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Synthesis and Crystal Structure of [Cd(NBA)(μ_3-OH)(4,4′-bipy)_(1/2)]_n

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Chinese Journal of Structural Chemistry 2007年第8期26卷 917-919页

作者： SHEN Yi-Cheng ZHANG jian LI Zhao-ji ZHANG lei YIN Pei-Xiu YAO Yuan-Gen State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter The Chinese Academy of Sciences Fuzhou Fujian 350002 China

A new cadmium polymer [Cd（NBA）（μ3-OH）（4,4＇-bipy）1/2]n 1 （NBA=m-nitrobenzoic acid and 4,4＇-bipy=4,4-bipyridine） has been synthesized by hydrothermal reaction. Its structure was determined by single-crystal X-ray diffraction method, and characterized by elemental analysis and IR spectrum. The crystal is of monoclinic, space group C2/c, with a=15.6912（9）, b=25.9394（15）, c=6.7332（4）A, β=114.7700（10）°, V=2488.4（3）A^3, C12H9CdN2O5, Mr=373.61, Z=8, Dc=1.995 g/cm^3,μ=1.776 mm^-1, F（000）=1464, R=0.0411 and wR=0.1128 for 2130 observed reflections （I 〉 2σ（I））.X-ray diffraction studies reveal that the compound features a layered structure, in which 4,4＇-bipy ligands bridge Z type of double chains [Cd（μ3-OH）]n and NBA ligands locate at the two sides of the layer. The π-π interactions between the benzene rings of NBA ligands of two adjacent layers lead to the 3D framework.

关键词： cadmium polymer 4 4'-bipyridine m-nitrobenzoic acid crystal structure

Hierarchical porous carbon derived from coal-based carbon foam for high-performance supercapacitors

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Chinese Chemical Letters 2022年第8期33卷 3961-3967页

作者： Nuannuan Yang lei ji Haichao Fu Yanfeng Shen Meijun Wang jinghai Liu Liping Chang Yongkang Lv State Key Laboratory of Clean and Efficient Coal Utilization Taiyuan University of TechnologyTaiyuan 030024China Key Laboratory of Coal Science and Technology Ministry of Education and Shanxi ProvinceTaiyuan University of TechnologyTaiyuan 030024China Inner Mongolia Key Laboratory of Carbon Nanomaterials Nano Innovation Institute(NII)College of Chemistry and Materials ScienceInner Mongolia Minzu UniversityTongliao 028000China

Hierarchical porous carbon(HPC)from bituminous coal was designed and synthesized through pyrolysis foaming and KOH *** obtained HPC(NCF-KOH)were characterized by a high specific surface area(S_(BET))of 3472.41 m^(2)/g,appropriate mesopores with V_(mes)/V_(total)of 57%,and a proper amount of surface oxygen content(10.03%).This NCF-KOH exhibited a high specific capacitance of 487 F/g at 1.0 A/g and a rate capability of 400 F/g at 50 A/g based on the three-electrode *** an electrode for a symmetric capacitor,a specific capacitance of 299 F/g at 0.5 A/g was exhibited,and the specific capacitance retained 96%of the initial capacity at 5 A/g after 10,000 ***,under the power density of 249.6 W/kg in 6 mol/L KOH,a high energy density of 10.34 Wh/kg was *** excellent charge storage capability benefited from its interconnected hierarchical pore structure with high accessible surface area and the suitable amount of oxygen-containing functional ***,an effective strategy to synthesize HPC for high-performance supercapacitors serves as a promising way of converting coal into advanced carbon materials.

关键词： Bituminous coal Three-dimensional structure KOH activation Hierarchical porous carbon Supercapacitor

不同退火条件下溶液法制备TZO-TFT器件电学性能分析

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吉林建筑大学学报 2024年第3期41卷 83-88页

作者：张轶强闫兴振刘国祥纪雷阳吉林建筑大学电气与计算机学院长春130118

近年来,随着电子产品的大量更新迭代,人们对产品性能要求越来越高,半导体材料与薄膜制备技术成为信息时代发展的重要支柱。传统的磁控溅射法制备薄膜晶体管,存在需要真空制备条件、光刻工艺制备复杂、制备成本高等问题。本文采用溶液法... 详细信息

近年来,随着电子产品的大量更新迭代,人们对产品性能要求越来越高,半导体材料与薄膜制备技术成为信息时代发展的重要支柱。传统的磁控溅射法制备薄膜晶体管,存在需要真空制备条件、光刻工艺制备复杂、制备成本高等问题。本文采用溶液法制备TZO溶液,旋涂法制备有源层薄膜,并用掩膜版直接生长圆形源漏电极制备薄膜晶体管,研究在不同的退火温度(350℃,550℃,750℃)和不同的退火氛围(真空退火、空气退火)条件下对所制备器件性能的影响。通过实验得出:溶液法制备的TZO-TFT薄膜晶体管,升高热处理温度可以改善器件的电学性能,在550℃的真空条件下对其进行退火,获得了较好的性能,其开关比达到8.04×10^(4),迁移率达到1.04 cm^(2)·(V·s)^(-1),器件的性能稳定。

