检索结果-内蒙古大学图书馆

SSRN 2024年

作者： Liu, Yan Zhong, Zhengxiang Liang, Cuiyuan Wang, Fanyu Xu, Hongbo Wan, Ye Ma, Xinzhi Tian, Gongwei Qi, Dianpeng MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage National and Local Joint Engineering Laboratory for Synthesis Transformation and Separation of Extreme Environmental Nutrients School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin150001 China Key Laboratory of Science and Engineering for the Multi-modal Prevention and Control of Major Chronic Diseases Ministry of Industry and Information Technology Zhengzhou Research Institute Harbin Institute of Technology Zhengzhou450000 China China Silicon Coporation Ltd. China ENFI Engineering Coporation Ltd Luoyang471003 China Key Experiment of Optoelectronic Bandgap Materials Ministry of Education Harbin Normal University Harbin150500 China

Owing to the good sensitivity and simple fabrication process, flexible piezoresistive pressure sensors based on aerogels shows great applications in soft robotics, bioelectronics and so on. However, the poor compressibility and stability of the aerogel is still challenging the development of aerogel based flexible piezoresistive pressure sensors, simultaneously, it is urgent to pave a way to enhance the sensitivity of these sensors. Here, for the first time, we propose a universal strategy to prepare aerogel skeleton-elastomer shell hybrid porous material with enhanced compressibility for high-sensitive and stable flexible pressure sensors. We found that the elastomer shell disperses the strain in the aerogel skeleton and enhances the compressibility of the aerogel, which improve the stability of the sensor (10000 cycles of compression). More importantly, there are elastomer micro-blocks formed in the hybrid material, these micro-blocks redistribute the strain in the material which contributes to the high sensitivity (10.25 kPa-1) of the sensors. Furthermore, the sensors are successful in monitoring both of the large joint bending and subtle skin vibration, as well as remote controlling toy car and artificial hand. This work provides an effective and universal strategy to enhance the sensitivity and stability of the aerogel based flexible pressure sensors and promotes their development towards practical applications. © 2024, The Authors. All rights reserved.

关键词： Aerogels

来源：评论

学校读者我要写书评

暂无评论

CsPbBr_(3)quantum dots/PDVT-10 conjugated polymer hybrid film-based photonic synaptic transistors toward high-efficiency neuromorphic computing

引用

Science China materials 2022年第11期65卷 3077-3086页

作者： Congyong Wang Qisheng Sun Gang Peng Yujie Yan Xipeng Yu Enlong Li Rengjian Yu Changsong Gao Xiaotao Zhang Shuming Duan Huipeng Chen Jishan Wu Wenping Hu Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityBinhai New CityFuzhou 350207China Department of Chemistry National University of Singapore3 Science Drive 3Singapore 117543Singapore Tianjin Key Laboratory of Molecular Optoelectronic Sciences Department of ChemistrySchool of ScienceTianjin University&Collaborative Innovation Center of Chemical Science and Engineering(Tianjin)Tianjin 300072China Institute of Optoelectronic Display National&Local United Engineering Lab of Flat Panel Display TechnologyFuzhou UniversityFuzhou 350002China Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350100China School of Materials Science and Engineering Xiamen University of TechnologyXiamen 361024China

Photonic synaptic transistors are promising neuromorphic computing systems that are expected to circumvent the intrinsic limitations of von Neumann-based *** design and construction of photonic synaptic transistors with a facile fabrication process and highefficiency information processing ability are highly desired,while it remains a tremendous ***,a new approach based on spin coating of a blend of CsPbBr_(3) perovskite quantum dot(QD)and PDVT-10 conjugated polymer is reported for the fabrication of photonic synaptic *** combination of flat surface,outstanding optical absorption,and remarkable charge transporting performance contributes to high-efficiency photon-to-electron conversion for such perovskite-based ***-performance photonic synaptic transistors are thus fabricated with essential synaptic functionalities,including excitatory postsynaptic current(EPSC),paired-pulse facilitation(PPF),and long-term *** utilizing the photonic potentiation and electrical depression features,perovskite-based photonic synaptic transistors are also explored for neuromorphic computing simulations,showing high pattern recognition accuracy of up to 89.98%,which is one of the best values reported so far for synaptic transistors used in pattern *** work provides an effective and convenient pathway for fabricating perovskite-based neuromorphic systems with high pattern recognition accuracy.

