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A self-adaptive inorganic in-situ separator by particle crosslinking for nonflammable lithium-ion batteries

Journal of Energy Chemistry 2025年第1期100卷 469-480页

作者： Jiarui Yang Jiuzhou Liu Wenrui Cai Ziyu zhao Shan Wang Lu He Shanshan Lv Zhiwei Zhu zhongfeng Ji Guojiang Wen Hua Li Yuanming Zhai Xuewei Fu wei Yang Yu Wang College of Polymer Science and Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University

All-safe liquid-state lithium-ion batteries(ASLS-LIBs) is of great interest as they can potentially combine the safety of all-solid-state batteries with the high performance and low manufacturing cost of traditional liquid-state LIBs. However, the practical success of ASLS-LIBs is bottlenecked by the lack of advanced separator technology that can simultaneously realize high performances in puncturing-tolerability,fire-resistance, and importantly, wetting-capability with non-flammable liquid-electrolytes. Here, we propose a concept of inorganic in-situ separator(IISS) by hybrid-sol physical crosslinking directly onto the electrode surface to address the above challenges. Particularly, the hybrid-sol is designed with silica nanoparticles as the building block and poly(vinylidene difluoride) nanoparticles as the crosslinking agent. The critical factors for controlling the IISS microstructures and properties have been systematically investigated. The advantages of the IISS have been confirmed by its fast wetting with various fireresistant liquid-electrolytes, customizable thickness and porous structures, robust interface with planar or three-dimensional(3D)-structured electrodes, and importantly, unexpected self-adaptability against puncturing. Enabled by the above merits, a fire-resistant ASLS-LIB is successfully assembled and demonstrated with stable electrochemical performance. This sol-crosslinked IISS may open an avenue for the studies on the next-generation separator technology, cell assembling, solid electrolyte processing as well as non-flammable secondary batteries.

关键词： Silica nanoparticles

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五宝场上三叠统须家河组构造-沉积体系

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天然气技术 2009年第1期3卷 30-33页

作者：蒋裕强葛忠伟沈昭国西南石油大学资源与环境学院四川成都610500

川东北五宝场地区的构造和断层系统从印支早期到喜山晚期经历了雏形、埋深、形成和改造4个阶段,形成了现今向西南突出的构造样式。通过岩心观察、野外剖面、测井曲线识别,认为研究区须家河组主要发育湿地扇、辫状河、辫状河三角洲、湖泊... 详细信息

川东北五宝场地区的构造和断层系统从印支早期到喜山晚期经历了雏形、埋深、形成和改造4个阶段,形成了现今向西南突出的构造样式。通过岩心观察、野外剖面、测井曲线识别,认为研究区须家河组主要发育湿地扇、辫状河、辫状河三角洲、湖泊4种沉积体系,须家河组主要为辫状河—辫状河三角洲平原环境,在川东北地区构造发展演化过程的基础上,分析得到须家河组的沉积体系在平面上受构造控制作用明显的结论。

关键词：五宝场地区构造演化沉积体系须家河组

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单克隆抗体CD_4及CD_8联合环孢素A治疗重型再生障碍性贫血临床研究

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中华内科杂志 2005年第10期44卷 734-736页

作者：衣旭华林春燕郝志华闫慎民赵春燕仲兆伟山东省烟台市桃村中心医院血液科

目的探寻降低重型再生障碍性贫血(SAA)患者早期死亡率以及提高疗效的安全方案。方法采用单克隆抗体CD4、CD8联合环孢素A(CSA)(治疗组)治疗SAA21例,并与抗淋巴细胞球蛋白(ALG)联合CSA(对照组)治疗SAA20例进行比较。结果两组总有效率分别... 详细信息

目的探寻降低重型再生障碍性贫血(SAA)患者早期死亡率以及提高疗效的安全方案。方法采用单克隆抗体CD4、CD8联合环孢素A(CSA)(治疗组)治疗SAA21例,并与抗淋巴细胞球蛋白(ALG)联合CSA(对照组)治疗SAA20例进行比较。结果两组总有效率分别为76·2%与65·0%相近(P>0·05),但早期血象的恢复快于对照组(P<0·05),早期感染率低于对照组(P<0·05)。而发热反应、血清病反应等副作用则显著少于对照组(P<0·01)。结论单克隆抗体CD4、CD8联合CSA是安全方便有效的治疗SAA方案。

关键词：贫血,再生障碍性抗体,单克隆环孢菌素

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Preparation of Na specific absorbent and application of sodium removal from ammonium tungstate solution

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Transactions of Nonferrous Metals Society of China 2014年第3期24卷 854-860页

作者：赵中伟杨茂峰何利华张家靓陈星宇刘旭恒中南大学冶金与环境学院长沙410083 稀有金属冶金及材料制备湖南省重点实验室长沙410083

An adsorbent, Na1.6Al0.6Ti1.4（PO4）3 （or NATP）, was prepared by controlled crystallization of glasses in the Na2O-Al2O3-CaO-TiO2-P2O5 system. The crystalline phases characterized by X-ray diffraction （XRD） show that the sample glasses crystallizes into two phases, i.e. NATP and Ca9Al（PO4）7, while the Ca9Al（PO4）7 phase can be leached selectively with HCl, leaving a massive number of pores in the material. Through the experimental research, the effects of contact time, solution pH, and the initial concentration of Na＋on the cation exchange properties were investigated. The batch sorption kinetics and equilibria can be described by Pseudo-second-order kinetic equations and Langmuir isotherm equations respectively. Furthermore, the experiments with an industrial solution show that the removal rate of sodium from industrial （NH4）2WO4 is higher than 97%. Cycle experiment also shows that the NATP has a good cyclic performance.

