检索结果-内蒙古大学图书馆

A review on anode materials for lithium/sodium-ion batteries

Journal of Energy Chemistry 2023年第8期83卷 509-540,I0013页

作者： Abhimanyu Kumar Prajapati Ashish Bhatnagar Department of Physics and Materials Science and Engineering Jaypee Institute of Information TechnologyNoida 201309Indid

Since lithium-ion batteries(LIBs) have been substantially researched in recent years, they now possess exceptional energy and power densities, making them the most suited energy storage technology for use in developed and developing industries like stationary storage and electric cars, etc. Concerns about the cost and availability of lithium have prompted research into alternatives, such as sodium-ion batteries(SIBs), which use sodium instead of lithium as the charge carrier. This is especially relevant for stationary applications, where the size and weight of battery are less important. The working efficiency and capacity of these batteries are mainly dependent on the anode, cathode, and electrolyte. The anode,which is one of these components, is by far the most important part of the rechargeable *** of its characteristics and its structure, the anode has a tremendous impact on the overall performance of the battery as a whole. Keeping the above in view, in this review we critically reviewed the different types of anodes and their performances studied to date in LIBs and SIBs. The review article is divided into three main sections, namely:(i) intercalation reaction-based anode materials;(ii) alloying reaction-based anode materials;and(iii) conversion reaction-based anode materials, which are further classified into a number of subsections based on the type of material used. In each main section, we have discussed the merits and challenges faced by their particular system. Afterward, a brief summary of the review has been discussed. Finally, the road ahead for better application of Li/Na-ion batteries is discussed, which seems to mainly depend on exploring the innovative materials as anode and on the inoperando characterization of the existing materials for making them more capable in terms of application in rechargeable batteries.

关键词： Lithium/Sodium-ion batteries Anode materials Nanomaterials Metal-organic framework Conversion materials Intercalated materials Alloying materials

来源：评论

学校读者我要写书评

暂无评论

NJmat 2.0:User Instructions of Data-Driven Machine Learning Interface for materials science

引用

Computers, materials & Continua 2025年第4期83卷 1-11页

作者： Lei Zhang Hangyuan Deng Department of Internet Engineering School of Software EngineeringNanjing University of Information Science&TechnologyNanjing210044China Department of Materials Physics School of Chemistry and Materials ScienceNanjing University of Information Science&TechnologyNanjing210044China

NJmat is a user-friendly,data-driven machine learning interface designed for materials design and *** platform integrates advanced computational techniques,including natural language processing(NLP),large language models(LLM),machine learning potentials(MLP),and graph neural networks(GNN),to facili-tate materials *** platform has been applied in diverse materials research areas,including perovskite surface design,catalyst discovery,battery materials screening,structural alloy design,and molecular *** automating feature selection,predictive modeling,and result interpretation,NJmat accelerates the development of high-performance materials across energy storage,conversion,and structural ***,NJmat serves as an educational tool,allowing students and researchers to apply machine learning techniques in materials science with minimal coding *** automated feature extraction,genetic algorithms,and interpretable machine learning models,NJmat simplifies the workflow for materials informatics,bridging the gap between AI and experimental materials *** latest version(available at https://***/articles/software/NJmatML/24607893(accessed on 01 January 2025))enhances its functionality by incorporating NJmatNLP,a module leveraging language models like MatBERT and those based on Word2Vec to support materials prediction *** utilizing clustering and cosine similarity analysis with UMAP visualization,NJmat enables intuitive exploration of materials *** NJmat primarily focuses on structure-property relationships and the discovery of novel chemistries,it can also assist in optimizing processing conditions when relevant parameters are included in the training *** providing an accessible,integrated environment for machine learning-driven materials discovery,NJmat aligns with the objectives of the materials Genome Initiative and promotes broader adoption of AI techniques in materials science.

