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Recent Progress in Improving Rate Performance of Cellulose-Derived Carbon materials for Sodium-Ion Batteries

Nano-Micro Letters 2024年第8期16卷 102-147页

作者： Fujuan Wang Tianyun Zhang Tian Zhang Tianqi He Fen Ran State Key Laboratory of Advanced Processing and Recycling of Non‑Ferrous Metals Lanzhou University of TechnologyLanzhou 730050People’s Republic of China School of Materials Science and Engineering Lanzhou University of TechnologyLanzhou 730050People’s Republic of China School of Mechanical and Electronical Engineering Lanzhou University of TechnologyLanzhou 730050People’s Republic of China

Cellulose-derived carbon is regarded as one of the most promising candidates for high-performance anode materials in sodium-ion batteries;however,its poor rate performance at higher current density remains a challenge to achieve high power density sodium-ion *** present review comprehensively elucidates the structural characteristics of cellulose-based materials and cellulose-derived carbon materials,explores the limitations in enhancing rate performance arising from ion diffusion and electronic transfer at the level of cellulose-derived carbon materials,and proposes corresponding strategies to improve rate performance targeted at various precursors of cellulose-based *** review also presents an update on recent progress in cellulose-based materials and cellulose-derived carbon materials,with particular focuses on their molecular,crystalline,and aggregation ***,the relationship between storage sodium and rate performance the carbon materials is elucidated through theoretical calculations and characterization ***,future perspectives regarding challenges and opportunities in the research field of cellulose-derived carbon anodes are briefly highlighted.

关键词： Cellulose Hard carbon Anode materials Rate performance Sodium-ion batteries

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Low-temperature superplasticity of β-stabilized Ti-43Al-9V-Y alloy sheet with bimodalγ-grain-size distribution

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Journal of materials science & Technology 2021年第36期95卷 225-236页

作者： Yu Zhang Shuai Chang Yuyong Chen Yuchao Bai Cuiling Zhao Xiaopeng Wang Jun Min Xue Hao Wang Department of Mechanical Engineering Faculty of EngineeringNational University of Singapore9 Engineering Drive 1Singapore 117575Singapore Department of Materials Science and Engineering Faculty of EngineeringNational University of Singapore9 Engineering Drive 1Singapore 117576Singapore State Key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyHarbin 150001China National Key Laboratory for Precision Hot Processing of Metals Harbin Institute of TechnologyHarbin 150001China

The superplasticity of Ti-43Al-9V-0.2Y alloy sheet hot-rolled at 1100℃was systematically investigated in the temperature range of 750-900℃under an initial strain rate of 10^(-4)s^(-1).A bimodalγgraindistribution microstructure of Ti Al alloy sheet,with abundant nano-scale or sub-micronγlaths embedded insideβmatrix,exhibits an impressive superplastic *** inhomogeneous microstructure shows low-temperature superplasticity with a strain-rate sensitivity exponent of m=0.27 at 800℃,which is the lowest temperature of superplastic deformation for Ti Al alloys attained so *** maximum elongation reaches~360%at 900℃with an initial strain rate of 2.0×10^(-4)s^(-1).To elucidate the softening mechanism of the disorderedβphase during superplastic deformation,the changes of phase composition were investigated up to 1000℃using in situ high-temperature X-ray diffraction(XRD)in this *** results indicate thatβphase does not undergo the transformation from an ordered L2;structure to a disordered A2 structure and cannot coordinate superplastic deformation as a *** on the microstructural evolution and occurrence of bothγandβdynamic recrystallization(DR)after tensile tests as characterized with electron backscatter diffraction(EBSD),the superplastic deformation mechanism can be explained by the combination of DR and grain boundary slipping(GBS).In the early stage of superplastic deformation,DR is an important coordination mechanism as associated with the reduced cavitation and dislocation density with increasing tensile *** DR can relieve stress concentration arising from dislocation piling-up at grain boundaries through the fragmentation from the original coarse structures into the fine equiaxed ones due to recrystallization,which further effectively suppresses apparent grain growth during superplastic *** the late stage of superplastic deformation,these equiaxed grains make GBS prevalent,which can effectively avoid intergranu

关键词： Titanium aluminides Hot-rolled alloy sheet Bimodal microstructure In situ high-temperature XRD Superplasticity

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Oxygen-deficient TiO_(2) Yolk-shell Spheres for Enhanced Lithium Storage Properties

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Energy & Environmental materials 2022年第1期5卷 238-244页

