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Si-doped Li_(6)PS_(5)I with enhanced conductivity enables superior performance for all-solid-state lithium batteries

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Chinese Chemical Letters 2024年第10期35卷 479-484页

作者： Liang Ming Dan Liu Qiyue Luo Chaochao Wei Chen Liu Ziling Jiang Zhongkai Wu Lin Li Long Zhang Shijie Cheng Chuang Yu State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic EngineeringHuazhong University of Scienceand TechnologyWuhan430074China School of Chemistry and Chemical Engineering Huazhong University of Science and TechnologyWuhan 430074China State Grid Hubei Electric Power Research Institute Wuhan 430077China College of Physics and Energy Fujian Normal UniversityFuzhou 350117China

Lithium argyrodites Li_(6)PS_(5)X(X=Cl,Br,I)show great potential as solid electrolytes for solid-state lithium batteries due to their high Li-ion conductivities and excellent electrode ***,the relatively low conductivity of Li_(6)PS_(5)I(10^(-6)m S/cm)compared to the other two compositions limits its ***,Si-doped Li_(6.5)P_(0.5)Si_(0.5)S_(5)I electrolyte is designed and synthesized with superior high conductivity of 3.6 mS/*** characterization proves the increase due to the anion disorder and volume expansion caused by ***,the poor interfacial stability between layered oxide cathode Li Ni_(0.6)Co_(0.2)Mn_(0.2)O_(2)and Li_(6.5)P_(0.5)Si_(0.5)S_(5)I inhibits its battery *** introducing Li_(3)InCl6electrolyte in the configuration,the corresponding battery delivers high initial discharge capacity of 150.2m Ah/g and superior cyclability during 250 cycles at 0.5 *** work offers design strategy to obtain Li_(6)PS_(5)I-based electrolytes for high performance solid-state batteries.

关键词： Argyrodite electrolyte Li_(6.5)P_(0.5)Si_(0.5)S_(5)I All-solid-state lithiumbatteries Stability Electrochemical performance

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Suppression of runaway current by electrode biasing and limiter biasing on J-TEXT

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Plasma Science and technology 2022年第12期24卷 7-14页

作者： Lingke MOU Zhongyong CHEN Wei YAN You LI Weikang ZHANG Jiangang FANG Yingzhou JIANG Xiaobo ZHANG Yu ZHONG Feng LI Guinan ZOU Fanxi LIU Zhipeng CHEN Zhoujun YANG Nengchao WANG Yonghua DING Yuan PAN J-TEXT Team International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics State Key Laboratory of Advanced Electromagnetic Engineering and TechnologySchool of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074People's Republic of China

The avoidance of runaway electrons(REs) generated during plasma disruption is of great concern for the safe operation of tokamak *** study on the suppression of runaway current by electrode biasing(EB) and limiter biasing(LB) has been performed on the J-TEXT tokamak,which could be an alternative way to suppress the runaway *** experimental results show that the higher the voltage value,the smaller the runaway current in both EB and LB *** runaway current can be completely suppressed at an electrode biased voltage of +450 V and a limiter biased voltage of +300 *** comparison of the energy spectra during the runaway plateau phase shows that the maximum energy max(E_(RE)) and radiation temperature T_(HXR)hard x-rays(HXRs)are significantly reduced after the application of +200 V limiter biased *** electric field generated by the biased voltage may be the key factor to suppress the runaway current,and the measured radial electric field increases obviously after the voltage is *** may result in an increase in the loss of REs to realize the suppression of runaway current.

关键词： plasma disruption electrode biasing limiter biasing runaway current

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Experimental Study on Electrode Erosion Process with High Current Vacuum Arc 19th

Experimental Study on Electrode Erosion Process with High Cu...

