检索结果-内蒙古大学图书馆

SSRN 2023年

作者： Wang, Xueling Zhang, Xuming Song, Hao Tang, Zihuan Pi, Chaoran Li, Jianping Gao, Biao Zheng, Yang Peng, Xiang Chu, Paul K. Huo, Kaifu The State Key Laboratory of Refractories and Metallurgy Institute of Advanced Materials and Nanotechnology Wuhan University of Science and Technology Wuhan430081 China School of Optical and Electronic Information Huazhong University of Science and Technology Wuhan430074 China Hubei Key Laboratory of Plasma Chemistry and Advanced Materials Hubei Engineering Technology Research Center of Optoelectronic and New Energy Materials Wuhan Institute of Technology Wuhan430205 China Department of Physics Department of Materials Science and Engineering Department of Biomedical Engineering City University of Hong Kong Tat Chee Avenue Kowloon Hong Kong

The development of earth-abundant electrocatalysts with Pt-like catalytic activity for the hydrogen evolution reaction (HER) is of great significance to green hydrogen production. Herein, a novel strategy is described to construct dual-phase nitride nanobelts composed of Mo2N and Ni0.2Mo0.8N by nitridation of Ni2+ intercalated MoO3 nanobelts. The Mo2N/Ni0.2Mo0.8N catalyst exhibits superior stability and a low overpotential of 26 mV at 10 mA cm-2 and Tafel slope of 31 mV dec-1 in both the alkaline electrolyte and simulated seawater, which is comparable to or better than that of the benchmark Pt/C catalyst. The excellent alkaline HER characteristics is attributed to the successful fabrication of the Mo2N/Ni0.2Mo0.8N heterostructure by the controlled Ni2+ concentration in the interlayer of MoO3 enabling Ni2+ to be inserted into the MoxN matrix without metal Ni segregation and structure collapse during nitridation. Density-functional theory (DFT) calculations and experiments reveal that the Mo2N/Ni0.2Mo0.8N interface with strong electronic interactions optimizes H adsorption/desorption yielding moderately weak bonding metal sites with positive ΔGH* as the catalytic centers in HER. The results reveal a simple strategy for the preparation of heterostructured nitride-based catalysts with Pt-like activity for hydrogen evolution. © 2023, The Authors. All rights reserved.

关键词： Heterojunctions

来源：评论

学校读者我要写书评

暂无评论

A Novel Cobweb-Like Sub-Grain Structured Al-Cu-Mg Alloy with High Strength-Plasticity Synergy

SSRN

引用

SSRN 2024年

作者： Song, Yufeng Zhang, Qin Li, Heng Yuan, Xudong Chen, Yuqiang Lu, Dingding Liu, Wenhui Hunan University of Science and Technology Xiangtan411201 China School of Marine Equipment and Mechanical Engineering Jimei University Xiamen361021 China State Key Laboratory of Solidification Processing School of Materials Science and Engineering Northwestern Polytechnical University Xi’an710072 China Shi-Changxu Innovation Center for Advanced Materials Institute of Metal Research Chinese Academy of Sciences Shenyang110016 China

Al-Cu-Mg alloys, as the most widely used lightweight structural materials, have been recognized as promising candidates in the transportation field for a low-carbon economy. However, the tensile strength and plasticity of alloys cannot be simultaneously improved to satisfy the requirements of continuously upgraded transportation vehicles. In this work, inspired by high-tensile strength and high plasticity of cobweb structure, a new cobweb-like sub-grain structure was developed in Al-Cu-Mg alloy by a successive solution, high-strain-rate rolling (4.4 s-1), cryogenic treatment (–196 °C) and aging process (SRCA). Notably, the tensile strength and plasticity of this alloy were superior to those reported in the current study. An ultrahigh Vickers hardness and tensile strength value of 206.2 Hv and 619.6 MPa, which were 39.8% and 31.8% higher than those of traditional T6 heat-treated Al-Cu-Mg alloys, were obtained after SRCA. Meanwhile, an increase in the elongation of this alloy from 4.31% to 8.23% (increase of 90.9%) was also achieved. More importantly, the high strength-plasticity ("double high") Al-Cu-Mg alloy was attributed to a cobweb-like sub-grain structure, which was proposed for the first time by employing reverse thinking to increase plasticity by elevating dislocations, due to the formation of high-density dislocations from high-strain-rate rolling and rearrangement effect of dislocations from cryogenic treatment. Furthermore, the strength-plasticity mechanism was verified through in-situ tensile Electron back scatter diffraction (EBSD), molecular dynamics (MD) simulations, and crystal plasticity (CP) models. The results indicated that the cobweb-like sub-grain structure, resembling countless walls, formed barriers that hindered the migration of dislocations towards high-angle grain boundaries (HAGBs) and absorbed them, thereby reducing the occurrence of stress concentration zones, i.e., the dislocation absorption mechanism and stress-strain sharing mechanism.

