检索结果-内蒙古大学图书馆

Sodium phytate stabilizing lattice oxygen in high-nickel oxide cathodes for thermal runaway inhibition and high voltage operation

引用

Science bulletin 2025年

作者： Yuanke Wu Qiang Wu Ziqi Zeng Yixuan Dong Shijie Cheng Jia Xie State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan 430074 China State Key Laboratory of Materials Processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan 430074 China. State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan 430074 China. State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan 430074 China. Electronic address: ziqizeng@***. State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan 430074 China. Electronic address: xiejia@***.

The reactive oxygen species (O*) released from the nickel-rich layered oxide cathodes (LiNiCoMnO, NCM) are responsible for triggering thermal runaway (TR) in lithium-ion batteries (LIBs). Specifically, the charge compensation from transition metal (TM) 3d to oxygen (O) 2p in NCM plays a pivotal role in O* release. Here, inspired by the strong chelating effect of sodium phytate (PN) on TM, we employ PN as a cathode additive to coordinate with nickel, thereby weakening the charge compensation of TM 3d to O 2p on the surface of LiNiCoMnO (NCM811) and ultimately enhancing battery safety. It is shown that the chelation successfully stabilizes lattice oxygen and suppresses the release of O*, preventing detrimental phase transitions in NCM811 and reducing heat generation from O* related crosstalk reactions. Consequently, the TR trigger temperature (T) of NCM811 pouch cell with PN elevates from 125.9 to 184.8 °C, while the maximum temperature (T) decreases from 543.7 to 319.7 °C. Moreover, the PN-derived modification layer allows NCM811 to maintain exceptional cycling stability for over 700 cycles at 4.6 V. This strategy provides a facile method for stabilizing lattice oxygen in NCM, inhibiting O*-triggered TR, and enhancing high-voltage performance.

关键词： Battery safety Chelation Chemical crosstalk Lithium−ion battery Reactive oxygen species Thermal runaway

来源：评论

学校读者我要写书评

暂无评论

An engineering Approach for Short-Circuit Current Calculation Considering WTG Integrated

An Engineering Approach for Short-Circuit Current Calculatio...

引用

Power Energy Systems and Applications (ICoPESA), International Conference on

作者： Yiran Dong Hengchu Shi Dezhi Kong Hao You Jing Chen Shoudong Xu Jinfu Chen State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology Wuhan China Yunnan Electric Power Dispatching and Controlling Center China Southern Power Grid Kunming China System Analysis Department Scientific Research Institute of Yunnan Power Grid Kunming China

With the ever-increasing scale of wind power, the fault characteristics of power grids have changed dramatically, and the existing relay setting calculation approaches can no longer meet the requirements of modeling. The wind turbine generator (WTG) is usually treated as constant current source or set to zero to adapt to the traditional short-circuit current calculation software. This method does not consider the fault characteristics of the WTG, so the calculation accuracy is lower than that of iteration. However, the iterative algorithm also has problems, such as non-convergence or too many iterations leading to long computation time. Therefore, a calculation method of short-circuit current considering WTG integrated is proposed in this paper, which can solve the problem of iteration non-convergence while ensuring accuracy within the allowable range of engineering. Firstly, the WTG short-circuit current models considering converter control strategy and fault characteristics are established. Then, the branches with WTG are converted into "constant potential source + equivalent impedance" to facilitate WTG embedding in the relay protection setting calculation software and maintain consistency with the traditional synchronous generator equivalent mode. In addition, the calculation formula of equivalent impedance is deduced, and the modified voltage is also proposed to improve the accuracy. Finally, a simulation is performed in GIRGE B4-39 and part of actual power grids structures in a province to verify engineering practical value of the proposed method.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Comparative Analysis of Bilateral Permanent Magnet Linear Synchronous Motors With Different Structures

引用

CES Transactions on Electrical Machines and Systems 2020年第2期4卷 142-150页

作者： Fengrui Cui Zhaolong Sun Wei Xu Weichang Zhou Yi Liu School of Naval University of Engineering Wuhan430000China State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan430074China

Permanent magnet linear synchronous motor(PMLSM)has the advantages of high thrust density and good control accuracy,which can be applied in high-power and high-speed *** this paper,the analytical models are established to obtain the electromagnetic performance for the PMLSMs with dual secondaries and dual *** air-gap flux density and the electromagnetic thrust are also obtained by the finite element model to verify theoretical ***,an improved structure is also put forward in order to suppress the thrust fluctuation of the ***,the advantages and disadvantages of two PMLSMs topologies are *** analyses would provide a guide for the design of PMLSMs applied in high-power and high-speed occasions.

关键词： Bilateral permanent magnet linear synchronous motor(BPMLSM) analytical method finite element algorithm(FEA) electromagnetic performance.

来源：评论

学校读者我要写书评

暂无评论

Implementation and Preliminary Analysis of single/dual-SPI based on NIMROD

Implementation and Preliminary Analysis of single/dual-SPI b...

