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Quasi-freestanding, striped WS2 monolayer with an invariable band gap on Au（001）

Nano Research 2017年第11期10卷 3875-3884页

作者： Min Hong Xiebo zhou Jianping Shi Yue qi Zhepeng Zhang qiyi Fang Yaguang Guo Yajuan Sun Zhongfan Liu Yuanchang Li qian Wang Yanfeng Zhang Department of Materials science and engineering College of Engineering Peking University Beijing 100871 China Center for Nanochemistry(CNC) Beijing National Laboratory for Molecular Sciences College of Chemistry and Molecular Engineering Academy for Advanced Interdisciplinary Studies Peking University Beijing 100871 China State Key Laboratory of Coal-based Low-carbon Energy ENN Group Co. Ltd. Langfang 065001 China National Center for Nanoscience and Technology Chinese Academy of Sciences Beijing 100190 China Center for Applied Physics and Technology Peking University Beijing 100871 China

Revealing the structural/electronic features and interfacial interactions of monolayer MoS2 and WS2 on metals is essential to evaluating the performance of related *** this study,we focused on the atomic-scale features of monolayer WS2 on Au（001） synthesized via chemical vapor *** tunneling microscopy and spectroscopy reveal that the WS2/Au（001） system exhibits a striped superstructure similar to that of MoS2/Au（001） but weaker interfacial interactions,as evidenced by experimental and theoretical ***,the WS2/Au（001） band gap exhibits a relatively intrinsic value of ～ 2.0 ***,the band gap can gradually decrease to ～ 1.5 eV when the sample annealing temperature increases from ～3.0 to 720 ℃.In addition,the doping level （or Fermi energy） of monolayer WS2/Au（001） varies little over the valley and ridge regions of the striped patterns because of the homogenous distributions of point defects introduced by ***,this work provides an in-depth investigation into the interfacial interactions and electronic properties of monolayer MX2 on metal substrates.

关键词： WS2 Au(001) striped superstructure interfacial interaction STM/STS

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High-entropy alloy stabilized and activated Pt clusters for highly efficient electrocatalysis

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SusMat 2022年第2期2卷 186-196页

作者： Wenhui Shi Hanwen Liu Zezhou Li Chenghang Li Jihan zhou Yifei Yuan feng Jiang (Kelvin)Kun Fu Yonggang Yao State Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhanP.R.China beijing National Laboratory for molecular sciences College of Chemistry and Molecular EngineeringPeking UniversityBeijingP.R.China college of chemistry and Materials engineering Wenzhou UniversityWenzhouP.R.China Sustainable Functional Biomaterials Lab Department of Wood ScienceUniversity of British ColumbiaVancouverCanada Department of Mechanical engineering University of DelawareNewarkUSA

Although Pt and other noble metals are the state-of-the-art catalysts for various energy conversion applications,their low reserve,high cost,and instability limit their large-scale ***,we report a hybrid catalysts design featuring noble metal clusters(e.g.,Pt)uniformly dispersed and stabilized on high-entropy alloy nanoparticles(HEA,e.g.,FeCoNiCu),denoted as HEA@Pt,which is prepared via ultra-fast shock synthesis(∼3.0 ms)for HEA alloying combined with Pt galvanic replacement for surface *** our design,the HEA core critically ensures high dispersity,stability,and tunability of the surface Pt clusters through high entropy stabilization and core-shell *** an example in the hydrogen evolution reaction,HEA@Pt achieved a significant mass activity of 23. A/gPt,which is 9.4,3.6,and 1.9-times higher compared to that of homogeneous FeCoNiCuPt(HEA-Pt),Pt,and commercial Pt/C,*** also demonstrated noble Ir stabilized on FeCoNiCrMn nanoparticles(HEA-5@Ir),achieving excellent anodic oxygen evolution performance and highly efficient overall water splitting when combined with the cathodic HEA@***,our work developed a general catalysts design strategies by using high entropy nanoparticles for effective dispersion,stabilization,and modulation of surface active sites,achieving a harmonious combination of high activity,stability,and low cost.