作者： Zhaoqian Li Yuqi Peng Chaofeng Liu Xianxi Zhang Xiuling Li Yang Huang Yingke Ren Denghui Ji Guozhong Cao Key Laboratory of Photovoltaic and Energy Conservation Materials CASInstitute of Solid State PhysicsHefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China College of Science Hebei University of Science and TechnologyShijiazhuang 050018China Shandong Provincial Key Laboratory/Collaborative Innovation Center of Chemical Energy Storage&Novel Cell Technology School of Chemistry and Chemical EngineeringLiaocheng UniversityLiaocheng 252000China Department of Materials Science and Engineering University of WashingtonSeattle WA 98195USA College of Physics Mechanical and Electronical CollegeShijiazhuang UniversityShijiazhuang City 050035P.R.China College of Physics and Information Engineering Hebei Advanced Thin Films LaboratoryHebei Normal UniversityShijiazhuang City 050024P.R.China

Anatase TiO_(2) is a promising anode material for lithium-ion batteries(LIBs)owing to its low cost and ***,the intrinsically kinetic limits seriously hindered its lithium-ion storage *** we present that anatase TiO_(2) with rich oxygen vacancies can enhance its lithium-ion storage *** synthesize anatase TiO_(2) with well-retained hierarchical structure by annealing the H_(2)Ti_(5)O_(11)·3H_(2)O yolk-shell spheres precursor in nitrogen *** and XPS data evidence that the oxygen-deficient environment could generate abundant oxygen vacancies in the as-derived anatase TiO_(2),which leads to improved electron conductivity and reduced charge-transfer *** rich oxygen vacancies and high structural integrity of the hierarchical yolk-shell spheres enable the as-derived anatase TiO_(2) yolk-shell spheres with a high specific capacity of 280 mAh g^(-1) at 100 mA g^(-1) and 71%of capacity retention after 5000 cycles at 2 A g^(-1).

关键词： anatase TiO_(2) lithium-ion batteries oxygen vacancies yolk-shell spheres

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Arduino-based Smart Flowmeter System with Frequency-to-Flowrate Mechanism

Arduino-based Smart Flowmeter System with Frequency-to-Flowr...

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Conference on Artificial Intelligence and Robotics and Asia-Pacific International Symposium

作者： Seyed Sadra Razavi Amirhosein Mansouri Amin Feyz Bashipour Department of Mechanical Automotive and Materials Engineering University of Windsor Toronto Canada Renewable Energy Engineering Department Shahid Beheshti University Tehran Iran School of Automotive Engineering Iran University of Science and Technology Toronto Canada

Flow measurement is one of the important requirements in various industries, and this method directly affects the quality and performance efficiency of the system. If mechanisms with better efficiency and higher accuracy are introduced, the security of industries such as energy improves. In this paper, the performance of an industrial flowmeter is improved based on programming techniques, and its structure is described.

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Fabrication and Effect of Gamma (γ) Radiation on Degradable Biocomposite Films Incorporated with Medicinal Plants

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materials Circular Economy 2024年第1期6卷 1-14页

作者： Parveen, Israt Mahmud, Md. Iqbal Das, Subrata C. Khan, Ruhul A. Cho, Haeng M. Institute for Frontier Materials Deakin University VIC Australia Department of Textile Engineering Mawlana Bhashani Science and Technology University Tangail Bangladesh Institute of Radiation and Polymer Technology Atomic Energy Research Establishment Bangladesh Atomic Energy Commission Savar Bangladesh Department of Mechanical Engineering Mawlana Bhashani Science and Technology University Tangail Bangladesh Department of Manufacturing and Civil Engineering Norwegian University of Science and Technology Gjøvik Norway Department of Mechanical Engineering Kongju National University Gongju South Korea

In this work, degradable biocomposite films were developed from sodium alginate (SA) biopolymer and the leaves of two naturally available medicinal plants, i.e., neem (Azadirachta indica) and aloe vera (Aloe barbadensis Miller), for biomedical application purposes. The solvent-casting method was used to fabricate the films, and 1 wt% of the medicinal plant leaf extract was employed during the film casting. Various characterization was performed to assess the performances of the developed biocomposite films, such as tensile testing, moisture content, FTIR (Fourier transform infrared) spectroscopy, TGA (thermogravimetric analysis), SEM (scanning electron microscopy), and biodegradation (in soil medium) testing. Furthermore, gamma (γ) radiation of 6.0 kGy dose was applied to boost up the performance of the studied films. A positive response in the physico-mechanical properties was exhibited as a function of γ-ray exposure in the biocomposite films. The studied films exhibited high transparency and have the potential to be applied as useful material for biomedical applications such as wound dressing, and antimicrobial bandages.