关键词： Magnesium alloys

来源：评论

学校读者我要写书评

暂无评论

The frontier of tungsten oxide nanostructures in electronic applications

引用

iScience 2024年第4期27卷 109535页

作者： Zhou, Siqi Yang, Zanhe Feng, Xiangyu Zuo, Jiaxin Wang, Nannan Thummavichai, Kunyapat Zhu, Yanqiu State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials School of Resources Environment and Materials Guangxi University Nanning 530004 China Department of Mathematics Physics and Electrical Engineering Faculty of Engineering and Environment Northumbria University Newcastle-upon-Tyne NE1 8ST United Kingdom

Electrochromic (EC) glazing has garnered significant attention recently as a crucial solution for enhancing energy efficiency in future construction and automotive sectors. EC glazing could significantly reduce the energy usage of buildings compared to traditional blinds and glazing. Despite their commercial availability, several challenges remain, including issues with switching time, leakage of electrolytes, production costs, etc. Consequently, these areas demand more attention and further studies. Among inorganic-based EC materials, tungsten oxide nanostructures are essential due to its outstanding advantages such as low voltage demand, high coloration coefficient, large optical modulation range, and stability. This review will summarize the principal design and mechanism of EC device fabrication. It will highlight the current gaps in understanding the mechanism of EC theory, discuss the progress in material development for EC glazing, including various solutions for improving EC materials, and finally, introduce the latest advancements in photo-EC devices that integrate photovoltaic and EC technologies. © 2024

关键词： Electronic materials materials chemistry

来源：评论

学校读者我要写书评

暂无评论

Layered Double Hydroxide Derived Cobalt-Iron Sulfide Heterostructures with Enhanced Reaction Kinetics for Use in Sodium-Ion Batteries

SSRN

引用

SSRN 2022年

作者： Ma, Jiahui Liu, Liu He, Tao Wu, Jun Dai, Junjie Dong, Yangtao Lei, Shulai Cai, Yurong The Key Laboratory of Advanced Textile Materials and Manufacturing Technology Ministry of Education National Engineering Lab for Textile Fiber Materials and Processing Technology School of Materials Science and Engineering Zhejiang Sci-Tech University Hangzhou310018 China Xiangyang Sunvalor Aerospace Films Co. Ltd. Xiangyang441057 China College of Electronics and Information Hangzhou Dianzi University Hangzhou310018 China Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices Hubei University of Arts and Science Xiangyang441053 China

Constructing well-designed heterojunction as anodes is an essential strategy for developing high-performance energy storage devices. In this study, CoS1.097/FeS heterostructures were prepared by a simple two-step hydrothermal method using layered double hydroxide as a precursor. The resulting product holds the hydrotalcite-like intercalated structure and heterogeneous composition, which boosts reaction kinetics of sodium ions by shortening the transport distance of Na+, unifying the direction of Na+ transport and accelerating Na+ transport rate. Meanwhile, owing to the advantages of the additional active sites, enhanced internal structure stability and alleviated volume expansion effect, the heterojunction shows excellent sodium storage characteristics,including high rate performance (564.1mAh g-1at 10 A g-1 ), good initial coulombic efficiency (80.65% at 0.5 A g-1 ) and long cycle performance (543.9mAh g-1 at 2 A g-1 after 450 cycles). Theoretical calculations are carried out to explore the possible sodium storage mechanisms. The job may provide a feasible idea to design and prepare anode materials for sodium-ion battery. © 2022, The Authors. All rights reserved.

