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Effect of Cu addition on electrochemical activity of ribbons of Mg-Al-Ca anode materials for magnesium rechargeable batteries manufactured by rapid solidification method

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Keikinzoku/Journal of Japan Institute of Light Metals 2024年第1期74卷 14-17页

作者： Fukui, Shunsaku Tsukeda, Tadayoshi Aida, Tetsuo Tabata, Hironobu Kurihara, Hideki Suzuki, Mayumi Program of Materials Science and Engineering Studies in Science and Engineering Graduate School of Science and Engineering University of Toyama 3190 Gofuku Toyama-shi Toyama930-8555 Japan Faculty of Sustainable Design Academic Assembly University of Toyama Toyama-shi Toyama Japan CHUETSU METAL WORKS CO. LTD. Nakaniikawa-gun Toyama Japan Saitama Industrial Technology Center Kawaguchi Kawaguchi-shi Saitama Japan Department of Mechanical Systems Engineering Faculty of Engineering Toyama Prefectural University Imizu-shi Toyama Japan

The potential for magnesium storage batteries to become the next generation of rechargeable batteries is high. This is largely due to the abundance of magnesium metal resources and their high safety and electric capacity per volume. Our research team has been studying magnesium alloys as anode materials for these batteries. Specifically, we have been investigating the electrochemical activity and mechanism of adding copper to Mg-9mass%Al and Mg-9mass%Al-3mass%Ca. Our findings indicate that the electrochemical activity increased with the addition of 1mass%Cu, but decreased with the addition of 3mass%Cu. In addition, changes in lattice constant and basal orientation were also observed. These changes decreased with 1mass%Cu and increased with 3mass%Cu. SEM observations showed that the cell delimitation was indistinct for the 1%Cu addition. © 2024 The Japan Institute of Light Metals.

关键词： Secondary batteries

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Analysis of the Musculoskeletal Load Generated when a Small Dog Walks on a Slippery Floor*

Analysis of the Musculoskeletal Load Generated when a Small ...

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IEEE/SICE International Symposium on System Integration

作者： Shijian Li Daisuke Chugo Satoshi Muramatsu Sho Yokota Jin-Hua She Hiroshi Hashimoto Uemura Takashi Hiroaki Kamishina Yoshiharu Hata Takayuki Yamada Takahiro Uchida Graduate School of Science and Technology Kwansei Gakuin University Sanda Japan School of Information Science and Technology Tokai University Hiratsuka Japan Faculty of Science and Engineering Toyo University Kawagoe Japan School of Engineering Tokyo University of Technology Tokyo Japan Master Program of Innovation for Design and Engineering Advanced Institute of Industrial Technology Tokyo Japan KyotoAR Animal Advanced Medical Center Kyoto Japan Rinrei Co. Ltd. Tokyo Japan

ISBN: (数字)9798331531614

ISBN: (纸本)9798331531621

The objective of this paper is to identify the stresses placed on the musculoskeletal system when small dogs walk on floors with low friction coefficients. In many households, and small dogs in particular are often kept indoors. According to veterinary experience, it is known that small dogs kept indoors that walk with their lower limbs slipping cause a great deal of stress on the musculoskeletal system, and that the incidence of joint disease in the lower limbs of such small dogs is high. In this study, we measured the body movements of small dogs walking on slippery floors using a three-dimensional motion capture system and force plate system. Furthermore, by inputting these measurements into the musculoskeletal simulation model we have developed to simulate the musculoskeletal system of dogs, we derived the load on the musculoskeletal system of small dogs on slippery and non-slippery floors. As a result, it was identified that walking on a slippery floor causes a strong load on the lower limb muscles of small dogs.

关键词： Legged locomotion Limbs Friction Dogs System integration Muscles Object recognition Floors Stress Paints

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An application of conjugate gradient technique for determination of thermal conductivity as an inverse engineering problem 3

An application of conjugate gradient technique for determina...

