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Copolymer-assisted Polypropylene Separator for Fast and Uniform Lithium Ion Transport in Lithium-ion Batteries

Chinese Journal of Polymer Science 2020年第12期38卷 1313-1324页

作者： Yan Yan qing-ran kong Chuang-Chao Sun Jia-Jia Yuan Zheng Huang Li-Feng Fang Bao-Ku Zhua You-Zhi Song Key Laboratory of Macromolecule Synthesis and Functionalization(Ministry of Education) ERC of Membrane and Water Treatment(Ministry of Education)Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China Institute ofNuclear and New Energy Technology Tsinghua UniversityBeijing W0084China

In lithium-ion batteries(LIBs),separators play a vital role in lithium-ion(Li+)transport,and thus affect rate performance,battery life,and ***,a new kind of multifunctional copolymer poly(acrylonitrile-co-lithium acrylate-co-butyl acrylate)(PAAB-Li)is synthesized through soap-free emulsion polymerization,and is used to form homogeneous-covered separator based on PP matrix by a simple dip-annealing *** to the bare PP separator,the modified separators with PAAB-Li enable higher ionic conductivity,higher lithium ion transference number(increased from 0.360 to 0.525),and lower interface impedance(reduced from 155Ω to 34Ω).It has been indicated that PAAB-Li functional layer significantly promotes the fast transport of Li+and improves the compatibility of the separator/electrolyte-electrode *** LiCo02/graphite cells with the PAAB-Li-assisted separator demonstrate excellent cycle stability and rate *** addition,the Li symmetric cells with the modified separator stably cycle over 800 h,indicating the functional layer effectively suppresses the lithium dendrite *** facile strategy can be easily applied to LIBs requiring high safety and even be scalable to Li metal ***,the possible mechanism of the PAAB-Li functional layer promoting fast and uniform Li+transport is discussed in this paper.

关键词： Polyelectrolytes Polypropylene separator Lithium ion transport Dendrite-free Lithium-ion battery

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Non-dispersive solvent extraction ofp-toluic acid from purifiedterephthalic acid plant wastewater with p-xylene as extractant

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2016年第10期17卷 828-840页

作者： qing-ran kong You-wei CHENG Li-jun WANG Xi LI College of Chemieal and Biological Engineering Zhejiang University Hangzhou 310027 China

Non-dispersive solvent extraction （NDSE） with p-xylene as extractant was employed as a novel separation methodto recover both ρ-toluic （PT） acid and water from purified terephthalic acid （PTA） wastewater. The mass transport behavior ofPT acid from aqueous solution to ρ-xylene was investigated by experiments and numerical simulation. Experiments showed thatNDSE is feasible and effective. Residual PT acid in the raffinate can be reduced to lower than the permitted limit of wastewaterre-use （100 g/m^3） with extraction time longer than 60 s in industrial conditions. A mathematical model of PT acid mass transportwas developed to optimize the membrane module performance. The model was validated with the experimental results withrelative errors of less than 6%. Numerical analysis for mass transfer through the lumen side, the porous membrane layer, and theshell side showed that PT acid transport in the aqueous solution is the rate determining step. The effects of the membrane andoperating parameters on membrane module performance were investigated by means of computational simulations. The keyparameters suggested for industrial NDSE design are： fiber inner radius r1=200-250 μm, extraction time tc=50-60 s, aqueous/organic volumetric ratio a/o=9.0, and temperature T-318 K.

关键词： Non-dispersive solvent extraction (NDSE), Purified terephthalie acid (PTA) wastewater, p-toluic (PT) acid,ρ-xylene (PX), Mass transfer

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中空纤维膜脱氧过程中Dean涡强化传质研究（英文）

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2019年第8期20卷 601-613页

作者： qing-ran kong Yi-zhen ZHANG Hua TIAN Li-feng FANG Ming-yong ZHOU Li-ping ZHU Bao-ku ZHU Key Laboratory of Macromolecule Synthesis and Functionalization Ministry of Education Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province ERC of Membrane and Water Treatment Ministry of Education Department of Polymer Science and Engineering Zhejiang University

目的:在螺旋中空纤维膜脱氧过程中引入了Dean涡,与线型中空纤维膜脱氧过程相比传质速率显著提升。本文旨在建立新的螺旋中空纤维膜脱氧过程传质模型,探讨管程流体雷诺数、中空纤维膜结构参数、壳程真空度和操作温度对Dean涡强化传质效... 详细信息