关键词： Na specific adsorbent sodium removal ammonium tungstate purification

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基于Matlab对AC/DC/AC电源的死区效应的谐波分析及仿真

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通信电源技术 2005年第2期22卷 28-30,50页

作者：蒋国栋韦忠朝钟运平华中科技大学湖北武汉430074

对AC/DC/AC电源所固有的死区效应带来的谐波进行了数学分析,得出了在固有谐波基础上死区时间对于此类型电源所产生的电压波形的影响。并利用Matlab软件对此类电源建立了仿真模型,特别是利用已知模块实现了死区时间的仿真模型。对于产生... 详细信息

对AC/DC/AC电源所固有的死区效应带来的谐波进行了数学分析,得出了在固有谐波基础上死区时间对于此类型电源所产生的电压波形的影响。并利用Matlab软件对此类电源建立了仿真模型,特别是利用已知模块实现了死区时间的仿真模型。对于产生的谐波进行了FFT分解,重点分析了死区效应使电源电压波形所产生的谐波分量。

关键词：死区谐波 Matlab软件

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基于2_D系统理论的变初始条件线性系统的开闭环学习控制

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自动化技术与应用 2007年第7期26卷 16-18页

作者：钟兆伟郝修清西安石油大学理学院西安710065

对于具有重复运动特性的系统,迭代学习控制是一种简便且行之有效的方法,考虑到系统每次运行初始值的不确定性,利用二维系统理论设计了开闭环迭代学习控制器,并给出了控制收敛的充分条件,用仿真试验验证其有效性.

关键词：迭代学习控制变初始条件 2_D系统理论

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Quantitative reconstruction of salinity and precipitation changes in Central Asia over the past 3200 years using diatom and pollen records of lacustrine sediment in Aibi Lake of SW Junggar Basin

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Journal of Earth Science 2025年

作者： Long Pan Guoqiang Li Xiaoyan Wang Ming Jin Xinrong He Luo Qin zhong Wang Wenwei zhao Chunzhu Chen Yuanlu Liu Jin Yang Lele Shu Key Laboratory of Western China's Environmental Systems (Ministry of Education)， College of Earth and Environmental Sciences， Lanzhou University College of Earth Sciences， Chengdu University of Technology School of Geographic Science， Nantong University Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions， Northwest Institute of Eco-Environment and Resources， Chinese Academy of Sciences

The response of lake environments in arid Central Asia to climate change during the Late Holocene over the centennial to millennial timescales remains contentious. The reason that primarily paleoenvironmental proxies interpreting diverse and the scarcity of accurate quantitative reconstruction records. In this study， we employed diatoms and pollen records from lacustrine sediment in the Aibi Lake of SW Junggar Basin to quantitatively reconstruct salinity and watershed precipitation amounts while exploring the associated forcing mechanism. The results indicate that Aibi Lake salinity varied between 2 g/L and 47 g/L during the Late Holocene period， indicating a generally brackish environment， and corresponding to prevailing Tryblionella granulata diatom in the lake basin. Westerly-dominated annual precipitation varied between 250 mm and 320 mm during the Late Holocene period in the basin， exhibiting a generally semi-arid environment and prevailing desert steppe vegetation. The Aibi Lake has a low salinity of average value of ～15 g/L. It exhibits elevated precipitation (average value of ～280 mm) during the periods of the Roman Warm Period (2900-1990 cal yr BP)， Dark Age Cold Period (1570-1140 cal yr BP)， and Little Ice Age (590-120 cal yr BP). The reconstructed precipitation and salinity exhibit a periodicity of ～200 years， which is consistent with the cycle of phase changes of the North Atlantic Oscillation (NAO) and Total Solar Irradiance (TSI). This correlation suggests that variations in NOA and TSI significantly influence the precipitation and salinity changes in Central Asia over centennial to millennial timescales.

