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Tailoring Nitrogen Terminals on MXene Enables Fast Charging and Stable Cycling Na-Ion Batteries at Low Temperature

Nano-Micro Letters 2022年第9期14卷 63-78页

作者： Yang Xia Lanfang Que Fuda Yu Liang Deng Zhenjin Liang Yunshan Jiang Meiyan Sun Lei Zhao Zhenbo Wang MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage State Key Lab of Urban Water Resources and EnvironmentSchool of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001People’s Republic of China Engineering Research Center of Environment‑Friendly Functional Materials Ministry of EducationInstitute of Materials Physical ChemistryHuaqiao UniversityXiamen 361021People’s Republic of China The Institute for Advanced Studies Wuhan UniversityWuhan 430072People’s Republic of China College of Materials Science and Engineering Shenzhen UniversityShenzhen 518071People’s Republic of China

Sodium-ion batteries stand a chance of enabling fast charging ability and long lifespan while operating at low temperature(low-T).However,sluggish kinetics and aggravated dendrites present two major challenges for anodes to achieve the goal at ***,we propose an interlayer confined strategy for tailoring nitrogen terminals on Ti_(3)C_(2) MXene(Ti_(3)C_(2)-N_(funct)) to address these *** introduction of nitrogen terminals endows Ti_(3)C_(2)-N_(funct) with large interlayer space and charge redistribution,improved conductivity and sufficient adsorption sites for Na^(+),which improves the possibility of Ti_(3)C_(2) for accommodating more Na atoms,further enhancing the Na^(+) storage capability of Ti_(3)C_(2).As revealed,Ti_(3)C_(2)-N_(funct) not only possesses a lower Na-ion diffusion energy barrier and charge trans-fer activation energy,but also exhibits Na^(+)-solvent co-intercalation behavior to circumvent a high de-solvation energy barrier at ***,the solid electrolyte interface dominated by inorganic com-pounds is more beneficial for the Na^(+)transfer at the electrode/electrolyte *** with of the unmodified sample,Ti_(3)C_(2)-Nfunct exhibits a twofold capacity(201 mAh g^(-1)),fast-charging ability(18 min at 80% capacity retention),and great superiority in cycle life(80.9%@5000 cycles)at -25℃.When coupling with Na_(3)V_(2)(PO_(4))_(2)F_(3) cathode,the Ti_(3)C_(2)-N_(funct)//NVPF exhibits high energy density and cycle stability at -25℃.

关键词： Tailoring nitrogen terminals Na^(+)-solvent co-intercalation Interfacial kinetics Fast charging Low-temperature SIBs

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Twin crystal structured Al-10 wt.% Mg alloy over broad velocity conditions achieved by high thermal gradient directional solidification

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Journal of materials Science & technology 2021年第12期71卷 152-162页

作者： Luyan Yang Shuangming Li Kai Fan Yang Li Yanhui Chen Wei Li Deli Kong Pengfei Cao Haibo Long Ang Li Institute of Microstructure and Properties of Advanced Materials Faculty of Materials and ManufacturingBeijing University of TechnologyBeijing100124China State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi’an710072China Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons Forschungszentrum Jülich52428JülichGermany

Twin crystal structured Al-10 wt.% Mg alloys that were grown over a broad solidification velocity range were prepared and studied for the first *** high thermal gradient(G)and growth velocity(V)of directional solidification resulted in the dominant solidification of twins:the twinned dendrite trunks at constant high Vs curved in the G direction with large angles in 7 mm diameter crucibles and invaded regular columnar grains because of a distinct kinetics growth *** deceleration experiments were designed to produce twin crystals that evolved with lower values of V(100,10,and 0.5μm/s)and had a structural coarsening *** cell growth in the absence of arms occurred at a growth velocity of 10μm/s.A coherency loss was observed at a growth velocity of 0.5μm/s with straight coherent twin boundaries turning into curved incoherent *** theoretical analyses were performed to understand the structural evolution of the *** results demonstrate the possibility of producing dense and controlled twin crystals in the Al-Mg system under most industrial production conditions;thus,this approach can be a new structural choice for designing Al-Mg-based alloys that have widespread commercial applications.

