检索结果-内蒙古大学图书馆

Designing high-area-loading lithium metal batteries with in-situ polymerized electrolyte featuring gradient molar mass

引用

Journal of Energy Chemistry 2025年第4期103卷 383-392页

作者： Mengjun Sun Zhi Wang Zhe Sheng Xiang Zhen Juhui Jiang Xiaobing Wang Jia Xie School of Chemistry and Chemical Engineering Henan Normal University State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology

In-situ polymerized solid-state lithium metal batteries have garnered significant attention due to their conformal interface contact and continuous pathways for lithium ion（Li+） ***,their electrochemical performance is often hindered by slow Li+transport within high-area-loading *** study presents an in-situ poly（ε-caprolactone） electrolyte with gradient molar mass（iGPCE） through lithium metal anode（LMA）-induced anionic ring-opening *** electrochemical and kinetic analyses reveal that the iGPCE,characterized by low molar mass（M）,significantly enhances Li+diffusion within high-area-loading cathodes and bulk electrolytes,thereby reducing concentration polarization and promoting uniform electrochemical ***,the high M region on LMA side acts as artificial solid electrolyte interphases,stabilizing the stripping and plating of ***,Li//LFP(20 mg cm-2) and Li//NCM622(7.4 mg cm-2) utilizing iGPCE exhibit stable charge/discharge *** study offers a fresh approach to accelerate Li+diffusion kinetics of high-area-loading batteries and suggests broad applicability in other systems.

关键词： Fast Li+ transport kinetics Gradient molar mass High-area-loading cathode In-situ polymerization Lithium metal batteries

来源：评论

学校读者我要写书评

暂无评论

Dynamic Analysis of Uniformity and Difference for Grid-following and Grid-forming Voltage Source Converters Using Phasor and Topological Homology Methods

引用

Journal of Modern Power Systems and Clean Energy 2025年第1期13卷 3-14页

作者： Haiyu Zhao Hongyu Zhou Wei Yao Qihang Zong Jinyu Wen State Key Laboratory of Advanced Electromagnetic Technology School of Electrical and Electronics EngineeringHuazhong University of Science and TechnologyWuhan 430074China

Grid-following voltage source converter(GFLVSC)and grid-forming voltage source converter(GFM-VSC)have different dynamic characteristics for active power-frequency and reactive power-voltage supports of the power *** paper aims to clarify and recognize the difference between gridfollowing(GFL)and grid-forming(GFM)frequency-voltage support more intuitively and ***,the phasor model considering circuit constraints is established based on the port circuit equations of the *** is revealed that the voltage and active power linearly correspond to the horizontal and vertical axes in the phasor space referenced to the grid voltage ***,based on topological homology,GFL and GFM controls are transformed and mapped into different *** topological similarity of the characteristic curves for GFL and GFM controls is the essential cause of their *** on the above model,it is indicated that GFL-VSC and GFM-VSC possess uniformity with regard to active power response,type of coupling,and phasor *** differ in synchronization,power coupling mechanisms,dynamics,and active power-voltage operation domain in the quasi-steady *** studies are undertaken on GFL-VSC and GFM-VSC integrated into a four-machine two-area *** results verify that the dynamic uniformity and difference of GFL-VSC and GFM-VSC are intuitively and comprehensively revealed.

关键词： Renewable energy grid-following converter grid-forming converter phasor method topological homology

来源：评论

学校读者我要写书评

暂无评论

Expediting solid electrolyte synthesis: Microwave-assisted wet synthesis of halogen-rich Li-argyrodite

引用

Journal of Energy Chemistry 2025年第5期104卷 527-539页

作者： Suk-Ho Hwang Seung-Deok Seo Dohyun Kim Jung Been Park Sung-Chul Kim Dong-Wan Kim School of Civil Environmental and Architectural Engineering Korea University Advanced Analysis Center Korea Institute of Science and Technology

Li-argyrodites are promising solid electrolytes （SEs） for solid-state Li-ion batteries （SSLBs）,but their large-scale industrial application remains a *** synthesis methods for SEs suffer from long reaction times and high energy *** this study,we present a wet process for the synthesis of halogen-rich argyrodite Li6-aPS5-aCl1+aprecursors (LPSCl1+a-P,a=0–0.7) via an energysaving microwave-assisted *** vibrational heating,we accelerate the formation of Liargyrodite precursor,even at excessive Cl-ion concentration,which significantly shortens the reaction time compared to traditional *** crystallization,we successfully synthesize the Liargyrodite,Li5.5PS4.5Cl1.5,which exhibits the superior ionic conductivity (7.8 mS cm-1) and low activation energy （0.23 eV） along with extremely low electric *** Li5.5PS4.5Cl1.5exhibits superior Li compatibility owing to its high reversible striping/plating ability （over 5000 h） and high current density acceptability (1.3 mA cm-2).It also exhibits excellent cycle reversibility and rate capability with NCM622 cathode (148.3 mA h g-1at 1 C for 100 cycles with capacity retention of 85.6%).This finding suggests a potentially simpler and more scalable synthetic route to produce high-performance SEs.

