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Catalytically altering the redox pathway of sulfur in propylene carbonate electrolyte using dual-nitrogen/oxygen-containing carbon

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Chinese Journal of Catalysis 2024年第8期63卷 224-233页

作者： Linghui Yu Heng Zhang luyuan paul wang Samuel Jun Hoong Ong Shibo Xi Bo Chen Rui Guo Ting wang Yonghua Du Wei Chen Ovadia Lev Zhichuan J.Xu School of Chemistry and Chemical Engineering Wuhan Textile UniversityWuhan 430200HubeiChina School of Materials Science and Engineering Nanyang Technological UniversitySingapore 639798Singapore Hubei Key Laboratory of Biomass Fibers&Eco-Dyeing&Finishing Wuhan Textile UniversityWuhan 430200HubeiChina Institute of Sustainability for Chemicals Energy and Environment(ISCE2)Agency for ScienceTechnology and Research in Singapore(A*STAR)1 Pesek RoadJurong Island 627833Singapore Department of Chemistry National University of SingaporeSingapore 117543Singapore College of the Environment&Ecology Xiamen UniversityXiamen 361102FujianChina National Synchrotron Light Source II Brookhaven National LaboratoryUptonNY 11973USA The Institute of Chemistry The Hebrew University of JerusalemJerusalem 9190401Israel Singapore-HUJ Alliance for Research and Enterprise NEW-CREATE Phase IICampus for Research Excellence and Technological Enterprise(CREATE)Singapore138602Singapore Energy Research Institute@NTU ERI@NInterdisciplinary Graduate SchoolNanyang Technological UniversitySingapore 639798Singapore

Carbonate electrolytes are one of the most desirable electrolytes for high-energy lithium-sulfur batteries(LSBs)because of their successful implementation in commercial Li-ion *** low-polysulfide-solubility feature of some carbonate solvents also makes them very promising for overcoming the shuttle effects of ***,regular sulfur electrodes experience undesired electrochemical mechanisms in carbonate electrolytes due to side *** this study,we report a catalytic redox mechanism of sulfur in propylene carbonate(PC)electrolyte based on a compari-son *** catalytic mechanism is characterized by the interactions between polysulfides and dual N/O functional groups on the host carbon,which largely prevents side reactions between pol-ysulfides and the carbonate *** a mechanism coupled with the low-polysulfide-solubility feature leads to stable cycling of LSBs in PC *** dual N/O functional groups are identified via a density functional theory *** work provides an alternative route for enabling LSBs in carbonate electrolytes.

关键词： Energy storage Lithium-sulfur battery Catalytic redox reaction Porous carbon Carbonate electrolyte

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Biomass-Derived Porous Carbon-Based Nanostructures for Microwave Absorption

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Nano-Micro Letters 2019年第2期11卷 81-97页

作者： Huanqin Zhao Yan Cheng Wei Liu Lieji Yang Baoshan Zhang luyuan paul wang Guangbin Ji Zhichuan J.Xu College of Materials Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing 210016People’s Republic of China School of Electronic Science and Engineering Nanjing UniversityNanjing 210093People’s Republic of China School of Materials Sciences and Engineering Nanyang Technological University50 Nanyang AvenueSingapore 639798Singapore Singapore-HUJ Alliance for Research and Enterprise NEW-CREATE Phase IICampus for Research Excellence and Technological Enterprise(CREATE)Singapore 138602Singapore

Currently,electromagnetic(EM) pollution poses severe complication toward the operation of electronic devices and biological *** this end,it is pertinent to develop novel microwave absorbers through compositional and structural *** carbon(PC)materials demonstrate great potential in EM wave absorption due to their ultralow density,large surface area,and excellent dielectric loss ***,the large-scale production of PC materials through low-cost and simple synthetic route is a *** PC materials through biomass sources is a sustainable,ubiquitous,and low-cost method,which comes with many desired features,such as hierarchical texture,periodic pattern,and some unique *** the bio-inspired microstructure to manufacture PC materials in mild condition is *** this review,we summarize the EM wave absorption application of biomass-derived PC materials from optimizing structureand designing *** corresponding synthetic mechanisms and development prospects are discussed as *** perspective in this field is given at the end of the article.

