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Cover Feature: Iron as Recyclable Metal Fuel: Unraveling Oxidation Behavior and Cyclization Effects Through Thermogravimetric Analysis, Wide-Angle X-ray Scattering and Mössbauer Spectroscopy (ChemSusChem 15/2024)

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ChemSusChem 2024年第15期17卷

作者： Carola Kuhn Anna Knapp Max P. Deutschmann Jonas Spielmann Steffen Tischer Ulrike I. Kramm Hermann Nirschl Olaf Deutschmann Institute for Chemical Technology and Polymer Chemistry Karlsruhe Institute of Technology (KIT) Engesserstr.20 76131 Karlsruhe Germany Institute of Mechanical Process Engineering and Mechanics Karlsruhe Institute of Technology (KIT) Straße am Forum 8 76131 Karlsruhe Germany Eduard-Zintl-Insitute for Inorganic and Physical Chemistry Technical University Darmstadt Otto-Berndt-Str.3 64287 Darmstadt Germany Institute of Catalysis Research and Technology Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany

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Model-based identification of production tolerances in battery production 54

Model-based identification of production tolerances in batte...

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54th CIRP Conference on Manufacturing Ssystems, CMS 2021

作者： Thomitzek, Matthias Schmidt, Oke Abraham, Tim Cerdas, Felipe Röder, Fridolin Krewer, Ulrike Herrmann, Christoph Institute of Machine Tools and Production Technologies Department of Sustainable Manufacturing and Life Cycle Engineering Technische Universität Braunschweig Langer Kamp 19b Braunschweig38106 Germany Institute of Energy and Process Systems Engineering Technische Universität Braunschweig Franz-Liszt-Straße 35 Braunschweig38106 Germany Technische Universität Braunschweig Langer Kamp 19 Braunschweig38106 Germany Department of Electrical Energy Systems Universität Bayreuth Universitätsstraße 30 Bayreuth95447 Germany Karlsruhe Institute of Technology Adenauerring 20b Karlsruhe76131 Germany

Battery technology in combination with carbon-free energy presents a major paradigm shift for the future of the mobility and energy storage sector and already creates an immense demand for large scale battery factories. However, current battery production sites still report considerable scrap rates caused by insufficient process control and a lack of adequate production tolerances, which increase the cost and environmental impact of the battery cells. The present work introduces a methodology which assist in defining model-based production tolerances by considering the impact of varying process parameters on final cell properties in combination with production cost and cell revenue. © 2021 The Author(s).

关键词： Quality assurance

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Quasi-Continuous Concept for the Integrated Production and Separation of Crystals – From the Initial Idea to Industrial Scale

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Chemie Ingenieur Technik 2022年第9期94卷

作者： T. Dobler M. Gleiß H. Nirschl Karlsruhe Institute of Technology Institute of Mechanical Process Engineering and Mechanics Strasse am Forum 8 76131 Karlsruhe Germany

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Formulation and Characterization of Zinc Slurries for Zinc Slurry – Air Redox Flow Battery: A Rheological Approach

SSRN

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SSRN 2022年

作者： Milian, Diego Choi, Nak Heon Tsehaye, Misgina Tilahun Fischer, Peter Tübke, Jens Iojoiu, Cristina Roux, Denis C.D. Kissi, Nadia El Univ. Grenoble Alpes CNRS Grenoble INP LRP Grenoble38000 France Applied Electrochemistry Fraunhofer Institute for Chemical Technology ICT Joseph-vonFraunhofer Straße 7 Pfinztal76327 Germany Institute for Mechanical Process Engineering and Mechanics Karlsruhe Institute of Technology KIT Straße am Forum 8 Karlsruhe76131 Germany Univ. Grenoble Alpes Univ. Savoie Mont Blanc CNRS Grenoble INP LEPMI Grenoble38 000 France

