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Hollow Multishelled Structure: Synthesis Chemistry and Application

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Chemical Research in Chinese Universities 2024年第3期40卷 346-393页

作者： MAO Dan WANG Chao LI Wei ZHOU Liang LIU Jian ZHENG Zjian ZHAO Yong CAO An-min WANG Shutao HUANG Jiaxing HUO Fengwei CHEN Hongyu MAI Liqiang YU Ranbo WANG Lianzhou LU Yunfeng YU Chengzhong yang Qihua yang zhenzhong ZENG Hua Chun ZHAO Hujun TANG Zhiyong ZHAO Dongyuan WANG Dan State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChineseAcademy of SciencesBeijing 100190P.R.China Key Laboratory of Biopharmaceutical Preparation and Delivery Chinese Academy of SciencesBejing 100190P.R.China School of Fashion and Textiles The Hong Kong Polytechnic UniversityHong Kong SARP.R.China Department of Chemistry Fudan UniversityShanghai 200433P.R.China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070P.R.China State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023P.R.China School of Chemistry Beihang UniversityBejing 100191P.R.China CAS Key Laboratory of Molecular Nanostructure and Nanotechnology and Beijing National Laboratory for Molecular Sciences Institute of ChemistryChinese Academy of SciencesBeijing 100190P.R.China CAS Key Laboratory of Bio-inspired Materials and Interfacial Science Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190P.R.China School of Engineering Westlake UniversityHangzhou 310024P.R.China School of Flexible Electronics(Future Technologies) Nanjing Tech UniversityNanjing 211816P.R.China School of Science Westlake UniversityHangzhou 310024P.R.China School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070P.R.China School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083P.R.China School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology The University of QueenslandBrisbaneQueensland 4072Australia College of Life Science and Technology Bejing University of Chemical TechnologyBejing 100029P.R.China School of Chemistry and Molecular Engineering East China Normal UniversityShanghai 200241P.R.China College of Life Sciences Zhejiang Normal UniversityJinhua 321004P.R.China Department of Chemical Engineering Tsinghua UniversityBeijing 100

Hollow multishelled structure(HoMS),a promising and complex multifunctional structural system,features at least two shells that are separated by internal *** unique structure endows it with numerous advantages including low density,high loading capacity,large specific surface area,facilitated mass transport,and multiple spatial confinement *** the past twenty years,benefiting from the booming development of synthesis methods,various HoMS materials have been prepared and show promising applications in diverse areas.

关键词： Hollow multishelled structure Synthesis chemistry Energy storage Catalysis Electromagnetic wave absorption Drug delivery Sensor

Memristive switching in the surface of a charge-density-wave topological semimetal

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Science Bulletin 2024年第13期69卷 2042-2049页

作者： Jianwen Ma Xianghao Meng Binhua Zhang Yuxiang Wang Yicheng Mou Wenting Lin Yannan Dai Luqiu Chen Haonan Wang Haoqi Wu Jiaming Gu Jiayu Wang Yuhan Du Chunsen Liu Wu Shi zhenzhong yang Bobo Tian Lin Miao Peng Zhou Chun-Gang Duan Changsong Xu Xiang Yuan Cheng Zhang State Key Laboratory of Surface Physics and Institute for Nanoelectronic Devices and Quantum Computing Fudan UniversityShanghai 200433China State Key Laboratory of Precision Spectroscopy East China Normal UniversityShanghai 200241China Key Laboratory of Computational Physical Sciences(Ministry of Education) Institute of Computational Physical SciencesState Key Laboratory of Surface PhysicsDepartment of PhysicsFudan UniversityShanghai 200433China Shanghai Qi Zhi Institute Shanghai 200030China School of Physics Southeast UniversityNanjing 211189China Key Laboratory of Polar Materials and Devices(Ministry of Education) Department of ElectronicsEast China Normal UniversityShanghai 200241China Shanghai Center of Brain–inspired Intelligent Materials and Devices East China Normal UniversityShanghai 200241China State Key Laboratory of ASIC and System School of MicroelectronicsFudan UniversityShanghai 200433China Frontier Institute of Chip and System Fudan UniversityShanghai 200433China Zhangjiang Fudan International Innovation Center Fudan UniversityShanghai 201210China School of Physics and Electronic Science East China Normal UniversityShanghai 200241China