关键词： Biomass resource Porous carbon Microwave absorption

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Quasi-static and dynamic compressive behaviour of additively manufactured Menger fractal cube structures

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Defence Technology（防务技术） 2024年第7期37卷 39-49页

作者： Damith Mohotti Dakshitha Weerasinghe Madhusha Bogahawaththa Hongxu wang Kasun Wijesooriya paul JHazell School of Engineering and Technology UNSWCanberraACT2600Australia School of Civil Mining and Environmental EngineeringFaculty of Engineering and Information SciencesUniversity of WollongongWollongongNSWAustralia

This paper presents the first-ever investigation of Menger fractal cubes'quasi-static compression and impact *** cubes with different void ratios were 3D printed using polylactic acid(PLA)with dimensions of 40 mm×40 mm×40 *** different orders of Menger cubes with different void ratios were considered,namely M1 with a void ratio of 0.26,M2 with a void ratio of 0.45,and M3with a void ratio of ***-static Compression tests were conducted using a universal testing machine,while the drop hammer was used to observe the behaviour under impact *** fracture mechanism,energy efficiency and force-time histories were *** the structured nature of the void formation and predictability of the failure modes,the Menger geometry showed some promise compared to other alternatives,such as foams and *** the increasing void ratio,the Menger geometries show force-displacement behaviour similar to hyper-elastic materials such as rubber and *** third-order Menger cubes showed the highest energy absorption efficiency compared to the other two geometries in this *** findings of the present work reveal the possibility of using additively manufactured Menger geometries as an energy-efficient system capable of reducing the transmitting force in applications such as crash barriers.

关键词： Additive manufacturing Fractal geometries Menger cube Energy absorption Quasi-static

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马克思对蒲鲁东资本观的批判性超越及其当代价值

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当代经济研究 2024年第3期343卷 28-36页

作者：王璐源北京工业大学马克思主义学院北京100124

在蒲鲁东看来,资本是表征着平等关系的价值和产品,只是由于取息的贷放才使其具有了剥削性,只要取消贷放、消灭借贷资本就能恢复资本的平等本性并消除剥削。一方面,马克思认为,剥削劳动即通过无偿占有工人的剩余价值来实现价值增殖,乃是... 详细信息

在蒲鲁东看来,资本是表征着平等关系的价值和产品,只是由于取息的贷放才使其具有了剥削性,只要取消贷放、消灭借贷资本就能恢复资本的平等本性并消除剥削。一方面,马克思认为,剥削劳动即通过无偿占有工人的剩余价值来实现价值增殖,乃是一切资本的普遍本性。为此,资本家必须与工人发生雇佣关系,后者作为一种单向度、不平等的权力-支配关系构成资本主义生产关系的实际内容。另一方面,马克思把资本看作是一种“形式规定”,它由“物质规定”和“本质规定”耦合而成,前者指价值和产品等物质载体,后者则指雇佣关系这种独特的生产关系。把资本等同于价值和产品,表明蒲鲁东并不理解资本的本质规定和物质规定的区别;认为交换价值永远不会发展为资本,则表明他也不理解二者的联系。马克思对蒲鲁东资本观的批判性超越,为我们正确认识和把握资本的特性和行为规律,以中国式现代化全面推进中华民族伟大复兴提供了理论基础和方法论指引。

关键词：资本形式规定资本话语蒲鲁东马克思

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A review of data-driven whole-life state of health prediction for lithium-ion batteries:Data preprocessing,aging characteristics,algorithms,and future challenges

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Journal of Energy Chemistry 2024年第10期97卷 630-649,I0013页

