检索结果-内蒙古大学图书馆

Probing Interfacial Nanostructures of Electrochemical Energy Storage Systems by In-Situ Transmission Electron Microscopy

引用

Nano-Micro Letters 2025年第1期17卷 1-29页

作者： Liang, Guisheng Zhang, Chang Yang, Liting Liu, Yihao Liu, Minmin Xiong, Xuhui Yang, Chendi Lv, Xiaowei You, Wenbin Pei, Ke Zhong, Chuan-Jian Cheng, Han-Wen Che, Renchao Laboratory of Advanced Materials Shanghai Key Lab of Molecular Catalysis and Innovative Materials Department of Materials Science Academy for Engineering and Technology Fudan University Shanghai200438 China Department of Chemistry State University of New York at Binghamton BinghamtonNY13902 United States

The ability to control the electrode interfaces in an electrochemical energy storage system is essential for achieving the desired electrochemical performance. However, achieving this ability requires an in-depth understanding of the detailed interfacial nanostructures of the electrode under electrochemical operating conditions. In-situ transmission electron microscopy (TEM) is one of the most powerful techniques for revealing electrochemical energy storage mechanisms with high spatiotemporal resolution and high sensitivity in complex electrochemical environments. These attributes play a unique role in understanding how ion transport inside electrode nanomaterials and across interfaces under the dynamic conditions within working batteries. This review aims to gain an in-depth insight into the latest developments of in-situ TEM imaging techniques for probing the interfacial nanostructures of electrochemical energy storage systems, including atomic-scale structural imaging, strain field imaging, electron holography, and integrated differential phase contrast imaging. Significant examples will be described to highlight the fundamental understanding of atomic-scale and nanoscale mechanisms from employing state-of-the-art imaging techniques to visualize structural evolution, ionic valence state changes, and strain mapping, ion transport dynamics. The review concludes by providing a perspective discussion of future directions of the development and application of in-situ TEM techniques in the field of electrochemical energy storage systems. (Figure presented.) © The Author(s) 2025.

关键词： Nanocomposites

来源：评论

学校读者我要写书评

暂无评论

Recent progress on photoactive nonprecious transition-metal complexes

引用

Science China Chemistry 2025年第1期68卷 46-95页

作者： Zhong-Liang Gong Hong-Jie Zhang Yan Cheng Jianxun Liu Yuhan Ai Yaqin Li Zhihui Feng Qiong Zhang Shaolong Gong Yong Chen Chang-Jiang Yao Yuan-Yuan Zhu Liang-Jin Xu Yu-Wu Zhong CAS Key Laboratory of Photochemistry Institute of ChemistryChinese Academy of SciencesBeijing 100190China State Key Laboratory of Structural Cemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China School of Chemistry and Chemical Engineering Anhui Key Laboratory of Advanced Catalytic Materials and Reaction EngineeringHefei University of TechnologyHefei 230009China State Key Laboratory of Explosion Science and Safety Protection School of Mechatronical EngineeringBeijing Institute of TechnologyBeijing 100081China College of Chemistry and Molecular Sciences Hubei Key Lab on Organic and Polymeric Optoelectronic MaterialsWuhan UniversityWuhan 430072China School of Chemistry and Chemical Engineering Anhui UniversityHefei 230601China Key Laboratory of Photochemical Conversion and Optoelectronic Materials&CAS-HKU Joint Laboratory on New Materials Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China

Photoactive complexes of nonprecious transition metals,mainly including those in the first-row and partially the second-row of the Periodic table of elements,have received increasing attention in view of their low cost and long-term *** are recognized as promising alternatives to noble transition metal complex congeners that have been extensively studied in optoelectronic devices,artificial photosynthesis,photocatalysis,biodiagnostics,and therapeutics,*** review is devoted to a comprehensive summary on the classical and recent advances on photoactive nonprecious transition metal complexes,including photoactive Zr,V,Cr,Mo,and W complexes,Mn complexes and hybrids,Fe,Co,Ni,and Cu complexes,and Zn and Cd complexes and hybrids.A particular focus is given on the molecular design,modulation of photophysical and photochemical properties,and applications of the representative and lately-developed nonprecious metal *** addition,a perspective on the future development in this field is provided at the end of this review.