Owing to the outstanding properties provided by nontrivial band topology,topological phases of matter are considered as a promising platform towards low-dissipation electronics,efficient spin-charge conversion,and topological quantum *** ferroelectricity in topological materials enables the non-volatile control of the quantum states,which could greatly facilitate topological electronic ***,ferroelectricity is generally incompatible with systems featuring metallicity due to the screening effect of free *** this study,we report the observation of memristive switching based on the ferroelectric surface state of a topological semimetal(TaSe_(4))*** find that the surface state of(TaSe_(4))2I presents out-of-plane ferroelectric polarization due to surface *** the combination of ferroelectric surface and charge-density-wave-gapped bulk states,an electric-switchable barrier height can be achieved in(TaSe_(4))2I-metal *** employing a multi-terminal-grounding design,we manage to construct a prototype ferroelectric memristor based on(TaSe_(4))2I with on/off ratio up to 103,endurance over 103 cycles,and good retention *** origin of the ferroelectric surface state is further investigated by first-principles calculations,which reveal an interplay between ferroelectricity and band *** emergence of ferroelectricity in(TaSe_(4))2I not only demonstrates it as a rare but essential case of ferroelectric topological materials,but also opens new routes towards the implementation of topological materials in functional electronic devices.

关键词： Topological semimetal Schottky barrier Surface ferroelectricity Memristor

基于人工智能高效近场扫描的瞬态强电磁干扰传导耦合路径可视化

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电子科技大学学报 2024年第4期53卷 495-502页

作者：杨振中谢雨婷许潘邓帅荣中国工程物理研究院微系统与太赫兹研究中心成都610200 中国工程物理研究院电子工程研究所绵阳621000 浙江大学信息与电子工程学院杭州310058

在高压电子系统中,瞬态强电磁干扰会通过空间辐射、传导耦合等方式影响低压控制区的正常工作,在该工况下系统的电磁兼容问题较为突出。该文在时域电流测试与近场扫描结合的基础上,提出了一种改进的人工智能近场扫描算法,可实现强瞬态电... 详细信息

在高压电子系统中,瞬态强电磁干扰会通过空间辐射、传导耦合等方式影响低压控制区的正常工作,在该工况下系统的电磁兼容问题较为突出。该文在时域电流测试与近场扫描结合的基础上,提出了一种改进的人工智能近场扫描算法,可实现强瞬态电磁干扰下传导耦合路径的高效可视化,据此采取了相应的整改措施并解决了系统中的电磁干扰问题。与传统近场扫描方法相比,该文提出的人工智能算法可大幅度提高测试效率。此外,还分析了不同参数的选择对该人工智能算法稳定性的影响,提出了一种自动停止扫描的判决标准,该判决标准使人工智能近场扫描算法不需要人为干预,从而具有更高的智能化与鲁棒性。

关键词：高压电子系统瞬态强电磁干扰近场扫描耦合路径人工智能近场扫描算法

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公路桥梁预制预应力混凝土梁架设技术研究

工程技术研究 2024年第16期9卷 56-58页

作者：杨振中广州诚信公路建设监理咨询有限公司

在公路桥梁工程中，混凝土梁易出现裂缝、露筋、表面缺陷等病害，影响工程施工质量及公路桥梁的通行安全。如何提升公路桥梁的混凝土梁施工质量成为亟待解决的关键问题。预应力工艺具有提高构件强度、减少振动和弹性变形等优点，有利于... 详细信息

在公路桥梁工程中，混凝土梁易出现裂缝、露筋、表面缺陷等病害，影响工程施工质量及公路桥梁的通行安全。如何提升公路桥梁的混凝土梁施工质量成为亟待解决的关键问题。预应力工艺具有提高构件强度、减少振动和弹性变形等优点，有利于降低混凝土梁质量病害的发生率。基于此，文章针对公路桥梁预制预应力混凝土梁架设技术展开研究，旨在提升公路桥梁工程的稳定性和可靠性，保证公路桥梁交付使用后的过往通行车辆安全。