关键词： Heterojunctions

来源：评论

学校读者我要写书评

暂无评论

Highly Stable and Encapsulation-Microstructural Cathode Enabled by Na-Halides for Superb All-Solid-state Na Batteries

SSRN

引用

SSRN 2023年

作者： Li, Lin Yao, Jingming Xu, Ruonan Yan, Xinlin Yu, Chuang Zhang, Long Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials College of Physics and Energy Fujian Normal University Fuzhou350117 China Clean Nano Energy Center State Key Laboratory of Metastable Materials Science and Technology Yanshan University Hebei Qinhuangdao066004 China Institute of Solid State Physics Vienna University of Technology Wiedner Hauptstr. 8-10 Vienna1040 Austria State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan430000 China

The emerging halide solid electrolytes (SEs) possess superior (electro)chemical oxidation stabilities compared to sulfide SEs, but the understanding on their good compatibility toward oxide active materials needs to be further studied. Here, we develop a type of Zr-doped Na3YbCl6 chloride SEs. The optimized composition gains a high ionic conductivity and broad electrochemical oxidation window. The in situ EIS-DRT and ex situ XPS analyses verify that the chloride as ionic additives in the cathode is highly compatible with NaCrO2. Importantly, it is revealed that the volume change in the cathode can act a position effect on the microstructure evolution. It promotes to form a special core-shell-like structure with homogeneous chloride encapsulating NaCrO2 grains. Such a soft intimate contact promotes a uniform ion transport and mitigate electrochemo-mechanical stresses. The prerequisites generating this specific microstructure are proposed. The main capacity loss of the assembled ASSNBs only occurs at the initial 50 cycles, induced by the irreversible O3→O'3 phase transition in NaCrO2. The chloride additives with a soft feature and high oxidation-stability allow a high-quality interface in the oxide cathode and an excellent cycling stability of the ASSNBs. © 2023, The Authors. All rights reserved.

关键词： Solid electrolytes

来源：评论

学校读者我要写书评

暂无评论

Reversible Al^(3+) storage mechanism in anatase TiO_(2) cathode material for ionic liquid electrolyte-based aluminum-ion batteries

引用

Journal of Energy Chemistry 2020年第12期29卷 72-80页

作者： Na Zhu Feng Wu Zhaohua Wang Liming Ling Haoyi Yang Yaning Gao Shuainan Guo liumin Suo Hong Li Huajie Xu Ying Bai Chuan Wu Beijing Key Laboratory of Environmental Science and Engineering School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Collaborative Innovation Center of Electric Vehicles in Beijing Beijing 100081China Guangdong Engineering and Technology Research Center for Advanced Nanomaterials School of Environment and Civil EngineeringDongguan University of TechnologyDongguan 523808GuangdongChina Key Laboratory for Renewable Energy Beijing Key Laboratory for New Energy Materials and DevicesInstitute of PhysicsChinese Academy of Sciences.Beijing 100190China Key Laboratory of Materials Processing and Mold Ministry of EducationZhengzhou UniversityZhengzhou 450002HenanChina

Rechargeable aluminum ion battery(AIB) with high theoretical specific capacity, abundant elements and low cost engages considerable attention as a promising next generation energy storage and conversion system. Nevertheless, to date, one of the major barriers to pursuit better AIB is the limited applicable cathode materials with the ability to store aluminum highly reversibly. Herein, a highly reversible AIB is proposed using mesoporous TiO2 microparticles(M-TiO2) as the cathode material. The improved performance of Ti O2/Al battery is ascribed to the high ionic conductivity and material stability, which is caused by the stable architecture with a mesoporous microstructure and no random aggregation of secondary particles. In addition, we conducted detailed characterization to gain deeper understanding of the Al^(3+) storage mechanism in anatase Ti O2 for AIB. Our findings demonstrate clearly that Al^(3+)can be reversibly stored in anatase TiO2 by intercalation reactions based on ionic liquid electrolyte. Especially, DFT calculations were used to investigate the accurate insertion sites of aluminum ions in M-Ti O2 and the volume changes of M-TiO2 cells during discharging. As for the controversial side reactions in AIBs, in this work, by normalized calculation, we confirm that M-Ti O2 alone participate in the redox reaction. Moreover, cyclic voltammetry(CV) test was performed to investigate the pseudocapacitive behavior.

