检索结果-内蒙古大学图书馆

SSRN 2023年

作者： Lin, Zong-Hong Huang, Ming-Zheng Parashar, Parag Chen, An-Rong Shi, Shih-Chen Tseng, Yao-Hsuan Lim, Kee Chin Yeh, Hsuan-Yu Pal, Arnab Institute of Biomedical Engineering National Tsing Hua University Hsinchu30013 Taiwan Department of Biomedical Engineering National Taiwan University Taipei10617 Taiwan Department of Chemical Engineering National Taiwan University Taipei10617 Taiwan Department of Materials Science and Engineering National Tsing Hua University Hsinchu30013 Taiwan Department of Mechanical Engineering National Cheng Kung University Tainan70101 Taiwan International Intercollegiate Ph.D. Program National Tsing Hua University Hsinchu30013 Taiwan

Extreme frictional wear of triboelectric layers severely hinders long-term sustainability of triboelectric nanogenerators (TENGs) for efficient ambient energy harvesting. The state-of-the-art solutions necessitate sophisticated structural designs and complex packaging constraints, impeding the feasibility of TENGs for practical applications. Herein, inspired by the structures and compositions of snake scales, a biomimetic composite (BC) film is fabricated as a wear-resistant triboelectric contact layer. The successful formation of disulfide bond-facilitated cross-linkage of cysteine proteins in the keratin-based BC film promotes excellent mechanical resilience and durability, thereby solving the material abrasion challenges associated with solid-solid triboelectric layers. The BC film, with toothed microstructure, exhibits improved charge transfer, low friction, and consistent long-term stable outputs compared to commercial films. Furthermore, a self-powered BC film-based TENG is integrated into a bicycle for biomechanical energy harvesting, lightening warning signals for safer night ride with stable 300 V electrical output for at least 6 hours. Moreover, a smart health monitoring system is further proposed by embedding TENG-based sensors into the bicycle saddle, accurately capturing the rider’s pelvic-saddle interactions on varying terrain slopes. By leveraging the unique biomechanical information, machine learning-assisted user identification and terrain slope data classifications are achieved with high accuracies, laying a foundation for futuristic smart healthcare applications. This work provides a strategy to reduce material abrasion by exploiting the unique characteristics of a biomimetic material, facilitating a basis for efficient environmental energy harvesting and smart sensing. © 2023, The Authors. All rights reserved.

关键词： Nanogenerators

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Efficient Access to Inverse Bicontinuous Mesophases via Polymerization-Induced Cooperative Assembly

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CCS Chemistry 2021年第8期3卷 2214-2225页

作者： Fei Lv Zesheng An Peiyi Wu State Key Laboratory of Supramolecular Structure and Materials College of ChemistryKey Laboratory for Molecular Enzymology and Engineering of Ministry of EducationSchool of Life SciencesJilin UniversityChangchun 130012 State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular ScienceLaboratory of Advanced MaterialsFudan UniversityShanghai 200433 State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of ChemistryChemical Engineering and BiotechnologyCenter for Advanced Low-Dimension MaterialsDonghua UniversityShanghai 201620

Polymerization-induced cooperative assembly(PICA)is reported to efficiently access inverse bicontinuous mesophases within particles consisting of amphiphilic block copolymers(BCPs)and solvophobic *** addition-fragmentation chain transfer(RAFT)dispersion alternating copolymerization of styrene and pentafluorostyrene is conducted in 2%v/v toluene/ethanol by simultaneously using poly(N,N-dimethylacrylamide)(PDMA29)as a macromolecular chain transfer agent(macro-CTA)and small molecule CTA.

关键词： block copolymers bicontinuous mesophases cubosomes hexasomes polymerizationinduced self-assembly polymerization-induced cooperative assembly reversible additionfragmentation chain transfer

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Charge transport modulation by a redox supramolecular spin-filtering chiral crystal

arXiv

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arXiv 2023年

作者： Verhage, Michael Bampoulis, Pantelis Preuss, Marco D. Filot, Ivo Friedrich, Heiner Joosten, Rick R.M. Meijer, E.W. Flipse, Kees Molecular Materials and Nanosystems Department of Applied Physics Eindhoven University of Technology Netherlands Faculty of Science and Technology Physics of Interfaces and Nanomaterials University of Twente Netherlands Eindhoven University of Technology PO Box 513 Eindhoven5600 MB Netherlands Laboratory of Macromolecular and Organic Chemistry Eindhoven University of Technology Netherlands Inorganic Materials & Catalysis Department of Chemical Engineering and Chemistry Eindhoven University of Technology Netherlands Laboratory of Physical Chemistry Department of Chemical Engineering Eindhoven University of Technology Eindhoven5600 MB Netherlands Center for Multiscale Electron Microscopy Department of Chemical Engineering Eindhoven University of Technology Eindhoven5600 MB Netherlands