This study presents rheometry as an optimization tool to increase discharge performance of a zinc slurry - air redox flow battery (RFB). Incorporation of electrode suspension slurry to metal-air batteries, in which dense metal solid microparticles are suspended in a conductive fluid with the aid of gelling agents, was investigated. Electrochemical performance of zinc anode slurries was characterized in a single redox flow battery cell in discharge mode. Rheological behavior of each of the slurries is investigated and the key parameters underlying the cell performance were determined. Combined rheological and electrochemical effects were examined and an optimal PAA concentration of 0.40 wt. % was found for the zinc slurry system, in which slurry stability is not compromised and conductivity is satisfactory. Furthermore, at the reported gelling agent optimal concentration, a maximum peak power density of 24 mW/cm 2 is obtained from polarization curves, improving previous reported performances using the same cell configuration by a factor of 2.4. These results bring more understanding in the development of slurry-based RFBs with a rheometric approach. © 2022, The Authors. All rights reserved.

关键词： Electrodes

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Electronic structure of ACu3Co4O12 (A = Y, La, Bi): Synthesis, characterization, core-level spectroscopies, high-pressure application, and ab initio calculation

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Physical Review Materials 2023年第7期7卷 073401-073401页

作者： Yuta Kato Meng-Jie Huang Keito Kasebayashi Takateru Kawakami Tatsuya Yamaguchi Jens Buck Ru-Pan Wang Matthias Kalläne Kai Rossnagel Peter Nagel Stefan Schuppler Yoshihiro Takahashi Takao Odake Shogo Kawaguchi Ikuya Yamada Atsushi Hariki Department of Materials Science Graduate School of Engineering Osaka Prefecture University 1-1 Gakuen-cho Nakaku Sakai Osaka 599-8531 Japan Deutsches Elektronen-Synchrotron DESY 22607 Hamburg Germany Department of Physics and Electronics Graduate School of Engineering Osaka Prefecture University 1-1 Gakuen-cho Nakaku Sakai Osaka 599-8531 Japan Department of Physics College of Humanities and Sciences Nihon University Setagaya Tokyo 156-8550 Japan Department of Physics and Electronics Graduate School of Engineering Osaka Metropolitan University 1-1 Gakuen-cho Nakaku Sakai Osaka 599-8531 Japan Institut für Experimentelle und Angewandte Physik Christian-Albrechts-Universität zu Kiel Germany Ruprecht Haensel Laboratory Kiel University and DESY Kiel 24098 Germany Department of Physics University of Hamburg 22761 Hamburg Germany Institute for Quantum Materials and Technologies (IQMT) Karlsruhe Institute of Technology (KIT) 76021 Karlsruhe Germany Karlsruhe Nano and Micro Facility (KNMFi) Karlsruhe Institute of Technology (KIT) 76344 Eggenstein-Leopoldshafen Germany Japan Synchrotron Radiation Research Institute (JASRI) 1-1-1 Kouto Sayo-cho Sayo-gun Hyogo 679-5198 Japan Department of Materials Science Graduate School of Engineering Osaka Metropolitan University 1-1 Gakuen-cho Nakaku Sakai Osaka 599-8531 Japan

We present a comprehensive experimental and computational study on A-site ordered perovskite oxides YCu3Co4O12, LaCu3Co4O12, and BiCu3Co4O12 including synthesis, transport, and magnetic characterization, high-pressure application, K- and L-edge x-ray absorption spectroscopy (XAS), Co 2p core-level x-ray photoemission spectroscopy and density-functional theory (DFT) calculations combined with dynamical mean-field theory (DMFT) and +U scheme. An insulating behavior with a valence state of A3+Cu3∼3+Co4∼3+O122− is found for the three compounds at ambient and high-pressure conditions (up to ∼55 GPa). A DFT calculation for YCu3Co4O12 uncovers the energetics of the Cu–O and Co–O bonding formation and crystal-field splitting, leading to a narrow-gap electronic structure with a hybrid orbital and element character near the Fermi energy. The stable low-spin configuration of the Co ion is studied in comparison to a canonical perovskite cobaltite LaCoO3. A DFT+DMFT analysis of the Cu spin-correlation function indicates that the Zhang-Rice singlet description for the CuO4 plaquette is valid, while a hybridization with the Co 3d orbitals also contributes to the Cu spin screening. The presence of the hybridization between the Co and Cu orbitals is shown by the DFT+DMFT analysis for the Co L2,3 XAS experimental spectra that exhibit unusual broad line shape. An increasing behavior of electrical resistance at elevated pressures is observed in all compounds and is interpreted based on a DFT+U simulation.

