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Manganese-based oxides cathodes for potassium-ion batteries: a review

Journal of Energy Chemistry 2025年 108卷 1-18页

作者： Yue, Qinggang Xia, Maoting Zhou, Jiang Cheng, Juanjuan Lu, Bingan School of Physics and Electronics Hunan University Hunan Changsha410082 China State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body Hunan University Hunan Changsha410082 China School of Materials Science and Engineering and Key Laboratory of Nonferrous Metal Materials Science and Engineering Ministry of Education Central South University Hunan Changsha410083 China School of Materials Science and Engineering Hunan Provincial Key Lab of Advanced Materials for New Energy Storage and Conversion Hunan University of Science and Technology Hunan Xiangtan411201 China

Potassium-ion batteries (PIBs) were recognized for their natural abundance, high theoretical output voltage, and the availab.lity of commercialized graphite anodes. However, the development of high-performance manganese-based layered oxide cathodes—a leading candidate for PIB systems—has been fundamentally constrained by irreversible phase transitions (PT) during the cycling process, manifesting as severe structural degradation and capacity fading. This review presents a transformative paradigm integrating machine learning (ML) with multiscale characterization to analyse the complex phase transition mechanisms in Mn-based cathodes. Through systematic ML-driven interrogation of structure–property relationships, we establish quantitative descriptors for phase stability and develop predictive models for transition dynamics. Furthermore, we highlight recent breakthroughs in cross-disciplinary approaches, enabling the rational design of PT-mitigated cathode architectures. By consolidating these insights into a unified knowledge framework, this work provides strategic guidelines for developing structurally robust Mn-based cathodes and outlines future research directions for next-generation PIB systems. © 2025 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences.

关键词： Setting

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High-precision prediction of micro-displacement of workpiece using I-ResNet50V2 and dual-laser composite imaging

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Measurement Science and technology 2025年第5期36卷

作者： Lu, Enhui Ji, Rukun Ding, Feiyang Chen, Ronghua Zhang, Shanwen Zhu, Xinglong Miu, Hong School of Mechanical Engineering Yangzhou University Yangzhou225127 China State Key Laboratory of Advanced Design and Manufacture for Vehicle Body Hunan University Changsha410082 China School of Environmental Engineering Newcastle University Tyne and Wear Newcastle upon TyneNE1 7RU United Kingdom Jiangsu College Key Laboratory of Non-traditional Machining College of Mechanical Engineering Changzhou Institute of Technology Changzhou213032 China

Monocular laser vision systems and machine learning-based micro-displacement measurement methods face critical limitations in feature representation accuracy and computational efficiency. Existing approaches rely on manually designed image metrics or suffer from excessive model complexity, leading to compromised precision and low computational efficiency. To address these challenges, we propose a lightweight deep learning framework integrating an optimized ResNet50V2 architecture with dual-laser composite imaging. key innovations include: A structurally enhanced ResNet50V2 network that reduces parameters through depthwise separable convolutions and multi-scale feature extraction, while improving displacement-sensitive feature learning;A dual-laser imaging system that enhances robustness through adaptive fusion of complementary laser patterns. Experimental results demonstrate a measurement error below 0.07 mm with merely 12.98 million parameters, outperforming conventional machine learning methods in both precision and computational efficiency. The proposed system provides a cost-effective solution for high-precision micro-displacement measurement in resource-constrained industrial applications. © 2025 IOP Publishing Ltd. All rights, including for text and data mining, AI training, and similar technologies, are reserved.

关键词： Deep learning

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Broadband acoustic wave suppression via total internal reflection in phase gradient curved metasurfaces

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Smart Materials and Structures 2025年第5期34卷

作者： Huang, Shuzhen Zhang, Lei Wen, Guilin Tham, Zi Wen Yin, Shan Liu, Jie State Key Laboratory of Advanced Design and Manufacture for Vehicle Body Hunan University Hunan Changsha 410082 China Institute of Materials Research and Engineering (IMRE) Agency for Science Technology and Research (A*STAR) 2 Fusionopolis Way Innovis #08-03 Singapore 138634 Singapore School of Mechanical Engineering Yanshan University Hebei Qinhuangdao 066004 China

Vibration suppression remains a persistent challenge in engineering applications. Elastic metasurfaces have emerged as a promising solution, yet many existing designs rely on slotting and narrow-band structures, which compromise structural integrity and limit practical uses. In this work, a surface mounted phased gradient curved metasurface (PGCM) is designed based on the generalized Snell’s law and the theory of total internal reflection for broadband Lamb waves suppression. By adjusting the height of the curved beam, the phase of transmitted Lamb waves can be modulated over a 2π range. The dimensions of the cell structure are optimized through theoretical analysis and numerical simulation. The broadband wave suppression capabilities of the PGCM are thoroughly investigated and experimentally validated. Compared to existing metasurface designs, the PGCM effectively suppresses both normal incident Lamb waves and omnidirectional incident waves. Simulations show a maximum wave suppression of 39.72 dB for normal incidence and 21.34 dB for omnidirectional incidence, with a robust bandwidth effect under both conditions. Experimental results verify the wave suppression performance and bandwidth effect. The structure is simple, cost-effective, and suitable for surface mounting. This work provides an innovative solution for acoustic wave suppression. © 2025 IOP Publishing Ltd. All rights, including for text and data mining, AI training, and similar technologies, are reserved.