The chirality induced spin selectivity (CISS) effect is a fascinating phenomena correlating molecular structure with electron spin-polarisation in excited state measurements. Experimental procedures to quantify the spin-filtering magnitude relies generally on averaging data sets, especially those from magnetic field dependent conductive-AFM. We investigate the underlying observed disorder in the IV spectra and the origin of spikes superimposed. We demonstrate and explain that a dynamic, voltage sweep rate dependent, phenomena can give rise to complex IV curves for chiral crystals of coronene bisimide. The redox group, able to capture localized charge states, acts as an "impurity" state interfering with a continuum, giving rise to Fano resonances. We introduce a novel mechanism for the dynamic transport which might also provide insight into the role of spin-polarization. Crucially, interference between charge localisation and delocalisation during transport may be important properties into understanding the CISS phenomena. © 2023, CC BY.

关键词： Magnetic moments

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Low-temperature sintering of Li0.33La0.55TiO3 electrolyte for all-solid-state Li batteries

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Journal of the European Ceramic Society 2023年第16期43卷 7543-7552页

作者： Lin, Che-an Ihrig, Martin Kung, Kuan-chen Chen, Hsiang-ching Scheld, Walter Sebastian Ye, Ruijie Finsterbusch, Martin Guillon, Olivier Lin, Shih-kang Department of Materials Science and Engineering National Cheng Kung University Tainan70101 Taiwan Institute of Energy and Climate Research – Materials Synthesis and Processing Forschungszentrum Jülich GmbH Jülich52425 Germany Department of Chemical Engineering National Taiwan University of Science and Technology No. 43 Keelung Rd. Section 4 Da'an Dist Taipei City106 Taiwan Helmholtz Institute Münster: Ionics in Energy Storage Corrensstr. 46 Münster48149 Germany Research Center National Cheng Kung University Tainan70101 Taiwan Program on Smart and Sustainable Manufacturing Academy of Innovative Semiconductor and Sustainable Manufacturing National Cheng Kung University Tainan70101 Taiwan Core Facility Center National Cheng Kung University Tainan70101 Taiwan

Ceramic solid-state Li batteries have promising electrochemical properties. However, their device integration is hampered by the required high sintering temperature step to obtain good ionic conductivity. The sintering temperature often leads to thermal decomposition of the cathode active material. Advanced sintering techniques, such as field-assisted sintering technology/spark plasma sintering (FAST/SPS), utilizing applied mechanical pressure to achieve a lower sintering temperature and shorter dwell time, are helpful in overcoming thermal stability challenges. While thermal stability issues are overcome by a lower sintering temperature, new challenges in the form of surface impurities arise. Low-temperature sintering does not thermally decompose surface impurities which causes low grain boundary conductivity and thus low total ionic conductivity. In this work, a cleaning method and a low-temperature sintering process is exemplarily developed for Li0.33La0.55TiO3 (LLTO) and the impact of applied mechanical pressure during FAST/SPS on the total ionic conductivity and the phase stability of LLTO is revealed. © 2023 Elsevier Ltd

关键词： Spark plasma sintering

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Anion-Deficient Transition Metal Oxynitrides as Anode Materials for Solid Oxide Fuel Cells

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Chemistry - A European Journal 2025年第26期31卷 e202500503页

作者： Zhang, Shi-Rui Wang, Xiao-Ming Li, Wen Fang, Lei-Ming Liu, Tian-Hui Yang, Zu-Pei Kuang, Xiao-Jun Jiao, Huan Department of Key Laboratory of Macromolecular Science of Shaanxi Province Shaanxi Key Laboratory for Advanced Energy Devices Shaanxi Engineering Laboratory for Advanced Energy Technology School of Chemistry & Chemical Engineering Shaanxi Normal University Shaanxi Province Xi'an710062 China Institute of Nuclear Physics and Chemistry China Academy of Engineering Physics Sichuan Mianyang621900 China Advanced Materials Research Group Faculty of Engineering The University of Nottingham University Park NottinghamNG7 2RD United Kingdom Industrial Training Centre Shenzhen Polytechnic University Guangdong Province Shenzhen518055 China School of Materials Science and Engineering Shaanxi Normal University Shaanxi Xi'an710062 China Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials College of Chemistry and Bioengineering Guilin University of Technology Guilin541004 China

Transition metal oxynitrides, with their unique electronic structures and excellent conductivity, hold significant promise as anode materials in fuel cells. In this study, we synthesized and characterized two novel anion-deficient transition metal oxynitrides: Ca4La8V4O8N12 and Sr3La9V4O7N13. Their crystal structures were determined via Rietveld refinement of X-ray and neutron diffraction data, revealing a higher concentration of anion vacancies in Sr3La9V4O7N13. As a result, Sr3La9V4O7N13 exhibits significantly enhanced electrical conductivity compared to Ca4La8V4O8N12. Density functional theory (DFT) calculations indicate that Sr3La9V4O7N13 possesses higher defect formation energies, influencing its band structure and facilitating electron transitions, thereby enhancing conductivity. This study underscores the role of anion deficiencies in modulating the electronic properties of transition metal oxynitrides and offers new insights for designing high-performance anode materials for solid oxide fuel cells (SOFCs). © 2025 Wiley-VCH GmbH.