关键词：溶液法 TZO-TFT 退火温度退火氛围

Encapsulated three-dimensional bioprinted structure seeded with urothelial cells:a new construction technique for tissue-engineered urinary tract patch

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Chinese Medical Journal 2020年第4期133卷 424-434页

作者： Yi-Peng jin Chong Shi Yuan-Yi Wu ji-lei Sun jiang-Ping Gao Yong Yang Department of Urology Sixth Medical Center of Chinese People's Liberation Army General HospitalBeijing 100048China The First Center of Department of Hepatobiliary Surgery Fifth Medical Center of Chinese People's Liberation Army General HospitalBeijing 100039China Department of Urology Fourth Medical Center of Chinese People's Liberation Army General HospitalBeijing 100048China Department of Urology First Medical Center of Chinese People's Liberation Army General HospitalBeijing 100853China

Background:Traditional tissue engineering methods to fabricate urinary tract patch have some drawbacks such as compromised cell viability and uneven cell distribution within *** this study,we combined three-dimensional(3D)bioprinting and tissue engineering method to form a tissue-engineered urinary tract patch,which could be employed for the application on Beagles urinary tract defect mode to verify its effectiveness on urinary tract ***:Human adipose-derived stem cells(hADSCs)were dropped into smooth muscle differentiation medium to generate induced microtissues(ID-MTs),flow cytometry was utilized to detect the positive percentage for CD44,CD105,CD45,and CD34 of *** of vascular endothelial growth factor A(VEGFA)and tumor necrosis factor-stimulated gene-6(TSG-6)in hADSCs and MTs were identified by Western *** the ID-MTs were employed for 3D *** bioprinted structure was encapsulated by transplantation into the subcutaneous tissue of nude mice for 1 *** retrieval of the encapsulated structure,hematoxylin and eosin and Masson’s trichrome staining were performed to demonstrate the morphology and reveal collagen and smooth muscle fibers,integral optical density(IOD)and area of interest were calculated for further semiquantitative *** double staining of CD31 andα-smooth muscle actin(α-SMA)were used to reveal vascularization of the encapsulated *** was performed to evaluate the expression of interleukin-2(IL-2),α-SMA,and smoothelin of the MTs in the implanted ***,the encapsulated structure was seeded with human urothelial *** staining of cytokeratins AE1/AE3 was applied to inspect the morphology of seeded encapsulated ***:The semi-quantitative assay showed that the relative protein expression of VEGFA was 0.355±0.038 in the hADSCs vs.0.649±0.150 in the MTs(t=3.291,P=0.030),while TSG-6 expression was 0.492±

关键词： Human adipose-derived stem cells Urinary tract patch Microtissues Tissue engineering Three-dimensional bioprinting

Properties of Nanokaolin and Its Rubber Composites

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Journal of China University of Mining and Technology 2005年第4期15卷 317-321页

作者： ZHANG Yu-de LIU Qin-fu ji lei-bo LU Yin-ping School of Resources and Safety Engineering China University of Mining and Technology Beijing 100083 China

A kind of nanokaolin powder with a thickness of 20-50nm and an average diameter of 300nm is produced through combined procedure of purification, delamination, surface modification and pulverization. The application experiments in butadiene rubber (BR), ethylene-propylene diene methylene (EPDM), and natural rubber (NR) indicates that this nano-kaolin powder material is much better than precipitated silica in reinforcement, while in styrene-butadiene rubber (SBR) it is close to precipitated silica. Nanokaolin is of superiority in elasticity, elongation at break, anti-flexure property.

关键词： nanokaolin properties rubber composites

Structurally modulated Li-rich cathode materials through cooperative cation doping and anion hybridization

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中国科学：化学英文版 2017年第12期60卷 1554-1560页

作者： Xu-Dong Zhang ji-lei Shi jia-Yan Liang Ya-Xia Yin Yu-Guo Guo Li-Jun Wan CAS Key Laboratory of Molecular Nanostructure and Nanotechnology CAS Research/Education Center for Excellence in Molecular SciencesInstitute of Chemistry Chinese Academy of Sciences School of Chemistry and Chemical Engineering University of Chinese Academy of Sciences

High capacity Li-rich materials are mighty contenders for building rechargeable batteries that coincide with the demand in energy density. Fully realizing the extraordinary capacity involves oxygen evolution and related cation migration, resulting in phase transitions and deteriorations that would hinder their practical application. In an attempt to enhance the anodic redox participation and stabilize the structure at the same time, we proposed a structural modulation strategy with modification on anion hybridization intensifying and cation doping. Spectator ions with large ionic radius were introduced into the lattice during calcination with stannous chloride and the d-p hybridization between transition metal 3 d and oxygen 2 p orbitals was subsequently intensified along with expelling weakly bonded chloride species in the reheating process. Both of the reversible capacity and stability upon cycling were remarkably improved through the cooperation of bond alteration and dopant. This strategy might provide new insight into the modulation of the structure to truly fulfill the potential of Li-rich materials.

