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Activated carbon derived from coconut shell chars for use as a cathode material in aluminium-ion batteries

Journal of Physics: Conference Series 2021年第1期1719卷

作者： P Thanwisai P Phuenhinlad N Chaiyapo Y Kanaphan J Nash C Chotsuwan T Rattana-amron A Klamchuen N Meethong Department of Physics Faculty of Science Khon Kaen University Khon Kaen 40002 Thailand Materials Science and Nanotechnology Program Department of Physics Faculty of Science Khon Kaen University Khon Kaen 40002 Thailand The Graduate School Udon Thani Rajabhat University Udon Thani 41000 Thailand National Nanotechnology Centre (NANOTEC) National Science and Technology Development Agency Pathumthani 12120 Thailand Institute of Nanomaterials Research and Innovation for Energy (IN-RIE) NANOTEC-KKU RNN on Nanomaterials Research and Innovation for Energy Khon Kaen University Khon Kaen 40002 Thailand

Aluminium-ion batteries (AIBs) are a promising energy storage system due to their significant advantages of low cost, high anode capacity and safety. Nevertheless, the critical challenge limiting AIB performance is an inadequate cathode capacity that diminishes their cell energy density. To overcome this limitation, it is important to develop novel cathode materials with high cathode capacity for AIBs. Herein, we report an activated carbon derived from coconut shell chars for use as a cathode material in AIBs. The activated carbon was synthesized via KOH activation and carbonization. The prepared cathode material exhibits a high specific capacity of 38 mAh g−1 at a high current density of 1 A g−1 due to its high specific surface area of 2686 m2 g−1, which is beneficial for chloroaluminate-ion accommodation. This result indicates that the activated carbon derived from coconut shell chars with its high surface area is electrochemically active and is likely to be a promising cathode material for AIBs.

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Corrigendum for “Review—Contemporary Progresses in Carbon-Based Electrode Material in Li-S Batteries” J. Electrochem. Soc. 169, 020530 2022

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Journal of The Electrochemical Society 2023年第11期170卷 119001-119001页

作者： Utkarsh Chadha Preetam Bhardwaj Sanjeevikumar Padmanaban Reyna Michelle Suneel Kevin Milton Neha Subair Akshat Pandey Mayank Khanna Divyansh Srivastava Rhea Mary Mathew Senthil Kumaran Selvaraj Murali Banavoth Prashant Sonar Badrish Badoni Nalamala Srinivasa Rao S. Gopa Kumar Arun Kumar Ray Amit Kumar Department of Manufacturing Engineering School of Mechanical Engineering (SMEC) Vellore Institute of Technology (VIT) Vellore Tamilnadu 632014 India Centre for Nanotechnology Research (CNR) School of Electronics Engineering (SENSE) Vellore Institute of Technology Vellore 632014 Tamil Nadu 632014 India Center for Electric Vehicles and Power Department of Electrical and Electronics Engineering Anna University Chennai-600025 India & Department of Energy Technology Aalborg University Esbjerg Denmark School of Chemical Engineering (SCHEME) Vellore Institute of Technology (VIT) Vellore Tamilnadu 632014 India Solar Cells and Photonics Research Laboratory School of Chemistry University of Hyderabad Hyderabad Telangana 500046 India Centre for Materials Science School of Chemistry and Physics Queensland University of Technology Brisbane QLD 4001 Australia Department of Physics Bal Ganga Degree College Sendul Kemar Tehri Garhwal Uttrakhand 249155 India Department of Chemistry Government Degree College Cumbum Prakasam Andhra Pradesh 523333 India Department of Electrical and Electronics Engineering Rohini College of Engineering and Technology Palkulam Anjugramam Tamilnadu 629401 India Department of Mechanical Engineering Hindu College of Engineering Sonipat Haryana-131001 India Department of Physics Radhey Hari Government Post Graduate College Kashipur Kumaun University Nainital Uttarakhand 244713 India

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Magnetic Control of Soft Chiral Phonons in PbTe

arXiv

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arXiv 2021年

作者： Baydin, Andrey Hernandez, Felix G.G. Rodriguez-Vega, Martin Okazaki, Anderson K. Tay, Fuyang Timothy Noe, G. Katayama, Ikufumi Takeda, Jun Nojiri, Hiroyuki Rappl, Paulo H.O. Abramof, Eduardo Fiete, Gregory A. Kono, Junichiro Department of Electrical and Computer Engineering Rice University HoustonTX77005 United States Smalley-Curl Institute Rice University HoustonTX77005 United States Instituto de Física Universidade de São Paulo SP São Paulo05508-090 Brazil Theoretical Division Los Alamos National Laboratory Los AlamosNM87545 United States Laboratório Associado de Sensores e Materiais Instituto Nacional de Pesquisas Espaciais SP São José dos Campos12201-970 Brazil Applied Physics Graduate Program Smalley-Curl Institute Rice University HoustonTX77005 United States Department of Physics Graduate School of Engineering Science Yokohama National University Yokohama240-8501 Japan Institute for Materials Research Tohoku University Sendai980-8577 Japan Department of Physics Northeastern University BostonMA02115 United States Department of Physics Massachusetts Institute of Technology CambridgeMA02139 United States Department of Physics and Astronomy Rice University HoustonTX77005 United States Department of Material Science and NanoEngineering Rice University HoustonTX77005 United States