作者： Yanxin Xie Shunli wang Gexiang Zhang paul Takyi-Aninakwa Carlos Fernandez Frede Blaabjerg School of Information Engineering Southwest University of Science and TechnologyMianyang 621010SichuanChina College of Electric Power Inner Mongolia University of TechnologyHohhot 010080Inner MongoliaChina School of Pharmacy and Life Sciences Robert Gordon UniversityAberdeen AB10-7GJUK Department of Energy Technology Aalborg UniversityPontoppidanstraede 1119220 Aalborg EastDenmark

Lithium-ion batteries are the preferred green energy storage method and are equipped with intelligent battery management systems(BMSs)that efficiently manage the *** not only ensures the safety performance of the batteries but also significantly improves their efficiency and reduces their damage *** their whole life cycle,lithium-ion batteries undergo aging and performance degradation due to diverse external environments and irregular degradation of internal *** degradation is reflected in the state of health(SOH)***,this review offers the first comprehensive analysis of battery SOH estimation strategies across the entire lifecycle over the past five years,highlighting common research focuses rooted in data-driven *** delves into various dimensions such as dataset integration and preprocessing,health feature parameter extraction,and the construction of SOH estimation *** approaches unearth hidden insights within data,addressing the inherent tension between computational complexity and estimation *** enha nce support for in-vehicle implementation,cloud computing,and the echelon technologies of battery recycling,remanufacturing,and reuse,as well as to offer insights into these technologies,a segmented management approach will be introduced in the *** will encompass source domain data processing,multi-feature factor reconfiguration,hybrid drive modeling,parameter correction mechanisms,and fulltime health *** on the best SOH estimation outcomes,health strategies tailored to different stages can be devised in the future,leading to the establishment of a comprehensive SOH assessment *** will mitigate cross-domain distribution disparities and facilitate adaptation to a broader array of dynamic operation *** article reviews the current research landscape from four perspectives and discusses the challenges that lie *** and practitioners can gain

关键词： Lithium-ion batteries Whole life cycle Aging mechanism Data-driven approach State of health Battery management system

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Boson star superradiance

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Science China(Physics,Mechanics & Astronomy) 2024年第6期67卷 69-78页

作者： He-Yu Gao paul M.Saffin Yi-Jie wang Qi-Xin Xie Shuang-Yong Zhou School of Physical Sciences University of Science and Technology of ChinaHefei 230026China School of Physics and Astronomy University of NottinghamUniversity ParkNottingham NG72RDUK Interdisciplinary Center for Theoretical Study University of Science and Technology of ChinaHefei 230026China Peng Huanwu Center for Fundamental Theory Hefei 230026China

Recently,it has been realized that in some systems internal space rotation can induce energy amplification for scattered waves,similar to rotation in real *** particularly,it has been shown that energy extraction is possible for a Q-ball,a stationary non-topological soliton that is coherently rotating in its field *** this paper,we generalize the analysis to the case of boson stars,and show that the same energy extraction mechanism still works for boson stars.

关键词： superradiance boson star field space rotation

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Engineering the axial coordination of cobalt single atom catalysts for efficient photocatalytic hydrogen evolution

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Nano Research 2024年第6期17卷 5114-5121页

作者： Ning Kang Lingwen Liao Xue Zhang Zhen He Binlu Yu Jiahong wang Yongquan Qu paul KChu Seeram Ramakrishna Xue-Feng Yu Xin wang Licheng Bai Materials Interfaces Center Shenzhen Institute of Advanced TechnologyChinese Academy of Sciences(CAS)Shenzhen 518055China Key Laboratory of Materials Physics Anhui Key Laboratory of Nanomaterials and NanotechnologyCAS Center for Excellence in NanoscienceInstitute of Solid State PhysicsChinese Academy of SciencesHefei 230031China Department of Chemistry City University of Hong KongKowloonHong Kong 999077China Hong Kong Branch of National Precious Metals Material Engineering Research Center(NPMM) City University of Hong KongKowloonHong Kong 999077China Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Department of Physics and Department of Materials Science and Engineering City University of Hong KongKowloonHong Kong 999077China National University of Singapore(NUS)Centre for Nanofibers and Nanotechnology Department of Mechanical EngineeringNational University of SingaporeSingapore 117542Singapore