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3rd International Conference on Advances in Mechanical engineering and Nanotechnology, ICAMEN 2021

作者： Pandey, Vivek Bekele, Addisu Ahmed, Gulam Mohammed Sayeed Jee Kanu, Nand Singh, Gyanendra Kumar Department of Thermal and Aerospace Engineering School of Mechanical Chemical and Materials Engineering Adama Science and Technology University Adama Ethiopia Centre of Excellence for Advanced Manufacturing Engineering Program of Mechanical Design and Manufacturing Engineering School of Mechanical Chemical and Materials Engineering Adama Science and Technology University Adama Ethiopia Department of Mechanical Engineering S. V. National Institute of Technology Surat India Department of Mechanical Design and Manufacturing Engineering School of Mechanical Chemical and Materials Engineering Adama Science and Technology University Adama Ethiopia

Inverse problems frequently occur when boundary conditions/thermal properties of a material are unknown, and are determined from known internal temperature measurements. A direct problem is the opposite of an inverse problem. For example, it would be the task of determining the temperature field within a material body, given boundary conditions and thermal properties. In an ill-posed, inverse problem, small variations in internal temperature measurement cause large variations in the estimated quantity such as boundary heat flux. Measured temperature variations may be due to noise, measurement error and instrumentation error, among other factors. There are various methods for solving inverse problems in materials engineering. In the paper, an inverse problem of estimating boundary heat flux for one-dimensional heat conduction is solved using the classical method of Beck and temperature dependent thermal conductivity is estimated using the more recent and advanced Conjugate Gradient method (CGM). The temperature values from the finite difference application to a direct heat transfer problem are used along with noise added to the data, in order to simulate real world, experimental conditions. The data is applied to the inverse problem of finding boundary heat flux and thermal conductivity. It is seen that Conjugate Gradient Method (CGM) along with sequential function specification method recovers the boundary heat flux and thermal conductivity quite accurately for noise levels of 1% and 2%. It is further observed that addition of future time steps stabilize the algorithm and increase accuracy of the desired results. It is also observed that CGM can recover the temperature dependent thermal conductivity quickly within few iterations, for different values of thermal conductivity function coefficients, k0and k1. CGM is found to be fast and robust when applied to one-dimensional case and can be extended to complex geometries. © 2021 Elsevier Ltd.

关键词： Inverse problems

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Distribution characteristics of inclusions along with the surface sliver defect on the exposed panel of automobile:A quantitative electrolysis method

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International Journal of Minerals,Metallurgy and materials 2020年第11期27卷 1489-1498页

作者： Xiao-qian Pan Jian Yang Joohyun Park Hideki Ono State Key Laboratory of Advanced Special Steel School of Materials Science and EngineeringShanghai UniversityShanghai 200444China Department of Materials Engineering Hanyang UniversityAnsan 426-791South Korea Faculty of Sustainable Design University of ToyamaToyama-ken 930-8555Japan

The specific distribution characteristics of inclusions along with the sliver defect were analyzed in detail to explain the formation mechanism of the sliver defect on the automobile exposed panel surface.A quantitative electrolysis method was used to compare and evaluate the three-dimensional morphology,size,composition,quantity,and distribution of inclusions in the defect and non-defect zone of automobile exposed *** Al2O3 inclusions were observed to be aggregated or chain-like shape along with the sliver defect of about 3–10μ*** aggregation sections of the Al2O3 inclusions are distributed discretely along the rolling direction,with a spacing of 3–7 mm,a length of 6–7 mm,and a width of about 3 *** inclusion area part is 0.04%–0.16%with an average value of 0.08%,the inclusion number density is 40 mm−2 and the inclusion average spacing is 25.13μ*** inclusion spacing is approximately 40–160μm,with an average value of 68.76μm in chain-like inclusion *** average area fraction and number density of inclusions in the non-defect region were reduced to about 0.002%and 1–2 mm^−2,respectively,with the inclusion spacing of 400μm and the size of Al2O3 being 1–3μm.