关键词： Data-driven machine learning natural language processing machine learning potential large language model

来源：评论

学校读者我要写书评

暂无评论

Surface engineering on MnO_(2)nanorods by La single atoms to accelerate oxygen reduction kinetics

引用

Rare Metals 2024年第9期43卷 4302-4311页

作者： Zhang-Long He Liu-Qi Wang Min Jiang Jia-Nan Xie Shan Liu Jin-Can Ren Rui Sun Wen-Bin Lv Wei-Bin Guo Yu-Ling Liu Bing Li Qi Liu Hao He School of Materials Science and Engineering Changsha University of Science and TechnologyChangsha 410000China School of Materials Science and Engineering Nanjing University of Science and TechnologyNanjing 210094China School of Materials Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Department of Physics City University of Hong KongHong Kong 999077China

Surface engineering,which modulates the electronic structure and adsorption/desorption properties of electrocatalysts,is one of the key strategies for improving the catalytic ***,we demonstrate a facile solid-phase reaction for surface engineering of MnO_(2)to boost the oxygen reduction *** reaction with surface hydroxy groups,La single atoms with loading amount up to 2.7 wt%are anchored onto a-MnO_(2)*** surface engineering,the oxygen reduction reaction(ORR)kinetics is significantly improved with the half-wave potential from 0.70 to 0.84 V,the number of transferred electrons from 2.5 to 3.9 and the limiting current density from 4.8 to 6.0 mA·cm^(-2).In addition,the catalyst delivers superior discharge performance in both alkaline and neutral metal–air *** functional theory(DFT)calculations reveal that atomic La modulates the surface electronic configuration of MnO_(2),reduces its d-band center and thus lowers the OOH*and O*reaction energy *** work provides a new route for rational design of highly active electrocatalyst and holds great potential for application in various catalytic reactions.

关键词： Surface engineering Single atoms Electron injection Oxygen reduction reaction Metal-air batteries

来源：评论

学校读者我要写书评

暂无评论

Designing(Hf,Ta)Fe_(2)-based zero thermal expansion composites consisting of multiple Laves phases

引用

Rare Metals 2024年第12期43卷 6596-6605页

作者： He Wang Yi-Han Wang Yuan-Yuan Gong Gui-Zhou Xu Er Liu Xue-Fei Miao Yu-Jing Zhang Yan-Yan Shao Jun Liu Najam UI Hassan Ishfaq Ahmad Shah Feng Xu MIIT Key Laboratory of Advanced Metallic and Intermetallic Materials Technology School of Materials Science and EngineeringNanjing University of Science and TechnologyNanjing210094China Division of Science and Technology Department of PhysicsUniversity of EducationLahore54770Pakistan Department of Physics Ghazi National Institute of Engineering and SciencesDG Khan10550Pakistan

MgZn_(2)-type(Hf,Ta)Fe_(2),known for its negative thermal expansion during magnetic transition,is a key component in the production of zero thermal expansion *** paper presents a basic approach for designing such composites by introducing an additional Laves phase through atomic ***,Co,Ni,A1 and V were chosen to substitute Fe in(Hf,Ta)Fe_(2).The addition of Co or Ni results in the creation of an extra MgCu_(2)(C15)phase in the MgZn_(2)(C14)*** C15phase exhibits positive thermal expansion,which effectively compensates for the negative thermal expansion of the C14 *** adjusting the amount of Co or Ni,zero thermal expansion can be achieved in a given temperature ***,the replacement of Fe by Al or V yields another C14 phase with a higher doping element content relative to the C14 *** two C14 phases possess different magnetic transition temperatures and negative thermal expansion temperature *** combination of the two C14 phases results in zero thermal expansion due to the effective thermal expansion compensation between *** results serve to identify potential approaches for designing(Hf,Ta)Fe_(2)-based zero thermal expansion composites.

