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Anhydride type film-forming electrolyte additives for high-temperature LiNi0.6Co0.2Mn0.2O2//graphite pouch cells

Progress in Natural Science:Materials International 2023年第3期33卷 320-327页

作者： Anwei Zhang Chengyun Wang Weizhen Fan Jingwei Zhao Yanping Huo Xijun Xu GAC Automotive Research &Development Center Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials School of Materials Science and Engineering South China University of Technology Research and Development Center Guangzhou Tinci Materials Technology Co. Ltd. College of Chemical Engineering and Light Industry Guangdong University of Technology

LiNi0.6Co0.2Mn0.2O2//graphite full cell, due to its high energy density as the most promising candidate for power batteries received increased attention, but the severe capacity loss under high-temperature conditions prevents their large-scale application. Here, glutaric anhydride（GA） and succinic anhydride（SA） as electrolyte additives are investigated to overcome the high-temperature problem of LiNi0.6Co0.2Mn0.2O2//graphite cells. Due to the unique film-forming features and high-temperature stability, the cells containing 0.5% GA and 0.5% SA can retain capacity retention of 91.2% and 92.4% stored at 60°C for 15 days, corresponding to a negligible capacity loss of 4.6 and 0.8 m Ah g-1after 200 cycles, respectively. In addition, the lifespans of cells under 25°C are also significantly extended by introducing GA and SA into the electrolytes. Electrochemical and spectroscopic techniques results indicate the full cell capacity loss is predominantly caused by the unstable anode solid electrolyte interphase（SEI） layer and a stable SEI film derived from GA and SA is formed on the graphite electrode *** SEI film can effectively inhibit the consumption of electrolytes and enhance the high-temperature performance of cells. This work paves a way for moderating high energy density cells' work under high-temperature operation by developing special anodic film-forming electrolyte additives.

关键词： Anhydride-based Electrolyte additives Film-forming LiNi0.6Co0.2Mn0.2O2//graphite High-temperature performance

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Deep Learning Algorithm With Residual Blocks for Chemical Gas Concentration Estimation

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Journal of Institute of Control, Robotics and Systems 2023年第7期29卷 556-561页

作者： Jang, Hee-Deok Park, Jae-Hyeon Chang, Dong Eui Seo, Hyun Soo Nam, Hyunwoo Department of Electronics Engineering Korea Advanced Institute of Science and Technology Korea Republic of Chem-bio Technology Center Advanced Defense Science and Technology Research Institute Agency for Defense Development Korea Republic of

Chemical warfare agents (CWA) are highly toxic and hazardous substances that cause serious harm to humans, even when used in small quantities. The accurate estimation of the concentration of CWA is crucial to allow effective responses to these types of attacks. In this paper, we propose a deep learning algorithm for chemical gas concentration estimation, referred to as MLP-res, and compare its estimation performance with those of other machine learning algorithms. MLP-res utilizes a structure with residual blocks and demonstrates comparable or even superior performance compared with those of existing machine learning algorithms. Additionally, MLP-res exhibits high-generalization performance even with the use of experimental condition data that were not used for training. These results indicate that MLP-res can accurately estimate the concentration of chemical gases in actual environments. © ICROS 2023.

关键词： Learning algorithms

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Cyclic quenching treatment doubles the Charpy V-notch impact energy of a 2.3 GPa maraging steel

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材料科学技术（英文版） 2025年第6期209卷 311-328页

作者： Xinlei Zhou Chunni Jia Peng Mi Honglin Zhang Wei Yan Wei Wang Mingyue Sun Sybrand van der Zwaag Lijian Rong School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016PR China Shi-changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016PR China Shi-changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016PR China China Aerodynamics Research and Development Center Mianyang 621000PR China Faculty of Aerospace Engineering Delft University of TechnologyDelftNetherlands

A cyclic quenching treatment(CQT)succeeded in turning a 2.3 GPa maraging steel with a Charpy impact energy of 9 J into a new grade with the same strength but a Charpy impact energy of 20 J upon 4 cyclic *** improvement of mechanical properties is attributed to the refinement and increased chemical heterogeneity of the martensitic substructure,rather than the refinement of prior austenite grain(PAG),as well as the Transformation-Induced Plasticity(TRIP)effect facilitated by small austenite *** role of local segregation of Ni during CQT in the formation of Ni-rich austenite grains,Ni-rich martensite laths and Ni-poor martensite laths,was investigated and verified by DICTRA *** study highlights the important influence of Ni partitioning behavior during CQT,providing insights into microstructural evolution and mechanical properties.