关键词： Electronic structure Metal-insulator transition Synthesis Cobaltates Cuprates Perovskites Strongly correlated systems Ab initio calculations Density functional theory Dynamical mean field theory X-ray absorption near-edge spectroscopy X-ray absorption spectroscopy

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The Data Provision Game: Researching Revenue Sharing in Collaborative Data Networks

The Data Provision Game: Researching Revenue Sharing in Coll...

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IEEE Conference on Commerce and Enterprise Computing, CEC

作者： Wolfgang Badewitz Simon Kloker Christof Weinhardt Information Process Engineering FZI Research Center for Information Technology Karlsruhe Germany Institute of Information Systems & Marketing KIT Karlsruhe Institute for Technology Karlsruhe Germany

ISBN: (数字)9781728199269

ISBN: (纸本)9781728199276

Data sharing between companies enables formerly unexploited potential for data-driven business applications. While it is clear how the owner of the business application will profit from the shared data, it is still in question how other stakeholders are incentivized to share data across company borders. We developed the data provision game based on a synthesized view of data value chains as a mathematical framework to analyze the economic interactions and incentives in a collaborative data network. We thereby emphasize revenue sharing as an important managing activity as everyone who contributes to a business application should profit from it in order to set right incentives. Further, we differentiate between entity-borne and network-borne activities. Finally, we formulated Shapley Pricing and Leave-One-Out Pricing as two options for revenue sharing mechanisms, which set incentives for welfare-optimal participation and data quality.

关键词： Biological system modeling Collaboration Data models Companies Economics Pricing

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Anisotropy dependence of chip formation and plastic deformation in Fe-25Cr-20Ni austenitic stainless steel during micro-scratching

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Tribology International 2025年 210卷

作者： Lv, Beibei Chen, Qinglong Li, Yunjie Wang, Fangyuan Zhang, Yulong Han, Jie Jiang, Zhengyi Xia, Wenzhen Institute of Microstructure and Micro/Nanomechanics School of Metallurgical Engineering Anhui University of Technology Maanshan243032 China State Key Laboratory of Digital Steel Northeastern University Liaoning Shenyang110819 China State Key Laboratory of Powder Metallurgy Central South University Changsha410083 China Research Institute of SD Steel Shandong Iron and Steel Co. Ltd. Shandong Jinan271104 China School of Mechanical Materials Mechatronic and Biomedical Engineering University of Wollongong WollongongNSW2522 Australia Anhui Engineering Research Center of Low-carbon Metallurgy and Process Control Anhui University of Technology Ma'anshan243002 China State Key Laboratory for Turbulence and Complex Systems Peking University Beijing100087 China

The wear characteristics of the tribological pair and the mechanisms of material removal are significantly influenced by the plastic deformation of the contact surface during the tribological process of metallic materials. Chip formation is recognized as one of the primary mechanisms contributing to material loss during the wear process. However, the underlying mechanisms governing chip formation remain incompletely elucidated. This paper employs micro-scratch testing to investigate the wear behavior of the {001}, {101}, and {111} grains in austenitic stainless steel under varying scratch directions and applied loads. The transition from initial indentation contact to plowing and subsequent chip formation is systematically examined, revealing the influence of crystallographic orientation and scratch direction on chip formation mechanisms. Our results demonstrate that the chip formation and plastic deformation exhibit substantial dependence on crystallographic orientation and scratch direction, which are closely associated with the activation of specific slip systems within the grains. The depth profile within the worn track and the surface topography surrounding it have a major impact on the frictional response and chip formation process. A critical depth for chip formation is identified under specific loading conditions, below which chip formation is more likely to occur. This research provides valuable insights into the micro-scale tribological behavior of face-centered cubic metallic materials, offering a theoretical foundation for optimizing material properties, enhancing wear resistance, and prolonging service life in engineering applications. © 2025 Elsevier Ltd