关键词： Directional solidification Aluminum alloy Microstructural evolution Feathery crystals Twinned dendrites

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Recent advances in synthesis strategies and solar-to-hydrogen evolution of 1T phase MS_(2)(M=W,Mo)co-catalysts

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Journal of materials Science & technology 2022年第6期101卷 242-263页

作者： Shuo Li Jinyan Xiong Xueteng Zhu Weijie Li Rong Chen Gang Cheng School of Chemistry and Environmental Engineering Wuhan Institute of TechnologyDonghu New&High Technology Development ZoneWuhan 430205China College of Chemistry and Chemical Engineering Hubei Key Laboratory of Biomass Fibers and Ecodyeing&FinishingWuhan Textile UniversityWuhan 430200China School of Materials Science and Hydrogen Energy Foshan UniversityFoshan 528000China Institute for Superconducting and Electronic Materials Innovation CampusSquires WayUniversity of WollongongNorth WollongongNSW 2500Australia Henan Institute of Advanced Technology Zhengzhou UniversityZhengzhou 450002China

Photocatalytic water splitting is a promising strategy to produce hydrogen as a sustainable and clean energy carrier,based on abundant solar energy and semiconductor photocatalysts,and it has received extensive research and discussion over the past several *** is challenging,however,to achieve an efficient solar-to-hydrogen evolution process with a single particulate photocatalyst due to the weak solar spectrum harvest and the rapid recombination of photogenerated electron-hole pairs during the photocatalysis *** semiconductors to create different co-catalysts presents a viable solution to the above ***,semiconductor photocatalysts modified by different transition metal sulfidebased co-catalysts with designed functions,especially in light absorption enhancement and chargecarrier-separation efficiency promotion,have attracted much *** continued breakthroughs have been made in the preparation,modification,and solar-to-hydrogen evolution application of the 1T phase MS_(2)(M=W,Mo)co-catalyst-based photocatalysis system in recent years,we believe that a comprehensive review of this kind of co-catalyst would further promote its research and development to address the energy and environmental challenges that we are currently ***,recent studies and progress are summarized on the fabrication of 1T phase MS_(2)(M=W,Mo)-based co-catalyst materials,as well as their roles and functional mechanisms for photocatalytic H;***,concluding perspectives on the opportunities in and challenges for the further exploration of the 1T-MS_(2)(M=W,Mo)-based solar-tohydrogen evolution system are presented.

关键词： Solar-to-hydrogen evolution Co-catalysts 1T-MS_(2)(M=W Mo) Water splitting Synthesis strategies Photocatalysis

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Exploiting the donor-acceptor-additive interaction’s morphological effect on the performance of organic solar cells

Aggregate

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Aggregate 2024年第2期5卷 316-327页

作者： Lu Chen Ruijie Ma Jicheng Yi Top Archie Dela Peña Hongxiang Li Qi Wei Cenqi Yan Jiaying Wu Mingjie Li Pei Cheng He Yan Guangye Zhang Gang Li College of New Materials and New Energies Shenzhen Technology UniversityShenzhenChina Department of Chemistry and Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction The Hong Kong University of Science and TechnologyHong KongChina Department of Electrical and Electronic Engineering Research Institute for Smart Energy(RISE)Photonic Research Institute(PRI)The Hong Kong Polytechnic UniversityHong KongChina Department of Applied Physics The Hong Kong Polytechnic UniversityHong KongChina The Hong Kong University of Science and Technology Function HubAdvanced Materials ThrustGuangzhouP.R.China College of Polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengduChina

Organic solar cells(OSCs)have demonstrated over 19%power conversion efficiency(PCE)with the help of material innovation and device ***-working with newly designed materials,traditional solvent additives,1-chloronaphthalene(CN),and 1,8-diodooctane(DIO)are still powerful in morphology modulation towards satisfying ***,we chose recently reported high-performance polymer donors(PM6&D18-Fu)and small molecular acceptors(Y6&L8-BO)as active layer materials and processed them by different conditions(CN or DIO or none).Based on corresponding 12 groups of device results,and their film morphology characterizations(both ex-situ and in-situ ones),the property-performance relationships are revealed case by *** is thereby supposed to be taken as a successful attempt to demonstrate the importance and complexity of donor-acceptoradditive interaction,since the device performance and physics analyses are also tightly combined with morphology ***,ternary blend construction for PCE improvement provides an approaching 19%level and showcases the potential of understanding-guided-optimization(UGO)in the future of OSCs.