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19th Annual Conference of China Electrotechnical Society, ACCES 2024

作者： Peng, Ruochen Li, Yilong Zhao, Yuan Chen, Lixue Ya, Penglong Lyu, Tianmao State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science & Technology Wuhan China School of Electrical and Electronic Engineering Huazhong University of Science & Technology Wuhan China Key Laboratory of Pulsed Power Technology Huazhong University of Science & Technology Ministry of Education China

ISBN: (纸本)9789819613861

During the breaking process, the erosion of anode contact greatly affects the result of high current vacuum breaking. Therefore, it is important to study the forming and transforming process of anode modes for improving the breaking performance and life of vacuum circuit breaker. The cup axial magnetic field (AMF) contacts is widely used in vacuum trigger switch and vacuum on-load tap changer. In order to study the vacuum arc characteristics and anode mode change of cup AMF contacts under high current density, the 40 mm diameter cup AMF contacts with six slots is observed and studied by experimental means under the gap distance of 6 mm and 10 mm. In this paper, the arc current-voltage characteristics, vacuum arc shape and surface erosion of contact are analyzed. The analysis results show that the larger the contact gap, the larger the arc voltage, the smaller the arc anode mode threshold current and the more serious the contact erosion degree. © Beijing Paike Culture Commu. Co., Ltd. 2025.

关键词： Anodes

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In-situ observation and analysis of high temperature behavior of carbides in GCr15 bearing steel by confocal laser scanning microscopy

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Journal of Iron and Steel Research International 2025年第2期32卷 409-417页

作者： Jun Ren Yue Teng Xiang Liu Xi Xu Hui-gai Li Ke Han Qi-jie Zhai State Key Laboratory of Advanced Special Steel and Shanghai Key Laboratory of Advanced Ferrometallurgy and School of Materials Science and Engineering Shanghai UniversityShanghai 200444China Center for Advanced Solidification Technology(CAST) School of Materials Science and EngineeringShanghai UniversityShanghai 200444China Ansteel Group Iron and Steel Research Institute Anshan 114000LiaoningChina National High Magnetic Field Laboratory Florida State UniversityTallahasseeFL 32310USA

The high-temperature dissolution behavior of primary carbides in samples taken from GCr15 continuous-casting bloom was observed in-situ by confocal laser scanning *** were fitted to the dissolution kinetics of primary carbides during either heating or *** of carbides proceeded in three stages(fast→slow→faster)as either temperature or holding time was *** the heating process and during the first and third stages of the soaking process,the original size of the carbides determined the steepness of the slope,but during the middle(“slow”)stage of the soaking process,the slope remained *** initial size of the carbides varied greatly,but their final dissolution temperature fell within the narrow range of 1210-1235℃,and the holding time remained within 50 *** analysis was used to study the morphological characteristics of small and medium-sized carbides during the dissolution *** to changes in the fractal dimension before and after soaking,the carbides tended to evolve towards a more regular morphology.

关键词： Bearing steel High-temperature confocal laser scanning microscope In-situ observation Primary carbide Fractal analysis

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High-temperature creep rupture behavior of dissimilar welded joints of RAFM steel and 316L steel by friction stir welding

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Journal of Iron and Steel Research International 2024年第10期31卷 2438-2447页

作者： Xin Ji Bin He Wei Guan Chen-xi Liu Hui-jun Li Lei Cui Yong-chang Liu Tianjin Key Laboratory of Advanced Joining Technology School of Materials Science and EngineeringTianjin UniversityTianjin300354China State Key Lab of Hydraulic Engineering Simulation and Safety School of Materials Science and EngineeringTianjin UniversityTianjin300350China

Creep rupture of the reduced activation ferritic/martensitic(RAFM)steel and 316L steel dissimilar joint by friction stir welding was *** creep rupture time of the dissimilar joint was 1941 h at 600℃/100 MPa and 120 h at 650℃/100 *** creep fracture occurred in heat affect zone(HAZ)of RAFM steel side where coarse Laves phase was *** formation and coarsening of the Laves phase particles in HAZ of RAFM steel side were the main reasons that caused the creep fracture of the dissimilar *** Laves phase particles nucleated adjacent to the large M_(23)C_(6) particles at the grain boundaries where W element segregated and grew fast during creep *** large Laves phase would deteriorate the pinning effect of M_(23)C_(6) carbides and weaken the solid solution strengthening ***,the size of the Laves phase in HAZ of RAFM steel side was bigger than that in stir zone of RAFM steel *** reasons explain the creep fracture in HAZ of RAFM steel side of dissimilar joint.

关键词： Creep behavior Dissimilar joint Friction stir welding Laves phase M23C6 carbide

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Application of the interpretable disruption prediction model to the J-TEXT high-density disruption experiment 4

Application of the interpretable disruption prediction model...