关键词： entropy stabilization high entropy alloy catalysts hybrid structure hydrogen evolution reaction overall water splitting

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Construction of a new class of MJCP system

Construction of a new class of MJCP system

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2014年两岸三地高分子液晶态与超分子有序结构学术研讨会（暨第十三届全国高分子液晶态与超分子有序结构学术论文报告会）

作者： Xing-He Fan Yu-feng Zhu Zhen-Yu Zhang De-Zhao Hao Zhihao Shen qi-feng {3. beijing National Laboratory for molecular sciences Key Laboratory of Polymer Chemistry and Physics of Ministry of EducationCollege of Chemistry and Molecular EngineeringPeking University

Mesogen-jacketed liquid crystalline polymer(MJLCP),proposed by zhou et *** the late 1980s,is a liquid crystalline polymer(LCP)with bulky side groups(often mesogens)laterally attached to the main chain through a short spacer or a single covalent bond.1 With the consideration of the high tolerance of functional groups like fullerene,the convenient synthesis by ring-opening metathesis

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Impeded degradation of perovskite solar cells via the dual interfacial modification of siloxane

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science China chemistry 2022年第11期65卷 2299-2306页

作者： Xiao Zhang Changsu Cao Yang Bai Cheng Zhu Huachao Zai Sai Ma Yihua Chen Zhenhua Cui Congbo Shi Chenyue Wang Chenxiao zhou Guizhou Yuan Ziyan Gao Jiawang Hong Jie Dou Hao Wang Huanping zhou Hai Xiao Jun Li {3. Chen beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing100081China Experimental Center of Advanced Materials School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Department of chemistry and Key Laboratory of Organic Optoelectronics and molecular engineering of Ministry of Education Tsinghua UniversityBeijing 100084China Department of chemistry Southern University of Science and TechnologyShenzhen 518055China Department of Materials science and engineering College of EngineeringPeking UniversityBeijing 100871China Shanghai Synchrotron Radiation Facility(SSRF) Zhangjiang LabShanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201204China School of Aerospace engineering Beijing Institute of TechnologyBeijing 100081China

It is challenging to improve the long-term stability of perovskite solar cells(PSCs) without sacrificing efficiency. The perovskite absorbers degrade from the film surface/interfaces, which follows entangled mechanisms that have not been fully revealed ***, we decouple and elaborate two distinctive pathways regarding film degradation based on ***, a dual interfacial modification strategy has been developed for improving the material’s intrinsic stability, thus leading to the film degrading in a more retardant pathway. The corresponding PSCs achieve a stable power output efficiency of 23.75%.More importantly, the unencapsulated PSCs devices retain over 93. of their initial PCE after the maximum power point(MPP)tracking under the continuous 1-sun illumination and show significantly improved stability after aged under the thermal treatment or stored in ambient atmosphere for over 1500 hours without obvious PCE decay. This work shows the importance of modulating the degradation pathway on stability improvement, and at the same time, proposes a strategy for designing perovskite-based optoelectronics with excellent performance and stability.

关键词： perovskite solar cells stability degradation kinetics

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Large‑Sized High‑Efficiency Fiber Perovskite Solar Cells Fabricated by Automatic Thin‑Film Coating on Curved Surfaces

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Advanced Fiber Materials 2023年第5期5卷 1799-1809页

作者： qi qi Zhiguang Liu Zhuang Zuo Zongyang Peng Yongping Fu Shaocong Hou Dechun Zou Key Laboratory of polymer chemistry and Physics of Ministry of Education Center for Soft Matter Science and EngineeringCollege of Chemistry and Molecular EngineeringBeijing National Laboratory for Molecular SciencesPeking UniversityBeijing 100871China School of Electrical engineering and Automation Wuhan UniversityWuhan 430072China