Improving the catalytic activity of non-noble metal single atom catalysts(SACs)has attracted considerable attention in materials *** optimizing the local electronic structure of single atom can greatly improve their catalytic activity,it often involves in-plane modulation and requires high ***,we report a novel strategy to manipulate the local electronic structure of SACs via the modulation of axial Co-S bond anchored onto graphitic carbon nitride(C_(3)N_(4))at room temperature(RT).Each Co atom is bonded to four N atoms and one S atom(Co-(N,S)/C_(3)N_(4)).Owing to the greater electronegativity of S in the Co-S bond,the local electronic structure of the Co atoms is available to be controlled at a relatively moderate ***,when employed for the photocatalytic hydrogen evolution reaction,the adsorption energy of intermediate hydrogen(H*)on the Co atoms is remarkably *** the presence of the Co-(N,S)/C_(3)N_(4)SACs,the hydrogen evolution rates reach up to 10 mmol/(g·h),which is nearly 10 and 2.5 times greater than the rates in the presence of previously reported transition metal/C_(3)N_(4)and noble platinum nanoparticles(PtNPs)/C_(3)N_(4)catalysts,*** to the tailorable axial Co-S bond in the SAC,the local electronic structure of the Co atoms can be further optimized for other photocatalytic *** axial coordination engineering strategy is universal in catalyst designing and can be used for a variety of photocatalytic applications.

关键词： transition metal single-atom local electronic structure photocatalytic hydrogen evolution graphitic carbon nitride axial coordination environment

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Syntheses,structures,and properties of three coordination polymers based on 5⁃ethylpyridine⁃2,3⁃dicarboxylic acid and N⁃containing ligands

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无机化学学报 2024年第10期40卷 1975-1985页

作者： TANG Long BIAN Yaxin CHEN luyuan HOU Xiangyang wang Xiao wang Jijiang Yan′an University Key Laboratory of New Energy&New Functional Materials Department of Chemistry and Chemical EngineeringShaanxi Key Laboratory of Chemical Reaction EngineeringYan′an UniversityYan′anShaanxi 716000China Shaanxi Jingyi Chemical Co. Ltd.YulinShaanxi 719300China

Three coordination polymers[Mn(epda)(2,2'⁃bipy)(H_(2)O)](1),[Mn(epda)(phen)](2),and[Co_(2)(epda)2(bpe)2(H_(2)O)_(4)]·5H_(2)O(3)(H2epda=5⁃ethyl⁃pyridine⁃2,3⁃dicarboxylic acid,2,2'⁃bipy=2,2'⁃bipyridine,phen=phenanthroline,bpe=1,2⁃bis(4⁃pyridyl)ethylene)were synthesized by solvothermal reactions and characterized by single⁃crystal X⁃ray diffraction,thermogravimetric analyses,IR spectroscopy and elemental analysis.1 displays a 1D chain struc⁃ture,and these chains are joined by O-H…O hydrogen bonding andπ⁃πstacking interactions to generate a 2D layer structure.2 displays a 2D layer structure,and adjacent layers are generated 3D architecture throughπ⁃πstacking interactions.3 displays a 1D chain structure,and adjacent chains are generated double layer structure through O-H…O hydrogen *** fluorescent properties of 1 and 3 indicate that they can potentially be used as a luminescent sensor.1 was highly selective and sensitive towards o⁃nitrophenol through different detection mechanisms,however,3 was highly selective and sensitive towards 2,4,6⁃*** addition,the magnetic behavior of 2 has also been ***:2172533,1,2355773,2,2355774,3.