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4th International Conference on Energy, Power and Electrical engineering, EPEE 2024

作者： Lin, Weijie Shen, Chengshuo Gao, Li Yang, Zhoujun Huazhong University of Science and Technology 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 Wuhan China

ISBN: (纸本)9798331518066

Nuclear fusion energy generated by magnetic confinement reactors plays a central role in preventing global energy insecurity and atmospheric pollution. Disruption as a plasma instability can terminate the fusion reaction and damage key components. Predicting and mitigating disruption represents one of the pressing challenges for tokamak devices. Moreover, the disruption predictor can be used for more than just predicting disruption owing to the learned disruption physics. In our previous research, an interpretable disruption predictor(IDP-PGFE) was developed to predict disruption and brought a new sight for disruption experiments under RMPs. Electron Cyclotron Resonance Heating (ECRH) can affect the density limit in experiments conducted on J-TEXT. Distinguishing the causes of disruption in high-density experiments under ECRH helps the understanding of physics mechanisms. In this paper, the application of IDP-PGFE in high-density disruption experiments under ECRH has been introduced. Benefiting from strong interpretability, IDP-PGFE can help researchers accurately identify various types of disruptions, including typical density limit disruptions, radiation-enhanced disruptions, and those driven by increased Magnetohydrodynamics (MHD) instabilities. This approach provides valuable insights into the mechanisms underlying disruption events and contributes to advancing disruption prediction capabilities in fusion research. © 2024 IEEE.

关键词： Tokamak devices

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Research status of crack problem in laser brazing diamond

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Journal of Iron and Steel Research International 2024年第10期31卷 2329-2343页

作者： Hong-tao Zhu Jian Qin Wei-min Long Xin-yi Song Pei-yao Jing State Key Laboratory of Advanced Brazing Filler Metals&Technology Zhengzhou Research Institute of Mechanical Engineering Co.Ltd.Zhengzhou450001HenanChina

Diamond tools have been widely used in national defense military,automobile manufacturing,resource exploitation and other *** brazing diamond technology is often applied to the preparation of diamond ***,the formation and expansion of cracks in the process of laser brazing diamond seriously affect the mechanical properties of diamond *** order to solve the crack problem of laser brazing diamond,many scholars are committed to the research on improving the solder,optimizing the laser process parameters,improving the laser brazing equipment,optimizing the design of joint form,and developing ultrasonic-assisted laser brazing technology,*** studies have achieved certain *** at the research status of laser brazing diamond crack problem,the crack characteristics of brazing diamond are firstly introduced,and the formation reasons of laser brazing diamond crack are ***,the elemental characteristics of brazing filler metals used in brazing diamond are *** influences of Ni-Cr and Ag-Cu-Ti alloy solder and laser process parameters on the crack problem are ***,the solutions to the crack problem by scholars at home and abroad in recent years are summarized,and the future research directions to solve crack problem are prospected.

关键词： Diamond tool Laser brazing Crack problem Process parameter Solder alloy Crack characteristics

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Preparation of ultra-high ductility and high strength Mg-Sn-Zn-Zr alloy by differential thermal ECAP(DT-ECAP)induced heterogeneous structure

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Journal of Materials Science & technology 2024年第32期199卷 222-245页

作者： Tianshui Zhou Bing Wang Yaqin Li Shiwen Hu Xiaoqiang Li Dexue Liu State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals Lanzhou University of TechnologyLanzhou 730050China School of Materials Science and Engineering Lanzhou University of TechnologyLanzhou 730050China