关键词： Aluminum ion battery Anatase TiO_(2) Al-ion storage Intercalation reaction Pseudocapacitive behavior

来源：评论

学校读者我要写书评

暂无评论

Observation of charge to spin conversion in p-orbital InBi alloy

arXiv

引用

arXiv 2025年

作者： Li, Gen Zhang, Ying Xu, Xiaoguang Shen, Lei Feng, Zheng Meng, Kangkang Li, Ang Cheng, Lu He, Kang Tan, Wei Wu, Yong Wu, Yihong Jiang, Yong Key Laboratory of Advanced Materials and Devices for Post-Moore Chips Ministry of Education School of Materials Science and Engineering University of Science and Technology Beijing Beijing100083 China Department of Electrical and Computer Engineering National University of Singapore 117576 Singapore Research Institute Chongqing Liang Jiang New Area Chongqing401123 China Department of Mechanical Engineering National University of Singapore 117575 Singapore Microsystem & Terahertz Research Center CAEP Chengdu610200 China Faculty of Materials and Manufacturing Beijing Key Lab of Microstructure and Properties of Advanced Materials Beijing University of Technology Beijing100124 China Institute of Quantum Materials and Devices School of Electronic and Information Engineering State Key Laboratory of Separation Membranes and Membrane Processes Tiangong University Tianjin300387 China

High density data storage and spin-logic devices require highly efficient all-electric control of spin moment. So far, charge-to-spin conversion through the spin Hall effect limits to d-orbital materials associated with strong spin-orbit coupling, especially heavy metals. However, d-orbital heavy metals with strong spin-orbit coupling results in a short spin diffusion length, which restricts the spin transport and accumulation in spintronic devices. Therefore, the conflict between charge-to-spin conversion efficiency and spin transport ability is irreconcilable in d-orbital materials. Here, we report a large charge to spin conversion experimentally observed in the p-orbital In2Bi alloy, exhibiting the coexistence of a large spin Hall angle comparable to heave metal Pt and a long spin diffusion length (4 times that of Pt). First-principles calculations reveal that topological symmetry-protected gap opening near the Fermi level results in large Berry curvature-related spin Hall conductivity. Due to the delocalized nature of p-orbitals and semimetal properties of In2Bi, its spin current can overcome the physical barriers between spin Hall angle and spin diffusion length in d-orbital metals, thereby advancing the development of high-performance spintronic devices. Copyright © 2025, The Authors. All rights reserved.

关键词： Heavy metals

来源：评论

学校读者我要写书评

暂无评论

High-Output Water Flow Triboelectric Nanogenerator Based on Induction Electrification

SSRN

引用

SSRN 2024年

作者： Wu, Qian Wang, Wenpeng Zhang, Liqiang Wu, Xiaoqing Zhang, Xiaolong Wang, Daoai Shandong Laboratory of Advanced Materials and Green Manufacturing Yantai Yantai265503 China Center of Materials Sciences Opto-Electronic Technology University of Chinese Academy of Sciences Beijing100049 China Hubei Key Laboratory of Hydroelectric Machinery Design & Maintenance China Three Gorges University Yichang443002 China State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou730000 China Qingdao Center of Resource Chemistry and New Materials Qingdao266100 China

