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Nitrogen-rich Graphdiyne Film for Efficiently Suppressing the Methanol Crossover in Direct Methanol Fuel Cells

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Chemical Research in Chinese Universities 2021年第6期37卷 1275-1282页

作者： LI Liang zuo zicheng HE Feng JIANG Zhongqing LI Yuliang Beijing National Laboratory for Molecular Sciences(BNLMS) CAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing100190P.R.China University of Chinese Academy of Sciences Beijing100049P.R.China Key Laboratory of Optical Field Manipulation of Zhejiang Province Department of PhysicsZhejiang Sci-Tech UniversityHangzhou310018P.R.China

The inhibition of the methanol crossover is one of the intractable challenges in the direct methanol fuel *** graphdiyne(GDY)with atomic-level pores shows great potential in realizing the zero-permeation of methanol *** this paper,an ultrathin layer of nitrogen-rich GDY film with a high nitrogen content is largely prepared and readily used for retarding the methanol permeation in the state-of-the-art commercial Nafion *** high N-content in this porous GDY nanofilm remarkably increases the selective suppression in methanol transfer,and single-layer GDY film can efficiently prevent 43%methanol crossover and the value of the double-layer GDY film can be high up to 69%.The power performance and the long-term stability of the cell are obviously improved due to the reduced methanol crossover.

关键词： Direct methanol fuel cell(DMFC) Methanol crossover Nafion membrane Graphdiyne

Themed Issue on Graphdiyne

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Chemical Research in Chinese Universities 2021年第6期37卷 I0001-I0003页

作者： Yurui Xue zicheng zuo Jin Zhang Yuliang Li Shandong University Institute of Chemistry Chinese Academy of Sciences Peking University

Graphdiyne(GDY)has characteristics of one-atom-thick two-dimensional layers comprising of sp and sp^(2)hybridized carbon *** chemical and electronic structure gives GDY many unique and fascinating properties,such as rich chemical bonds,highly conjugated and super-largeπstructures,infinitely distributed pores and high inhomogeneity of charge distribution,etc.

关键词： infinitely bonds conjugated

3D Structured Porous Graphene for Advanced Multifunctional Electrochemical Electrode

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3D Structured Porous Graphene for Advanced Multifunctional E...

中国化学会第七届全国结构化学学术会议

作者： zicheng zuo Yuliang Li Institute of Chemistry Chinese Academy of Sciences

Porous and heteroatom-functionalized graphene are wildly applied in the electrochemical energy fields for meeting the imperative trends in green ***,an environment-friendly and mild method is developed to fabricate graphene electrode with 3D *** porous material has interlayer macropores and in-plane *** specific surface area is high up to 835 m g

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石墨炔电化学电池界面构筑

高等学校化学学报 2021年第2期42卷 321-332页

作者：高小雅左自成李玉良中国科学院化学研究所北京100080

石墨炔是新兴的碳同素异形体,其独特的结构和性质引起了不同领域科学家的广泛关注.研究表明,石墨炔在能源、催化、光学、磁学、信息科学和生命科学等领域发展潜力巨大.近年来,石墨炔在电化学能源领域的基础和应用研究展现了石墨炔作为... 详细信息

石墨炔是新兴的碳同素异形体,其独特的结构和性质引起了不同领域科学家的广泛关注.研究表明,石墨炔在能源、催化、光学、磁学、信息科学和生命科学等领域发展潜力巨大.近年来,石墨炔在电化学能源领域的基础和应用研究展现了石墨炔作为电化学能源材料所具有的独特优势,为解决电化学能源器件所面临的科学瓶颈提供了新理念、新方法和新概念.本文综合评述了近3年来石墨炔在电化学电池界面应用方面的研究进展,主要涉及二维石墨炔的制备和结构优势,及其为多种电化学电池电极界面构筑、界面选择性传输及电极界面稳定性等带来的新启发.

关键词：石墨炔锂离子电池锂金属电池电极保护电极界面

Synthesis and Property of Molecular Materials Based Porphyrin Unit

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Synthesis and Property of Molecular Materials Based Porphyri...

Molecule-Based Materials from 1 Dimension to 2 Dimension Aggregated Structures

中国化学会第四届卟啉与酞菁学术研讨会

作者： Huibiao Liu Yongjun Li zicheng zuo Yuliang Li CAS Key Laboratory of Organic Solids Beijing National Laboratory for Molecular Sciences（BNLMS）Institute of ChemistryChinese Academy of Sciences

A series of molecules based on porphyrin unit are designed and *** have developed new methods to construct their aggregate nanostructures via self-polymerization and self-organization,and a combination of intermolecular interactions and self-assembly techniques based on covalent band,hydrogen band,π-π *** methods are both facile and reliable,allowing us to produce ordered and aligned aggregate nanostructures,such as large-area arrays of nanorods,and ***-area ordered aggregate structures exhibit interesting electrical,optical,and optoelectronic properties for applications in next-generation lithium-ion storgae,electronic and optoelectronic devices.