关键词： automobile exposed panel sliver defect quantitative electrolysis three-dimensional inclusions aggregated inclusions chain-like inclusions

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Current progress in corrosion of multi principal element alloys

arXiv

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arXiv 2024年

作者： Ghorbani, M. Li, Z. Qiu, Y. Marcus, P. Scully, J.R. Gharbi, O. Luo, H. Gupta, R.K. Zeng, Z.R. Fraser, H.L. Taheri, M.L. Birbilis, N. Faculty of Science Engineering and the Built Environment Deakin University VIC Australia College of Engineering Computing and Cybernetics Australian National University ACT Australia Faculty of Materials Wuhan University of Science and Technology Wuhan China PSL University CNRS Chimie ParisTech Institut de Recherche de Chimie Paris Physical Chemistry of Surfaces Group Paris France Department of Materials Science and Engineering University of Virginia VA United States CNRS Sorbonne Université Laboratoire de Réactivité de Surface LRS Paris France National Materials Corrosion and Protection Data Center Institute for Advanced Materials and Technology University of Science and Technology Beijing Beijing China Department of Materials Science and Engineering North Carolina State University RaleighNC United States State Key Laboratory of Advanced Design and Manufacturing Technology for Vehicle Hunan University Changsha China Department of Materials Science and Engineering The Ohio State University ColumbusOH United States Department of Materials Science and Engineering Johns Hopkins University BaltimoreMD United States

Whilst multi-principal element alloys (MPEAs) remain a promising class of materials owing to several attractive mechanical properties, their corrosion performance is also unique. In this concise review, we present an emerging overview of some of the general features related to MPEA corrosion, following a decade of work in the field. This includes highlighting some of the key aspects related to the electrochemical phenomena in MPEA corrosion, and the relevant future works required for a holistic mechanistic understanding. In addition, a comprehensive database of the reported corrosion performance of MPEAs is presented – based on works reported to date. The database is assembled to also allow users to undertake machine learning or their own data analysis, with a parsed representation of alloy composition, test electrolyte, and corrosion related parameters. © 2024, CC BY-NC-ND.

关键词： Database systems

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Pseudobrookite based heterostructures for efficient electrocatalytic hydrogen evolution

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materials Reports(Energy) 2021年第2期1卷 90-98页

作者： Niranjala Fernando Jayashree Swaminathan Francisco Carlos Robles Hernandez Gayan Priyadarshana Chanaka Sandaruwan Wenli Yang Veranja Karunaratne Zixing Wang Gehan AJAmaratunga Nilwala Kottegoda Ashokkumar Meiyazhagan Pulickel M.Ajayan Department of Design and Engineering Faculty of Science and TechnologyBournemouth UniversityDorsetBH125BBUK Department of Materials Science&NanoEngineering Rice UniversityTexas77005USA Department of Mechanical Engineering Technology University of HoustonHoustonTX77204USA Materials Science&Engineering Cullen College of EngineeringUniversity of HoustonHoustonTX77204USA Department of Materials and Mechanical Technology Faculty of TechnologyUniversity of Sri JayewardenepuraPitipanaHomagamaSri Lanka Sri Lanka Institute of Nanotechnology PitipanaHomagamaSri Lanka Department of Engineering University of CambridgeCambridgeCB21TNUK Department of Chemistry Center for Advanced Materials ResearchUniversity of Sri JayewardenepuraGangodawilaNugegodaSri Lanka

Synthesis of ultrathin heterostructures has received much attention in the recent past due to their unique physical and chemical *** this work,we report the synthesis of Fe_(2)TiO_(5)–TiO_(2)heterostructures using a simple hydrothermal technique employing natural ilmenite as the *** arranged nanostructures with interconnected nano-petals of thickness around 50 nm are *** electrocatalytic properties of the synthesized Fe_(2)TiO_(5)–TiO_(2)heterostructures are enhanced following the cathodization *** observed enhancement in the synthesized materials’electrocatalytic property can be attributed to the defect-rich Fe_(2-x)TiO_(5-x)-TiO_(2-x)*** current approach and technique discussed in this work offer a simple method to synthesize a nanostructured heterostructure material and create defects for enhancing electrocatalytic activity.