关键词： material combinations morphology modulation organic solar cells power conversion efficiency solvent additives

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In-situ grown CuO_(x)nanowire forest on copper foam:A 3D hierarchical and freestanding electrocatalyst with enhanced carbonaceous product selectivity in CO_(2)reduction

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Nano Research Energy 2022年第3期1卷 44-51页

作者： Wenjun Zhang Minghang Jiang Songyuan Yang Yi Hu Bin Mu Zuoxiu Tie Zhong Jin MOE Key Laboratory of Mesoscopic Chemistry MOE Key Laboratory of High Performance Polymer Materials and TechnologyJiangsu Key Laboratory of Advanced Organic MaterialsSchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and MaterialsCollege of Chemical EngineeringNanjing Forestry UniversityNanjing 210037China Nanjing Tieming Energy Technology Co.Ltd. Nanjing 210093China Suzhou Tierui New Energy Technology Co.Ltd. Suzhou 215228China School for Engineering of Matter Transportand EnergyArizona State University501 East Tyler MallTempeAZ 85287USA

Electrocatalytic carbon dioxide(CO_(2))reduction is considered as an economical and environmentally friendly approach to neutralizing and recycling greenhouse gas CO_(2).However,the design of preeminent and robust electrocatalysts for CO_(2)electroreduction is still ***,we report the in-situ growth of dense CuO_(x)nanowire forest on 3D porous Cu foam(CuO_(x)-NWF@Cu-F),which can be directly applied as a freestanding and binder-free working electrode for highly effective electrocatalytic CO_(2)*** adjusting the surface morphology and chemical composition of CuO_(x)nanowires via surface reconstruction,large electrochemically active surface area and abundant Cu(+1)sites were generated,leading to remarkable activity for CO_(2)*** as-prepared hierarchical conductive electrode exhibited an enhanced Faradaic efficiency of 15.0%for ethanol formation(FE_(C_(2)H_(5)OH))and a total Faradaic efficiency of 69.4%for all carbonaceous compounds(FE_(C-total))at a mild applied potential of–0.45 V *** in 0.1 M KHCO_(3)*** achieved a 4-fold increase in FE_(C-total)than that of Cu nanowire forest supported on 3D porous Cu foam(Cu-NWF@Cu-F)obtained by in-situ reduction of the CuO_(x)-NWF@Cu-F via annealing at H_(2)atmosphere,and thereby effectively suppressed the hydrogen evolution side-reaction.

关键词： electrocatalytic CO_(2)reduction CuO_(x)nanowire forest 3D hierarchical nanostructure surface reconstruction enhanced carbonaceous product selectivity

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Novel antibacterial cellulose diacetate-based composite 3D scaffold as potential wound dressing

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Journal of materials Science & technology 2021年第30期89卷 225-232页

作者： Wencheng Liang Mingli Jiang Junyong Zhang Xiaoming Dou Yan Zhou Yun Jiang Li Zhao Meidong Lang Center of Photonics&Bio-Medical Diagnosis School of ScienceEast China University of Science and TechnologyShanghai 200237China State Key Laboratory of Bioreactor Engineering School of BiotechnologyEast China University of Science and TechnologyShanghai 200237China Shanghai Key Laboratory of Advanced Polymeric Materials Key Laboratory for Ultrafine Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and TechnologyShanghai 200237China State Key Laboratory of Bioreactor Engineering New World Institute of BiotechnologyEast China University of Science and TechnologyShanghai 200237China The Library of Zhejiang University of Technology Zhejiang University of TechnologyHangzhou 310023China