Perovskite solar cells in a fiber format have great potential for wearable electronics due to their excellent flexibility,efficient light harvesting,and potentially high power conversion efficiency(PCE).However,the fabrication of large-sized fiber perovskite solar cells(FPSCs)while maintaining high efficiency remains a major challenge because of the difficulty in the formation of uniform crystalline perovskite films on highly curved ***,we report a scale-up automatic approach for the fabrication of large-sized FPSCs via sequential coating of active layers on fiber substrates and posttreatment of perovskite *** focus on understanding the perovskite film formation process on fibers and manage to control the film thickness,morphology,and crystallinity by adjusting the coating speed,precursor solution aging time,and *** a result,a 20.0-cm-long FPSC with a PCE of 7.63.is achieved,and this length is almost ten times longer than those of the previously reported *** work represents a breakthrough in fabricating large-sized high-efficiency FPSCs,which will ultimately lead to practical applications of FPSCs.

关键词： Fiber electronics Perovskite solar cells Large size High efficiency Automatic fabrication

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An Integrated Carbon Dioxide Capture and Methanation Process

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CCS chemistry 2024年第5期6卷 1174-1183页

作者： Xiaochen Zhang Mengzhu Li Xingwu Liu Ang Li Yuchen Deng Mi Peng Yu Zhang Charlotte Vogt Matteo Monai Junxian Gao Xuetao qin Yao Xu qiaolin Yu Meng Wang Guofu Wang Zheng Jiang Xiaodong Han Casper Brady Wei-Xue Li Wu zhou Jin-Xun Liu Bingjun Xu Bert M.Weckhuysen Ding Ma beijing National Laboratory for molecular sciences College of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871 China Academy of Aerospace science and Innovation Beijing 100088 National Energy Center for Coal to Liquids Synfuels China Co.Ltd.Beijing 101400 beijing Key Laboratory of Microstructure and Property of Advanced Materials Beijing University of TechnologyBeijing Inorganic chemistry and Catalysis group Institute for Sustainable and Circular Chemistry and Debye Institute for Nanomaterials ScienceFaculty of ScienceUtrecht University3584 CG Utrecht State Key Laboratory of Coal Conversion Institute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001 Shanghai Synchrotron Radiation Facility Zhangjiang LadShanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201210 Center for Catalytic science and Technology University of DelawareNewarkDelaware 19716 Key Laboratory of Precision and Intelligent chemistry School of Chemistry and Materials ScienceUniversity of Science and Technology of ChinaHefeiAnhui 230026 Hefei National Laboratory University of Science and Technology of ChinaHefei 230088 School of Physical sciences CAS Key Laboratory of Vacuum PhysicsUniversity of Chinese Academy of SciencesBeijing 100049

Reducing the ever-growing level of CO_(2)in the atmosphere is critical for the sustainable development of human society in the context of global *** of the capture and upgrading of CO_(2)is,therefore,highly desirable since each process step is costly,both energetically and ***,we report a CO_(2)direct air capture(DAC)and fixation process that produces *** concentrations of CO_(2)(∼400 ppm)in the air are captured by an aqueous solution of sodium hydroxide to form *** carbonate is subsequently hydrogenated to methane,which is easily separated from the reaction system,catalyzed by TiO2-supported Ru in the aqueous phase with a selectivity of 99.9%among gas-phase *** concurrent regenerated hydroxide,in turn,increases the alkalinity of the aqueous solution for further CO_(2)capture,thereby enabling this one-ofits-kind continuous CO_(2)capture and methanation *** simulations demonstrate the energy feasibility of this CO_(2)DAC and methanation process,highlighting its promise for potential largescale applications.