Developing high-ductility magnesium(Mg)alloys has become an imminent issue for their wide *** this work,a new Mg-Sn-Zn-Zr alloy with ultra-high ductility(elongation,*** 40%)and high ultimate tensile strength(UTS,~309-354 MPa)was prepared by a novel differential thermal equal-channel angular pressing(DT-ECAP).Heterogeneous structures,including bimodal grain structures and in-homogeneous distribution of second phases composed of banded structure and particle free zone(PFZ),were induced by DT-ECAP *** on the results of electron backscatter diffraction(EBSD),trans-mission electron microscopy(TEM),high-resolution TEM(HRTEM),and selected area electron diffraction(SAED),the bimodal grain structure originated from incomplete dynamic recrystallization(DRX)domi-nated by Zener pinning,strain-induced grain boundary migration(SIBM)and the limitation of polycrys-tallization due to lower dislocation ***,the bimodal distribution of second phases was highly associated with the defect density and initial *** importantly,the enhanced strength of DT-ECAPed alloys can be primarily attributed to hetero-deformation induced(HDI)strengthening,grain boundary strengthening,and precipitation ***,HDI hardening,texture weakening or randomizing activation of non-basal slip,high density of dislocations in sub-structures,and twining in-duced superior work-hardening effect,which was highly responsible for the ultra-high ductility in sixth pass(6P)*** current work provides a novel DT-ECAP process for inducing heterogeneous structure and offers beneficial insight into the development of ultra-high ductility and high strength for rare-earth-free Mg alloys via a combination of HDI strengthening and hardening and other vital mechanisms.

关键词： DT-ECAP process Heterogeneous structures HDI strengthening and hardening Mechanical properties Mg-Sn-Zn-Zr alloy

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Photo-responsive Carboxymethyl Chitosan/Laponite Hydrogel as a Potential Spinal Cord Injury Scaffold:Characterization and Cytocompatibility Study

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Journal of Wuhan University of technology(Materials Science) 2024年第6期39卷 1628-1636页

作者： Jayanti Parajuli LI Yongtao CHANG Likun YE Liyuan HAN Yingchao YIN Yixia State Key Laboratory of Advanced Technology for Material Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Biomedical Materials and Engineering Research Center of Hubei Province Wuhan University of TechnologyWuhan 430070China

We synthesized photo-responsive carboxymethyl chitosan(CMC-MA)via free radical polymerization and utilized nanoclay laponite(LAP)as an inorganic crosslinking agent to develop an injectable and 3D-printable CMC-MA/LAP *** determined the optimal ratio of 2.5 w/v%CMC-MA/7.5 w/v%LAP based on injection molding,compression modulus,swelling properties,rheological properties,and 3D printing properties of the hydrogel ***-vitro cytocompatibility experiments showed that both CMC-MA and CMC-MA/LAP hydrogel had no inhibitory effect on cell proliferation and can promote cell growth when cultured on the surface of the hydrogel ***,the hydrogel containing LAP particles significantly facilitated cell adhesion(>60%)compared with the hydrogel without LAP(20%).Our findings demonstrate that the CMC-MA/LAP hydrogel has great potential for tissue repair in neural tissue engineering.

关键词： neural injectable hydrogels spinal cord injury CMC-MA/LAP hydrogel cytocompatibility

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Design and Analysis of Coupled Self-charging Mechanical DC Circuit Breaker

Design and Analysis of Coupled Self-charging Mechanical DC C...

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International Conference of Electrical, Electronic and Networked Energy Systems, EENES 2024

作者： Xie, Yunlong Yuan, Zhao Chen, Lixue State Key Laboratory of Advanced Electromagnetic Technology Huazhong University of Science and Technology Wuhan430074 China Key Laboratory of Pulsed Power Technology Ministry of Education School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan430074 China

ISBN: (纸本)9789819620456

Mechanical DC circuit breakers have become an irreplaceable part of flexible DC power grids because of their advantages of high economy, low con-duction impedance, and reliable control. However, the large volume of the charging circuit and the high interruption pressure in low current are still the problems it faces. To address the aforementioned issues, a Coupled Self-charging Mechanical DC Circuit Breaker (CSC-DCCB) is proposed. This innovative solution mitigates the risk of switch arc reignition during the commutation process by incorporating a self-charging circuit. The energy consumption process of metal-oxide varistor will cause the capacitor to complete recharging, and this voltage will be used for the reclosing of the CSC-DCCB. Secondly, the parameter of the CSC-DCCB is optimized to achieve a lower overall capacity of the circuit breaker and the rated voltage of the converter switches, which retains the traditional low conduction loss. Finally, the feasibility of CSC-DCCB is validated through PSCAD, the technical parameters of CSC-DCCB are compared with traditional DCCB, showing that CSC-DCCB has better economic efficiency. © Beijing Paike Culture Commu. Co., Ltd. 2025.

关键词： Flexible electronics

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