In this work,novel antibacterial cellulose diacetate/poly(ethylenimine)/hyaluronic acid(CDA/PEI/HA)composite three-dimension(3D)scaffolds were prepared through electrospinning and ***,CDA/PEI 2D composite nanofiber membranes were prepared by electrospinning,and then the CDA/PEI/HA 3D composite scaffolds were fabricated by post-processing and freeze-drying of CDA/PEI *** particular,HA was added to improve the biocompatibility of composite *** with CDA/PEI scaffolds,CDA/PEI/HA composite scaffolds showed higher water absorbing rate,higher water retention rate and higher mechanical ***,CDA/PEI/HA composite scaffolds with abundant positive charge were benefit for improving antibacterial ***/PEI/HA scaffolds with biology function of HA were benefit for improving hemocompatibility and cell proliferation of CDA/PEI *** summary,antibacterial CDA/PEI/HA scaffolds could protect wound from bacterial infection,improve cellular behavior and accelerate wound ***,CDA/PEI/HA scaffolds could be potential application for wound dressing.

关键词： Cellulose diacetate Electrospinning 3D scaffold Wound dressing

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Carbon nanotubes modified MXene film as a high-performance electrode for supercapacitor

Carbon nanotubes modified MXene film as a high-performance e...

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2022 International Conference on Optoelectronic Information and Functional materials, OIFM 2022

作者： Wang, Yesheng Kong, Dongqing Cui, Yongpeng Xing, Wei State Key Laboratory of Heavy Oil Processing School of Material Science and Engineering China University of Petroleum Qingdao266580 China Weifang Key Lab of Advanced Light Materials Manufacturing and Forming Weifang University of Science and Technology Weifang262700 China

ISBN: (数字)9781510655126

ISBN: (纸本)9781510655119

As a new family of 2D material, MXene has shown a huge potential in the application of supercapacitor because of their superior conductivity, abundant active sites and the stable layered structure. However, the electrochemical performance of MXene-based electrodes is limited by the stacking of the nanosheets. Herein, the flexible carbon nanotube (CNT) modified Ti3C2 (CNT@Ti3C2-300) film was obtained via facile filtration of the MXene and CNT suspension mixture followed by annealing. The CNT could effectively pillar the interlayer space of the nanosheets to avoid the layeraggregation and create a cross-linked conductive network in the film. The hybrid film exhibits high capacitance of 366.7 F g-1 at a current density 1 A g-1, excellent rate performance up to 75.1% at 20 A g-1 and long cycling life (98.7 % capacitance retention after 8000 cycles at 20 A g-1). The above results indicate its huge potential application as flexible supercapacitors electrode. © 2022 SPIE.

关键词： Carbon nanotubes

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Polar vortex hidden in twisted bilayers of paraelectric SrTiO3

arXiv

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arXiv 2024年

作者： Sha, Haozhi Zhang, Yixuan Ma, Yunpeng Li, Wei Yang, Wenfeng Cui, Jizhe Li, Qian Huang, Houbing Yu, Rong School of Materials Science and Engineering Tsinghua University Beijing100084 China MOE Key Laboratory of Advanced Materials Tsinghua University Beijing100084 China State Key Laboratory of New Ceramics and Fine Processing Tsinghua University Beijing100084 China Advanced Research Institute of Multidisciplinary Science School of Materials Science and Engineering Beijing Institute of Technology Beijing100081 China

Polar topologies, such as vortex and skyrmion, have attracted significant interest due to their unique physical properties and promising applications in high-density memory devices. Currently, most polar vortices are observed in heterostructures containing ferroelectric materials and constrained by substrates. In this study, we unravel arrays of polar vortices formed in twisted freestanding bilayers composed of SrTiO3, a quantum-paraelectric material. Depth-resolved structures of the bilayers are measured with deep-sub-angstrom resolution and one picometer accuracy using multislice ptychography, enabling identification of the three-dimensional variations of polarization topology. Our findings reveal the evolution of the polar vortices in the twisted overlapping layers, demonstrating the reverse of rotation manner in the depth direction. Twisted freestanding bilayers provide a unique platform for exploration and modulation of novel polar topologies. © 2024, CC BY-NC-SA.