关键词： Heterostructures Cathodization Green catalyst 2D materials Hydrogen evolution Electrocatalysis Pseudobrookite

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In Situ Topotactic Preparation of Porous Plate-Like Li2znti3o8 as the Lithium-Ion Batteries Anode for Enhancing Electrochemical Reaction Kinetics and Li+ Storage

SSRN

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SSRN 2022年

作者： Cheng, Weijie Feng, Qi Wang, Xing Huang, Jianfeng Wang, Yong Yin, Lixiong Li, Jiayin Kong, Xingang School of Materials Science and Engineering Shaanxi University of Science and Technology Weiyang Shaanxi Xi’an710021 China Department of Advanced Materials Science Faculty of Engineering and Design Kagawa University 2217-20 Hayashi-cho Takamatsu-shi761-0396 Japan

"Zero strain" spinel Li2ZnTi3O8 (LZTO) is widely studied in the field of anode materials for lithium-ion batteries (LIBs) in recent years because of its stable cycling performance, no volume expansion and higher theoretical capacity than that of Li4Ti5O12. In this work, porous plate-like LZTO is synthesized via a simple in situ topological reaction with layered Titanic acid as the precursor. Due to its special morphology, a large amount of pseudocapacitance is introduced for lithium-ion storage in conjunction with the intercalation reaction. This co-storage mode allows more Li+ to be stored, resulting in the plate-like LZTO getting the highest capacity in the LZTO-based anode. It shows a reversible capacity of 338 mAh/g at 0.1 A/g and maintains excellent performance in long cycle tests under high current density (208 mAh/g after 1000 cycles at 1 A/g and 118 mAh/g after 2000 cycles at 5 A/g). In terms of electrochemical reaction kinetics, the two-dimensional plate structure provides a flat path for electron transport and the micropores on its surface provide many fast channels for the Li+ diffusion. Its simple synthesis method and excellent electrochemical properties prove that it has a great potential to become the new generation of anode materials for LIBs. © 2022, The Authors. All rights reserved.

关键词： Anodes

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Weakening s-d orbital hybridization of metallic iridium by tungsten atoms for acidic water splitting

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Applied Catalysis A: General 2023年 649卷 1页

作者： Chang, Chaofeng Xie, Yuhua Luo, Fang Zhou, Shaowei Yang, Zehui Sustainable Energy Laboratory Faculty of Materials Science and Chemistry China University of Geosciences Wuhan 388 Lumo RD Wuhan430074 China State Key Laboratory for Hubei New Textile Materials and Advanced Processing Technology School of Materials Science and Engineering Wuhan Textile University Wuhan430200 China Power system and new energy China Ship Development and Design Center Wuhan430074 China

To economically realize proton electrolyte membrane water splitting technology, stable and high-performance oxygen evolution reaction (OER) electrocatalyst is significantly demanded. In this work, we invite tungsten atoms to metallic iridium (Ir) to weaken s-d hybridization of Ir-Ir bond due to the higher electronegativity accepting electron from Ir atoms;as a result, the adsorbed O* species become electrophilic favorable for the nucleophilic attack by H2O leading to 22 % decrement in energy barrier for the formation of OOH* species. Therefore, iridium-tungsten (IrW) electrocatalyst exhibits 3.7-fold higher turnover frequency (TOF) than metallic Ir at overpotential of 370 mV in acidic OER catalysis. Moreover, stable OER performance is recorded due to the high cohesive energy of tungsten atoms. Additionally, TOF of IrW electrocatalyst reaches 10.1 s−1 at overpotential of 100 mV in acidic hydrogen evolution reaction (HER) test, 7.6-time higher than Pt/C and metallic Ir. IrW electrocatalyst only needs 1.52 V to attain 10 mA cm−2 in acidic overall water splitting. © 2022 Elsevier B.V.

关键词： Chemical bonds

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Ultralow-Energy-Consumption Photosynaptic Transistor Utilizing Conjugated Polymers/Perovskite Quantum Dots Nanocomposites With Ligand Density Optimization

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Small 2024年第46期20卷 e2402567页