关键词： acoustic waves elastic metasurface phase gradient total internal reflection vibration control

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NUMERICAL SIMULATION ANALYSIS OF EXTERNAL FLOW FIELD OF WAGON-SHAPED CAR AT THE MOMENT OF PASSING

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Chinese Journal of Mechanical Engineering 2008年第4期21卷 76-80页

作者： GU Zhengqi HE Yibin ZHOU Wei JIANG Bo State Key Laboratory of Advanced Design and Manufacture for Vehicle Body Hunan University Changsha 410082 China Hunan Province Institute of Science ＆ Technology Changsha 410004 China

In the course of studying on aerodynamic change and its effect on steering stability and controllab.lity of an automobile in passing, because of multi interaction streams, it is difficult to use traditional methods, such as wind tunnel test and road test. If the passing process of an automobile is divided into many time segments, so as to avoid the use of moving mesh which takes large calculation resource and CPU processing time in calculating, the segments are simulated with computational fluid dynamics （CFD） method, then the approximate computational results about external flow field will be obtained. On the basis of the idea, the change of external flow field of wagon-shaped car at the moment of passing is simulated through solving three-dimensional, steady and uncompressible N-S equations with finite volume method. Numerical simulation analysis of side force coefficient, stream lines, body surface pressure distribution of wagon-shaped car are presented and a preliminary discussion of aerodynamic characteristics of correlative situations is obtained. Finally, the C3 -x/l curve of side force coefficient（C3） of car following relative distance （x/l） between cars is obtained. By comparison, the curve is coincident well with the experimental data, which shows creditability of numerical simulation methods presented.

关键词： External flow field Passing Numerical simulation Side force coefficient

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Electric and magnetic dipole couplings in split ring resonator metamaterials

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Chinese Physics B 2011年第11期20卷 222-227页

作者：樊京孙光永朱卫仁 Department of Electronics and Electrical Engineering Nanyang Institute of Technology State Key Laboratory of Advanced Design and Manufacture for Vehicle Body Hunan University Department of Applied Physics Northwestern Polytechnical University

In this paper, the electric and the magnetic dipole couplings between the outer and the inner rings of a single split ring resonator （SRR） are investigated. We numerically demonstrate that the magnetic resonance frequency can be substantially modified by changing the couplings of the electric and magnetic dipoles, and give a theoretical expression of the magnetic resonance frequency. The results in this work are expected to be conducive to a deeper understanding of the SRR and other similar metamaterials, and provide new guidance for complex metamaterials design with a tailored electromagnetic response.

关键词： metamaterials split ring resonator coupling

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Research and Optimization of Crashworthiness in Small Overlap Head-on Collision

Research and Optimization of Crashworthiness in Small Overla...

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The 10th Int. Forum of Automotive Traffic Safety(INFATS)

作者： Xiao Sen Yang Jikuang Zhong Zhihua State Key Lab of Advanced Design and Manufacture for Vehicle Body Hunan University Dept of Applied Mechanics Chalmers University of Technology

ISBN: (纸本)9781467356527

To achieve the purpose of studying structure crashworthiness in small overlap collision, simulations were analyzed by Finite Element Method according to IIHS (The Insurance Institute for Highway Safety) regulations. design of experiment was applied to analyze the sensitivity of each variable, and optimal design was carried out by means of approximation model technology and reliability optimizing design based on monte-carlo simulation technique in the aspects of improving crashworthiness and reducing weight. The result shows that upper rails are the main energy-absorbing parts in small overlap crash. The major factors affecting the safety in small overlap rate collision were determined through the analysis of sensitivity. By contrasting the reliability optimization with the certainty optimization of vehicles, the influence of fluctuation of design variables on quality of product was analyzed. It can be concluded that the reliability optimization is obviously superior to deterministic optimization, which is of great practical application value in engineering.