PbTe crystals have a soft transverse optical phonon mode in the terahertz frequency range, which is known to efficiently decay into heat-carrying acoustic phonons, resulting in anomalously low thermal conductivity. Here, we studied this phonon via polarization-dependent terahertz spectroscopy. We observed softening of this mode with decreasing temperature, indicative of incipient ferroelectricity, which we explain through a model including strong anharmonicity with a quartic displacement term. In magnetic fields up to 25 T, the phonon mode splits into two modes with opposite handedness, exhibiting circular dichroism. Their frequencies display Zeeman splitting together with an overall diamagnetic shift with increasing magnetic field. Using a group-theoretical approach, we demonstrate that these observations are the result of magnetic field-induced morphic changes in the crystal symmetries through the Lorentz force exerted on the lattice ions. Thus, our study reveals a novel process of controlling phonon properties in a soft ionic lattice by a strong magnetic field. Copyright © 2021, The Authors. All rights reserved.

关键词： Magnetic fields

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Generation and Propagation of Superhigh-Frequency Bulk Acoustic Waves in GaAs

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Physical Review Applied 2019年第4期12卷 044013-044013页

作者： Diego H.O. Machado Antonio Crespo-Poveda Alexander S. Kuznetsov Klaus Biermann Luis V.A. Scalvi Paulo V. Santos Paul-Drude-Institut für Festkörperelektronik Leibniz-Institut im Forschungsverbund Berlin e.V. Hausvogteiplatz 5–7 10117 Berlin Germany Department of Physics São Paulo State University (UNESP) School of Sciences and Graduate Program in Materials Science and Technology (POSMAT) Av. Eng. Luiz Edmundo C. Coube 14-01 17033-360 Bauru SP Brazil

Coherent superhigh-frequency (SHF) vibrations provide an excellent tool for the modulation and control of excitations in semiconductors. Here, we investigate the piezoelectric generation and propagation of longitudinal bulk acoustic waves (LBAWs) with frequencies up to 20 GHz in GaAs crystals using bulk acoustic-wave resonators (BAWRs) based on piezoelectric thin ZnO films. We show that the electroacoustic conversion efficiency of the BAWRs depends sensitively on the sputtering conditions of the ZnO films. The BAWRs are then used for the study of the propagation properties of the LBAWs in GaAs in the frequency and temperature ranges from 1 to 20 GHz and 10 and 300 K, respectively, which have so far not been experimentally accessed. We find that the acoustic absorption of GaAs in the temperature range from 80 K to 300 K is dominated by scattering with thermal phonons. In contrast, at lower temperatures, the acoustic absorption saturates at a frequency-dependent value. Experiments carried out with different propagation lengths indicate that the saturation is associated with losses during reflections at the sample boundaries. We also demonstrate devices with a high quality factor fabricated on top of acoustic Bragg reflectors. The results presented here prove the feasibility of high-quality acoustic resonators embedding GaAs-based nanostructures, thus opening the way for the modulation and control of their properties by electrically excited SHF LBAWs.

关键词： Acoustic phonons Mechanical & acoustical properties Optomechanics III-V semiconductors Piezoelectrics Acoustic techniques Atomic force microscopy Microwave techniques

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Skeletal Muscle Regeneration: Functional Skeletal Muscle Regeneration with Thermally Drawn Porous Fibers and Reprogrammed Muscle Progenitors for Volumetric Muscle Injury (Adv. Mater. 14/2021)

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Advanced materials 2021年第14期33卷