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Aerosol Deposition of Alumina Coatings on Patterned Si Substrates

SSRN

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SSRN 2023年

作者： Yang, Zhenying Namaki, Hafez Dolatabadi, Ali Coyle, Thomas W. Department of Materials Science and Engineering University of Toronto TorontoON Canada Department of Mechanical Industrial and Aerospace Engineering Concordia University MontrealQC Canada Department of Mechanical and Industrial Engineering University of Toronto TorontoON Canada

Fabricating dense ceramic layers without cracks is challenging, especially on structured surfaces and under low process temperatures. Aerosol deposition (AD) is a promising technique for producing dense ceramic coatings at room temperature. Film formation on smooth and flat substrates by AD has been explored in the field, but deposition on non-flat patterned surfaces has not been reported yet. In this work, we describe dense alumina coatings deposited without delamination on flat and micro-patterned silicon substrates using AD. We demonstrate that the pre-patterned substrates can reduce or eliminate the formation of horizontal micro-cracks in the coatings. The deposited layers cover the substrate patterns completely and give uniform coating surfaces, which opens the way for AD in applications such as 3D micro-energy devices. © 2023, The Authors. All rights reserved.

关键词： Alumina

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Broadband Spurious Mitigation of LLSAW Devices on Rotated Y-Cut LiNbO3/SiO2/SiC

Broadband Spurious Mitigation of LLSAW Devices on Rotated Y-...

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IEEE International Symposium on Applications of Ferroelectrics (ISAF)

作者： Peisen Liu Sulei Fu Huiping Xu Boyuan Xiao Qiufeng Xu Xinchen Zhou Shuai Zhang Qiaozhen Zhang Rui Wang Cheng Song Fei Zeng Weibiao Wang Feng Pan Key Laboratory of Advanced Materials (MOE) School of Materials Science and Engineering Tsinghua University Beijing China Shoulder Electronics Limited Wuxi China College of Information Mechanical and Electrical Engineering Shanghai Normal University Shanghai China

ISBN: (数字)9798350371901

ISBN: (纸本)9798350371918

This paper reports on the demonstration of high-frequency and spurious-free longitudinal leaky surface acoustic wave (LLSAW) filters utilizing a 170° Y-90° X LiNbO3/SiO2/SiC heterostructure. The efficient spurious suppression in a wide frequency range is attained through optimizing LiNbO3 cut orientation, propagation angles and electrode thickness, specifically employing 170° Y-90° X LiNbO3 on a typical piezo-on-insulator platform. The implemented resonators and filter on 170° Y-90° X LiNbO3(250 nm)/SiO2(200 nm)/SiC stack demonstrate excellent spurious-free responses, with excellent out-of-band rejection across 1-8 GHz and a low insertion loss of 2.6 dB in transmit band, highlighting its potential to address band co-existence issues in advanced 5G or Wi-Fi 6/6E applications.

关键词： Electrodes 5G mobile communication Lithium niobate Prevention and mitigation Surface acoustic waves Resonator filters Resonant frequency Propagation losses Resonators Wireless fidelity

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Additive manufacturing of nickel-based superalloys: A state-of-the-art review on process-structure-defect-property relationship

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Progress in materials science 2023年 136卷

作者： Mostafaei, Amir Ghiaasiaan, Reza Ho, I-Ting Strayer, Seth Chang, Kai-Chun Shamsaei, Nima Shao, Shuai Paul, Santanu Yeh, An-Chou Tin, Sammy To, Albert C. Department of Mechanical Materials and Aerospace Engineering Illinois Institute of Technology 10 W 32nd Street ChicagoIL60616 United States Department of Mechanical Engineering Auburn University AuburnAL36849 United States Auburn University AuburnAL36849 United States Department of Mechanical Engineering and Materials Science University of Pittsburgh Pittsburgh15261 United States Materials Science and Engineering Department National Tsing Hua University 101 Sec. 2 Kuang-Fu Road Hsinchu30013 Taiwan Department of Materials Science and Engineering University of Arizona TucsonAZ85721 United States