关键词： Austenitic stainless steel

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Enhancing the Reliability of Inp-Based Qd Color Conversion Layer Through a Uniform Organic Encapsulation Layer Via Inkjet Printing

SSRN

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SSRN 2024年

作者： Lee, Sang Youn Sakong, Chun Ju, Byeong-Kwon Cho, Kwan Hyun Autonomous Manufacturing & Process R&D Dept. Korea Institute of Industrial Technology Gyeong-gi-do Ansan-si15588 Korea Republic of Dept. of Micro/Nano Systems College of Engineering Korea University 145 Anam-ro Seongbuk-gu Seoul02841 Korea Republic of EM Development Team ChemE Inc. 199 Techno 2-ro Yuseong-gu Daejeon34025 Korea Republic of

Quantum dot (QD) as a color conversion layer (CCL) is gaining increasing attention for use in next generation displays. However, QD CCL, especially those based on indium phosphide (InP) materials, are vulnerable to oxygen and moisture. Accordingly, even in CCL technology, encapsulation is essential to mitigate performance reduction due to the degradation of color conversion efficiency (CCE). Herein, we employed only acrylic-based resin to produce a uniform encapsulation layer on a CCL, enhancing the CCE reliability of the QD CCL under ambient conditions. To print a uniform encapsulation layer, we confirmed the significance of the minimized surface energy differences on glass, bank, and QD film through O2 plasma treatment. We also investigated coating characteristics through adjustment of the drop spacing to analyze the reliability of the CCL. Compared to the CCL without an encapsulation layer, the CCE only showed a decrease of 1.96% at green 9and 3.6% at red light, after 168 hours. The T95 (time to 95% of the initial luminance) was improved from 5.25 hours to 75.02 hours by applying the encapsulation layer. As a result, we enhanced the stability of the InP-based QD CCL by printing only an organic encapsulation layer using the inkjet printing process. © 2024, The Authors. All rights reserved.

关键词： Conversion efficiency

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Temperature trends and elevation dependent warming during 1965-2014 in headwaters of Yangtze River, Qinghai Tibetan Plateau

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Journal of Mountain Science 2020年第3期17卷 556-571页

作者： Naveed AHMED WANG Gen-xu Adeyeri OLUWAFEMI Sarfraz MUNIR HU Zhao-yong Aamir SHAKOOR Muhammad Ali IMRAN Key Laboratory of Mountain Surface Process and Ecological Regulations Institute of Mountain Hazards and EnvironmentChinese Academy of SciencesChengdu 610041China University of Chinese Academy of Sciences Beijing 100049China Institute for Meteorology and Climate Research Atmospheric Environmental Research Karlsruhe Institute of TechnologyCampus Alpine82467Germany Water Resources Engineering University of Kurdistan Hewler 30 Meter Avenue ErbilKurdistan44001Iraq Department of Agricultural Engineering Bahauddin Zakariya UniversityMultan66000Pakistan Beijing Key Laboratory of Water Resources and Environmental Engineering China University of GeosciencesBeijing 100083China