作者： Yoonhee Jin Dena Shahriari Eun Je Jeon Seongjun Park Yi Sun Choi Jonghyeok Back Hyungsuk Lee Polina Anikeeva Seung-Woo Cho Department of Biotechnology Yonsei University Seoul 03722 Republic of Korea Research Laboratory of Electronics Massachusetts Institute of Technology Cambridge MA 02139 USA McGovern Institute for Brain Research Cambridge MA 02139 USA Department of Biomaterials Science and Engineering Yonsei University Seoul 03722 Republic of Korea Department of Bio and Brain Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea KAIST Institute for Health Science and Technology Daejeon 34141 Republic of Korea School of Mechanical Engineering Yonsei University Seoul 03722 Republic of Korea Department of Materials Science and Engineering Massachusetts Institute of Technology Cambridge MA 02139 USA Department of Brain and Cognitive Sciences Massachusetts Institute of Technology Cambridge MA 02139 USA Center for Nanomedicine Institute for Basic Science (IBS) Seoul 03722 Republic of Korea Graduate Program of Nano Biomedical Engineering (NanoBME) Advanced Science Institute Yonsei University Seoul 03722 Republic of Korea

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Cover Feature: Chemo-Biological Upcycling of Poly(ethylene terephthalate) to Multifunctional Coating materials (ChemSusChem 19/2021)

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ChemSusChem 2021年第19期14卷

作者： Prof. Hee Taek Kim Mi Hee Ryu Ye Jean Jung Sooyoung Lim Hye Min Song Prof. Jeyoung Park Prof. Sung Yeon Hwang Dr. Hoe-Suk Lee Prof. Young Joo Yeon Dr. Bong Hyun Sung Prof. Uwe T. Bornscheuer Prof. Si Jae Park Prof. Jeong Chan Joo Prof. Dongyeop X. Oh Department of Food Science and Technology Chungnam National University Daejeon 34134 (Republic of Korea Research Center for Bio-based Chemicals Korea Research Institute of Chemical Technology Daejeon 34114 & Ulsan 44429 (Republic of Korea Department of Chemical Engineering and Materials Science Graduate Program in System Health Science & Engineering Ewha Womans University Seoul 03760 (Republic of Korea Advanced Materials and Chemical Engineering University of Science and Technology (UST) Daejeon 34113 (Republic of Korea Department of Biochemical Engineering Gangneung-Wonju National University Gangneung-si Gangwon-do 25457 (Republic of Korea Synthetic Biology and Bioengineering Research Center Korea Research Institute of Bioscience and Biotechnology Daejeon 34141 (Republic of Korea Department of Biotechnology & Enzyme Catalysis Institute of Biochemistry University of Greifswald 17487 Greifswald Germany Department of Biotechnology The Catholic University of Korea Bucheon-si Gyeonggi-do 14662 (Republic of Korea

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Luwak coffee in vitro fermentation : literature review

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IOP Conference Series: Earth and Environmental science 2019年第1期230卷

作者： Fitri A B Tawali A Laga Post Graduate Student Agricultural Sciences Study Program Hasanuddin University Makassar Indonesia Food Science and Technology Study Program Department of Agricultural Technology Faculty of Agriculture Hasanuddin University Makassar Indonesia

Luwak coffee is one of the Indonesia traditional coffee that known globally because of its unique aroma and flavor. Luwak coffee was produced by a fermentation process in luwak digestion by involving microbe that can be found in luwak digestion. Luwak coffee fermentation process using luwak animal has many weakness such as inefficient production processes, and final product quality that always makes consumers hesitate in terms of its hygiene and halal. Therefore some research to produce coffee with the quality of luwak coffee without using luwak began to be developed. Several methods of fermentation to produce coffee with quality luwak coffee are discussed in this paper, such as fermentation by in vitro technique

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Curved copper nanowires-based robust flexible transparent electrodes via all-solution approach

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Nano Research 2017年第9期10卷 3077-3091页

作者： Zhenxing Yin Seung Keun Song Sanghun Cho Duck-Jae You Jeeyoung Yoo Suk Tai Chang Youn Sang Kim Program in Nano Science and Technology Graduate School of Convergence Science and Technology Seoul National University Seoul 08826 Republic of Korea School of Chemical Engineering and Materials Science Chung-Ang University Seou106974 Republic of Korea Advanced Institutes of Convergence Technology 145 Gwanggyo-ro Yeongtong-gu Suwon-si Gyeonggi-do 16229 Republic of Korea

Curved Cu nanowire (CCN)-based high-performance flexible transparent conductive electrodes (FTCEs) were fabricated via a fully solution-processed approach, involving synthesis, coating, patterning, welding, and transfer. Each step involved an innovative technique for completing the all-solution processes. The high-quality and well-dispersed CCNs were synthesized using a multi-polyol method through the synergistic effect of specific polyol reduction. To precisely control the optoelectrical properties of the FTCEs, the CCNs were uniformly coated on a polyimide (PI) substrate via a simple meniscus-dragging deposition method by tuning several coating parameters. We also employed a polyurethane (PU)-stamped patterning method to effectively produce 20 μm patterns on CCN thin films. The CCN thin films exhibited high electrical performance, which is attributed to the deeply percolated CCN network formed via a solvent-dipped welding method. Finally, the CCN thin films on the PI substrate were partially embedded and transferred to the PU matrix to reduce their surface roughness. Through consecutive processes involving the proposed methods, a highly percolated CCN thin film on the PU matrix exhibited high optoelectrical performance (R s = 53.48 Ω/□ at T = 85.71%), excellent mechanical properties (R/R 0 < 1.10 after the 10th repetition of tape peeling or 1,000 bending cycles), and a low root-mean-square surface roughness (R rms = 14.36 nm).