目的:在螺旋中空纤维膜脱氧过程中引入了Dean涡,与线型中空纤维膜脱氧过程相比传质速率显著提升。本文旨在建立新的螺旋中空纤维膜脱氧过程传质模型,探讨管程流体雷诺数、中空纤维膜结构参数、壳程真空度和操作温度对Dean涡强化传质效果的影响,并优化螺旋中空纤维膜脱氧过程操作参数。创新点:1.建立新的螺旋中空纤维膜脱氧过程传质模型;2.该传质模型可以应用于任何螺旋中空纤维膜气-液过程的传质行为描述。方法:1.实验研究管程流体雷诺数、中空纤维膜结构参数、壳程真空度和操作温度对Dean涡强化传质效果的影响,并与线型中空纤维膜传质进行对比。2.利用螺旋坐标系下的质量连续性方程以及Dean涡的摄动解描述管程溶质的传质行为;利用改进的尘气模型描述膜孔道内多组份气体的扩散行为;耦合建立新的螺旋中空纤维膜脱氧过程传质模型,并与实验结果进行比较。3.模拟脱氧过程的氧、氮、水三种组分的浓度分布,优化螺旋中空纤维膜脱氧过程的膜结构参数和操作参数。结论:1.实验和模拟结果均证实Dean涡可以有效提升脱氧传质速率,最大传质增强因子为2.2。2. Dean涡主要受到管程雷诺数和中空纤维膜曲率的影响;当管程雷诺数较大时,中空纤维膜即使存在很小的曲率,传质的速率也有显著的提升。

关键词：传质中空纤维膜水脱氧 Dean涡

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Micro-strain regulation strategy to stabilize perovskite lattice based on the categories and impact of strain on perovskite solar cells

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Journal of Energy Chemistry 2025年第1期100卷 578-604页

作者： Caixia Li Wenwu Liu Shiji Da Lingbin kong Fen ran State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals Lanzhou University of Technology School of Materials Science and Engineering Lanzhou University of Technology

Photovoltaic metal halide perovskite solar cells(PSCs) convert light to electricity more efficiently than crystalline silicon cells, and the cost of materials used to make them is lower than that of silicon *** efficiency is not a core issue affecting the application of perovskite solar cells in special *** present, stability is the major technical encounters that hinders its further commercial development. Microstrain in PSCs is currently a significant factor responsible for the device's instability. Strain-induced ion migration is widely believed to accelerate perovskite degradation even when external stimuli are ***, it is imperative to study strain to enhance the stability of PSCs. This paper reviews recent developments to understand strain's origin and effect mechanisms on performance of PSCs, including ion migration,failure behavior, defect formation, and its effect on photoelectric properties, stability, and ***, several well-known strain management strategies are systematically introduced based on the strain effect mechanism and strain engineering on the film, providing more clues for further preparation with increased stability. The manipulation of external physical strain applied from films to entire devices has been extensively studied. Furthermore, recommendations for future research directions and chemical approaches have been provided. It is emphasized that strain engineering plays a crucial role in improving the efficiency and longevity of PSCs. Tensile strain causes rapid degradation, while moderate compressive strain and external strain control could improve properties and stability. Efforts should focus on controlling compressive strain to mitigate residual tensile strain and introducing it in a controlled manner. Future research endeavors may focus on exploring these pathways to improve the efficiency and lifespan of PSCs.

关键词： Halide perovskite solar cells Strain origins Strain effects Strain management

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外源中心体在哺乳动物胚胎发育中的遗传机制

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细胞生物学杂志 2008年第5期30卷 605-610页

作者：孔庆然刘忠华东北农业大学生命科学学院哈尔滨150030

中心体是一个非膜包被的半保留细胞器,由一对相互垂直的圆柱形中心粒及其周围大量的高电子密度的蛋白质——中心体基质(pericentriolar material,PCM)组成。在所有哺乳动物细胞中,中心体(centrosome)作为主要的微管组织中心(microtubule... 详细信息

中心体是一个非膜包被的半保留细胞器,由一对相互垂直的圆柱形中心粒及其周围大量的高电子密度的蛋白质——中心体基质(pericentriolar material,PCM)组成。在所有哺乳动物细胞中,中心体(centrosome)作为主要的微管组织中心(microtubule organizing centers,MTOCs),起到组装和稳定微管的关键功能。在大多数哺乳动物精子形成过程中,精子保留了近端中心粒,失去了大部分的中心体旁蛋白和远端中心粒,而在卵母细胞形成过程中两个中心粒被逐渐降解,主要的中心体旁蛋白被保留了下来,弥散于卵胞质中。受精后,在卵母细胞中精子中心粒被进一步降解,来源于卵母细胞和精子的中心体旁蛋白形成受精卵的MTOCs在胚胎分裂过程中行使功能。但在小鼠等啮齿类动物精子形成过程中,两个中心粒全部被降解,因此受精卵中的MTOCs主要由来源于卵母细胞中心体旁蛋白组成。在大多数哺乳动物核移植胚胎中,外源中心粒在胚胎1-细胞期即被降解,而是来源于供体细胞和受体卵母细胞的中心体旁蛋白形成重构胚的MTOCs指导纺锤体形成,中心粒是在囊胚期才从头合成的。在灵长类中,来源于精子的中心粒能与PCM一起组成典型的中心体在胚胎分裂过程中行使功能,但在其核移植胚胎中,体细胞中心体和去核卵母细胞中剩余的中心体旁蛋白不能有效的组装形成功能性中心体,这可能是灵长类哺乳动物体细胞克隆失败的一个关键原因。