关键词： Porphyrin Synthesis Property Molecular Materials

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Molecule-Based Materials from 1 Dimension to 2 Dimension Agg...

中国化学会第七届全国结构化学学术会议

作者： Yuliang Li Huibiao Liu Yongjun Li zicheng zuo Institute of Chemistry Chinese Academy of Sciences

＜正＞Molecule based materials nanoarchitectures have been employed as important nanoscale building blocks for advanced materials and smart miniature devices to fulfill the increasing needs of high materials usage *** dimension Molecule based materials based nanoarchitectures,especially low dimension nanostructures,attract significant attention due to its fascinating

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石墨炔在锂/钠离子电池负极中的应用

应用化学 2018年第9期35卷 1057-1066页

作者：左自成李玉良中国科学院化学研究所北京分子科学国家实验室中国科学院分子科学科教融合卓越中心北京100190 中国科学院大学北京100049

二维石墨炔优异的物理和化学性质受到了广泛的关注。近几年,与石墨炔相关的理论、合成和应用研究快速发展,并取得显著成果。基于石墨炔独特的制备方式与可控的分子结构,其已经在很多传统的研究领域展现出潜力,也在一些新兴的研究方向上... 详细信息

二维石墨炔优异的物理和化学性质受到了广泛的关注。近几年,与石墨炔相关的理论、合成和应用研究快速发展,并取得显著成果。基于石墨炔独特的制备方式与可控的分子结构,其已经在很多传统的研究领域展现出潜力,也在一些新兴的研究方向上产生重要影响,表明石墨炔的研究正逐渐成为一个非常热门研究领域。而石墨炔在电化学储能方面的研究越来越多,文章概述了石墨炔与电化学储能相关的优异特性,总结了石墨炔的常规制备方法,重点讨论了在低温制备优势下石墨炔家族成员的迅速壮大和相应石墨炔新成员独特结构对电化学储锂和储钠行为的影响。

关键词：石墨炔二维材料锂离子电池钠离子电池负极

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石墨炔界面:从微观到宏观电极优化策略

中国科学：化学 2022年第2期52卷 222-240页

作者：成姝锦左自成李玉良中国科学院化学研究所北京100190

石墨炔是新兴的二维碳同素异形体,其独特的结构和性质已经为绿色能源、绿色化学、生物医药、智能电子等领域带来诸多原创的理念.在电化学能源领域,石墨炔已经逐渐发展成为该领域中具有巨大发展潜力的关键材料之一,为解决电化学能源领域... 详细信息

石墨炔是新兴的二维碳同素异形体,其独特的结构和性质已经为绿色能源、绿色化学、生物医药、智能电子等领域带来诸多原创的理念.在电化学能源领域,石墨炔已经逐渐发展成为该领域中具有巨大发展潜力的关键材料之一,为解决电化学能源领域的诸多关键问题提供了新的思路.本文系统总结了利用石墨炔优异本征性质,解决目前电化学能源器件的瓶颈问题获得的研究进展,主要包括石墨炔抑制原子尺度的电极活性物质溶解穿梭与界面副反应、稳定纳米尺度的电极主体结构与次级结构、避免宏观尺寸的活性物质脱落和导电网络破坏等科学问题.结合研究进展进一步提出石墨炔作为电化学能源关键材料所面临的机遇和挑战.

关键词：石墨炔电极界面选择性传输锂离子电池燃料电池

Repair tolerance assessment for aircraft composite structures using Bayesian updating

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Chinese Journal of Aeronautics 2024年第6期37卷 360-391页

作者： Xin LI Hongfu zuo Bin YANG School of Automotive and Rail Transit Nanjing Institute of TechnologyNanjing 211167China Civil Aviation Key Laboratory of Aircraft Health Monitoring and Intelligent Maintenance College of Civil AviationNanjing University of Aeronautics and AstronauticsNanjing 211106China

Detection and repair of composite damage is crucial to ensure the safety and reliability of aircraft structures.A novel approach to quantitatively evaluate the repair tolerance of composite structures in civil aircraft based on Bayesian updating is *** method incorporates historical damage inspection data to determine the prior distribution of damage size,which is then updated with newly collected damage size data using Bayesian *** Carlo simulation is employed to investigate the probability of failure and estimate maintenance costs,considering various factors such as the frequency and timing of damage events,damage detection,structural strength,gust loads,and maintenance expenses throughout the lifecycle of composite *** and economic factors are considered to establish a lower threshold for repairs and an upper threshold for maintenance based on the occurrence of accidental impact *** of the effectiveness and feasibility of a quantitative assessment method for repair tolerance is conducted using damage statistics data from civil aircraft routes utilizing the structural skin panels of composite outer *** results demonstrate that the method proposed in conjunction with extensive simulations and full utilization of field damage inspection data can effectively simulate unexpected impact damage situations that may occur during civil aircraft service and evaluate the reliability and economic feasibility of the repair of *** research findings hold significant theoretical and practical value for the preparation of documents for continued airworthiness of composite structures,including structural repair manuals and maintenance programs.

关键词： Composite structures Repair tolerance Maintenance Bayesian updating Probability of failure