199页

作者：秦伟涂刚英万小梅王芳江西省精神卫生中心护理部江西省南昌市330029 南昌大学附属精神病医院护理部江西省南昌市330029 江西省精神卫生中心老年科江西省南昌市330029

背景住院老年精神疾病患者跌倒发生率呈上升趋势,而运动不足和久坐不动的生活方式成为住院老年患者的现状,平衡训练可以有效减少跌倒已被证实,但在精神科运用甚少。目的探讨平衡强化训练对住院老年精神分裂症患者平衡能力的影响。方法选... 详细信息

背景住院老年精神疾病患者跌倒发生率呈上升趋势,而运动不足和久坐不动的生活方式成为住院老年患者的现状,平衡训练可以有效减少跌倒已被证实,但在精神科运用甚少。目的探讨平衡强化训练对住院老年精神分裂症患者平衡能力的影响。方法选取2023年江西省某三级甲等精神专科医院老年科住院精神分裂症患者72例作为研究对象,采用随机数字表法分为试验组(36例)和对照组(36例)。对照组采用常规康复训练,试验组在对照组基础上采用平衡强化训练方案进行干预,在干预前及干预4、12周后,使用Berg平衡量表(BBS)和中文版Barthel指数(BI)以及国际版跌倒效能量表(FES-I)对两组患者进行评估。结果共62例患者完成训练,其中试验组30例,对照组32例。两因素重复测量方差分析显示,组别与时间对BBS、BI评分存在交互作用(P0.05),时间对BBS、BI评分主效应均显著(P0.05);时间对FES-I总分及室内、室外活动评分主效应均显著(P<0.05)。干预12周,试验组FES-I总分及室内、室外活动评分高于对照组(P<0.05)。组内比较显示,试验组干预4周FES-I总分及室内、室外活动评分均高于干预前(P<0.05);试验组干预12周FES-I总分及室内、室外活动评分均高于干预前、干预4周(P<0.05)。结论平衡强化训练方案可有效提高住院老年精神分裂症患者平衡能力、生活自理能力及跌倒自我效能,降低跌倒风险。

关键词：精神分裂症老年人平衡强化训练平衡能力跌倒随机对照试验

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Recovery of valuable metals from waste diamond cutters through ammonia–ammonium sulfate leaching

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International Journal of Minerals,Metallurgy and Materials 2017年第12期24卷 1352-1360页

作者： Ping Xue Guang-qiang Li Yong-xiang Yang qin-wei qin Ming-xing wei Key Laboratory for Ferrous Metallurgy and Resource Utilization of Ministry of Education Wuhan University of Science and Technology School of Electromechanical and Architectural Engineering Jianghan University Department of Materials Science and Engineering Delft University of Technology

Copper and zinc were recovered from waste diamond cutters through leaching with an ammonia–ammonium sulfate system and air as an oxidant. The effects of experimental parameters on the leaching process were investigated, and the potential–pH(E–pH) diagrams of Cu–NH_3–SO_4^(2-)–H_2O and Zn–NH_3–SO_4^(-2)–H_2O at 25°C were drawn. Results showed that the optimal parameters for the leaching reaction are as follows: reaction temperature, 45°C; leaching duration, 3 h; liquid-to-solid ratio, 50:1(mL/g); stirring speed, 200 r/min; ammonia concentration, 4.0 mol/L; ammonium sulfate concentration, 1.0 mol/L; and air flow rate, 0.2 L/min. The results of the kinetics study indicated that the leaching is controlled by the surface chemical reaction at temperatures below 35°C, and the leaching is controlled by diffusion through the product layer at temperatures above 35°C.

关键词： recovery waste diamond cutters renewable resources ammonia–ammonium sulfate leaching kinetics

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