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Rare Meta.s 2024年第1期43卷 280-288页

作者： Kyoung-Joung Yoo Dae-Yun Kang Nahyun Kim Ho-jin Lee ta.Hyeong Kim ta.ho Kim ta. Geun Kim School of Electrical Engineering Korea UniversitySeoul 02841Republic of Korea

The use of electrochemical-meta.lization-based volatile threshold switching selectors in cross-point arrays has been widely explored owing to their high on-off ratios and simple ***,these devices are unsuita.le for cross-point architectures because of the difficulty in controlling the random filament formation that results in large fluctuations in the threshold volta.e during *** this study,we investigated the unidirectional threshold transition characteristics associated with an Ag/GST/HfO_(x)/Pt-based bilayer selector and demonstrated the occurrence of a low leakage current(ta.e(Δ0.11 V).The bilayer structure could control the filament formation in the intermediate sta.e through the insertion of an HfO_(x) tunneling *** sta.king a bilayer selector with NiO_(x)based resistive random-access memory,the leakage and programming currents of the device could be significantly *** the crossbar array configuration,we performed equivalent circuit analysis of a one-selector oneresistor(1S1R) devices and estimated the optimal array size to demonstrate the applicability of the proposed *** maximum accepta.le crossbar array size of the 1S1R device with the Ag/GST/HfO_(x)/Pt/Ti/NiO_(x)/Pt structure was 5.29×10^(14)(N^(2),N=2.3×10^(7)).

关键词： Selector device Tunneling barrier Threshold switching Sputtering 1S1R Cross-point array

XOR spin logic operated by unipolar current based on field-free spin-orbit torque switching induced by a lateral interface

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Rare Meta.s 2024年第8期43卷 3868-3875页

作者： Yan-Ru Li Mei-yin Yang Guo-Qiang Yu Bao-Shan Cui jin-Biao Liu Yong-Liang Li Qi-Ming Shao Jun Luo Key Laboratory of Microelectronic Devices and Integrated Technology Institute of MicroelectronicsChinese Academy of Sciences(IMECAS)Beijing 100029China University of Chinese Academy of Sciences(UCAS) Beijing 100049China Songshan Lake Materials Laboratory Dongguan 523808China Institute of Physics Chinese Academy of SciencesBeijing 100190China Key Laboratory for Magnetism and Magnetic Materials of Ministry of Education Lanzhou UniversityLanzhou 730000China Department of Electronic and Computer Engineering The Hong Kong University of Science and TechnologyHong Kong 999077China

Spin logics have emerged as a promising avenue for the development of logic-in-memory *** particular,the realization of XOR spin logic gates using a single spin-orbit torque device shows great potential for low-power sta.eful logic circuits in the next *** this study,we successfully obta.ned the XOR logic gate by utilizing a spin-orbit torque device with a lateral interface,which was created by local ion implanta.ion in the ta.Pt/Co/ta.Hall device exhibiting perpendicular magnetic *** angle of the lateral interface is set at 45°relative to the current direction,leading to the competition between symmetry breaking and current-driven Néel-type domain wall ***,the field-free magnetic switching reversed is realized by the same sign of current amplitude at this *** on this field-free magnetic switching behavior,we successfully proposed an XOR logic gate that could be implemented using only a single spin-orbit torque Hall *** study provides a potentially viable approach toward efficient spin logics and in-memory computing architectures.

关键词： Filed-free magnetic switching Spin-orbit torque XOR logic gate Lateral interface

Low cost and low density chloride solid electrolyte for all solid sta.e cathode with high active material ratio

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Nano Research 2024年第10期17卷 8826-8833页

作者： Hao-Yuan ta. Mei-Yu Zhou Zhongyuan Huang jin-Da Luo jing-Tian Yang Jian-Ping Wang Ye-Chao Wu Xiao-Bin Cheng Zi-Wei Wang Xu-Dong Hao Linjun Wang Ke Gong Yi-Chen yin yinguo Xiao Hong-Bin Yao Hefei National Research Center for Physical Sciences at the Microscale University of Science and Technology of ChinaHefei 230026China Department of Applied Chemistry University of Science and Technology of ChinaHefei 230026China School of Advanced Materials Peking University Shenzhen Graduate SchoolShenzhen 518055China