关键词： Small Overlap Collision Sensitivity Analysis Deterministic Optimization Reliability Optimization

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Additively manufactured fiber-reinforced composites:A review of mechanical behavior and opportunities

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Journal of Materials Science & technology 2022年第24期119卷 219-244页

作者： Jiahui Li Yvonne Durandet Xiaodong Huang Guangyong Sun Dong Ruan Department of Mechanical Engineering and Product Design Engineering School of EngineeringSwinburne University of TechnologyHawthornVIC 3122Australia State Key Laboratory of Advanced Design and Manufacture for Vehicle Body Hunan UniversityChangsha 410082China

Recent developments in additive manufacturing techniques have facilitated the fabrication of fiberreinforced composite *** this paper,the mechanical properties and deformation mechanisms of discontinuous and continuous fiber-reinforced composites fabricated by various additive manufacturing techniques are comprehensively *** effects of fiber type,orientation and weight/volume fraction,printing path,and stacking sequence on the mechanical properties of additively manufactured composites are *** addition,the applications of additively manufactured composites,the main challenges of the current additive manufacturing techniques,and recommendations for future work are also presented.

关键词： Additive manufacturing Discontinuous and continuous fiber-reinforced composites Mechanical properties Deformation mechanism Applications

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A Study on the Application of Energy-dissipating Protection Device in Car-to-Truck Rear Underride

A Study on the Application of Energy-dissipating Protection ...

引用

The 10th Int. Forum of Automotive Traffic Safety(INFATS)

作者： Lu XUE Jikuang YANG State Key Laboratory of Advanced Design and Manufacture for Vehicle Body Department of Applied Mechanics Chalmers University of Technology

ISBN: (纸本)9781467356527

A passenger car is severely damaged in car-to-truck underride accident which threatens the lives in the passenger car seriously. The objective of the study is to develop an energy-dissipating rear underride protection device (RUPD) for diminishing the hazard imposed on the passenger car and the occupants. The new RUPD which has energy- dissipating structure is designed. It is modeled in virtual environment together with a moving barrier (MB) and a contrastive common RUPD. Finite element simulation is performed for comparative analysis on the performance of the two RUPDs in LS-DYNA. In the virtual test, the MB crashes into the two RUPDs respectively according to the national standard GB11567.2-2001. The conditions of 54km/h crash speed and offset collision form are added to the virtual test for further test. The results show that under the national standard condition, the new RUPD dissipates 77% of the total crash energy and the MB's acceleration peak in the test of the new RUPD is 22.8g, which is 40% lower than that in the test of the common one. In the extension virtual tests, the new RUPD performs effectively in buffering, energy dissipating and underride protecting.

关键词： RUPD underride LS-DYNA

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Dynamic analysis of a vehicle with leaf spring based on the hysteresis model

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Inderscience Publishers 2018年第3期4卷 282-304页

作者： Zhang, Jie Zou, Gaoyuan Zhang, Nong Zheng, Minyi Zhang, Bangji Zhang, Liqin State Key Laboratory of Advanced Design and Manufacture for Vehicle Body Hunan University Changsha410082 China School of Automotive and Transportation Engineering Hefei University of Technology Hefei230009 China

Leaf spring is an important elastic component of suspension systems and their hysteretic characteristics can affect the vehicle’s performance. Thus, the hysteretic behaviour of leaf spring needs to be accurately modelled in the vehicle suspension model. In the paper, a nonlinear model (Bouc–Wen model) of leaf springs is employed to describe the hysteresis induced by inter-friction between the leaves of leaf springs. The results illustrate that this proposed model can predict the restoring forces under the load test well. A numerical simulation has been carried out to show the effectiveness of this method. The Bouc–Wen model has a satisfactory expression accuracy for presenting the restoring force of leaf spring compared to the FEA model. The vehicle model with leaf spring based on the Bouc–Wen model is also developed to study the effect of hysteresis nonlinearity on the ride comfort in this paper. Copyright © 2018 Inderscience Enterprises Ltd.

关键词： Hysteresis

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Structural analysis and topology optimization design for a sweeper vehicle frame

Structural analysis and topology optimization design for a s...

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International Conference on Computer-Aided Industrial design and Conceptual design, CAIDCD

作者： Bing, Zhou Wu, Chonghui Li, Wei-Ping State Key Laboratory of Advanced Design and Manufacture for Vehicle Body Institute of Space Technology Hunan University Changsha China

ISBN: (纸本)9781424479719

To improve the mechanical performance and reduce the weight of a sweeper vehicle frame, a finite element model for a dump sweeper vehicle frame is established to analyze strength stiffness and modal of vehicle. By using Ls-dyna software, displacement and time curve for vehicle rectangular frame under external force incentives is solved. Based on the analysis results, topological optimization is carried out to reduce the use of material and improve the stiffness and dynamic characters of the frame. Optimization results show that static strength of vehicle frame satisfies working requirements, the rough road and idling speed will not make the frame resonate. © 2010 IEEE.

关键词： vehicles

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