关键词： CsPbBr_(3)quantum dots photonic synaptic transistor synaptic functionalities neuromorphic computing pattern recognition accuracy

来源：评论

学校读者我要写书评

暂无评论

Perovskite-Type La0.6sr0.4co0.2fe0.8o3-Δ as an Artificial Interphase Layer for Dendrite-Free Li Metal Anodes

SSRN

引用

SSRN 2022年

作者： Wu, Qichen Wang, Gang Huang, Qiao Xie, Shuhong Huang, Jianyu Wang, Xianyou Key Laboratory of Low Dimensional Materials and Application Technology Ministry of Education School of Materials Science and Engineering Xiangtan University Hunan Xiangtan411105 China National Base for International Science & Technology Cooperation National Local Joint Engineering Laboratory for Key Materials of New Energy Storage Battery Hunan Province Key Laboratory of Electrochemical Energy Storage & Conversion School of Chemistry Xiangtan University Hunan Xiangtan411105 China

Lithium (Li) metal is considered as one of the most exciting anode materials for next-generation batteries because of its high theoretical capacity and lowest reduction potential. However, the uncontrollable dendrite growth associated with nonuniform deposition and huge volume change during cycling severely hampers its practical application in Li metal batteries. Herein, the perovskite-type La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3-δ (LSCF) oxide is proposed as an artificial interphase layer to decorate copper directly via tape-casting method for uniform Li deposition. The positively charged oxygen vacancies (PCOVs) originated from the LSCF can serve as natural electrostatic shield for Li deposition to the adjacent regions in order to achieve a uniform and dendrite-free Li deposition morphology. Moreover, LSCF nanoparticles can firmly affix to Cu foil surface through elements inter-diffusion at the LSCF/Cu interface during heat treatment process, which facilitate Li ion transport and accommodate Li deposition behavior. As a result, the LSCF decorated Cu foil (denoted as LSCF-Cu) exhibits stable Coulombic efficiency (CE) of 98.51% beyond 300 cycles in Li||Cu cells and stable Li plating/stripping for 2850 h with low hysteresis voltage of 15 mV in symmetric cells. Further, the full cell coupled with LiNi 0.6 Co 0.2 Mn 0.2 O 4 (NCM) cathode (N/P is 4.17) exhibits a low polarization and prolonged cycle life. Therefore, this strategy will lay the foundation for designing advanced artificial interphase layer for dendrite-free Li and other metal batteries. © 2022, The Authors. All rights reserved.

关键词： Deposition

来源：评论

学校读者我要写书评

暂无评论

Improving the Electrochemical Performance of Li-S Batteries Via a Mnco2s4-Cos1.097 Heterostructure with Hollow Structure and High Catalytic Activity

SSRN

引用

SSRN 2022年

作者： Wang, Xianyou Zhou, Xi Zeng, Peng Yu, Hao Liu, Jiali Miao, Changqing Chen, Manfang Su, Jincang National Base for International Science & Technology Cooperation National Local Joint Engineering Laboratory for Key Materials of New Energy Storage Battery Hunan Province Key Laboratory of Electrochemical Energy Storage & Conversion School of Chemistry Xiangtan University Xiangtan411105 China School of Chemistry & Material Engineering Xinxiang University Henan 453003 China

Rechargeable Lithium-sulfur (Li-S) batteries are considered as one of the most promising candidate materials for the next generation of energy storage devices due to their high theoretical specific capacity and energy density. However, the insulation of sulfur and Li 2 S 2 /Li 2 S, and the shuttle effect of higher-order lithium polysulfide (LiPSs) severely hinder its practical application. The design and preparation of advanced S host skeleton with both high absorbability and catalytic activity is urgently needed. In this work, the hollow tubular MnCo 2 S 4 -CoS 1.097 heterostructure composite is explored as the effective sulfur host to provide more chemisorption sites so that limit the dissolution and shuttle of LiPSs as well as accelerate the kinetics of Li-S batteries redox reaction. It has been found that the unique hollow structure can effectively alleviate the changes of volume in the process of discharging/charging. As a consequence, the assembled cathode based on the MnCo 2 S 4 -CoS 1.097 heterostructure host exhibits a prominent discharge specific capacity of 1436 mAh g -1 at 0.1 C, and the initial specific capacity is 973 mAh g -1 at a high rate of 1 C. In addition, it can still maintain a capacity of 796 mAh g -1 at the current rate of 1 C even after 200 cycles with a capacity retention rate of 82%. Especially, the MnCo 2 S 4 -CoS 1.097 /S cathode is fully operational even at a high sulfur load of 5.5 mg cm -2 . Therefore, this work highlights a new strategy for the rational design of heterostructure and provides a new idea for industrial applications of Li-S batteries. © 2022, The Authors. All rights reserved.