关键词： Topology

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Accurate Data-Driven Sliding Mode Parking Control for Autonomous Ground Vehicles with Efficient Trajectory Planning in Dynamic Industrial Scenarios

SSRN

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SSRN 2023年

作者： Jiang, Liquan Deng, Yuxuan Jiang, Zhihui He, Ruhan Yu, Hao Meng, Jie Xu, Weilin State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan430074 China State Key Laboratory of Maritime Technology and Safety Wuhan University of Technology Wuhan430063 China School of Computer Science Yangtze University Jingzhou434022 China School of Computer Science and Artificial Intelligence Wuhan Textile University Wuhan430074 China National Engineering Research Center for Water Transport Safety Wuhan University of Technology Wuhan430063 China

Autonomous Ground Vehicles (AGVs) can transfer or load and unload material in industrial scenarios due to their flexibility and operability, freeing people from tedious and repetitive labour. However, the dynamic scene and the system model uncertainty reduce the parking accuracy of AGVs in industrial scenes, which seriously affects the autonomous operation robustness and accuracy. This paper proposes a data-driven parking control-planning integration solution for AGVs in complex industrial scenes, which combines sliding mode parking control with trajectory planning based on iterative error compensation, allowing AGVs to park accurately and converge to the target parking site quickly. First, a data-driven discrete sliding mode controller is designed to iteratively reduce parking error, which is insensitive to disturbance during erratic iterative error compensation, ensuring the rapid and asymptotic convergence of the parking error in industrial scenarios. Then, to achieve efficient planning with the target parking site constantly being corrected, an improved Bi-RRT based trajectory planning scheme considering operational constraints and node expanding region division is proposed, which provides the trajectory that contributes to parking convergence for the proposed controller promptly. Finally, the efficiency of the proposed method is verified by real-world experiments with self-developed AGV in industrial scenes, and experimental results show that the proposed method achieves accurate parking control with efficient trajectory planning and rapid parking error convergence. © 2023, The Authors. All rights reserved.

关键词： Error compensation

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基于萘并噻吩二酰胺封端的三联受体的高性能n型有机半导体（英文）

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Science China materials 2025年

作者：张水鑫吴锃柳蒂赵岩陈少杰王洋刘云圻 Department of Materials Science State Key Laboratory of Molecular Engineering of Polymers Laboratory of Advanced Materials Fudan University School of New Energy Ningbo University of Technology Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences

n型有机半导体材料的开发对有机场效应晶体管（OFETs）的性能提升及其在p-n互补逻辑电路中的集成至关重要.深入理解这些材料的结构-性能关系对于其性能的进一步优化至关重要.本研究集中设计并合成了两种新型的n型三联受体,NTI-BTT和NTI-...

n型有机半导体材料的开发对有机场效应晶体管（OFETs）的性能提升及其在p-n互补逻辑电路中的集成至关重要.深入理解这些材料的结构-性能关系对于其性能的进一步优化至关重要.本研究集中设计并合成了两种新型的n型三联受体,NTI-BTT和NTI-BT,采用萘并噻吩二酰胺（naphtho[2,3-b]thiophene diimide,NTI）核心作为基础.我们的研究重点是探讨通过融合和/或间隔体插入实现的噻吩扩展对这些材料的物化和电荷输运特性的影响.值得注意的是,与基于萘二酰胺（NDI）的对比物相比,NTI封端的三联体表现出更强的电子吸引能力,其特点是更深的能级和更平面的骨架.然而,在基于NTI-BT的OFETs中,噻吩融合导致电子迁移率显著下降至0.004 cm2V-1s-1.这种差异可以归因于多晶结构,其中晶粒间的多个晶界增加了陷阱态密度,进而导致迁移率降低.对于NTI-BTT,在NTI和苯并噻二唑单元之间引入噻吩间隔体被发现可以有效增强n型电荷输运.此分子修饰提高了π-π相互作用并减小了分子间距离,导致π-π堆积距离短至3.45?.因此,NTI-BTT表现出显著提高的电子迁移率,为0.13 cm2V-1s-1,比基于NDI的对比物高出四倍.这些发现为n型有机半导体分子的设计做出了重要贡献,并为实现更高性能的OFETs提供了宝贵见解.

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