Chloride solid electrolytes(SEs)have attracted widespread attention due to their high room-temperature ionic conductivity and excellent cathode ***,the conventionally selected central meta. elements(e.g.,In,Y and ta.are usually rare and heavy,inevita.ly causing the high cost and high density of the obta.ned chloride ***,by choosing abundant and light Mg and Al as central meta. elements,we develop a cheap and low density Li_(1.2)Mg_(0.95)Al_(0.3)Cl_(4)SE for high active material ratio in all solid sta.e *** replacement of Mg^(2+)by Al^(3+)in the framework yields vacancies and lowers the non-lithium meta. ions occupancy at Mg/Li co-occupied 16d site,effectively relieving the blocking effects by Mg^(2+)in the pristine spinel Li_(2-2x)Mg_(1+x)Cl_(4).Thus,a significantly improved room-temperature conductivity of 3.08×10^(-4)S·cm^(-1)is achieved,two orders of magnitude higher than that of Li_(1.2)Mg_(1.4)Cl_(4).More attractively,its low density of only 1.98 g·cm-3 enables low SE mass ratio in cathodes(only 16 wt.%)with still effective electrolyte/cathode conta.t and lithium-ion conduction *** charged to potential of 4.30 V,the asfabricated Li_(1.2)Mg_(0.95)Al_(0.3)Cl_(4)-based solid lithium battery with uncoated NCM523 cathode can be cycled for over 100 cycles with a capacity retention of 86.68%at room temperature.

关键词： chloride solid electrolytes low cost low density Li+conductivities

Construction of a High‑Performance Composite Solid Electrolyte Through In‑Situ Polymerization within a Self‑Supported Porous Garnet Framework

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Nano-Micro Letters 2024年第5期16卷 56-70页

作者： An‑Giang Nguyen Min‑Ho Lee Jaekook Kim Chan‑jin Park Department of Materials Science and Engineering Chonnam National University77 Yongbong‑roBuk‑guGwangju 61186South Korea

Composite solid electrolytes(CSEs)have emerged as promising candidates for safe and high-energy–density solid-sta.e lithium meta. batteries(SSLMBs).However,concurrently achieving exceptional ionic conductivity and interface compatibility between the electrolyte and electrode presents a significant challenge in the development of high-performance CSEs for *** overcome these challenges,we present a method involving the in-situ polymerization of a monomer within a self-supported porous Li_(6.4)La_(3)Zr_(1.4)ta.(0.6)O_(12)(LLZT)to produce the *** synergy of the continuous conductive LLZT network,well-organized polymer,and their interface can enhance the ionic conductivity of the CSE at room ***,the in-situ polymerization process can also con-struct the integration and compatibility of the solid electrolyte–solid electrode *** synthesized CSE exhibited a high ionic conductivity of 1.117 mS cm^(-1),a significant lithium transference number of 0.627,and exhibited electrochemical sta.ility up to 5.06 V ***/Li+at 30℃.Moreover,the Li|CSE|LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2) cell delivered a discharge capacity of 105.1 mAh g^(-1) after 400 cycles at 0.5 C and 30℃,corresponding to a capacity retention of 61%.This methodology could be extended to a variety of ceramic,polymer electrolytes,or battery systems,thereby offering a viable strategy to improve the electrochemical properties of CSEs for high-energy–density SSLMBs.

关键词： Scalable ta.e-casting method Self-supported porous Li_(6.4)La_(3)Zr_(1.4)ta.(0.6)O_(12) Composite solid electrolyte LiF-and B-rich interphase layers

Dynamic lithium-compensation mechanism for densification of garnet-type Li_(7)La_(3)Zr_(2)O_(12)electrolyte by Li_(2)O atmosphere buffer pair

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Nano Research 2024年第7期17卷 6184-6191页

作者： Chujun Zheng Ya Chen Haoxin Dong Yan Lu Jun jin Zhaoyin Wen CAS Key Laboratory of Materials for Energy Conversion Shanghai Institute of CeramicsChinese Academy of ScienceShanghai 200050China Sta.e Key Lab High Performance Ceram and Superfine Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