关键词： CO_(2)capture and methanation process sodium hydroxide carbonate Ru/TiO_(2) catalytic mechanism CO_(2)activation and hydrogenation

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Inorganic/polymer hybrid layer stabilizing anode/electrolyte interfaces in solid-state Li metal batteries

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Nano Research 2020年第12期13卷 3230-3234页

作者： Yiran Hu Yiren Zhong Limin qi Hailiang Wang beijing National Laboratory for molecular sciences(BNLMS) College of Chemistry and Molecular EngineeringPeking UniversityBeijing100871China Department of chemistry and Energy sciences Institute Yale UniversityWest HavenCT06516USA

Li1.5Al0.5Ge1.5(PO4)3.LAGP)is a solid-state electrolyte with high ionic conductivity and air stability but poor chemical stability and high interfacial impedance when directly contacted with Li *** this work,we develop an inorganic/polymer hybrid interlayer composed of Li bis(trifluoromethylsulfonyl)imide/poly(vinylene carbonate)polymer electrolyte and SiO2 submicrospheres to stabilize the Li/LAGP *** polymeric component renders high ionic conductance and low interfacial resistance,whereas the inorganic component imparts flame retardancy and a physical barrier to the known Li-LAGP side reaction,together enabling stable Li stripping/plating for more than 1,500 h at room *** this interlayer at both electrodes,all-solid-state Li∥LiFePO4 full cells with stable cycling performance are also demonstrated.

关键词： Li1.5Al0.5Ge1.5(PO4)3.LAGP) hybrid interlayer solid-state electrolyte Li metal battery interface

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Emerging Internet of Things driven carbon nanotubes-based devices

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Nano Research 2022年第5期15卷 4613-4637页

作者： Shu Zhang Jinbo Pang Yufen Li feng Yang Thomas Gemming Kai Wang Xiao Wang Songang Peng Xiaoyan Liu Bin Chang Hong Liu Weijia zhou Gianaurelio Cuniberti Mark HRümmeli Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong Institute for Advanced Interdisciplinary Research(iAIR)University of JinanJinan 250022China Department of chemistry Guangdong Provincial Key Laboratory of CatalysisSouthern University of Science and TechnologyShenzhen 518055China Leibniz Institute for Solid State and Materials Research Dresden P.O.Box 270116Dresden D-01171Germany State Key Laboratory of Crystal Materials Center of Bio&Micro/Nano Functional MaterialsShandong University27 Shandanan RoadJinan 250100China School of Electrical engineering Qingdao UniversityQingdao 266071China Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences 1068 Xueyuan AvenueShenzhen University TownShenzhen 518055China High-Frequency High-Voltage Device and Integrated Circuits R&D Center Institute of MicroelectronicsChinese Academy of SciencesBeijing 100029China Key Laboratory of Microelectronic Devices&Integrated Technology Institute of MicroelectronicsChinese Academy of SciencesBeijing 100029China School of chemistry and Chemical engineering University of JinanJinan 250022China college of Energy Soochow Institute for Energy and Materials InnovationsSoochow UniversitySuzhou 215006China Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province Soochow UniversitySuzhou 215006China Centre of polymer and Carbon Materials Polish Academy of SciencesM.Curie Sklodowskiej 34Zabrze 41-819Poland Institute of Environmental Technology(CEET) VSB-Technical University of Ostrava17.Listopadu 15Ostrava 70833Czech Republic Dresden Center for Computational Materials science Technische Universität DresdenDresden 01062Germany Dresden Center for Intelligent Materials(GCL DCIM) Technische Universität DresdenDresden 01062Germany Institute for Materials science and Max Bergmann Center of Biomaterials Technische Universität DresdenDresden 01069Germany Center for Advancing Electronics D

Carbon nanotubes(CNTs)have attracted great attentions in the field of electronics,sensors,healthcare,and energy *** emerging applications have driven the carbon nanotube research in a rapid ***,the structure control over CNTs has inspired an intensive research vortex due to the high promises in electronic and optical device ***,this in-depth review is anticipated to provide insights into the controllable synthesis and applications of high-quality ***,the general synthesis and post-purification of CNTs are briefly ***,the state-of-the-art electronic device applications are discussed,including field-effect transistors,gas sensors,DNA biosensors,and pressure ***,the optical sensors are delivered based on the *** addition,energy applications of CNTs are discussed such as thermoelectric energy ***,future opportunities are proposed for the Internet of Things(IoT)oriented sensors,data processing,and artificial intelligence.