关键词： Li-argyrodite Scalable Solid-state batteries Sulfide solid electrolyte Superionic conductor Wet-chemical synthesis

来源：评论

学校读者我要写书评

暂无评论

Improvement and correction for transverse emittance diagnosis based on Q-scanning techniques

引用

Nuclear Science and Techniques 2025年第3期36卷 1-11页

作者： Yi-Feng Zeng Hao Hu Tong-Ning Hu State Key Laboratory of Advanced Electromagnetic Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074China

Precise transverse emittance assessment in electron beams is crucial for advancing high-brightness beam *** opposed to intricate methodologies that use specialized devices,quadrupole focusing strength scanning(Q-scanning)techniques offer notable advantages for various injectors owing to their inherent convenience and ***,their stringent approximation conditions lead to inevitable errors in practical operation,thereby limiting their widespread *** study addressed these challenges by revisiting the analytical derivation procedure and investigating the effects of the underlying approximation *** corrections were explored through a combination of data processing analysis and numerical ***,based on theoretical derivations,virtual measurements using beam dynamics calculations were employed to evaluate the correction *** experimental validations were performed at the Huazhong University of Science and technology injector to verify the effectiveness of the proposed compensation *** the virtual and experimental results confirm the feasibility and reliability of the enhanced Q-scanning-based diagnosis for transverse emittance in typical beam injectors operating under common *** the integration of these corrections and compensations,enhanced Q-scanning-based techniques emerge as promising alternatives to traditional emittance diagnosis methods.

关键词： Beam diagnostics Transverse emittance Q-scanning technique Beam injector

来源：评论

学校读者我要写书评

暂无评论

Deciphering and overcoming the high-voltage limitations of halide and sulfide-based all-solid-state lithium batteries

引用

Journal of Energy Chemistry 2025年第4期103卷 926-935页

作者： Xiang Qi Gang Wu Meng Wu Dabing Li Chao Wang Lei Gao Shichao Zhang Li-Zhen Fan Beijing Advanced Innovation Center for Materials Genome Engineering Beijing Key Laboratory for Advanced Energy Materials and Technologies University of Science and Technology Beijing School of Materials Science and Engineering Beihang University

Adopting high-voltage Ni-rich cathodes in halide and sulfide-based all-solid-state lithium batteries（ASSLBs） holds great promise for breaking through the 400 Wh ***,both cell configurations are confronted with intricate interfacial challenges in high-voltage regines（>4.5 V）,resulting in inadequate cathode utilization and premature cell ***,contrary to previous studies,coupled with LiNi0.85Co0.1Mn0.05O2cathodes,typical halide（Li2ZrCl6）-based cells at 4.5 V feature unlimited interfacial degradation and poor long cycle stability,while typical sulfide（Li6PS5Cl）-based cells feature self-limited interfacial degradation and poor initial cycle ***,this work addresses the high-voltage limitations of Li2ZrCl6and Li6PS5Cl catholyte-based cells by manipulating electrode mass fraction and tailoring interfacial composition,thereby effectively improving interfacial charge-transfer kinetics and（electro）chemical stability within *** appropriate interface design,both optimized cells at 4.5 V demonstrate remarkably increased initial discharge capacities(>195 mA h g-1at0.1 C),improved cycle stabilities（>80% after 600 cycles at 0.5 C）,and enhanced rate performances(>115 mA h g-1at 1.0 C).This work deepens our understanding of high-voltage applications for halide/sulfide electrolytes and provides generalized interfacial design strategies for advancing high-voltage ASSLBs.