Solid-sta.e lithium meta. batteries are one of the most promising options for next-generation batteries pursuing high-energy density and ***,the inevita.le volatilization of lithium compounds during sintering leads to low relative density and low ionic conductivity of solid-sta.e ***,the dynamic lithium-compensation mechanism is proposed to facilita.e the densification of ta.substituted garnet-type electrolyte(Li_(6.5)La_(3)Zr_(1.5)ta.(0.5)O_(12)(LLZT))through the reversible manipulating of Li_(2)O ***_(2)ZrO_(3)is used as mother powder additive,which reacts with Li_(2)O in sintering atmosphere and forms Li_(6)Zr_(2)O_(7).Li_(2)ZrO_(3)/Li_(6)Zr_(2)O_(7)buffer pair manipulates the sintering Li_(2)O atmosphere,which is vita. for LLZT,within the Li_(2)O partial pressure range corresponding to Li_(2)ZrO_(3)and Li_(6)Zr_(2)O_(7).Furthermore,the reversibility mechanism of buffer pair for Li_(2)O absorption and release is *** obta.ned LLZT exhibits a relative density of over 96%and an ionic conductivity exceeding 7×10^(−4)S·cm^(−1)with no abnormal grain *** symmetric cell demonstrates an excellent lithium dendrite suppressing ability(sta.le cycling at a current density of 0.3 mA·cm^(−2)for over 1000 h).Such dynamic lithium-compensation strategy has been successfully applied in atmosphere manipulation of LLZT sintering process,which reduces the dependence of LLZT on the Li_(2)O atmosphere,making it conducive to large-scale preparation of electrolyte ceramics.

关键词： solid-sta.e batteries garnet-type electrolyte high-density electrolyte dynamic lithium-compensation buffer pair

Microstructural Evolutions and Mechanical Properties of Energetic Al_(1) (TiZrNbta.oCr)_(15) High-Entropy Alloys

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Acta.Meta.lurgica Sinica(English Letters) 2024年第4期37卷 620-632页

作者： Xuan-Hong Cai Zhen-Hua Wang Ben Niu jin-Feng Li Qing Wang Show authors Key Laboratory of Materials Modification By Laser Ion and Electron Beams(Ministry of Education)Engineering Research Center of High Entropy Alloy Materials(Liaoning Province)School of Materials Science and EngineeringDalian University of TechnologyDalian116024China Institute of Materials China Academy of Engineering PhysicsMianyang621908China

The present study focuses on investigating the microstructural evolutions and mechanical properties of energetic Al_(1)(TiZrNbta.oCr)_(15) refractory high-entropy alloys with the different heat treatments at low Al content sta.e. It is found that even with a reduction in the Al content, the strength of these alloys remains unaffected at room temperature and high temperature, while the plasticity improves significantly. In particular, the coherent BCC/B_(2) microstructure with needle-like B_(2) nanoprecipita.es dispersed into the BCC matrix is formed in 873 K-aged Al_(1)Ti_(6)Zr_(2)Nb_(3)ta.(3)Mo_(0.5)Cr_(0.5) alloy. Therefore, this alloy exhibits the highest compression yield strength (σ_(YS) = 1333 and 717 MPa) at room temperature and 1073 K, respectively. After 973 K-aged, the coherent BCC/B_(2) microstructure underwent desta.ilization, and the B_(2) phase transforms into the brittle Zr5Al3 phase which then coarsens and dominates the microstructure of S3-Alta.(3) alloy after 1073 K-aged. Moreover, these current alloys exhibit exceptionally high theoretical exothermic enthalpy (ΔH), surpassing 11606 J·g^(−1), which highlights their significant potential as innovative high-performance energetic structural materials.

关键词： Refractory high-entropy alloy Coherent microstructure Mechanical property Exothermic enthalpy

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“实用性阅读与交流”学习任务群的教学探索

语文教学之友 2024年第3期43卷 19-21页

作者：黄金塔福建省南安市洪梅中学

学习任务群是《义务教育语文课程标准》中的亮点之一,是发展和培养学生核心素养的关键要素。实施学习任务群中“实用性阅读与交流”板块的教学可有效强化学生对语文知识的理解和掌握,提升学生的表达能力,促进学生的全面成长。从搭设生... 详细信息

学习任务群是《义务教育语文课程标准》中的亮点之一,是发展和培养学生核心素养的关键要素。实施学习任务群中“实用性阅读与交流”板块的教学可有效强化学生对语文知识的理解和掌握,提升学生的表达能力,促进学生的全面成长。从搭设生活情境、重视实践教学等方面出发,探讨初中语文“实用性阅读与交流”学习任务群的教学路径,以期构建高效的语文课堂。

关键词：初中语文 “实用性阅读与交流” 学习任务群教学思考

The effect of Ti and Zr content on the structure,mechanics and energy-release characteristics of Ti—Zr—ta.alloys

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Defence Technology（防务技术） 2024年第1期31卷 343-350页

作者： Jia-yu Meng jing-zhi He Bin Zhang jin Chen Shun Li Dun Niu Yu ta.g Xi’an Modern Chemistry Research Institute Xi'an710065China College of Aerospace Science and Engineering National University of Defense TechnologyChangsha410073China