引用

Electrical engineering (CIYCEE), IEEE China International Youth Conference on

作者： Zixiao Jiao Zhonghe Jiang Zhen Li Keze Li Jianjun Yuan International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan China Institute of Fusion and Plasma Physics School of Electrical and Electronic Engineering

ISBN: (数字)9781665477321

ISBN: (纸本)9781665477338

Compared with massive gas injection(MGI), shattered pellet injection(SPI), as a method which is likely to apply on ITER, has advantages in deep injection and faster penetration speed. This paper introduces the NIMROD(non-Ideal MHD with Rotation, Open Discussion) code coupled with SPI module to carry out numerical simulations. Based on the SPI experiments on the J-TEXT, a set of SPI parameters are selected and scanned, including impurity amount, shattered degree and plume speed. From the results, simulations are in good agreements with experiments. Besides, the paper also achieve dual-SPI simulations which has mainly analyzed magnetic stochasticity and radiation. Though simulation results show dual-SPI may not evoke a higher MHD instabilities, it will bring different modes increasing situations. Dual-SPI will produce more radiation, advance thermal quench(TQ) and heighten current quench(CQ) rate. What's more, dual-SPI can improve radiation asymmetry apparently.

关键词： Analytical models Magnetohydrodynamics Codes Simulation Impurities Thermal quenching Numerical simulation

来源：评论

学校读者我要写书评

暂无评论

Multiphoton Multidimensional Entanglement Based on Graph Theory

Multiphoton Multidimensional Entanglement Based on Graph The...

引用

2024 Conference on Lasers and Electro-Optics, CLEO 2024

作者： Bao, Jueming Fu, Zhaorong Pramanik, Tanumoy Mao, Jun Chi, Yulin Cao, Yingkang Zhai, Chonghao Mao, Yifei Dai, Tianxiang Chen, Xiaojiong Jia, Xinyu Zhao, Leshi Zheng, Yun Yang, Yan Tang, Bo Li, Zhihua Luo, Jun Wang, Wenwu Peng, Yingying Liu, Dajian Dai, Daoxin He, Qiongyi Muthali, Alif Laila Oxenløwe, Leif K. Vigliar, Caterina Paesani, Stefano Hou, Huili Santagati, Raffaele Silverstone, Joshua W. Laing, Anthony Thompson, Mark G. O'Brien, Jeremy L. Ding, Yunhong Gong, Qihuang Wang, Jianwei State Key Laboratory for Mesoscopic Physics School of Physics Peking University Beijing100871 China Institute of Microelectronics Chinese Academy of Sciences Beijing100029 China State Key Laboratory for Modern Optical Instrumentation College of Optical Science and Engineering Ningbo Research Institute International Research Center for Advanced Photonics Zhejiang University Hangzhou310058 China Department of Electrical and Photonics Engineering Technical University of Denmark Kgs. Lyngby2800 Denmark Niels Bohr Institute University of Copenhagen Blegdamsvej 17 CopenhagenDK-2100 Denmark Quantum Engineering Technology Labs H. H. Wills Physics Laboratory Department of Electrical and Electronic Engineering University of Bristol BristolBS8 1FD United Kingdom QuantumLab Boehringer Ingelheim Ingelheim am Rhein55218 Germany Department of Physics The University of Western Australia Perth6009 Australia

ISBN: (纸本)9781957171395

We demonstrate the capability of graph theory scheme to realize complex multiphoton multidimensional state. We show the generation of quantum states based on graph theory was realized by the reconfigurable integrated quantum chip. The 4-photon 3-dimensional GHZ state was generated and verified and manipulated for the first time. CLEO 2024 © Optica Publishing Group 2024 © 2024 The Author(s)

关键词： Quantum entanglement

来源：评论

学校读者我要写书评

暂无评论

DC Transform Circuit Design Based on Multiplier Rectification

DC Transform Circuit Design Based on Multiplier Rectificatio...

引用

Workshop on Wide Bandgap Power Devices and Applications in Asia (WiPDA Asia)

作者： Penghui Yin Xuehua Wang Xinbo Ruan State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology Wuhan P.R.China

ISBN: (纸本)9781665448178

Due to the high reliability and high efficiency, the DC/DC converters are rapidly developing. However, a challenge is faced which is the output voltage range of the DC/DC converter is limited by the withstand voltage of the device in practice. In order to solve this problem, this paper designs a DC/DC circuit based on the voltage double rectifier circuit and half-bridge LLC topology. It realizes high voltage output in the case of low voltage input. Meanwhile, the requirements for the withstand voltage of the device are relaxed, which is convenient for the selection of the device. Furthermore, the zero voltage switch (ZVS) of the primary-side switches and the zero current switch (ZCS) of the secondary-side diodes can be achieved. The correctness and effectiveness of the proposed method are finally verified by simulation.

关键词： Simulation Asia Rectifiers Voltage Switches Transforms Zero voltage switching

来源：评论

学校读者我要写书评

暂无评论

Multiphoton Multidimensional Entanglement Based on Graph Theory

Multiphoton Multidimensional Entanglement Based on Graph The...