Fusion-based additive manufacturing (AM) has significantly grown to fabricate Nickel-based superalloys with design freedom across multiple length scales. Several phenomena such as feedstock/energy source/melt pool interactions, solidification and phase transformations occur during fusion-based AM processes of Nickel-based superalloys, which determine the ultimate microstructure and mechanical performance of the built parts. In this review, we elaborate a comprehensive discussion on AM Nickel-based superalloys and influential factors including feedstock characteristics (powder morphology, chemistry, contamination, flowability, recycling) and AM processing (parameters, and powder spreading/wall/balling/spattering effects) on their microstructure (micro-segregation, phases formations and grain structures), defect generation (sub-surface/internal defects, microcracks, surface roughness, and residual stress). Furthermore, the mechanical properties of AM Nickel-based superalloys such as tensile, creep and fatigue at room/elevated temperatures are analyzed in accordance with the initial, and post processing effects. Additionally, the commonly utilized modeling approaches in literature to predict the microstructure and mechanical behavior of these alloys are highlighted. Finally, the current challenges and mitigation approaches for future research are identified considering the gaps in the AM Nickel-based superalloys. © 2023 Elsevier Ltd

关键词： Morphology

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Alginate-based bioink for organoid 3D bioprinting: A review

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Bioprinting 2022年 28卷

作者： Leonardo, Michael Prajatelistia, Ekavianty Judawisastra, Hermawan Materials Engineering Study Program Faculty of Mechanical and Aerospace Engineering Institut Teknologi Bandung Indonesia Materials Science and Engineering Research Group Faculty of Mechanical and Aerospace Engineering Institut Teknologi Bandung Indonesia

As a 3D cell culture, organoids have been researched thoroughly to model the human biology system in advancing disease treatment and drug development. A novel way to create an organoid is using bioink, consisting of polymeric materials and living cells, to fabricate a hydrogel scaffold through the 3D bioprinting method. Alginate has the potential to be developed as a bioink due to its good biocompatibility, low toxicity, and ease of processing method. However, studies are still required to obtain an optimum alginate-based bioink. Alginate is insufficient in terms of the cell-binding site;thus, mixing it with supplementary gelatin material can be employed to optimize further the printability, mechanical properties, and biocompatibility of alginate-based bioink. The addition of gelatin material, in addition to increasing the binding site, also makes the process of making bioink easier due to the thermoresponsive nature of gelatin. The alginate-based bioink can be further optimized depending on gelatin concentration to produce appropriate density and rheological value of bioink. The addition of gelatin into alginate-based bioink will also significantly affect the printability of bioink and the mechanical properties of resulted hydrogel scaffold, which need to be considered appropriately. The alginate-based bioink also showed good biocompatibility regarding cell viability and biological performance. This paper focuses on the relationship between the structure and properties of alginate-based bioink, the 3D bioprinting processing parameters, and the implementation of resulted hydrogel scaffold and organoid. © 2022 Elsevier B.V.

关键词： 3D bioprinting Alginate Bioink Gelatin Hydrogel scaffold

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Crystallization Kinetics and Nanoindentation Studies of Cu46zr40ti8.5al5.5 Glassy Alloy

SSRN

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SSRN 2023年

作者： Prabhu, Yogesh Jain, Abhilasha Narayan, R. Lakshmi Saini, Priyanka Vincent, S. Ryu, W.H. Park, E.S. Bhatt, Jatin Department of Metallurgical and Materials Engineering Visvesvaraya National Institute of Technology Nagpur440 010 India Centre for Materials Science School of Mechanical Engineering KLE Technological University Hubballi580031 India Department of Materials Science and Engineering Indian Institute of Technology Hauz Khas New Delhi110016 India Department of Mechanical Engineering Birla Institute of Technology and Science Pilani Dubai Campus Dubai345055 United Arab Emirates Department of Materials Science and Engineering Research Institute of Advanced Materials Institute of Engineering Research Seoul National University Seoul08826 Korea Republic of

Crystallization kinetics of Cu46Zr40Ti8.5Al5.5 metallic glass is investigated in non-isothermal and isothermal conditions. In non-isothermal condition, crystallization activation energy is determined using Kissinger’s method. Further, activation energy of reported Cu-Zr-Al metallic glasses are compared to Cu46Zr40Ti8.5Al5.5 alloy to understand the effect Ti addition on crystallization kinetics. Detailed investigation on activation energy through the crystallization process is studied. To understand the influence of nucleation and growth mechanism during the crystallization steps, samples are heated in isothermal conditions at various annealing temperatures in supercooled liquid region to determine the local Avrami’s exponent using Johnson-Mehl-Avrami (JMA) equation. Additionally, small scale mechanical response was noted on metallic glass samples to determine the influence of structure on hardness and elastic modulus. Nanoindentation results showed hardness value of 5.39 ± 0.09 GPa and Young’s modulus of 92.81± 0.52 GPa. © 2023, The Authors. All rights reserved.

关键词： Nanoindentation

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