Energetic structural materials(ESMs)are a new type of structural materials with bearing and damage *** this work the microstructure,mechanical properties and energy release characteristics of multi-element Ti-Zr-ta.alloys with good casting performance were *** microstructure of the Ti_(x)Zrta.alloys gradually change from BCC+HCP to single BCC structure with the increase of *** the Ti_(2)Zr_(y)ta.alloys was still uniform and single BCC structure with the increase of *** evolution of microstructure and composition then greatly affect the mechanical properties and energy-release characteristics of Ti-Zr-ta.*** synergistic effect of dual phase structure increases the fracture strain of Ti_(x)Zrta.x=0.2,0.5)with the Ti content decreases,while the fracture strain of Ti_(x)Zrta.x=2.0,3.0,4.0)gradually increase with the Ti content increases caused by the annihilation of the obsta.les for dislocation *** as Zr content increases,the fracture strain of Ti_(2)Zr_(y)ta.alloys decrease,then the oxidation reaction rate and fragmenta.ion degree gradually *** higher oxidation rate and the lager exposed oxidation area jointly leads the higher releasing energy efficiency of Ti_(x)Zrta.alloys with low Ti content and Ti_(2)Zr_(y)ta.alloys with high Zr content.

关键词： Energetic structural materials Ti-Zr-ta Multi-element alloy Energy release characteristics

开发特色思政课程培育时代新人——以《马塘精神》校本课程为例

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福建教育学院学报 2024年第2期25卷 32-35页

作者：陈金塔厦门市新圩学校福建厦门361100

厦门市翔安区新圩镇马塘村是厦门“六精神”之“马塘精神”的根源地,具备丰富的地域文化和教育资源。厦门市新圩学校享有得天独厚的地域优势,有义务和责任积极开发具有地方特色的思政课程,培养具有文化自信、社会责任感和优秀道德品质... 详细信息

厦门市翔安区新圩镇马塘村是厦门“六精神”之“马塘精神”的根源地,具备丰富的地域文化和教育资源。厦门市新圩学校享有得天独厚的地域优势,有义务和责任积极开发具有地方特色的思政课程,培养具有文化自信、社会责任感和优秀道德品质的下一代。通过实施教学活动和评价,培养具有文化自信、社会责任感和优秀道德品质的时代新人。

关键词：地域资源思政课程教材开发评价设计

Enhanced Electrochemical Properties and Optimized Li^(+)Transmission Pathways of PEO/LLZTO-Based Composite Electrolytes Modified by Supramolecular Combination

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Energy & Environmenta. Materials 2024年第1期7卷 238-246页

作者： Zhengyi Lu Lin Peng Yi Rong Enli Wang Ruhua Shi Hongxun Yang Yadong Xu Ruizhi Yang Chao jin College of Energy Soochow Institute for Energy and Materials InnovationsSoochow UniversitySuzhou 215006China Jiangsu Runchao Energy Storage Technology Co. LtdZhenjiang 212050China

Poly(ethylene oxide)(PEO)and Li_(6.75)La_(3)Zr_(1.75)ta.(0.25)O_(12)(LLZTO)-based composite polymer electrolytes(CPEs)are considered one of the most promising solid electrolyte ***,agglomeration of LLZTO within PEO and lack of Li^(+)channels result in poor electrochemical ***,a functional supramolecular combination(CD-TFSI)consisting of activeβ-cyclodextrin(CD)supramolecular with self-assembled LiTFSI salt is selected as an interface modifier to coat LLZTO *** from vast H-bonds formed betweenβ-CD and PEO matrix and/or LLZTO,homogeneous dispersion and tight interface conta.t are ***,^(6)Li NMR spectra confirm a new Li^(+)transmission pathway from PEO matrix to LLZTO ceramic then to PEO matrix in the as-prepared PEO/LLZTO@CD-TFSI CPEs due to the typical cavity structure ofβ-*** a proof,the conductivity is increased from 5.3×10^(-4)S cm^(-1)to 8.7×10^(-4)S cm^(-1)at 60℃,the Li^(+)transference number is enhanced from 0.38 to 0.48,and the electrochemical sta.ility window is extended to 5.1 V versus Li/Li^(+).Li‖LiFePO_(4)CR2032 coin full cells and pouch cells prove the practical application of the as-prepared PEO/LLZTO@CD-TFSI *** work offers a new strategy of interface modifying LLZTO fillers with functional supramolecular combination to optimize PEO/LLZTO CPEs for solid lithium batteries.

关键词： conductivity interfacial sta.ility LLZTO fillers modification PEO matrix