关键词：公路桥梁混凝土梁架设预制预应力钢筋外露

基于专利情报分析的锂离子电池用低温电解液的发展现状和研究进展

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储能科学与技术 2024年第7期13卷 2317-2326页

作者：李征杨振忠王琼胡仁宗国家知识产权局专利局专利审查协作北京中心北京100160 广东省先进储能材料重点实验室华南理工大学材料科学与工程学院广东广州510640 浙江大学衢州研究院浙江衢州324000

锂离子电池已在移动设备、电动交通工具和储能系统等领域得到广泛应用,随着信息化与军事现代化建设的快速发展,锂离子电池的使用需要适应更宽的工作温度区间,因此,开发能够在低温条件下稳定工作的锂离子电池,可以满足在高寒地区、两极地... 详细信息

锂离子电池已在移动设备、电动交通工具和储能系统等领域得到广泛应用,随着信息化与军事现代化建设的快速发展,锂离子电池的使用需要适应更宽的工作温度区间,因此,开发能够在低温条件下稳定工作的锂离子电池,可以满足在高寒地区、两极地区,以及高空和近太空等区域对能量储存及释放的需求。电解液作为锂离子电池的一个重要组成部分,在电池中承担着锂离子的传输、在正负极界面生成固体电解质膜等重要作用,其低温性能会很大程度上影响锂离子电池的低温性能。由于电解液的优化在实际应用中更易于操作和实现,因而已成为该领域的研究热点。本文首先介绍了锂离子电池用低温电解液的研究现状和存在问题,然后从与市场和产业关系更为密切的锂离子电池低温电解液的相关专利申请入手,分析了其总体申请情况以及电解质盐、溶剂和添加剂等各技术分支的研究进展,并对重点申请人进行了分析,最后指出了国内创新主体在专利布局方面的不足之处,并给出了建议,为锂离子电池用低温电解液领域的研究提供参考。

关键词：锂离子电池低温电解液专利情报分析

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A special column highlighting young scientists at Institute of Chemistry, Chinese Academy of Sciences (ICCAS)

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Chinese Chemical Letters 2018年第3期29卷 343-344页

作者： Zhixun,Luo zhenzhong yang chinese academy of sciences state key laboratory for structural chemistry of unstable and stable species institute of chemistrychinese academy of sciences Beijing 100190 China

Just seeing off the BOth anniversary of the Institute of Chemistry, Chinese Academy of Sciences （ICCAS）, we are here with pleasure to conduct A Special Column for Young Scientists at ICCAS published in Chinese Chemistry Letters （CCL） endeavoring to disseminate positive energy of several enthusiastic chemists and spread their recent research to the global scientific community.

关键词： ICCAS A special column highlighting young scientists at Institute of Chemistry Chinese Academy of Sciences

Deciphering bioactive compounds of complex natural products by tandem mass spectral molecular networking combined with an aggregation-induced emission based probe

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Journal of Pharmaceutical Analysis 2022年第1期12卷 129-135页

作者： zhenzhong yang Jun Li Xuechun Chen Xiaoping Zhao Yi Wang Pharmaceutical Informatics Institute College of Pharmaceutical SciencesZhejiang UniversityHangzhou310058China College of Preclinical Medicine Zhejiang Chinese Medical UniversityHangzhou310053China