The understanding of temperature trends in high elevation mountain areas is an integral part of climate change research and it is critical for assessing the impacts of climate change on water resources including glacier melt, degradation of soils, and active layer thickness. In this study, climate changes were analyzed based on trends in air temperature variables(Tmax, Tmin, Tmean), and Diurnal Temperature Range(DTR) as well as elevation-dependent warming at annual and seasonal scales in the Headwaters of Yangtze River(HWYZ), Qinghai Tibetan Plateau. The Base Period(1965-2014) was split into two subperiods;Period-Ⅰ(1965-1989) and Period-Ⅱ(1990-2014) and the analysis was constrained over two subbasins;Zhimenda and Tuotuohe. Increasing trends were found in absolute changes in temperature variables during Period-Ⅱ as compared to Period-Ⅰ.Tmax, Tmin, and Tmean had significant increasing trends for both sub-basins. The highest significant trends in annual time scale were observed in Tmin(1.15℃ decade-1) in Tuotuohe and 0.98℃ decade-1 in Zhimenda sub-basins. In Period-Ⅱ, only the winter season had the highest magnitudes of Tmax and Tmin0.58℃ decade-1 and 1.26℃ decade-1 in Tuotuohe subbasin, respectively. Elevation dependent warming analysis revealed that Tmax, Tmin and Tmean trend magnitudes increase with the increase of elevations in the middle reaches(4000 m to 4400 m) of the HWYZ during Period-Ⅱ annually. The increasing trend magnitude during Period-Ⅱ, for Tmax, is 1.77, 0.92, and 1.31℃ decade-1, for Tmin 1.20, 1.32 and 1.59℃ decade-1,for Tmean 1.51, 1.10 and 1.51℃ decade-1 at elevations of4066 m, 4175 m and 4415 m respectively in the winter season. Tmean increases during the spring season for> 3681 m elevations during Period-Ⅱ, with no particular relation with elevation dependency for other variables. During the summer season in Period Ⅱ, Tmax, Tmin, Tmean increases with the increase of elevations(3681 m to 4415 m) in the middle reaches of HWYZ. Elevation dependent wa

关键词： Climate change Elevation dependent warming Mann Kendall Temperature trends Yangtze River Qinghai Tibetan Plateau

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Design,modeling and experiments of broadband tristable galloping piezoelectric energy harvester

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Acta Mechanica Sinica 2020年第3期36卷 592-605页

作者： Junlei Wang Linfeng Geng Shengxi Zhou Zhien Zhang Zhihui Lai Daniil Yurchenko Engineering Research Center of Energy Saving Technology and Equipment of Thermal Energy System Ministry of EducationZhengzhou 450000China School of Aeronautics Northwestern Polytechnical UniversityXi'an 710072China William G.Lowrie Department of Chemical and Biomolecular Engineering The Ohio State UniversityColumbusOH 43210USA Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering College of Mechatronics and Control EngineeringShenzhen UniversityShenzhen 518060China Institute of Mechanical Process&Energy EngineeringHeriot-Watt UniversityEdinburgh EH 144ASUK

Galloping based piezoelectric energy harvester is a kind of micro-environmental energy harvesting device based on flowinduced vibrations.A novel tristable galloping-based piezoelectric energy harvester is constructed by introducing a nonlinear magnetic force on the traditional galloping-based piezoelectric energy *** on Euler-Bernoulli beam theory and Kirchhoff’s law,the corresponding aero-electromechanical model is proposed and validated by a series of wind tunnel *** parametric study is performed to analyse the response of the tristable galloping-based piezoelectric energy *** results show that comparing with the galloping-based piezoelectric energy harvester,the mechanism of the tristable galloping-based piezoelectric energy harvester is more *** the increase of a wind speed,the vibration of the bluff body passes through three branches:intra-well oscillations,chaotic oscillations,and inter-well *** threshold wind speed of the presented harvester for efficiently harvesting energy is 1.0 m/s,which is decreased by 33% compared with the galloping-based piezoelectric energy *** maximum output power of the presented harvester is 0.73 mW at 7.0 m/s wind speed,which is increased by 35.3%.Compared with the traditional galloping-based piezoelectric energy harvester,the presented tristable galloping-based piezoelectric energy harvester has a better energy harvesting performance from flow-induced vibrations.

关键词： Energy harvesting Galloping Tristable Flow induced vibrations

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