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What are the practical limits for the specific surface area and capacitance of bulk sp^2 carbon materials?

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Science China Chemistry 2016年第2期59卷 225-230页

作者： Yanhong Lu Guankui Long Long zhang Tengfei zhang mingtao zhang Fan zhang Yang Yang Yanfeng Ma Yongsheng Chen School of Chemistry & Material Science Langfang Teachers University Key Laboratory of Functional Polymer Materials and Center for Nanoscale Science and Technology Institute of Polymer Chemistry College of Chemistry Nankai University

The possible practical limits for the specific surface area and capacitance performance of bulk sp^2 carbon materials were investigated experimentally and theoretically using a variety of carbon materials. We find the limit for the specific surface area to be 3500–3700 m^2 g^(-1), and based on this, the corresponding best capacitance was predicted for various electrolyte systems. A model using an effective ionic diameter for the electrolyte ions was proposed and used to calculate the theoretical capacitance. A linear dependence of experimental capacitance versus effective specific surface area of various sp^2 carbon materials was obtained for all studied ionic liquid, organic and aqueous electrolyte systems. Furthermore, excellent agreement between the theoretical and experimental capacitance was observed for all the tested sp^2 carbon materials in these electrolyte systems, indicating that this model can be applied widely in the evaluation of various carbon materials for supercapacitors.

关键词： graphene bulk sp2 carbon materials supercapacitor specific surface area DFT modeling

Bromination of Isothianaphthene Derivatives towards the Application in Organic Electronics

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Chinese Journal of Chemistry 2013年第11期31卷 1391-1396页

作者： Guankui Long Xiangjian Wan Peng Yun Jiaoyan Zhou Yongsheng Liu Miaomiao Li mingtao zhang Yongsheng Chen Key Laboratory for Functional Polymer Materials and Center for Nanoscale Science and Technology Institute of Polymer Chemistry Nankai University Tianjin 300071 China Computational Center for Molecular Science College of Chemistry Nankai University Tianjin 300071 China

Different approaches to brominate dialkyl isothianaphthene-5,6-dicarboxylate were tried and single crystals of target molecule and side product were obtained. A planar copolymer with the trans-ethene has been prepared... 详细信息

关键词： bromination isothianaphthene planar copolymer

自体骨软骨联合骨膜移植对兔肩袖腱-骨愈合作用的研究

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中国修复重建外科杂志 2025年第2期39卷 187-192页

作者：方森张明涛杨旭东道吉才让李明春年稚轩梁钧文韵向东兰州大学第二医院骨科兰州730000 甘肃省骨关节疾病研究重点实验室兰州730000

目的探讨自体骨软骨联合骨膜移植对兔肩袖腱-骨愈合的作用。方法将24只雄性新西兰大白兔随机分为自体骨软骨联合骨膜移植组(实验组)和单纯缝合组(对照组),每组12只。两组制备双侧肩关节急性冈上肌肌腱损伤模型后,采用对应方法治疗。术... 详细信息

目的探讨自体骨软骨联合骨膜移植对兔肩袖腱-骨愈合的作用。方法将24只雄性新西兰大白兔随机分为自体骨软骨联合骨膜移植组(实验组)和单纯缝合组(对照组),每组12只。两组制备双侧肩关节急性冈上肌肌腱损伤模型后,采用对应方法治疗。术后观察动物一般情况,于4、8、12周各取4只肩关节标本行组织学观察(HE染色、Masson染色、番红O-固绿染色)及生物力学测试(最大拉伸载荷、刚度)。结果术后两组动物均存活至实验完成。组织学观察示,术后4周两组腱-骨处胶原纤维少且紊乱;8周时两组腱-骨处炎症细胞减少,胶原纤维和软骨细胞排列更有序、致密,其中实验组优于对照组;12周时实验组出现典型腱-骨过渡结构,胶原纤维和软骨细胞生成增多,且实验组软骨染色范围更大。生物力学测试示,两组最大拉伸载荷及刚度均随时间延长而持续增加,3个时间点间比较差异均有统计学意义(P0.05)。结论自体骨软骨联合骨膜移植可有效促进兔肩袖腱-骨交界处纤维和软骨再生,改善肩关节生物力学效果。

关键词：肩袖损伤腱-骨愈合骨软骨骨膜自体移植兔

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青岛大学附属医院绿色低碳智慧改造项目的实践与应用

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山西建筑 2025年第06期51卷 30-34+38页

作者：张明涛靳鑫伟赵丹枫刘雅婷都萍青岛大学附属医院北京石油化工学院

随着全球气候变化和环境污染日益严重，绿色低碳发展理念正逐渐成为我国社会发展的主旋律。在医疗领域，绿色低碳智慧改造项目不仅有助于提高医疗服务质量，还能有效降低能耗，实现可持续发展。以青岛大学附属医院西海岸院区为例，探讨... 详细信息