作者： Tsai, Cheng-Hang Chen, Wei-Cheng Lin, Yan-Cheng Huang, Yu-Hang Lin, Kai-Wei Wu, Jing-Yang Satoh, Toshifumi Chen, Wen-Chang Kuo, Chi-Ching Department of Molecular Science and Engineering Institute of Organic and Polymeric Materials National Taipei University of Technology Taipei10608 Taiwan Department of Chemical Engineering National Taiwan University Taipei10617 Taiwan Advanced Research Center for Green Materials Science and Technology National Taiwan University Taipei10617 Taiwan Department of Chemical Engineering National Cheng Kung University Tainan70101 Taiwan Faculty of Engineering Hokkaido University Sapporo060-8628 Japan Institute for Chemical Reaction Design and Discovery Hokkaido University Sapporo001-0021 Japan

The photosynaptic transistor stands as a promising contender for overcoming the von Neumann bottleneck in the realm of photo-communication. In this context, photonic synaptic transistors is developed through a straightforward solution process, employing an organic semiconducting polymer with pendant-naphthalene-containing side chains (PDPPNA) in combination with ligand-density-engineered CsPbBr3 perovskite quantum dots (PQDs). This fabrication approach allows the devices to emulate fundamental synaptic behaviors, encompassing excitatory postsynaptic current, paired-pulse facilitation, the transition from short-to-long-term memory, and the concept of "learning experience." Notably, the phototransistor, incorporating the blend of the PDPPNA and CsPbBr3 PQDs washed with ethyl acetate, achieved an exceptional memory ratio of 104. Simultaneously, the same device exhibited an impressive paired-pulse facilitation ratio of 223% at a moderate operating voltage of −4 V and an extraordinarily low energy consumption of 0.215 aJ at an ultralow operating voltage of −0.1 mV. Consequently, these low-voltage synaptic devices, constructed with a pendant side-chain engineering of organic semiconductors and a ligand density engineering of PQDs through a simple fabrication process, exhibit substantial potential for replicating the visual memory capabilities of the human brain. © 2024 Wiley-VCH GmbH.

关键词： Perovskite

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Exploring the potential of low-dimensional materials from cigarette butts for energy applications: A comprehensive review

Advanced Powder Materials

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advanced Powder materials 2025年第3期4卷

作者： Chen, Ye Li, Shilong Xia, Congxin Tian, Miao Guo, Yaxin Liu, Xupo Cui, Mingjin Dou, Shixue Lee, Hanleem Subramaniam, Vadivel Ramachandran, Krishnamoorthy Liu, Xinghui Henan Engineering Research Center of Design and Recycle for Advanced Electrochemical Energy Storage Materials School of Materials Science and Engineering Henan Normal University Xinxiang453007 China Institute of Energy Materials Science University of Shanghai for Science and Technology Shanghai200093 China Department of Chemistry Myongji University 116 Myongji Ro Gyeonggi-do Yongin17058 Korea Republic of Thandalam Tamil Nadu Chennai602105 India Department of Physics Faculty of Engineering and Technology SRM Institute of Science and Technology Vadapalani Campus Tamilnadu Chennai600026 India Science and Technology on Aerospace Chemical Power Laboratory Laboratory of Emergency Safety and Rescue Technology Hubei Institute of Aerospace Chemotechnology Xiangyang441003 China

Carbon-based low-dimensional materials (CLDM) with elemental carbon as the main component have unique physical and chemical properties, and become the focus of research in many fields including energy, environmental protection, and information technology. Notably, cellulose acetate, the main component of cigarette butts (CBs), is a one-dimensional precursor with a large specific surface area and aspect ratio. Still, their usefulness as building fillers has often been underestimated before. This review summarizes recent advances in CBs recycling and provides suggested guidelines for its use as a CLDM material in renewable energy. Specifically, we first describe the harmful effects of CBs as pollutants in our lives to emphasize the importance of proper recycling. We then summarize previous methods of recycling CBs waste, including clay bricks, asphalt concrete pavement, gypsum, acoustic materials, chemisorption, vector control, and corrosion control. The potential applications of CBs include triboelectric nanogenerator applications, flexible batteries, enhanced metal-organic framework material energy storage devices, and carbon-based hydrogen storage. Finally, the advantages of utilizing CBs-derived CLDM materials over conventional solutions in the energy field are discussed. This review will provide new avenues for solving the intractable problem of CBs and reducing the manufacturing costs of renewable materials. © 2025 Central South University.

关键词： Battery storage

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