关键词： photoactive metal complexes earth-abundant metals nonprecious metal complexes luminescence photochemistry

来源：评论

学校读者我要写书评

暂无评论

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

引用

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 availability 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

来源：评论

学校读者我要写书评

暂无评论

Improved surface hydrophobicity of self-assembled transport layers enables perovskite/silicon tandem solar cells with efficiency approaching 31%

引用

Journal of Energy Chemistry 2025年第5期104卷 749-755页

作者： Jing Yang Jin Wang Biao Shi Yixin Dong Dongxue Liu Shenhzhi Xu Qian Huang Xiaona Du Fu Zhang Miao Yang Yongcai He Bo He Xiaoning Ru Shengzhong Liu Xixiang Xu Pengyang Wang Ying Zhao Xiaodan Zhang Institute of Photoelectronic Thin Film Devices and Technology Renewable Energy Conversion and Storage CenterState Key Laboratory of Photovoltaic Materials and CellsNankai UniversityTianjin 300350China Three Gorges Corporation Science and Technology Research InstituteBeijing 101199China Tianjin Key Laboratory of Efficient Utilization of Solar Energy Tianjin 300350China Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192China Engineering Research Center of Thin Film Photoelectronic Technology of Ministry of Education Tianjin 300350China Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) Tianjin 300072China Key Laboratory of Applied Surface and Colloid Chemistry Ministry of EducationShaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Lab for Advanced Energy TechnologySchool of Materials Science and EngineeringShaanxi Normal UniversityXi’an 710119ShaanxiChina LONGi Central R&D Institute LONGi Green Energy Technology Co.Ltd.Xi’an 710018ShaanxiChina

[4-(3,6-dimethyl-9H-carbazol-9-yl)butyl]phosphonic acid(Me-4PACz)self-assembled monolayer(SAM)as the hole transport materials have been demonstrated remarkable potential in perovskite solar cells(PSCs).However,the hydrophobicity of Me-4PACz presents a critical challenge for the fabrication of high-quality perovskite films due to its poor ***,a doped Al_(2)O_(3)with Me-4PACz to modify the Me-4PACz surface was *** one hand,this approach improved the wettability of the Me-4PACz film,enhancing the coverage,uniformity,and buried interface properties of the perovskite *** the other hand,compared to Al_(2)O_(3)modification alone,doping Al_(2)O_(3)with Me-4PACz allowed direct contact between the perovskite and Me-4PACz,resulting in better buried interface *** a result,we achieved an efficiency of 22.71%for single-junction wide-bandgap perovskite solar cells(1.68 eV).Additionally,the efficiency of perovskite/silicon tandem solar cells was improved from 28.68%to 30.92%,with a significant reduction in ***,the tandem cells demonstrated no degradation after 4200 s of operation at the maximum power point.

关键词： Me-4PACz Tandem solar cell Perovskite/silicon Hydrophic

来源：评论

学校读者我要写书评

暂无评论

Design and Experimental Study of a Toroidal Winding Flywheel Energy Storage Motor

引用

IEEE Transactions on Energy Conversion 2025年

作者： Ye, Caiyong Yao, Kexin Liu, Yi Cao, Guangdong Qi, Xiaodong Li, Zhixin Huazhong University of Science and Technology State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Wuhan430074 China Naval University of Engineering College of Electrical Engineering Wuhan430074 China

Design cost and bearing stability have always been a challenge for flywheel energy storage system (FESS). In this study, a toroidal winding flywheel energy storage motor is designed for low and medium speed occasions, aiming to meet the challenges of conventional high-speed flywheel energy storage motors in terms of process cost and control difficulty. Firstly, the research motivation of this paper is introduced by analyzing the traditional high-speed flywheel energy storage motor structure and its problems. Secondly, the hybrid shaft-bearing system is established to improve the stability of shaft control and reduce maintenance costs. The magnetic equivalent circuit (MEC) of the axial magnetic bearing (AMB) is created to simplify the design and radial mechanical bearing (RMB) life is analyzed. Besides, comparing different rotor and winding structures, an interior permanent magnet motor (IPM) and toroidal winding (TW) scheme is proposed to reduce production costs and increase the critical speed of the flywheel rotor. Fourthly, the performance indexes of the TW flywheel energy storage motor, such as rotor static, losses, temperature rise and electromagnetic vibration are analyzed by the FEA. Finally, a 10kW-3MJ prototype is manufactured and tested. The experiment verifies the rationality of the concept and design. This article provides reference for the design and optimization of flywheel energy storage motors in low and medium speed occasions, which has certain theoretical and practical application significance. © 1986-2012 IEEE.

关键词： Flywheels

来源：评论

学校读者我要写书评

暂无评论

Study on the Characteristics and Mechanism of Discharge Degradation Products of Epoxy Resin Matrix in Composite Insulators Under Humid Air Environment 19th

Study on the Characteristics and Mechanism of Discharge Degr...