关键词： coordination polymers 5⁃ethyl⁃pyridine⁃2,3⁃dicarboxylate ligand crystal structures fluorescent properties magnetic behavior

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Advanced strategies for marine antifouling based on nanomaterial-enhanced functional PDMS coatings

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Nano Materials Science 2024年第4期6卷 375-395页

作者： Xiaohui Shi Hao Wei Wenjun Zhou paul E.D.Soto Rodriguez Cunguo Lin Lei wang Zhijia Zhang School of Materials Science and Chemical Engineering Harbin Engineering University Qingdao Innovation and Development Center of Harbin Engineering University State Key Laboratory for Marin Corrosion and Protection Luoyang Ship Material Research Institute (LSMRI) Instituto de Estudios Avanzados IUDEA Departamento de Física Universidad de La Laguna C/Astrofísico Francisco Sanchez School of Chemistry and Chemical Engineering Harbin Institute of Technology

Marine biofouling seriously affects human marine exploitation and transportation activities, to which marine antifouling(AF) coatings are considered to be the most cost-effective solution. Since the mid-20th century, human beings have dedicated their efforts on developing AF coatings with long cycle and high performance, leading to a large number of non-target organisms? distortion, death and marine environmental pollution. Polydimethylsiloxane(PDMS), is considered as one of the representative environment-friendly AF materials thanks to its non-toxic, hydrophobic, low surface energy and AF properties. However, PDMS AF coatings are prone to mechanical damage, weak adhesion strength to substrate, and poor static AF effect, which seriously restrict their use in the ocean. The rapid development of various nanomaterials provides an opportunity to enhance and improve the mechanical properties and antifouling properties of PDMS coating by embedding *** on our research background and the problems faced in our laboratory, this article presents an overview of the current progress in the fields of PDMS composite coatings enhanced by different nanomaterials, with the discussion focused on the advantages and main bottlenecks currently encountered in this field. Finally, we propose an outlook, hoping to provide fundamental guidance for the development of marine AF field.

关键词： Nanomaterials Antifouling PDMS composites Environment-friendly Marine biofouling

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基于机器学习-网格搜索优化的砂土液化预测

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振动与冲击 2024年第5期43卷 82-93页

作者：王昭栋王自法李兆焱苗鹏宇吴禄源河南大学土木建筑学院河南开封475004 中国地震局工程力学研究所哈尔滨150080 中震科建(广东)防灾减灾研究院广东韶关512026

砂土液化是一种破坏力较强的地震次生灾害,传统的砂土液化判别方法存在一定的局限性。提出两种液化判别方法,第一种是基于新西兰岩土数据库(New Zealand Geotechnical Database,NZGD)中519组静力触探试验数据,建立具有砂土液化预测功能... 详细信息

砂土液化是一种破坏力较强的地震次生灾害,传统的砂土液化判别方法存在一定的局限性。提出两种液化判别方法,第一种是基于新西兰岩土数据库(New Zealand Geotechnical Database,NZGD)中519组静力触探试验数据,建立具有砂土液化预测功能的机器学习模型。首先建立支持向量机(support vector machine,SVM)、随机森林(random forest,RF)、XGboost(eXtreme gradient boosting,XGB)三种机器学习分类模型,运用网格搜索(GridSearchCV)法进行超参数优化后,采用整体精度(overall accuracy,OA)、精确率(P)、召回率(R)、F_(1)值对模型进行性能评估,对历史液化数据进行模型验证并与国内外方法进行结果对比。第二种是基于历史震害数据,采用经验判断法确定的静力触探初判条件。结果表明:随机森林可作为一种具有较强的预测能力的液化判别模型,通过与国内《岩土工程勘察规范》以及国际Olsen方法进行对比,选取要素简便且计算迅速的随机森林能够达到与上述两种权威方法接近的准确性,是一种可实行的液化判别模型;此外,基于历史液化数据库归结出不同烈度下,具备液化埋深限制的锥尖阻力阈值,经数据验证在7烈度区、8烈度区、9烈度区的准确率良好,与《岩土工程勘察规范》进行对比发现有可操作性好、可解释性强、可适用性广等优点。所建立的模型对砂土液化预测具有较强的适用性,静力触探初判条件亦可作为快速液化判别的参考值,两种方法结合可对科学研究和工程建设提供较好的参考价值。

关键词：砂土液化机器学习液化预测静力触探初判条件网格搜索

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