关键词：中心体受精核移植胚胎发育

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The School that Changes Mindsets

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China Today 2025年第1期74卷 62-64页

作者： GUO qing kong SIQI 不详

China’s highest-altitude primary school is not only teaching children of farmers and herders but their parents as *** Sinopec Primary School in Nagqu,a city in Xizang Autonomous Region in southwest China,is known as the school“the closest to the sky”due to its high-altitude location-a breathtaking 4,700 meters above sea *** by oil and gas giant Sinopec as part of its corporate social responsibility,the school opened in 2012 and has since become a microcosm of China’s drive for education,especially in remote and rural areas,to ensure that no one is left behind.

关键词： altitude farmers southwest

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37例可待因类止咳水成瘾患者临床特征分析

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中国药物滥用防治杂志 2018年第2期24卷 70-72页

作者：杨传青王周然孔志杨梅深圳市康宁医院深圳市精神卫生中心深圳518020

目的:了解可待因类止咳水成瘾患者的临床特征。方法:使用自制调查表,了解患者一般资料及临床资料,使用SPSS 21.0对结果进行统计分析。结果:可待因类止咳水成瘾以青壮年男性为主,开始滥用止咳水年龄为(18.0±3.3)岁,至入院时使用时间为(... 详细信息

目的:了解可待因类止咳水成瘾患者的临床特征。方法:使用自制调查表,了解患者一般资料及临床资料,使用SPSS 21.0对结果进行统计分析。结果:可待因类止咳水成瘾以青壮年男性为主,开始滥用止咳水年龄为(18.0±3.3)岁,至入院时使用时间为(8.8±4.2)年,37.8%合并使用新型毒品,64.9%患者为无业,获得止咳水途径为非法购买。结论:可待因类止咳水初次滥用年龄偏小,常同时伴有其他物质成瘾,止咳水成瘾患者成年后就业率偏低,应在初中或高中阶段开展止咳水滥用危害的相关教育。

关键词：可待因类止咳水成瘾临床特征

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Ancient Art Retains Splendor in New Era

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China Today 2025年第1期74卷 74-75页

作者： GUO qing 不详

With government support,more young people are studying Thangka art,securing its innovative *** 1,300-year-old Thangka art,religious painting on woven material,has been lauded as an illustrated encyclopedia of Tibetan *** unique artistic and cultural value earned it a place on China’s intangible cultural heritage list in *** institution tasked with preserving and developing this ancient art is the Tibet Academy of Thangka(TAT)in *** focuses on the Mansar School of Thangka *** can observe the whole process of creating a Mansar Thangka piece,from sketching to adding the final touch.

关键词： religious earned sketch

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China-India: Ties that Bind

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China Today 2025年第1期74卷 59-61页

作者： GUO qing 不详

From international student to professor,Tripathi Mani shares his thoughts on Chinese and Indian cultures and the beneficial exchanges between *** Vivek Mani first learned about China from bedtime stories told by his father,a Sanskrit teacher in rural Bihar,a state in east *** of the stories were about the Chinese monk Xuanzang’s adventures during his long journey to India to find Buddhist *** kindled the young boy’s interest in China and the desire to visit it one day.

关键词： India Indian desire

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A low redox potential and long life organic anode material for sodium-ion batteries

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Journal of Energy Chemistry 2025年第1期100卷 557-564页

作者： Zhi Li Yang Wei Kang Zhou Xin Huang Xing Zhou Jie Xu Taoyi kong Junwei Lucas Bao Xiaoli Dong Yonggang Wang Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Institute of New Energy Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) Fudan University Department of Chemistry Boston College School of Materials Science and Engineering Anhui University of Technology

Sodium-ion batteries （SIBs） with organic electrodes are an emerging research direction due to the sustainability of organic materials based on elements like C,H,O,and sodium ***,organic electrode materials for SIBs are mainly used as cathodes because of their relatively high redox potentials（>1 V）.Organic electrodes with low redox potential that can be used as anode are ***,a novel organic anode material （tetrasodium 1,4,5,8-naphthalenetetracarboxylate,Na4TDC） has been developed with low redox potential （<0.7 V） and excellent cyclic *** three-sodium storage mechanism was demonstrated with various in-situ/ex-situ spectroscopy and theoretical calculations,showing a high capacity of 208 mAh/g and an average decay rate of merely 0.022%per ***,the Na4TDC-hard carbon composite can further acquire improved capacity and cycling stability for 1200 cycles even with a high mass loading of up to 20 mg *** pairing with a thick Na3V2（PO4）3cathode (20.6 mg cm-2),the as-fabricated full cell exhibited high operating voltage （2.8 V）,excellent rate performance and cycling stability with a high capacity retention of 88.7% after 200 cycles,well highlighting the Na4TDC anode material for SIBs.

关键词： Organic anode material Low redox potential Composite anode Sodium-ion batteries

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