关键词： Cathodes

来源：评论

学校读者我要写书评

暂无评论

Flexible and Free-Standing La0.33ti2(Po4)3/C Nanofibers Film as a Novel High-Performance Anode for Sodium and Potassium Ion Batteries

SSRN

引用

SSRN 2022年

作者： Dai, Jing Jing, Jian Yang, Jianping Zhang, Wen Liu, Shaoxiong Wang, Qianfu Wen, Jiaxing Hu, Hai Li, Huifang Liu, Li National Base for International Science & Technology Cooperation National Local Joint Engineering Laboratory for Key materials of New Energy Storage Battery Hunan Province Key Laboratory of Electrochemical Energy Storage and Conversion School of Chemistry Xiangtan University Xiangtan411105 China College of Electromechanical Engineering Shandong Engineering Laboratory for Preparation and Application of High-performance Carbon-Materials Qingdao University of Science & Technology Qingdao266061 China School of Materials Science and Engineering Changsha University of Science & Technology Changsha410114 China

NASICON-type La0.33Ti2(PO4)3 (LaTP) is firstly proposed as sodium/potassium storage materials. The density functional theory calculations results show that LaTP has good electronic character and low Na+/K+ migration barriers. The flexible La0.33Ti2(PO4)3/C nanofibers film is synthesized via electrostatic spinning and investigated as free-standing electrode applied to sodium ion batteries (SIBs) and potassium ion batteries (PIBs). The low band gap and Na+/K+ migration barriers of LaTP, unique morphology, and complete conductive carbon net allow the La0.33Ti2(PO4)3/C nanofibers film with high capacity (296.3 mAh g-1 for SIBs and 235.8 mAh g-1 for PIBs), excellent rate performance (142.5 mAh g-1 for SIBs and 50.5 mAh g-1 for PIBs at 1 A g-1), and superior cyclability above 1000 cycles. The full cell tests show that the material has a good application prospect, indicating a promising flexible anode material for SIBs and PIBs. © 2022, The Authors. All rights reserved.

关键词： Potential energy

来源：评论

学校读者我要写书评

暂无评论

Microstructural evolution and FCC twinning behavior during hot deformation of high temperature titanium alloy Ti65

引用

Journal of materials Science & technology 2020年第14期47卷 56-69页

作者： Zhixin Zhang Jiangkun Fan Bin Tang Hongchao Kou Jian Wang Xin Wang Shiying Wang Qingjiang Wang Zhiyong Chen Jinshan Li State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi’anShaanxi710072China National&Local Joint Engineering Research Center for Precision Thermoforming Technology of Advanced Metal Materials Xi’anShaanxi710072China Baoti Group Ltd. BaojiShaanxi721014China School of Materials Science and Engineering Changzhou UniversityChangzhouJiangsu213164China Institute of Metal Research Chinese Academy of SciencesShenyangLiaoning 110016China

Although the development of titanium alloys with working temperatures above 600?C faces enormous difficulties and challenges,the related research has not *** the present work,detailed analyses on microstructure evolution and hot deformation behavior of a new temperature resistant 650?C titanium alloy Ti65 were investigated from micrometer scale to nanometer *** results revealed that lamellarαgrains gradually fragmentized and spheroidized during theα+βphase region compression and the orientation of the c-axis ofαgrains gradually aligned to radial directions,forming two high Schmid factors(SFs)value texture eventually with the increase of strain to ***,there were some strengthening characters in theα+βphase region such as lenticularαsand nano silicide(TiZr)6 *** theβphase region,fine equiaxed dynamic recrystallized(DRX)βgrains were ***,the variant selection ofαm′artensite followed Burgers orientation relationship during the compression *** main deformation mechanisms of theα+βphase region were dislocation slip and orientation dependent ***,the deformation process in theβphase region was controlled byβgrain ***,many nano scale FCC twins were generated at the interface ofαl′ath during deforming in theβphase region,which was firstly observed in Ti65 alloy.