关键词： Maraging steel Cyclic quenching treatment Ni partitioning Ultrafine lath Austenite Toughness

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Influence of ultrasonic agitation on dispersion of fibers in a shell mold for investment casting

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China Foundry 2025年

作者： Zhi-cheng Feng Kai Lü Yan Lu Wen-bo Jin Lei Che School of Materials Science and Engineering Inner Mongolia University of Technology Engineering Research Center of Development and Processing Protection of Advanced Light Metals Ministry of Education The Inner Mongolia Advanced Materials Engineering Technology Research Center

To develop a suitable production process for fiber reinforced investment casting shell mold,three methods were studied:the traditional method （M1）,the method of adding fiber into silica sol with mechanical stirring and ultrasonic agitation （M2）,and the method of adding fiber into slurry with mechanical stirring and ultrasonic agitation for durations of 3,15,30,and 45 min （M3）.The bending strength,high-temperature self-load deformation,and thermal conductivity of the shell molds were *** results reveal that the enhancement of fiber dispersion through ultrasonic agitation improves the comprehensive performance of the shell *** maximum green bending strength of the shell mold by M2reaches 3.29 MPa,which is 29%higher than that of the shell mold prepared by ***,the high-temperature self-load deformation of the shell mold is reduced from 0.62%to 0.44%.In addition,simultaneous ultrasonic agitation and mechanical stirring effectively shorten the slurry preparation time while maintaining comparable levels of fiber *** the process M3-45 min,the fillers are uniformly dispersed in the slurry,and the fired bending strength and the high-temperature self-load deformation reach 6.25 MPa and 0.41%,***,the proposed ultrasonic agitation route is promising for the fabrication of fiber-reinforced shell molds with excellent fibers dispersion.

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MXene based flexible microheater for enhanced infrared imaging of cerebral blood flow

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Progress in Natural Science:Materials International 2024年第5期34卷 1021-1028页

作者： Qinli Ye Jinghui Lin Guoxiang Wang Shuwen Zeng Tao Jiang Xiang Gao Muhammad Danang Birowosuto Wei Xiong Chenjie Gu The Research Institute of Advanced Technology Ningbo University Department of Neurosurgery The First Affiliate Hospital of Ningbo University Light Nanomaterials & Nanotechnologies (L2n) CNRS-UMR 7004 Université de Technologie de Troyes ?ukasiewicz Research Network-PORT Polish Center for Technology Development Ningbo Institute of Oceanography

Infrared thermography technology is a noninvasiveness and real-time imaging method, it has attracted enormous attentions for blood flow imaging. However, the implementation of infrared thermography technology is still limited by the poor imaging quality caused by the low temperature discrimination between the target blood vessel and background. Herein, we reported a flexible and low-cost MXene based photothermal microheater for enhancing the infrared imaging of blood flow. In the experiment, MXene films with specific thickness was prepared by vacuum filtering different concentrations of MXene colloidal solutions. Thereafter, the microheaters were fabricated by assembling the MXene films on the PU tape/PDMS substrate, and then sealed with another layer of pure PDMS film on the top of MXene film. The photothermal performance of the microheaters were evaluated by using an 808-nm laser as the exciting source. Experimental results show that the optimal microheater（MXene content: 17.5 mg） can reach a safe temperature of 41.5°C with 43.9 s under the light irradiation of100 mW·cm-2. Moreover, it can be stabilized at the equilibrium temperate for over 25 min. Finally, the above optimal microheater was used to accurately heat the simulated blood vessel. It shows that temperature difference of 3.3°C can be induced between the heated blood vessel and environment. As a result, it significantly enhances the quality of the infrared imaging of the blood flow in the simulated vascular network.