引用

CLEO: Science and Innovations in CLEO 2024, CLEO: S and I 2024 - Part of Conference on Lasers and Electro-Optics

关键词： Quantum entanglement

来源：评论

学校读者我要写书评

暂无评论

Efficiency and bandwidth improvement of integrated acousto-optic modulators using dielectric acoustic reflectors

引用

APL Photonics 2025年第5期10卷

作者： Liu, Huilong Huang, Jiying Jiang, Jiantao Huang, Hongyi Chen, Huipeng Chen, Chengyu La, Haiwei Li, Huan Xu, Xiaochun Chen, Yuping Li, Zhaohui Wan, Lei School of Physics Ningxia University Yinchuan750021 China Department of Electronic Engineering College of Information Science and Technology Jinan University Guangzhou510632 China State Key Laboratory of Photonics and Communications School of Physics and Astronomy Shanghai Jiao Tong University Shanghai200240 China State Key Laboratory of Extreme Photonics and Instrumentation Center for Optical and Electromagnetic Research College of Optical Science and Engineering International Research Center for Advanced Photonics Zhejiang University Hangzhou310058 China North Minzu University Yinchuan750030 China Guangdong Provincial Key Laboratory of Optoelectronic Information Processing Chips and Systems Sun Yat-sen University Guangzhou510275 China Zhuhai519000 China

Manipulation and control of traveling surface acoustic waves (SAWs) are critical to the realization of high-performance integrated acousto-optic modulators (AOMs). In this paper, we present the chalcogenide glass (ChG) acoustic reflector-loaded thin-film lithium niobate (TFLN) Mach-Zehnder interferometer (MZI) AOMs with single-arm and single-finger configurations based on the forming mechanism of the acoustic standing wave. Through the engineering of dielectric acoustic reflectors, threefold modulation efficiency improvement is achieved for the TFLN MZI AOM with X-Z orientation, while twofold bandwidth extension is demonstrated for the counterpart with X-30°Y orientation. Propagation loss of the Rayleigh SAW around 0.85 GHz and the reflection coefficient of ChG acoustic grating are measured to be 3.04 dB/mm and 0.34, respectively. Introduction of dielectric acoustic reflectors opens a new pathway to the study of efficient and wideband acousto-optic interaction devices. © 2025 Author(s).

关键词： Light modulation

来源：评论

学校读者我要写书评

暂无评论

Corrigendum to“Elastic properties of Cu–6wt%Ag alloy wires for pulsed magnets investigated by ultrasonic techniques”

引用

Chinese Physics B 2025年第4期34卷 625-625页

作者： Ziyu Li Tianyi Gu Wenqi Wei Yang Yuan Zhuo Wang Kangjian Luo Yupeng Pan Jianfeng Xie Shaozhe Zhang Tao Peng Lin Liu Qi Chen Xiaotao Han Yongkang Luo Liang Li Wuhan National High Magnetic Field Center Huazhong University of Science and TechnologyWuhan 430074China School of Physics Huazhong University of Science and TechnologyWuhan 430074China State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and TechnologyWuhan 430074China School of Materials Science and Engineering State Key Laboratory for Materials Processing and Die&Mold TechnologyHuazhong University of Science and TechnologyWuhan 430074China

Figure 3 in the paper[***.B 34020701(2025)]contains an axis labeling *** revised figure is *** modification does not affect the result presented in the paper.

关键词： high-field magnet Cu-Ag alloy ultrasonic techniques elastic constants

来源：评论

学校读者我要写书评

暂无评论

Characterization of the High Graded Magnetic Material based Linear Generator for Wave Energy Conversion 13

Characterization of the High Graded Magnetic Material based ...

引用

13th International Symposium on Linear Drives for Industry Applications, LDIA 2021

作者： Molla, Selim Farrok, Omar Islam, Md. Rabiul Xu, Wei Department of Electrical and Electronic Engineering Ahsanullah University of Science and Technology Dhaka1208 Bangladesh School of Elect. Comput. and Telecommun. Eng. University of Wollongong WollongongNSW2522 Australia State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology Wuhan430074 China

ISBN: (纸本)9781728172101

Characterization of a permanent magnet linear generator (PMLG) for harvesting oceanic wave energy is presented in this paper. For the characterization, a PMLG has been designed which has a translator containing permanent magnet and vertically symmetric stator. Different high graded magnetic materials are applied to the PMLG to generate high amount of electrical power. As a part of characterization, load profile is analyzed to determine its peak generated power for each of the magnetic materials. Comparison of generated voltage, generated voltage, load current, output power, and magnetic flux linkage of the PMLG are presented in detail. Translator force and velocity are determined to calculate the efficiency of the PMLG. The analysis is performed with finite element method by using ANSYS/Maxwell software. Armature reaction, demagnetization, and core loss that occurs in the PMLG are considered for the analysis. © 2021 IEEE

关键词： Permanent magnets

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：