关键词： Li-ion batteries cathode materials structural modification doping anodic redox

Flow structure and rock-breaking feature of the self-rotating nozzle for radial jet drilling

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Petroleum Science 2020年第1期17卷 211-221页

作者： Hua-Lin Liao Xia jia ji-lei Niu Yu-Cai Shi Hong-Chen Gu Jun-Fu Xu Key Laboratory of Unconventional Oil and Gas Development(China University of Petroleum(East China)) Ministry of EducationQingdao 266580ShandongChina School of Petroleum Engineering China University of Petroleum(East China)Qingdao 266580ShandongChina Shengli Offshore Drilling Co SINOPECDongying 257000ShandongChina

For improving the hole-enlarging capability,roundness and rock-breaking efficiency of the nozzle in radial jet drilling,a new structure of self-rotating nozzle was put *** flow structure and rock-breaking features of the self-rotating nozzle were investigated with sliding mesh model and labortary tests and also compared with the straight and the swirling integrated nozzle and multi-orifice nozzle which have been applied in radial jet *** results show that the self-rotating jet is energy concentrated,has longer effective distance,better hole-enlarging capability and roundness and impacts larger circular area at the bottom of the drilling hole,compared with the other two *** jet flow generated from the nozzle is peak shaped,and the jet velocity attenuates slowly at the outer *** to periodic rotary percussion,the pressure fluctuates periodically on rock surface,improving shear and tensile failures on the rock matrix and thereby enhancing rock-breaking *** numerical simulation results of the flow structure of the nozzle are consistent with the *** study provides an innovative approach for radial jet drilling technology in the petroleum industry.

关键词： Self-rotating nozzle Flow field characteristic Numerical simulation Rock-breaking

Size controllable single-crystalline Ni-rich cathodes for high-energy lithium-ion batteries

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National Science Review 2023年第2期10卷 232-241页

作者： ji-lei Shi Hang Sheng Xin-Hai Meng Xu-Dong Zhang Dan lei Xiaorui Sun Hongyi Pan Junyang Wang Xiqian Yu Chunsheng Wang Yangxing Li Yu-Guo Guo CAS Key Laboratory of Molecular Nanostructure and Nanotechnology Beijing National Laboratory for Molecular Sciences (BNLMS) Institute of Chemistry Chinese Academy of Sciences (CAS) University of Chinese Academy of Sciences Beijing Advanced Innovation Center for Materials Genome Engineering Institute of PhysicsCAS Department of Chemical and Biomolecular Engineering University of Maryland Chery New Energy Automobile Co. Ltd

A single-crystalline Ni-rich(SCNR) cathode with a large particle size can achieve higher energy density,and is safer,than polycrystalline ***,synthesizing large SCNR cathodes(>5 μm)without compromising electrochemical performance is very challenging due to the incompatibility between Ni-rich cathodes and high temperature ***,we introduce Vegard’s Slope as a guide for rationally selecting sintering aids,and we successfully synthesize size-controlled SCNR cathodes,the largest of which can be up to 10 μ*** theoretical calculation and experimental characterization show that sintering aids continuously migrate to the particle surface,suppress sublattice oxygen release and reduce the surface energy of the typically exposed facets,which promotes grain boundary migration and elevates calcination critical *** dense SCNR cathodes,fabricated by packing of different-sized SCNR cathode particles,achieve a highest electrode press density of 3.9 g cm-3and a highest volumetric energy density of 3000 Wh *** pouch cell demonstrates a high energy density of 303 Wh kg-1,730 Wh L-1and 76% capacity retention after 1200 *** cathodes with an optimized particle size distribution can meet the requirements for both electric vehicles and portable ***,the principle for controlling the growth of SCNR particles can be widely applied when synthesizing other materials for Li-ion,Na-ion and K-ion batteries.

关键词： lithium-ion baTheries high energy density Ni-rich cathodes single-crystalline surface energy

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服务器机箱底座下沉量Sag仿真与测试研究

机械研究与应用 2024年第3期37卷 41-44页

作者：龚宝龙张海龙郭峰路纪雷浪潮电子信息产业股份有限公司山东济南250101 广东浪潮智慧计算技术有限公司广东广州510623 高效能服务器与存储技术国家重点实验室山东济南250101

文章采用Abaqus仿真与批量测试的方法,对服务器机箱底座的下沉量进行深入研究分析。以2U通用机架服务器为例展开分析,通过进行仿真与实测对比,证明了仿真精度足够且演练了满载sag到空载sag的分析和管控过程。该研究提出了全新的空载sag... 详细信息

文章采用Abaqus仿真与批量测试的方法,对服务器机箱底座的下沉量进行深入研究分析。以2U通用机架服务器为例展开分析,通过进行仿真与实测对比,证明了仿真精度足够且演练了满载sag到空载sag的分析和管控过程。该研究提出了全新的空载sag管控理论,并根据满载建议值反推空载建议值,再由仿真计算出空满载差值,该方法有效提升了工厂端的sag管控,对服务器机箱的sag设计和生产有重要指导意义。

关键词：服务器机箱 sag仿真 sag测试