As a highly recognized novel energy-harvesting technology, solid–liquid triboelectric nanogenerators (SL-TENGs) have garnered widespread attention in the field of renewable energy. However, despite their relatively high performance in discharge collection, the issue of output instability persists in SL-TENGs, potentially posing latent risks to electronic devices. Simultaneously, during the collection of induced electricity, the output of SL-TENGs is comparably diminished although it remains relatively stable. To overcome these drawbacks, a high-speed, water flow-based triboelectric nanogenerator was developed in this study. This design employs a pulsatile form, leveraging the moment when high-speed waterflow swiftly infiltrates the polytetrafluoroethylene pipe wall, causing the water to blanket the entire pipe wall and subsequently diminish gradually. This process engenders a substantial potential difference, culminating in a conspicuous output peak. Through this innovative design, an excellent output performance with an instantaneous peak voltage of 2270 V and an instantaneous peak current of 141 μA is successfully achieved. This performance level is sufficient for directly illuminating 300 light-emitting diode lights or powering an 18 W commercial lamp. This research proposes a new method of energy harvesting based on inductive electricity. © 2024, The Authors. All rights reserved.

关键词： Nanogenerators

来源：评论

学校读者我要写书评

暂无评论

基于多孔灯心草纤维的高性能柔性磁性纺织品用于生物力学能量收集（英文）

引用

Engineering 2025年第3期 267-277页

作者： Junyao Gong Chunhua Zhang Liangjun Xia Zhaozixuan Zhou Weihao Long Zhuan Fu Sijie Zhou Hua Ji Lixin Du Weilin Xu State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University College of Textile Science and Engineering Zhejiang University of Science and Technology College of Textiles Donghua University Winner Medical Co. Ltd. Luthai Textile Co. Ltd.

Mechanical energy produced by human motion is ubiquitous,continuous,and usually not utilized,making it an attractive target for sustainable electricity-harvesting *** this study,flexible magnetic-Juncus effusus(M-JE) fibers were prepared from plant-extracted three-dimensional porous Juncus effusus(JE) fibers decorated with polyurethane and magnetic *** M-JE fibers were woven into fabrics and used for mechanical energy harvesting through electromagnetic *** M-JE fabric and induction coil,attached to the human wrist and waist,yielded continuous and stable voltage(2 V)and current(3 mA) during *** proposed M-JE fabric energy harvester exhibited good energy harvesting potential and was capable of quickly charging commercial capacitors to power small electronic *** proposed M-JE fabric exhibited good mechanical energy harvesting performance,paving the way for the use of natural plant fibers in energy-harvesting fabrics.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Hierarchically structured porous materials: synthesis strategies and applications in energy storage

引用

国家科学评论（英文版） 2020年第11期7卷 1667-1701页

作者： Liang Wu Yu Li Zhengyi Fu Bao-Lian Su State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China Laboratory of Inorganic Materials Chemistry (CMI) University of Namur Namur B-5000 Belgium

To address the growing energy demands of sustainable development,it is crucial to develop new materials that can improve the efficiency of energy storage *** structured porous materials have shown their great potential for energy storage applications owing to their large accessible space,high surface area,low density,excellent accommodation capability with volume and thermal variation,variable chemical compositions and well controlled and interconnected hierarchical porosity at different length *** hierarchy benefits electron and ion transport,and mass diffusion and *** electrochemical behavior of hierarchically structured porous materials varies with different pore *** their relationship can lead to the defined and accurate design of highly efficient hierarchically structured porous materials to enhance further their energy storage *** this review,we take the characteristic parameters of the hierarchical pores as the survey object to summarize the recent progress on hierarchically structured porous materials for energy *** is the first of this kind exclusively to survey the performance of hierarchically structured porous materials from different porous *** those who are not familiar with hierarchically structured porous materials,a series of very significant synthesis strategies of hierarchically structured porous materials are firstly and briefly *** will be beneficial for those who want to quickly obtain useful reference information about the synthesis strategies of new hierarchically structured porous materials to improve their performance in energy *** effect of different organizational,structural and geometric parameters of porous hierarchy on their electrochemical behavior is then deeply *** outline the existing problems and development challenges of hierarchically structured porous materials that need to be addressed in renewable energy a

关键词： hierarchically structured porous materials synthesis strategies energy storage porous parameters geometric configuration

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：