关键词： High temperature titanium alloy Hot deformation Microstructure evolution Texture FCC twin

来源：评论

学校读者我要写书评

暂无评论

Sers-Lateral Flow Immunoassay Based on Aunr@Ag@Sio2-Aunp Assembly for Ultra-Sensitive Detection of Deoxynivalenol in Grain

SSRN

引用

SSRN 2024年

作者： Zhao, Zhilei Ren, Mengyu Zhang, Wenqi Chen, Zikuo Zhang, Lu Qu, Xinquan Shi, Junling Xia, Weiwei Xu, Xiaoguang Yang, Ying School of Quality and Technical Supervision Hebei University Baoding071000 China School of Traditional Chinese Medicine Hebei University Baoding071000 China National&Local Joint Engineering Research Center of Metrology Instrument and System Hebei University Baoding071000 China Hebei Key Laboratory of Energy Metering and Safety Testing Technology Hebei University Baoding071000 China Key Laboratory for Space Bioscience and Biotechnology School of Life Sciences Northwestern Polytechnical University Xi'An710072 China Shaanxi Materials Analysis and Research Center School of Materials Science and Engineering Northwestern Polytechnical University Xi'An710000 China

In view of the serious harm and widespread pollution caused by deoxynivalenol (DON), it is crucial to quantify its presence in the food safety assessment process. Here, we designed a core-shell-satellite nano assembly structure as a probe, composed of an anisotropic AuNR@Ag core, an ultra-thin SiO2 layer and a high surface coverage AuNPs satellites, which showed outstanding SERS activity and high stability. Anti-DON antibodies were modified on the surface of the prepared core-shell-satellite nano-assembly structure as SERS immunoprobe for DON specific detection using SERS-based lateral flow immunoassay (LFIA) with the advantages of simplicity, rapidity, and high sensitivity. Under optimal conditions, the detection limit for detecting DON using the SERS-LFIA method was 0.053 fg/mL, and the linear detection ranged from 0.1 fg/mL to 1 μg/mL. The SERS-LFIA strips based on AuNR@Ag@SiO2-AuNP nanostructures demonstrated the great potential for quick quantitative DON detection, providing a reference for trace detection of highly toxin mycotoxins. © 2024, The Authors. All rights reserved.

关键词： Satellites

来源：评论

学校读者我要写书评

暂无评论

Interlayer Ag+ and In-Situ Ag Metal Particles Synergistically Strengthening Mno2 Cathode Performance for Aqueous Zinc-Ion Batteries

SSRN

引用

SSRN 2022年

作者： Zhang, Keqing Chen, Hangda Yan, Wei Liu, Yanpeng Yang, Wenjing Gao, Jibing Hu, Changfa Xiao, Baoquan Shen, Zhan Liu, Guohan Huang, Juanjuan Peng, Shanglong National & Local Joint Engineering Laboratory for Optical Conversion Materials and Technology School of Materials and Energy Lanzhou University Lanzhou730000 China Shanghai Electrochemical Energy Devices Research Center Department of Chemical Engineering Shanghai Jiao Tong University Shanghai200240 China Institute of Sensor Technology Gansu Academy of Sciences Lanzhou730000 China

Layered manganese oxide has rich active sites, amounts of variable valence states and economic feasibility, so it has attracted wide attention. In aqueous zinc ion batteries, its poor conductivity and easy solubility in water limit its performance as an electrode. Therefore, we used a simple one-step hydrothermal method to prepare Ag+ intercalated MnO2 for aqueous zinc-ion batteries cathode. In-depth exploration of the electrochemical phenomenon of Ag-MnO2 found that: Interlayer Ag+ regulates the electronic structure of MnO2 and reduces the Jahn-Teller effect;the desolvation of Ag-MnO2 is easier, which promotes the embedding of Zn2+ . In addition, the migration of Ag+ and the in-situ formation of Ag metal particles also enhances the conductivity of the electrode. As a result of Ag +-Ag 0 synergistic effect, Ag-MnO2 has obtained high rate performance (275.6 mAh g-1 at 200 mA g-1 ) and excellent cycle stability (98.8% capacity retention over 600 cycles at 1000 mA g-1 ). This provides new insights for the pre-inserted Ag+ to improve the electrochemical performance of MnO2 . © 2022, The Authors. All rights reserved.