关键词： All-solid-state lithium batteries Halide solid electrolytes High voltage Interface design Sulfide solid electrolytes

来源：评论

学校读者我要写书评

暂无评论

Temperature fields prediction for the casting process by a conditional diffusion model

引用

China Foundry 2025年第2期22卷 139-150页

作者： Jin-wu Kang Jing-xi Zhu Qi-chao Zhao School of Materials Science and Engineering Key Laboratory for Advanced Materials Processing TechnologyTsinghua UniversityBeijing 100084China

Deep learning has achieved great progress in image recognition,segmentation,semantic recognition and game *** this study,a latest deep learning model,a conditional diffusion model was adopted as a surrogate model to predict the heat transfer during the casting process instead of numerical *** conditional diffusion model was established and trained with the geometry shapes,initial temperature fields and temperature fields at t_(i) as the condition and random noise sampled from standard normal distribution as the *** output was the temperature field at t_(i+1).Therefore,the temperature field at t_(i+1)can be predicted as the temperature field at t_(i) is known,and the continuous temperature fields of all the time steps can be predicted based on the initial temperature field of an arbitrary 2D geometry.A training set with 3022D shapes and their simulated temperature fields at different time steps was *** accuracy for the temperature field for a single time step reaches 97.7%,and that for continuous time steps reaches 69.1%with the main error actually existing in the sand *** effect of geometry shape and initial temperature field on the prediction accuracy was investigated,the former achieves better result than the latter because the former can identify casting,mold and chill by different colors in the input *** diffusion model has proved the potential as a surrogate model for numerical simulation of the casting process.

关键词： diffusion model U-Net casting simulation heat transfer

来源：评论

学校读者我要写书评

暂无评论

Co@C-N as an electronic mediator anchored with Cu2O nanoparticles enables efficient photoreduction of CO2 to CO with nearly 100% selectivity

引用

Science China Chemistry 2025年第5期68卷 2160-2169页

作者： Xingbin Pan Xiuzheng Deng Jingshan Fan Jiangchuan Liu Changhai Liu Zhongyu Li Qian Liang Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology CNPC-CZU Innovation AllianceSchool of Petrochemical EngineeringChangzhou University School of Materials Science & Engineering Changzhou University

Solar-driven CO2conversion into value-added chemical provides an attractive strategy for sustainable ***,the enhanced CO2photoreduction performance with target product selectivity remains a major ***,we develop a novel strategy involving Cu2O nanoparticles in situ grown on the surface of ZIF-67-derived Co@C-N nanocages（CC） to create abundant active sites and appropriate heterointerfaces.A remarkable CO selectivity of 95.7% with a yield of 117.39 μmol g-1h-1and an apparent quantum efficiency as high as 1.88% at 420 nm was obtained over CC-60 catalyst in pure water,which was 87.6 times higher than that of pure *** calculations and experiments indicated that Co@C-N nanocages as charge mediator not only rapidly trap photogenerated electrons to promote charge separation efficiency,but also regulate the d-band center of Cu atoms to move to the Fermi energy level,thereby optimizing the reaction kinetics to facilitate the highly selective conversion of the key intermediate*CO desorption to CO.

关键词： Co nanocage electronic mediator interface regulation photocatalytic CO2 reduction high selectivity

来源：评论

学校读者我要写书评

暂无评论

Multi-Scale Time Series Segmentation Network Based on Eddy Current Testing for Detecting Surface Metal Defects

引用

IEEE/CAA Journal of Automatica Sinica 2025年第3期12卷 528-538页

作者： Xiaorui Li Xiaojuan Ban Haoran Qiao Zhaolin Yuan Hong-Ning Dai Chao Yao Yu Guo Mohammad S.Obaidat George Q.Huang the School of Intelligence Science and Technology University of Science and Technology Beijing the Beijing Advanced Innovation Center for Materials Genome Engineering the Key Laboratory of Intelligent Bionic Unmanned Systems and the Institute of Materials Intelligent Technology Liaoning Academy of Materials IEEE the Department of Computer Science Hong Kong Baptist University the School of Computer and Communication Engineering Key Laboratory of Advanced Materials and Devices for Post-Moore Chips Ministry of Education University of Science and Technology Beijing the Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and Technology Beijing the School of Computer and Communication Engineering University of Science and Technology Beijing the King Abdullah Ⅱ School of Information Technology The University of Jordan the Department of Computational Intelligence the School of Computing SRM University the School of Engineering The Amity University The Hong Kong Polytechnic University

In high-risk industrial environments like nuclear power plants, precise defect identification and localization are essential for maintaining production stability and safety. However, the complexity of such a harsh environment leads to significant variations in the shape and size of the defects. To address this challenge, we propose the multivariate time series segmentation network(MSSN), which adopts a multiscale convolutional network with multi-stage and depth-separable convolutions for efficient feature extraction through variable-length templates. To tackle the classification difficulty caused by structural signal variance, MSSN employs logarithmic normalization to adjust instance distributions. Furthermore, it integrates classification with smoothing loss functions to accurately identify defect segments amid similar structural and defect signal subsequences. Our algorithm evaluated on both the Mackey-Glass dataset and industrial dataset achieves over 95% localization and demonstrates the capture capability on the synthetic dataset. In a nuclear plant's heat transfer tube dataset, it captures 90% of defect instances with75% middle localization F1 score.