Natural products are great treasure troves for the discovery of bioactive *** bioassay guided fractionation for identification of bioactive components is time-and *** this study,we proposed a robust and convenient strategy for deciphering the bioactive profile of natural products by mass spectral molecular networking combined with rapid *** a proof-of-concept,the strategy was applied to identify angiotensin converting enzyme(ACE)inhibitors of Fangjihuangqi decoction(FJHQD),a traditional medicine clinically used for the treatment of heart *** chemical profile of FJHQD was comprehensively revealed with the assistance of tandem mass spectral molecular networking,and a total of 165 compounds were *** characterized constituents,potential clinical applications of FJHQD were predicted by Bioinformatics Analysis Tool for Molecular mech ANism of Traditional Chinese Medicine,and a range of cardiovascular related diseases were significantly *** inhibitory activities of FJHQD and its constituents were then investigated with an aggregation-induced emission based fluorescent *** exhibited excellent ACE inhibitory effects,and a bioactive molecular network was established to elucidate the ACE inhibitory profile of constituents in *** bioactive molecular network provided a panoramic view of FJHQD’s ACE inhibitory activities,which demonstrated that flavones from Astragali Radix and Glycyrrhizae Radix et Rhizoma,saponins from Astragali Radix,and sesquiterpenoids from Atractylodis Macrocephalae Rhizoma were principal components responsible for this effect of *** them,four novel ACE inhibitors were the first to be *** study indicated that the proposed strategy offers a useful approach to uncover the bioactive profile of traditional medicines and provides a pragmatic workflow for exploring bioactive components.

关键词： Bioactive profile Bioactive molecular network Fangjihuangqi decoction Angiotensin converting enzyme inhibitors

Supra-amphiphilic transparent mesoporous silica coating

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Chinese Science Bulletin 2006年第21期51卷 2572-2575页

作者： MA Jin yang Zhenglong QU Xiaozhong yang zhenzhong State Key Laboratory of Polymer Physics and Chemistry Institute of Chemistry Chinese Academy of Sciences Beijing 100080 China

Transparent mesoporous silica coatings were achieved by conventional sol-gel process. The obtained coatings display permanent supra- amphiphilicity, transparent appearance and good wetting property with very fast spread rate. Incorpo- ration of functional materials such as crystalline tita- nia nanoparticles into the coatings was also carried out without affecting the transparency and supra- amphiphilicity.

关键词：间隙孔硅石敷层溶胶-凝胶两性分子

SnSb-Li_(4)Ti_(5)O_(12)复合负极材料低温高倍率储锂特性研究

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储能科学与技术 2024年第7期13卷 2107-2115页

作者：马国政陈金伟熊兴宇杨振忠周钢胡仁宗广东省先进储能材料重点实验室华南理工大学材料科学与工程学院广东广州510640 东莞理工学院生态环境与建筑工程学院广东东莞523808

低温环境下,锂离子电池的性能明显下降,严重限制了其在寒冷地区的应用推广。尤其是,商业化的石墨负极材料锂离子扩散较慢且嵌锂电位低,易出现析锂风险而使锂离子电池的低温充电能力差。相比之下,Sn基负极材料具有较高的储锂容量和适中... 详细信息

低温环境下,锂离子电池的性能明显下降,严重限制了其在寒冷地区的应用推广。尤其是,商业化的石墨负极材料锂离子扩散较慢且嵌锂电位低,易出现析锂风险而使锂离子电池的低温充电能力差。相比之下,Sn基负极材料具有较高的储锂容量和适中的嵌锂电位,具有良好的低温应用前景。本文通过球磨方法,将Sn Sb与Li_(4)Ti_(5)O_(12)(LTO)进行复合,制备出了系列Sn Sb-Li_(4)Ti_(5)O_(12)复合负极材料。实验结果表明,当LTO含量为30%时,复合负极材料能兼顾高容量,同时具备良好的常、低温循环稳定性和高倍率储锂能力。在30℃下,以0.2 A/g循环300次后比容量为536 m Ah/g,容量保持率接近90%;即使在20 A/g (34C)的高倍率下比容量仍有280 m Ah/g。并且在-30℃下,以0.2 A/g循环100次后稳定容量为413 m Ah/g,1.0 A/g倍率下能保持适中嵌锂电位,嵌锂容量也可达其常温容量的61%。研究结果表明,LTO复合后Sn Sb的物相结构能够在循环过程中保持完整,保证了其低温条件下高倍率脱锂过程的循环稳定性。这项工作展现了Sn Sb-Li_(4)Ti_(5)O_(12)复合负极材料的低温应用潜力,为构建具有低温快速充电能力的锂离子电池提供材料基础。

关键词：锂离子电池低温充电合金负极倍率性能