引用

19th Annual Conference of China Electrotechnical Society, ACCES 2024

作者： Zhiyu, Wan Dandan, Zhang Chao, Gao Ming, Lu Hui, Li Zhenbiao, Li Kexin, Shi School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan430074 China Ministry of Education Wuhan430074 China State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology Wuhan430074 China Henan Key Laboratory of Power Transmission Line Galloping Prevention and Control Technology State Grid Henan Electric Power Research Institute Zhengzhou450052 China Henan Jiuyu EPRI Electric Power Technology Co. Ltd. Zhengzhou450052 China

ISBN: (纸本)9789819613823

The degradation of the epoxy resin matrix in the core rods of composite insulators is the primary factor leading to decay-like deterioration and fracture accidents. Partial discharge in a humid environment is a critical trigger for this phenomenon. As an organic polymer, epoxy resin is prone to degradation under discharge, producing complex degradation products that can have secondary effects on surrounding materials, further accelerating the decay-like deterioration process. To optimize the formulation and manufacturing process of composite insulator materials and mitigate or even prevent decay-like fractures, it is crucial to study the discharge degradation products and mechanisms of the epoxy resin matrix. In this study, discharge experiments were conducted on anhydride-cured bisphenol A epoxy resin used in composite insulators within a closed humid environment. Changes in chemical functional groups of solid samples before and after discharge were analyzed from the high-frequency region to the fingerprint region. The main components and relative yields of liquid and gaseous discharge products were detected, and the primary reaction mechanisms during the discharge degradation process were thoroughly investigated. Results indicate that partial discharge in humid air induces instantaneous temperature rise and radical action, leading to epoxy resin degradation, generating alcohols and hydroxyl groups, which may increase the material’s hydration capacity and surface conductivity, thereby reducing electric field uniformity. Gaseous products such as methane, acetone, ethylene, and ethyl acetate produced by discharge pyrolysis may exacerbate stress at the core rod and sheath interface, increasing the risk of interfacial damage. Liquid products like nitric acid, carboxylic acids, and acetone may accelerate glass fiber fracture and sheath swelling. © Beijing Paike Culture Commu. Co., Ltd. 2025.

关键词： Partial discharges

来源：评论

学校读者我要写书评

暂无评论

Stabilizing zinc anodes with robust interfacial layer at bending states toward flexible zinc batteries

引用

Nano Research 2025年第3期18卷 252-262页

作者： Jianyu Chen Yuwei Zhu Fanlai Zhang Yizhou Wang Wendi Xu Yu Zhang Li Shi Xing Qiang Yanwen Ma Jin Zhao State Key Laboratory of Flexible Electronics(LoFF)&Institute of Advanced Materials(IAM) Nanjing University of Posts&TelecommunicationsNanjing 210023China Materials Science and Engineering King Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Saudi Arabia New Energy Technology Engineering Lab of Jiangsu Province School of ScienceNanjing University of Posts&TelecommunicationsNanjing 210023China Jiangsu Materials Research Society Nanjing 210003China Suzhou Vocational Institute of Industrial Technology Suzhou 215104China

Flexible energy storage plays a crucial role in the field of flexible electronics,because it provides the energy supply,and its technological advancement directly affects the performance and application scope of flexible *** an important flexible energy storage technology member,aqueous zinc(Zn)ion batteries(AZIBs)have garnered considerable attention due to their high safety and low ***,the development of flexible AZIBs is hindered by Zn metal anodes(ZMAs),where Zn is prone to growing into dendritic structures,especially in a curved state,and thus leads to battery ***,we design a robust interfacial layer(RIL)for stabilizing ZMAs in flexible AZIBs,whose introduction constructs uniform Zn ion channels and releases stress accumulation on the anode *** experiments and calculations are employed to verify the effectiveness of RIL in suppressing Zn dendrite at bending ***,a Zn|MnO_(2)flexible pouch battery with RIL is demonstrated with stable cycling performance during *** believe this study provides new possibilities for regulating Zn deposition under bending conditions and extends its application to flexible wearable aqueous metal batteries.