关键词： Rietveld refinement

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BEAST DB: Grand-Canonical Database of Electrocatalyst Properties

arXiv

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arXiv 2024年

作者： Tezak, Cooper Clary, Jacob Gerits, Sophie Quinton, Joshua Rich, Benjamin Singstock, Nicholas Alherz, Abdulaziz Aubry, Taylor Clark, Struan Hurst, Rachel Ben, Mauro Del Sutton, Christopher Sundararaman, Ravishankar Musgrave, Charles Vigil-Fowler, Derek Department of Chemical and Biological Engineering University of Colorado Boulder BoulderCO80309 United States Materials Chemical and Computational Science Directorate National Renewable Energy Laboratory GoldenCO80401 United States Department of Physics Applied Physics and Astronomy Rensselaer Polytechnic Institute TroyNY12180 United States Department of Chemistry University of Colorado Boulder BoulderCO80309 United States Department of Mechanical Engineering University of Colorado Boulder BoulderCO80309 United States Department of Chemical Engineering College of Engineering and Petroleum Kuwait University Safat13060 Kuwait Applied Mathematics & Computational Research Division Lawrence Berkeley National Laboratory BerkeleyCA94720 United States Department of Chemistry and Biochemistry University of South Carolina ColumbiaSC29208 United States Department of Materials Science and Engineering Rensselaer Polytechnic Institute TroyNY12180 United States Materials Science and Engineering Program University of Colorado Boulder BoulderCO80309 United States Renewable and Sustainable Energy Institute University of Colorado Boulder BoulderCO80309 United States Department of Chemical Engineering University of Utah Salt Lake CityUT84112 United States

We present BEAST DB, an open-source database comprised of ab initio electrochemical data computed using grand-canonical density functional theory in implicit solvent at consistent calculation parameters. The database contains over 20,000 surface calculations and covers a broad set of heterogenous catalyst materials and electrochemical reactions. Calculations were performed at self-consistent fixed potential as well as constant charge to facilitate comparisons to the computational hydrogen electrode. This article presents common use cases of the database to rationalize trends in catalyst activity, screen catalyst material spaces, understand elementary mechanistic steps, analyze electronic structure, and train machine learning models to predict higher fidelity properties. Users can interact graphically with the database by querying for individual calculations to gain granular understanding of reaction steps or by querying for an entire reaction pathway on a given material using an interactive reaction pathway tool. BEAST DB will be periodically updated, with planned future updates to include advanced electronic structure data, surface speciation studies, and greater reaction coverage. Copyright © 2024, The Authors. All rights reserved.

关键词： Database systems

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Enhancing Zinc Electrode Stability Through Pre-Desolvation and Accelerated Charge Transfer Via a Polyimide Interface

SSRN

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SSRN 2023年

作者： Lai, Chi-Yu Liao, Yin-Song Ku, Hao-Yu Jao, Wen-Yang Gull, Sanna Chen, Han-Yi Chou, Jyh-Pin Hu, Chi-Chang Department of Chemical Engineering National Tsing Hua University Hsinchu300044 Taiwan Tsing Hua Interdisciplinary Program National Tsing Hua University Hsinchu300044 Taiwan Department of Materials Science and Engineering National Tsing Hua University Hsinchu300044 Taiwan Department of Physics National Changhua University of Education Changhua50074 Taiwan

Aqueous zinc-based energy storage devices possess superior safety, cost-effectiveness, and high energy density;however, dendritic growth and side reactions on the zinc electrode curtail their widespread applications. In this study, we mitigate these issues by introducing a polyimide (PI) nanofabric interfacial layer onto the zinc substrate. Simulations reveal that the PI nanofabric promotes a pre-desolvation process, effectively desolvating hydrated zinc ions from Zn(H2O)62+ to Zn(H2O)42+ before approaching zinc surface. The exposed zinc ion in Zn(H2O)42+ provides an accelerated charge transfer process and reduces the activation energy for zinc deposition from 40 to 21 kJ mol−1. The PI nanofabric also acts as a protective barrier, reducing water molecule interactions and side reactions at the electrode. The PI-Zn symmetric cell exhibits remarkable cycling stability over 1200 h, maintaining a dendrite-free morphology and minimal byproduct formation. Moreover, the cell exhibits high stability and low voltage hysteresis even under high current densities (20 mA cm−2, 10 mAh cm−2) thanks to the three-dimensional porous structure of PI nanofabric. When integrated into full cells, the PI-Zn||AC hybrid zinc-ion capacitor and PI-Zn||MnVOH@SWCNT zinc-ion battery achieve impressive lifespans of 15000 and 600 cycles with outstanding capacitance retention. This approach paves a novel avenue for high-performance zinc metal electrodes. © 2023, The Authors. All rights reserved.