关键词： carbon nanotubes electronics sensors electronic skins Internet of Things artificial intelligence

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Recent progress in organic solar cells(PartⅠmaterial science)

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science China chemistry 2022年第8期65卷 224-268页

作者： Yahui Liu Bowen Liu Chang-qi Ma Fei Huang Guitao feng Hongzheng Chen Jianhui Hou Lingpeng Yan qingya Wei Qun Luo qinye Bao Wei Ma Wei Liu Weiwei Li Xiangjian Wan Xiaotian Hu Yanchun Han Yaowen Li Yinhua zhou Yingping Zou Yiwang Chen Yongfang Li Yongsheng Chen Zheng Tang Zhicheng Hu Zhi-Guo Zhang Zhishan Bo college of Textiles&Clothing State Key Laboratory of Bio-fibers and Eco-textilesQingdao UniversityQingdao 266071China Suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of SciencesSuzhou 215123China Institute of polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and DevicesSouth China University of TechnologyGuangzhou 510640China beijing Advanced Innovation Center for Soft Matter science and engineering&State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijing 100029China State Key Laboratory of Silicon Materials MOE Key Laboratory of Macromolecular Synthesis and FunctionalizationDepartment of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China beijing National Laboratory for molecular sciences Institute of ChemistryChinese Academy of SciencesBeijing 100190China State Key Laboratory of Powder Metallurgy College of Chemistry and Chemical EngineeringCentral South UniversityChangsha 410083China School of Physics and Electronic science East China Normal UniversityShanghai 200241China State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an 710049China State Key Laboratory and Institute of Elemento-Organic chemistry Key Laboratory of Functional Polymer MaterialsCollege of ChemistryNankai UniversityTianjin 300071China college of chemistry/Institute of polymers and Energy chemistry(IPEC) Nanchang UniversityNanchang 330031China State Key Laboratory of polymer Physics and chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China Laboratory of Advanced Optoelectronic Materials College of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China Center for Advanced Low-Dimension Materials State Key Laboratory for Modification of Chemical Fibers and Polymer Material

During past several years,the photovoltaic performances of organic solar cells(OSCs)have achieved rapid progress with power conversion efficiencies(PCEs)over 18%,demonstrating a great practical application *** development of material science including conjugated polymer donors,oligomer-like organic molecule donors,fused and nonfused ring acceptors,polymer acceptors,single-component organic solar cells and water/alcohol soluble interface materials are the key research topics in OSC ***,the recent progress of these aspects is systematically ***,the current problems and future development are also discussed.

关键词： organic solar cells power conversion efficiency photovoltaic materials polymer solar cells

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Mechanical Properties of Interlocked-ring polymers: A molecular Dynamics Simulation Study

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Chinese Journal of polymer science 2019年第12期37卷 1298-1304,I0008页

作者： Zheng-Tao Wu Jia-Jia zhou college of engineering Zhejiang Normal UniversityJinhua 321004China School of chemistry Beihang UniversityBeijing 100191China

Interlocked-ring polymers,also known as polycatenanes,possess an interesting molecular *** polymers are composed of many interlocked rings in a linear *** topological constrain between neighboring rings distinguishes the interlockedring polymer from its linear *** we present extensive molecular dynamic simulations on the interlocked-ring polymers and analyze the static properties of the *** applying external forces to the polymer,we also study the force-extension curves of the polymer,which provides rich information about the mechanical properties of the interlockedring polymers.

关键词： Poly catenanes molecular dynamics simulation Force-extension Entanglement

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