关键词： MXene nanosheets Microheater Infrared imaging Blood flow

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Microstructures,corrosion behavior and mechanical properties of as-cast Mg-6Zn-2X(Fe/Cu/Ni)alloys for plugging tool applications

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International Journal of Minerals,Metallurgy and Materials 2024年第4期31卷 697-711页

作者： Baosheng Liu Jiali Wei Shaohua Zhang Yuezhong Zhang Pengpeng Wu Daqing Fang Guorui Ma School of Materials Science and Engineering Taiyuan University of Science and TechnologyTaiyuan 030024China State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an 710049China Intelligent Equipment Research and Development Center Zhuhai Institute of Advanced Technology Chinese Academy of SciencesZhuhai 519080China Advanced Materials Research Institute Zhuhai Dingmei Medical Technology Co.Ltd.Zhuhai 519000China

Mg-6Zn-2X(Fe/Cu/Ni)alloys were prepared through semi-continuous casting,with the aim of identifying a degradable magnesium(Mg)alloy suitable for use in fracturing balls.A comparative analysis was conducted to assess the impacts of adding Cu and Ni,which result in finer grains and the formation of galvanic corrosion *** electronic microscopy examination revealed that precipitated phases concentrated at grain boundaries,forming a semi-continuous network structure that facilitated corrosion penetration in Mg-6Zn-2Cu and Mg-6Zn-2Ni *** corrosion was observed in Mg-6Zn-2Fe,while galvanic corrosion was identified as the primary mechanism in Mg-6Zn-2Cu and Mg-6Zn-2Ni *** the tests,the Mg-6Zn-2Ni alloy exhibited the highest corrosion rate(approximately 932.9 mm/a)due to its significant potential *** testing showed that Mg-6Zn-2Ni alloy possessed suitable ultimate compressive strength,making it a potential candidate material for degradable fracturing balls,effectively addressing the challenges of balancing strength and degradation rate in fracturing applications.

关键词： magnesium alloys microstructure micro-galvanic corrosion mechanical properties

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Purification of water using TiO2/g-C3N5 nanocomposite: A visible light assisted photocatalytic activity

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Zeitschrift fur Physikalische Chemie 2024年第10期238卷 1931-1941页

作者： Chandrasekar, Jayashree Venkatesan, Manikandan Lin, Ja-Hon Kuo, Chi-Ching Institute of Organic and Polymeric Materials Research and Development Center of Smart Textile Technology National Taipei University of Technology Taipei10608 Taiwan Advanced Nanophotonics Technology Lab Department of Electro-Optical Engineering National Taipei University of Technology Taipei10608 Taiwan

Tetracycline hydrochloride (TCN), widely recognized for its broad-spectrum efficacy and cost-effectiveness as an antibiotic, has raised significant environmental and health concerns due to its contamination in water bodies. This study introduces an innovative approach to address this issue by employing a titanium dioxide/graphitic carbon nitride (TiO2/g-C3N5) nanocomposite through photocatalysis. The synthesis of this composite involved a hydrothermal method, and a comprehensive characterization was conducted using XRD, FT-IR, and SEM techniques. The formed heterojunction between TiO2 and g-C3N5 exhibited remarkable photocatalytic degradation capabilities, achieving a removal rate of over 85% within a short period of 135min. This signifies the composite's efficiency in breaking down TCN in aqueous environments. Beyond its high effectiveness, the TiO2/g-C3N5 nanocomposite presents itself as an environmentally friendly and sustainable solution for addressing the critical issues associated with antibiotic contamination in water. This study underscores the potential of photocatalysis using TiO2/g-C3N5 as a promising technology for mitigating the adverse effects of TCN on both ecosystems and human health. © 2024 Walter de Gruyter GmbH, Berlin/Boston.