关键词： curved Cu nanowires all-solution processes 20 μm patterns high performance transparent electrode

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An approach on monitoring evolution of projects by professional performance assessment: A case study at the amazon regional center of the National Institute for Space Research

An approach on monitoring evolution of projects by professio...

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2018 Portland International Conference on Management of Engineering and technology, PICMET 2018

作者： Da Silva, Marck Barros, Marcia Nazare Rodrigues Santos, Lucyana Barros Adami, Marcos Gomes, Alessandra Rodrigues Foundation for Science Technology and Space Applications FUNCATE Saõ José dos Campos Brazil National Institute for Space Research INPE Amazon Regional Center Belém Brazil Federal University of Para Postgraduate Program in Amazon's Natural Resource Management and Local Development UFPA PPGEDAM Belém Brazil Federal University of Para Post-Graduate Program in Environmental Sciences UFPA PPGCA Belém Brazil

ISBN: (纸本)9781890843373

This work investigates strategic management processes of projects involved in the Brazilian aerospace field, addressing the Regional Center of the Amazon of the National Institute of Space Research. It proposes an approach in the monitoring of the evolution of projects by evaluation of professional performance, showing results in graphs and the need to survey and follow the most evident and significant technological advances in the mapping environment of land use and land cover in the Amazon. It addresses the main difficulties faced in the process of managing projects and people to achieve goals, needing to know the Geographic Information System tools used by employees, such as Terramazon, and their respective times consumed in this type of software. The work intends to serve as a basis for investigating, developing and implementing new management options that will reduce the efforts required by managers and administrators during the process of monitoring the evolution of projects. The methodology of Project Management Institute (PMI) and its Guide to the Project Management Body of Knowledge (PMBOK Guide) was used in this research work, ensuring an international quality. © 2018 Portland International Conference on Management of Engineering and technology, Inc. (PICMET).

关键词： Project management

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Author Correction: Antibodies from dengue patients with prior exposure to Japanese encephalitis virus are broadly neutralizing against Zika virus

Communications biology

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Communications biology 2024年第1期7卷 252页

作者： Gielenny M Salem Jedhan Ucat Galula Shang-Rung Wu Jyung-Hurng Liu Yen-Hsu Chen Wen-Hung Wang Sheng-Fan Wang Cheng-Sheng Song Fan-Chi Chen Adrian B Abarientos Guan-Wen Chen Cheng-I Wang Day-Yu Chao Graduate Institute of Microbiology and Public Health College of Veterinary Medicine National Chung Hsing University Taichung City 402 Taiwan. Institute of Oral Medicine School of Dentistry College of Medicine National Cheng Kung University Tainan City 701 Taiwan. Institute of Basic Medical Sciences College of Medicine National Cheng Kung University Tainan City 701 Taiwan. Graduate Institute of Genomics and Bioinformatics College of Life Sciences National Chung Hsing University Taichung City 40227 Taiwan. School of Medicine College of Medicine National Sun Yat-Sen University Kaohsiung City 80424 Taiwan. Center for Tropical Medicine and Infectious Disease Research Kaohsiung Medical University Kaohsiung City 80708 Taiwan. Division of Infectious Diseases Department of Internal Medicine Kaohsiung Medical University Hospital Kaohsiung Medical University Kaohsiung City 80708 Taiwan. Department of Medical Laboratory Science and Biotechnology Kaohsiung Medical University Kaohsiung City 80708 Taiwan. Doctoral Program in Microbial Genomics National Chung Hsing University and Academia Sinica Taichung City 402 Taiwan. Singapore Immunology Network Agency for Science Technology and Research (A*STAR) 8A Biomedical Grove Immunos Singapore 138648 Singapore. Graduate Institute of Microbiology and Public Health College of Veterinary Medicine National Chung Hsing University Taichung City 402 Taiwan. dychao@nchu.edu.tw. Doctoral Program in Microbial Genomics National Chung Hsing University and Academia Sinica Taichung City 402 Taiwan. dychao@nchu.edu.tw. Department of Post-Baccalaureate Medicine College of Medicine National Chung Hsing University Taichung City 402 Taiwan. dychao@nchu.edu.tw.

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