关键词： Manganese oxide

来源：评论

学校读者我要写书评

暂无评论

Effects of Triple Modification Of Sodium Hypophosphite on Structure and Electrochemical Performances of Lithium-Rich Manganese-Based Cathode materials

SSRN

引用

SSRN 2022年

作者： Li, Heng Cao, Shuang Li, Zhi Wu, Chao Chen, Jiarui Guo, Xiaowei Chang, Baobao Wang, Xianyou National Base for International Science & Technology Cooperation National Local Joint Engineering Laboratory for Key Materials of New Energy Storage Battery Hunan Province Key Laboratory of Electrochemical Energy Storage & Conversion School of Chemistry Xiangtan University Xiangtan411105 China School of Chemistry & Materials Engineering Xinxiang University Henan 453003 China Key Laboratory of Materials Processing Mold of Ministry of Education Zhengzhou University Henan 450001 China

Oxygen-anion charge compensation enables lithium-rich manganese-based cathode materials (LRMCs) to possess higher specific capacity than other conventional layered oxide cathode materials. However, irreversible oxygen redox makes LRMCs suffer from the oxygen loss, structure degradation and interfacial reactions, and thus resulting in low initial coulombic efficiency (ICE), poor cyclic stability and rate capacity. In order to suppress the irreversible anionic redox, herein Li1.2Mn0.54Ni0.13Co0.13O2 (LMNCO) is triply modified with sodium hypophosphite (NaH2PO2) through interfacial reaction. The results show that optimum content of NaH2PO2 is 5 wt%, and the reducing gas PH3 produced by NaH2PO2 decomposition can react with the unstable surface oxygen and transition metal ions to form stable LiTMPO4 protection layer and generate oxygen vacancies, and in the same time Na+ can purposely be doped into the Li position of LMNCO. Accordingly, the electrochemical performance of the surface-treated LMNCO-NP 5% is distinctly improved. It has been found that LMNCO-NP 5% displays an ICE of 88.94%, which is much higher than untreated LMNCO (78.2%). Meanwhile, the capacity retentions of LMNCO-NP 5% at 1 C and 5 C after 100 cycles are 94.85% and 78.45%, respectively. Therefore, the triple modification strategy based on the formation of LiTMPO4 protection layer, generation of oxygen vacancies and Na+ ion surface doping can effectively inhibit the TMs migration and irreversible anionic redox, and thus promoting the electrochemical performances of LRMCs. © 2022, The Authors. All rights reserved.

关键词： Cathodes

来源：评论

学校读者我要写书评

暂无评论

Greatly promoted oxygen reduction reaction activity of solid catalysts by regulating the stability of superoxide in metal-O_(2)batteries

引用

Science China materials 2021年第4期64卷 870-879页

作者： Hua Wang Liangliang Liu Xiao Liu Yu Jia Peng Zhang Yong Zhao Key Lab for Special Functional Materials of Ministry of Education National&Local Joint Engineering Research Center for High-efficiency Display and Lighting TechnologySchool of Materials Science and EngineeringCollaborative Innovation Center of Nano Functional Materials and ApplicationsHenan UniversityKaifeng 475004China Department of Materials Science&Engineering ShenzhenKey Laboratory of Solid State Batteries ShenzhenGuangdong Provincial Key Laboratory of Energy Materials for Electric PowerSouthern University of Science and TechnologyShenzhen 518055China College of Chemistry and Molecular Sciences Hubei Key Laboratory of Electrochemical Power SourcesWuhan UniversityWuhan 430072China

Oxygen reduction reactions(ORRs)with one-or two-electron-transfer pathways are the essential process for aprotic metal-oxygen batteries,in which the stability of superoxide intermediates/products(O_(2)^(-),LiO_(2),NaO_(2),etc.)mainly dominates the ORR activity/stability and battery ***,little success in regulating the stability of the superoxides has been achieved due to their highly reactive ***,we identified and modulated the stability of superoxides by introducing anthraquinone derivatives as cocatalysts which functioned as superoxide trapper adsorbing the superoxides generated via surface-mediated ORR and then transferring them from the solid catalyst surface into *** the studied trappers,1,4-difluoroanthraquinone(DFAQ)with electron-withdrawing groups showed the highest adsorption towards superoxides and could efficiently stabilize LiO_(2)in electrolyte,which greatly promoted the surface-mediated ORR rate and *** highlighted the magnitude of adsorption between the trapper and LiO_(2)on the ORR activity/*** an aprotic Li-O_(2)battery as a model metal-O_(2)battery,the overall performance of the cell with DFAQ was substantially improved in terms of cell capacity,rate capability and cyclic *** results represent a significant advance in the understanding of ORR mechanisms and promoting the performance of metal-O_(2)batteries.

关键词： oxygen reduction reaction adsorption energy superoxide lithium oxygen battery

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：