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Synthesis of chiral phosphine derivatives through a copper（I）-catalyzed desymmetric SNAr reaction

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Science China Chemistry 2025年

作者： Shuai Zhang Pei-Zhi Liu Yan-Bo Li Qi Zhang Jun-zhao Xiao Yi-Fan Wang Tian-Yu wei Jia-wei Jiang Ye Wang Qian Peng Liang Yin Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences State Key Laboratory of Elemento-Organic Chemistry and Tianjin Key Laboratory of Biosensing and Molecular Recognition College of Chemistry Frontiers Science Center for New Organic Matter Nankai University Haihe Laboratory of Sustainable Chemical Transformations

Axially chiral phosphines are a class of extremely important ligands in asymmetric catalysis. Herein, an unprecedented copper（I）-catalyzed asymmetric SNAr reaction with HP（S）R2is uncovered, which delivers a series of axially chiral phosphine derivatives in high yields with excellent enantioselectivity. Furthermore, the diastereoselective reaction with the kinetic resolution of racemic HP（S）ArR proceeds smoothly, providing the products with moderate diastereoselectivity and excellent enantioselectivity. Control experiments indicate that HP（S）Ph2is much more active than HPPh2and HP（O）Ph2as the pronucleophile in the present reaction. It is found that the SNAr reaction （the first SNAr） proceeds in a desymmetric manner, providing the desired chiral products while a continued SNAr reaction （the second SNAr） slightly occurs in a kinetic resolution manner in the present catalytic system, which enhances the ee of the desired chiral products. DFTcalculations support a concerted reaction pathway rather than a step-wise mechanism. Finally, axially chiral olefin-phosphines produced by the present method work as suitable ligands in Pdcatalyzed asymmetric allylic substitution with C-, N-, and O-nucleophiles and Rh-catalyzed asymmetric addition of arylboronic acid to benzil.

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Pulsed dynamic electrolysis enhanced PEMWE hydrogen production:Revealing the effects of pulsed electric fields on protons mass transport and hydrogen bubble escape

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Journal of Energy Chemistry 2025年第1期100卷 201-214页

作者： Xuewei Zhang wei Zhou Yuming Huang Liang Xie Tonghui Li Huimin Kang Lijie Wang Yang Yu Yani Ding Junfeng Li Jiaxiang Chen Miaoting Sun Shuo Cheng Xiaoxiao Meng Jihui Gao Guangbo zhao School of Energy Science and Engineering Harbin Institute of Technology China Datang Technology Innovation Co. Ltd

The transition of hydrogen sourcing from carbon-intensive to water-based methodologies is underway,with renewable energy-powered proton exchange membrane water electrolysis （PEMWE） emerging as the preeminent pathway for hydrogen *** remarkable advancements in this field,confronting the sluggish electrochemical kinetics and inherent high-energy consumption arising from deteriorated mass transport within PEMWE systems remains a formidable *** impediment stems primarily from the hindered protons mass transfer and the untimely hydrogen bubbles *** address these challenges,we harness the inherent variability of electrical energy and introduce an innovative pulsed dynamic water electrolysis *** to constant voltage electrolysis (hydrogen production rate:51.6 m L h-1,energy consumption:5.37 kWh Nm-3H2),this strategy (hydrogen production rate:66 m L h-1,energy consumption:3.83 kWh Nm-3H2) increases the hydrogen production rate by approximately 27%and reduces the energy consumption by about 28%.Furthermore,we demonstrate the practicality of this system by integrating it with an off-grid photovoltaic （PV） system designed for outdoor operation,successfully driving a hydrogen production current of up to 500 mA under an average voltage of approximately 2 *** combined results of in-situ characterization and finite element analysis reveal the performance enhancement mechanism:pulsed dynamic electrolysis （PDE） dramatically accelerates the enrichment of protons at the electrode/solution interface and facilitates the release of bubbles on the electrode *** such,PDE-enhanced PEMWE represents a synergistic advancement,concurrently enhancing both the hydrogen generation reaction and associated transport *** promising technology not only redefines the landscape of electrolysis-based hydrogen production but also holds immense potential for broadening its application across a diverse spectrum of electrocatalytic endeavors.

关键词： Electrolysis

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Decision making module based on stochastic magnetic tunnel junctions

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 202-209页

作者： Yifan Miao Li zhao Yajun Zhang Zhe Yuan Center for Advanced Quantum Studies and Department of Physics Beijing Normal University Institute for Nanoelectric Devices and Quantum Computing Fudan University Interdisciplinary Center for Theoretical Physics and Information Sciences Fudan University

In biological neural systems, noise is ubiquitous but does not affect the correct decisions made in the complex cognitive ***-making in biological neural system is typically achieved by accumulating input information over a period of *** by recent developments in neurosciences, we design a decision-making module based on spintronic devices, utilizing superparamagnetic tunnel junctions as artificial neurons. The feasibility of this decision-making module is verified through circuit simulations. Taking a multi-layer perceptron as an example, the module significantly improves the accuracy of the perceptron in the handwritten digit recognition task. Furthermore, the spintronic decision-making module offers advantages over the conventional pooling methods, such as adaptive decision time, high performance and the absence of analog-to-digital conversion. The decision-making module is flexible to be integrated into artificial neural networks and provides a general yet effective solution to enhance performance against device noise.

关键词： neuromorphic computing spintronics magnetic tunnel junction neural networks

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