随着全球气候变化和环境污染日益严重，绿色低碳发展理念正逐渐成为我国社会发展的主旋律。在医疗领域，绿色低碳智慧改造项目不仅有助于提高医疗服务质量，还能有效降低能耗，实现可持续发展。以青岛大学附属医院西海岸院区为例，探讨合同能源管理模式在绿色低碳智慧改造项目中的实践与应用，以期为我国医疗行业的绿色转型提供借鉴。

关键词：碳排放节能改造绿色低碳智慧改造项目

Lowing the energy loss of organic solar cells by molecular packing engineering via multiple molecular conjugation extension

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Science China Chemistry 2022年第7期65卷 1362-1373页

作者： Hongbin Chen Yalu Zou Huazhe Liang Tengfei He Xiaoyun Xu Yunxin zhang Zaifei Ma Jing Wang mingtao zhang Quanwen Li Chenxi Li Guankui Long Xiangjian Wan Zhaoyang Yao Yongsheng Chen State Key Laboratory and Institute of Elemento-Organic Chemistry Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer MaterialsRenewable Energy Conversion and Storage Center(RECAST)College of ChemistryNankai UniversityTianjin 300071China School of Materials Science and Engineering National Institute for Advanced MaterialsRenewable Energy Conversion and Storage Center(RECAST)Nankai UniversityTianjin 300350China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Center for Advanced Low-dimension MaterialsCollege of Materials Science and EngineeringDonghua UniversityShanghai 201620China School of Materials Science&Engineering Tianjin University of TechnologyTianjin 300384China

The central unit(benzo[c][1,2,5]thiadiazole) in Y6 series of molecules plays a determining role in their unique intermolecular packing for a three-dimensionally(3D) network, largely endowing their organic solar cells(OSCs) with so far the best power conversion efficiencies(PCEs) and also largely suppressed energy losses(Eloss). Despite its vital role in molecular packing, very few explorations for central unit have been conducted due to possibly the constructing challenge of central heterocyclic ***, a highly efficient acceptor-donor-acceptor(A-D-A) type electron acceptor, CH17, has been designed and constructed,featured with a prominent π extension in both directions of the central and end units with respect to Y6 series. Such a multiple and much enhanced conjugation extension in CH17 enables a much more effective and compact 3D molecular packing compared with that of Y6 supported by X-ray single crystal and other analysis, mainly caused by a newly observed distinctive dual “end unit to central unit” packing mode. This much favorable molecular packing, also kept in its blends with donor materials, leads a larger electron and hole transfer integrals and hence much improved charge transport, and reduced energetic disorders in CH17blends. More importantly, the observed upshifted charge transfer(CT) state of CH17 blends compared with that of Y6, due to its increased molecular conjugation extension in both directions, further enhances the hybridization between its CT and local exciton(LE) states, resulting in higher luminescence efficiency, much suppressed non-radiative recombination loss and smaller Elosswith respect to that of Y6. Consequently, an excellent PCE of 17.84% is achieved with PM6 as the donor in a binary device compared with a PCE of 16.27% for the controlled Y6 device. Furthermore, a further improved PCE of 18.13% is achieved by CH17-based ternary single-junction OSCs along with a markedly reduced Elossof 0.49 e V and larger open-circuit voltage(

关键词： organic solar cells A-D-A electron acceptor reduced Eloss central unit multiple conjugation extension molecular packing

Recent advances in 3D-printable aggregation-induced emission materials

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Materials Futures 2024年第4期3卷 22-40页

作者： mingtao zhang Yu Li Guangmeng Ma Fawei Guo Haixin Wu Han Wu Qingxin Jin Xin Luo Chunyi Luo Jiaqi Li Yu Long State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures Guangxi UniversityNanning 530004People’s Republic of China Institute of Laser Intelligent Manufacturing and Precision Processing School of Mechanical EngineeringGuangxi UniversityNanning 530004People’s Republic of China

Aggregation-induced emission(AIE)materials exhibit remarkable emission properties in the aggregated or solid states,offering numerous advantages such as high quantum yield,excellent photostability,and low background *** characteristics have led to their widespread application in optoelectronic devices,bio-detection markers,chemical sensing,and stimuli-responsive applications among *** contrast to traditional manufacturing processes,3D printing(3DP)enables rapid prototyping and large-scale customization with excellent flexibility in manufacturing techniques and material *** combination of AIE materials with 3DP can provide new strategies for fabricating materials and devices with complex ***,3DP is an ideal choice for processing AIE organic luminescent ***,3DP of AIE materials is still in the early stages of development and is facing many challenges including limited printable AIE materials,poor printing functionalities and limited application *** review aims to summarize the significant achievements in the field of 3DP of AIE ***,different types of AIE materials for 3DP are studied,and the factors that affect the printing effect and the luminescence mechanism are ***,the latest advancements made in various application domains using 3D printed AIE materials are ***,the existing challenges of this emerging field are discussed while the future prospects are prospected.