关键词： Charge transfer

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Modeling insights to navigate limitations in bipolar membranes

Nature Chemical Engineering

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Nature chemical engineering 2024年 1-2页

作者： David Kitto Jovan Kamcev Department of Chemical Engineering University of Michigan Ann Arbor MI USA Macromolecular Science and Engineering University of Michigan Ann Arbor MI USA

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Unlocking Green Potential: Enhancing Biomass Valorization Via Thermal Depolymerization With Spent Catalysts

SSRN

引用

SSRN 2023年

作者： Damayanti, Damayanti Wulandari, Yeni Ria Marpaung, David Septian Supriyadi, Didik Yohana, Dian Tessa Saputri, Desi Riana Sanjaya, Andri Fahni, Yunita Taharuddin, Taharuddin Wu, Ho Shing Department of Chemical Engineering Institut Teknologi Sumatera Jl. Terusan Ryacudu Way Huwi Kec. Jati Agung Lampung Selatan 35365 Indonesia Department of Chemical Engineering and Materials Science Yuan Ze University 135 Yuan Tung Road Chung Li Taoyuan320315 Taiwan Study Program of Industrial Chemical Engineering Technology Lampung State Polytechnic Indonesia Department of Biosystems Engineering Institut Teknologi Sumatera Jl. Terusan Ryacudu Way Huwi Kec. Jati Agung Lampung Selatan 35365 Indonesia Institut Teknologi Sumatera Indonesia

Biomass is globally recognized as an up-and-coming environmentally friendly carbon-based energy source, Suitable catalysts for managing thermal depolymerization of biomass present an alternative method for reducing overall energy usage while maintaining the *** spent catalyst could increase bio-organics production by up to 11%,31%,6%,and 21% in rice straw,brown solid,alkaline, and dealkaline lignin pyrolysis, respectively. The amount of biochar produced in the thermal depolymerization was reduced to 18%,27%,35%,and 32% in rice straw, brown solid, alkaline, and dealkaline pyrolysis, respectively, upon utilizing the spent catalyst. These findings indicate the potential of the spent catalyst for the biomass thermal depolymerization process. © 2023, The Authors. All rights reserved.

关键词： Lignin

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Evaluation of the Potential of Araucaria angustifolia Seeds as Source of Oligosaccharides, Resistant Starch and Growth of Probiotic Bacteria

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Food and Nutrition sciences 2024年第10期15卷 921-940页

作者： Rossana Catie Bueno de Godoy Celia Lúcia de Luces Fortes Ferreira Jaqueline Moura Nadolny Haíssa Roberta Cardarelli Fernanda Pereira Santos Magali Leonel Embrapa Forestry Colombo Brazil Department of Food Technology Federal University of Viosa (UFV) Viosa Brazil School of Chemical Engineering The University of Queensland (UQ) Brisbane Australia Department of Food Technology Center for Technology and Regional Development Federal University of Paraiba Joo Pessoa Brazil Postgraduation Program in Food Science and Technology Department of Food Engineering Technology Center Federal University of Paraiba Joo Pessoa Brazil Tropical Roots and Starches Center Paulista State University (UNESP) Botucatu Brazil

“Pinhão”, the seed of Araucaria angustifolia, is an important food, being part of the eating habits of Indigenous communities. In this study, we evaluated the oligosaccharide content, resistant starch and the growth of probiotic bacteria. GF4 (1-fructofuranosylnystose) was the main fructo-oligosaccharides found, in higher contents compared to other food sources. Maltooligosaccharides (MOS) represented the main part of the oligosaccharides profile of Brazilian pine seeds. In descending order of importance was maltoheptaose (G7), maltohexose (G6) and maltotriose (G3). The starches from the variety Sanct josephi presented the highest amount of resistant starch that could stimulate probiotic strains, mainly B. breve and L. plantarum, and may have a prebiotic effect, potentially promoting health benefits. This study advances the understanding of the chemical composition of the main portion of the “pinhão” enhancing awareness of its potential as a healthy food source, contributing to different uses and indirectly with the species preservation.

关键词： Maltooligosaccharides Fructooligosaccharides Resistant Starch B. breve L. plantarum

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