关键词： Eddy current testing nondestructive testing semantic segmentation time series analysis

来源：评论

学校读者我要写书评

暂无评论

Rapid system prototype-based physical simulation platforms for power systems with high penetration of inverter-based resources

引用

High Voltage 2025年第1期10卷 3-16页

作者： Wei Yao Yimin Ruan Yuying Chen Hongyu Zhou Jinyu Wen Meng Zhou Wenping Zuo State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhanChina GridMind Technology(Wuhan)Co. LtdWuhanChina

The traditional power system dominated by synchronous generators is gradually evolving into a power system with high penetration of inverter-based resources(IBRs).In this paper,the new characteristics that arise from the high penetration of IBRs in power systems are *** light of these characteristics,current simulation technologies are inadequate and new requirements for the simulation platforms have been *** response,this paper introduces the rapid system prototype(RSP)-based physical simu-lation platforms,which include the digital simulator,the rapid prototype controller,and the rapid object-controlled *** addresses the time-consuming and labour-intensive shortcomings of traditional simulation techniques and meets the rapid evolu-tion needs of the power system with high penetration of *** with existing simulation platforms,RSP is a more suitable platform for the physical simulation of power systems with high penetration of *** the modular multilevel converter-based high-voltage direct current as a case study,a novel physical simulation platform for power systems based on RSP is *** results demonstrate that the RSP concept and technology can establish an enterprise-level simulation environment and engineering practice ***,it can provide realistic and flexible simu-lations of various characteristics of power systems with high penetration of IBRs.

关键词： system power inverter

来源：评论

学校读者我要写书评

暂无评论

Excellent high-temperature strength of(HfZrTiTaNb)C high-entropy carbide diffusion-bonded joint via in-situ alloying of Ni/Nb/Ni composite interlayer

引用

Journal of advanced Ceramics 2025年第1期14卷 127-133,136-139页

作者： Ruijie Mu Ying Wang Shiyu Niu Kongbo Sun Zhenwen Yang Tianjin Key Laboratory of Advanced Joining Technology School of Materials Science and EngineeringTianjin UniversityTianjin 300350China Key Laboratory of Advanced Ceramics and Machining Technology Ministry of EducationTianjin 300350China

To obtain high-entropy carbide(HEC)joints with excellent high-temperature performance,a(HfZrTiTaNb)C HEC joint featuring a direct diffusion-bonded interface with a Nb-based interlayer was successfully fabricated at relatively low temperatures of 1150–1250℃for 60 min under 10 *** from a modified Ni/Nb/Ni composite interlayer with a Nb content of>64 at%,an alloyed Nb_(2)Ni layer was constructed in situ by accelerating the directional diffusion of Ni atoms from the high-entropy interface into the remaining pure Nb through the Ni‒Nb eutectic ***,the excess liquid phase was squeezed out of the bonding region,ensuring the absence of Ni-based *** the intrinsic interfacial stability and sluggish diffusion effect,the HEC with its original lattice structure,was capable of developing diffusion bonding with the Nb_(2)Ni layer instead of interacting with the liquid *** high reliability of the HEC/Nb_(2)Ni bonded interface was confirmed by the coherence of(11¯3)_(HEC)//(141)_(Nb_(2))Ni and a calculated lattice misfit of *** HEC joint had a high room-temperature strength of 174 MPa because of the homogenous Nb_(2)Ni layer,which exhibited nanohardness(15.2±1.5 GPa)and an elastic modulus of 219.9±17.5 ***,the strength of the HEC joint did not decrease at 1000℃,increasing by~49%over that of HEC/Ni/HEC diffusion-bonded joints,which have stringent surface flatness *** suggested that the HEC/Nb_(2)Ni interface had excellent resistance to high-temperature softening,even though it was invariably the initial failure *** work is informative for designing bonding structures and preparing HEC components.

关键词： high-entropyceramic diffusion bonding in situ alloyed interlayer mechanical properties

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：