关键词： 3D printing aggregation-induced emission luminescent materials process monitoring

Numerical Simulation Multicomponent Ion Beam Transport form ECR Ion Source

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近代物理研究所和兰州重离子加速器实验室年报：英文版 2003年第1期 147-148页

作者： Ma Lei, Song mingtao, zhang Zimin and Cao Yun

In order to simulate the transport of multi-components ion beam extracted from an ECR ion source, we have developed a multi-charged ion beam transport program named MCIBS 1.0. The program is dedicated to numerical simulation of the behavior of highly-charged ion beam and optimization of beam optics in transport lines and is realized on a PC with Windows user interface of Microsoft Visual Basic. Among all the ions with different charge states in the beam, the exchanges of electrons between highly charged ions and low charged ions or neutral,atoms of residual gas are taken into account by using classical Molecular Over-barrier Model and Monte Carlo method. An advanced Windows graphical interface makes it; comfortable and friendly for the user to operate in an interactive mode. The present program is used for the numerical calculation and optimization of beam optics in a transport line consisting of various magnetic elements, such as dipole magnet, quadrupole and so on. It is possible to simultaneously simulate 200,000 particles, in a transport line of 340 m at most, and show every particle orbit. Beam cross section graphics and emittance phase pictures can be also shown at any position in the transport line.

关键词：数字仿真多成分离子束传送器离子源 ECR 磁元素作图法

曲线条件下重载列车闸瓦压力不均衡紧急制动特性分析

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重庆理工大学学报(自然科学) 2025年第1期39卷 205-212页

作者：张铭涛王志伟刘鹏飞石怀龙刘国云张卫华西南交通大学轨道交通运载系统全国重点实验室成都610031 西南交通大学机械工程学院成都610031 石家庄铁道大学省部共建交通工程结构力学行为与系统安全国家重点实验室石家庄050043 中车株洲电力机车有限公司重载快捷大功率电力机车全国重点实验室湖南株洲412001

为研究重载列车通过曲线时闸瓦压力不均衡对轮轨动态相互作用的影响,以万吨重载列车为研究对象,根据多体动力学理论,建立考虑基础制动装置且能够模拟轮瓦摩擦制动效果的三维和一维混编的万吨重载列车动力学模型,并对动力学模型的有效性... 详细信息

为研究重载列车通过曲线时闸瓦压力不均衡对轮轨动态相互作用的影响,以万吨重载列车为研究对象,根据多体动力学理论,建立考虑基础制动装置且能够模拟轮瓦摩擦制动效果的三维和一维混编的万吨重载列车动力学模型,并对动力学模型的有效性进行验证。基于此,针对曲线上基础制动装置故障导致目标车辆出现不均衡闸瓦压力的情况,系统研究了不均衡闸瓦压力对重载列车曲线通过性能的影响。仿真结果表明:在曲线线路上出现紧急制动不均衡闸瓦压力时,列车产生的车钩力和轮轨激励的共同作用导致重载列车动力学行为恶化。通过1200 m的曲线半径时,在车钩力和闸瓦压力不均衡作用的影响下,一位轮对的横移量、轮轴横向力和磨耗数相比正常制动工况分别增大了16.7%、25.7%和118.66%。列车在半径为600 m的曲线上发生闸瓦压力不均衡时,轮轨动态相互作用恶化最为严重,闸瓦压力不均衡导致列车出现脱轨、轮缘贴靠以及轮对磨损的可能性更大。因此,在重载列车实际运行和维护过程中,需重点关注列车在曲线上的制动行为以及基础制动装置的保养。

关键词：多体动力学重载列车紧急制动闸瓦故障曲线通过性能

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我国农村土地流转准入的法律制度建构

中州学刊 2016年第1期 57-61页

作者：张明涛四川大学法学院商丘师范学院法学院

近年来,我国农村土地流转加速推进,但土地流转准入制度缺失导致受让方良莠不齐,引发农地使用"离粮化""脱农化"等问题,影响耕地保护和粮食安全。日本和韩国的农地流转准入制度适应了其国内农业现代化的要求,促进了土地合理、高效利用及... 详细信息

近年来,我国农村土地流转加速推进,但土地流转准入制度缺失导致受让方良莠不齐,引发农地使用"离粮化""脱农化"等问题,影响耕地保护和粮食安全。日本和韩国的农地流转准入制度适应了其国内农业现代化的要求,促进了土地合理、高效利用及农业经营规模化。以此为借鉴,我国《农村土地承包法》应当明确农村土地流转准入的主体范围,以农业经营能力要求为核心,构建系统的农村土地流转准入制度,促进农村土地流转规范化。

关键词：农村土地流转受让人资格农业经营能力农业生产法人