关键词： aqueous zinc ion batteries(AZIBs) zinc dendrites robust interfacial layer bending states flexible batteries

来源：评论

学校读者我要写书评

暂无评论

A GNN-Guided Variable Selection Approach for Efficient Derivation of the Optimal Solution in Unit Commitment

引用

IEEE Transactions on Power Systems 2025年

作者： Wei, Lishen Ai, Xiaomeng Fang, Jiakun Cui, Shichang Liao, Shiwu Wen, Jinyu Huazhong University of Science and Technology State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Wuhan430074 China TODE Co. Ltd. Nanjing210046 China

The growing scale of the power system has intensified the demand for computational efficiency in unit commitment (UC). This paper introduces a novel approach that addresses this issue by adopting graph neural networks (GNN) into the Branch and Bound (B&B), integrating the characteristics of variable selection (VS) within UC problems. Our method focuses on efficiently obtaining optimal solutions using the GNNguided VS approach. Specifically, we investigate the characteristics of the high-quality but time-consuming VS heuristic when solving UC problems. Then, the GNN incorporates these characteristics to make highquality VS decisions accurately and quickly. In the implementation, the UC model is solved using a highquality but time-consuming VS heuristic to collect training data. These data are employed to train the GNN model with designed label-smooth and depthadaptive mechanisms, which exploit these characteristics in UC problems for acceleration. To evaluate the effectiveness, we conduct various experiments on the IEEE118, RTS-GMLC, and a real-world provincial system in China. The overall performance demonstrates significant improvements (4.6x, 1.5x, and 1.8x, respectively) in computational efficiency. The comparison experiments show that the proposed mechanisms contribute to enhanced learning performance and, thus, further UC acceleration. Moreover, our approach exhibits promising generalization capabilities. © 1969-2012 IEEE.

关键词： Graph neural networks

来源：评论

学校读者我要写书评

暂无评论

Real-time nested scheduling model with embedded adaptive charging–discharging strategy considering EV uncertainty

引用

Energy 2025年 328卷

作者： Aoli, Huang Suhua, Lou Gang, Lu Wenrui, Zhang State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology Wuhan430074 China State Grid Energy and Power Planning Laboratory State Grid Energy Research Institute Beijing102209 China

The widespread adoption of electric vehicles (EVs) offers substantial environmental benefits but presents significant challenges for power system management due to the inherent uncertainties in EV users’ behavior and charging demands. To address these issues, this study proposes a real-time nested scheduling model with an adaptive charging–discharging strategy for community, supermarket, and street parking facilities. The model employs an adaptive approach where EV users provide essential information upon arrival at the microgrid (MG), choosing between unordered or ordered participation based on their preferences. A priority-based two-stage schedule planning strategy is implemented, first planning the overall charging–discharging power for the EV cluster, then refining individual EV power based on priorities. For EVs requiring early departure, priorities are adjusted to ensure the expected state of Charge is reached before leaving. The model features a real-time nested framework with a bi-level optimization outer layer to coordinate conflicting interests among entities and an inner layer for EV power allocation. To address high uncertainties, a Model Predictive Control algorithm is employed, incorporating Karush–Kuhn–Tucker conditions, strong duality theorem, and linearization techniques. Simulation results demonstrate the model's superior operational efficiency, reliability, and robustness while achieving a win–win outcome for both the MG operator and EV cluster. © 2025

关键词： Linear transformations

来源：评论

学校读者我要写书评

暂无评论

Adaptive restart scheme for HVDC transmission system based on voltage injection

Adaptive restart scheme for HVDC transmission system based o...

引用

18th International Conference on Developments in Power System Protection (DPSP APAC 2025)

作者： Ruizhi Ma Yu Chen Minghao Wen Ke Han State Key Laboratory of Advanced Electromagnetic Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan 430074 People's Republic of China

ISBN: (数字)9781837242900

Rapid restarting of high-voltage DC transmission system after a fault is crucial for the stable and reliable operation of the system. Conventional restart methods have the disadvantages of blindness, long restart process, and high restart failure rate. Restarting on permanent fault will cause more impact on the system or lead to system shutdown. To solve this problem, this paper proposes an adaptive restart scheme based on voltage injection. First, a fault property identification mode based on open-loop voltage control and closed-loop current control is proposed to be incorporated into the LCC control system. Secondly, the change rule of line voltage and current in the fault identification stage is analyzed based on the equivalent circuit diagram of the system under temporary and permanent faults. Finally, an adaptive restart scheme for HVDC transmission system based on voltage injection is proposed. The proposed scheme realizes the injection of voltage signals into the system after fault isolation while limiting the system current, which improves the safety of the system during fault restart. The proposed scheme can be realized based on the existing control system without additional equipment. The scheme has good noise and interference immunity, and its realization has a low sampling rate requirement, which has a good prospect for engineering applications. An electromagnetic transient model of the LCC-HVDC transmission system is constructed in PSCAD/EMTDC based on the engineering parameters, and simulations are carried out for verification. The simulation results show that the proposed scheme can correctly recognize the property of faults and can realize the restart of the system after the fault.

关键词：

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：