关键词： Titanium dioxide

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A Three-Dimensional SPH Simulation of Lander Footpad Impact on a Lunar Regolith Bed

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Computer Modeling in Engineering & Sciences 2025年第2期142卷 2045-2066页

作者： Wanqing Yuan Huiying Xie Can Huang Xiaoliang Wang Qingquan Liu Department of Mechanics School of Aerospace EngineeringBeijing Institute of TechnologyBeijing100081China Institute of Computational Aerodynamics China Aerodynamics Research and Development CenterMianyang621000China Institute of Large Structures for Advanced Industrial Equipment Beijing Institute of TechnologyZhuhai519088China

Landing spacecraft experience significant impact forces during landing,resulting in large deformation and failure in the soil surface,which severely affects landing safety and *** paper establishes a smoothed particle hydrodynamics(SPH)model based on the theory of soil elastoplastic constitutive relations to describe the process of a lander’s footpad impacting lunar regolith *** model can provide engineering indices such as impact load and penetration depth,and illustrate the large deformation and crater characteristics of the regolith.A detailed analysis of the response of the footpad and lunar regolith during landing reveals that the process can be broadly divided into two stages of rapid penetration and oscillatory ***,there are significant similarities in the landing process under different landing velocities and footpad *** research investigates the large deformation and crater characteristics of the lunar regolith *** results demonstrate two failure modes in the *** the impact of a footpad with a smaller mass,the final failure surface of the regolith exhibits a bowl-shaped profile with a uniformly open *** contrast,under the impact of a footpad with a larger mass,the final failure surface of the regolith presents an urn-shaped profile with a large abdomen and a small ***,the impact craters in both scenarios show a bowl-like *** cases of high-velocity impacts,the impact crater exhibits obvious blocky spalling on its *** SPH model developed in this study can be applied to predict the large deformation and failure response of lunar soil under the impact of rigid structures as well as the impact load and penetration *** effectively predicts the dynamic response of the landing process,which is expected to provide a reference for engineering design.

关键词： SPH footpad load lunar regolith impact crater

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Japanese-To-english simultaneous dubbing prototype 61

Japanese-To-english simultaneous dubbing prototype

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61st Annual Meeting of the Association for Computational Linguistics, ACL-DEMO 2023

作者： Wang, Xiaolin Utiyama, Masao Sumita, Eiichiro Advanced Translation Research and Development Promotion Center National Institute of Information and Communications Technology Japan

ISBN: (纸本)9781959429708

Live video streaming has become an important form of communication such as virtual conferences. However, for cross-language communication in live video streaming, reading subtitles degrades the viewing experience. To address this problem, our simultaneous dubbing prototype translates and replaces the original speech of a live video stream in a simultaneous manner. Tests on a collection of 90 public videos show that our system achieves a low average latency of 11.90 seconds for smooth playback. Our method is general and can be extended to other language pairs. © ACL-DEMO 2023. All rights reserved.

关键词： Video streaming

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How Fatigued Could the Pilot be? Fatigue Levels Through PVT and Physiological Indications 43

How Fatigued Could the Pilot be? Fatigue Levels Through PVT ...

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43rd AIAA DATC/IEEE Digital Avionics Systems Conference, DASC 2024

作者： Tokadli, Güliz Woodruff, Katharine Wu, Peggy Matthews, Cheyenne Collins Aerospace Advanced Technology Development WilsonvilleOR United States Collins Aerospace Advanced Technology Development Cedar RapidsIA United States Rtx Research Center Artificial Intelligence East HartfordCT United States

ISBN: (纸本)9798350349610

Pilots can feel drowsiness, fatigue, and inattention while performing their duty. The increased operation durations, especially during monotonous tasks such as long-haul flights can cause pilots to experience fatigue, decreasing their performance and attention over time. Various physiological measures can provide indications about these pilot states. This work aims formulate fatigue levels using reaction time and physiological measures. An IRB-approved within-subject experiment was conducted to collect data from fatigued participants. During experimental tasks, an electrooculography (EOG) sensor was used to collect eye movement data as well as Psychomotor Vigilance Task (PVT) was used for measuring the reaction times of the participants. The PVT reaction times, blink duration and blink rate were analyzed using multivariate ANOVA, two sample t-tests, and quantile regression. The statistical tests led to define fatigue levels based on PVT and blink metrics. The PVT scores with significant differences are used to define four preliminary fatigue levels. EOG blink rate and blink duration variables showed similar trend with PVT results to confirm the four levels of fatigue state. © 2024 IEEE.

关键词： Electrooculography

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