关键词： Zero thermal expansion Negative thermal expansion (Hf,Ta)Fe_(2)compounds Laves phase

来源：评论

学校读者我要写书评

暂无评论

Formation mechanism of quasiordered superstructures of electric bubbles

引用

Physical Review B 2025年第6期111卷 L060305-L060305页

作者： Maxim A. Makeev Suyash Rijal Yousra Nahas Sergei Prokhorenko Laurent Bellaiche Smart Ferroic Materials Center Physics Department Institute for Nano-science and Engineering University of Arkansas Fayetteville Arkansas 72701 USA Department of Materials Science and Engineering Tel Aviv University Ramat Aviv Tel Aviv 6997801 Israel

The phenomenon of spontaneous formation of quasihexagonal arrays of electric bubbles in systems of electric dipoles subjected to an external electric field bias is studied via ab initio-based simulations of ultrathin ferroelectric films. We find that the formation of such topologically nontrivial superstructures is driven by development and evolution of soft-mode triplets with equal wavelengths and eigenfrequencies. The concurrent development of these soft-modes takes place above the transition point and the soft-modes become frozen-in near the transition temperature, where frequencies of the soft modes attain a minimum value. A further gradual cooling (or heating) of the superstructures leads to an increase in the soft-mode frequencies, following a square root law around the transition point. We quantify the thermal behavior of the degree of quasihexagonal ordering and find that the dipole structure factor intensities show the same critical behavior around the transition point as the soft-mode frequencies. The critical behavior, associated with the topological changes, is consistent with the Landau theory of phase transitions.

关键词： Ferroelectric films

来源：评论

学校读者我要写书评

暂无评论

Advancing first-principles dielectric property prediction of complex microwave materials:an elemental-unit decomposition approach

引用

npj Computational materials 2024年第1期10卷 1408-1413页

作者： Yabei Wu Peihong Zhang Wenqing Zhang Department of Materials Science and Engineering and Guangdong Provincial Key Lab for Computational Science and Materials Design Southern University of Science and TechnologyShenzhenGuangdongChina Department of Physics University at BuffaloState University of New YorkBuffaloNYUSA

Tungsten-bronze-type material Ba_(6-3x)RE_(8+2x)Ti_(18)O_(54),(RE=rare earth elements)is an important microwave dielectric that has shown great promises for future miniaturization of microwave devices because of its high dielectric constant,low loss,and tunabilities,and there is still much room for *** their proven predictive power,first-principles calculations may greatly help accelerate materials optimization by reducing or eliminating the expensive and time-consuming experimental trial-and-error ***,microwave dielectrics such as the tungsten-bronzetype materials are rather complex systems with unit cells containing hundreds or thousands of atoms,making ab initio calculations prohibitively *** this work,we propose an elemental-unit decomposition(EUD)technique that can drastically reduce the computational effort of predicting the properties of complex microwave dielectrics and demonstrate its accuracy and *** approach facilitates first-principles prediction and design of complex microwave dielectric materials that would otherwise be extremely difficult.

关键词： microwave dielectric prediction

来源：评论

学校读者我要写书评

暂无评论

Hierarchically porous 3D Y-branched carbon tube grids for high-performance filter capacitors

引用

science China(Technological sciences) 2025年第4期68卷 49-58页

作者： Gan CHEN Fangming HAN Guowen MENG Bingqing WEI Key Laboratory of Materials Physics and Anhui Key Laboratory of Nanomaterials and NanotechnologyInstitute of Solid State PhysicsHFIPSChinese Academy of SciencesHefei 230031China Department of Materials Science and Engineering University of Science and Technology of ChinaHefei 230026China Department of Mechanical Engineering University of DelawareNewark DE 19716USA

The rapid development of sustainable green energy,which often generates fluctuating electrical signals,has driven the demand for high-performance filter capacitors in alternating/direct current *** bulky aluminum electrolytic capacitors with electric double-layer capacitors(EDLCs)holds promise for electronics ***,EDLCs face a trade-off between charge storage ability and ion/electron transport ***,we demonstrate three-dimensional Y-branched carbon tube(3D-YCT)grids with a hierarchically porous structure as electrodes for line-filtering *** branching patterns and positions within the 3D-YCT are precisely tailored through the nanochannels inside anodic aluminum oxide *** integrated 3D Y-branched CT arrays provide unobstructed pathways for fast frequency response and extensive surfaces for high *** resulting 3D-YCT-based EDLC achieves a desirable specific areal capacitance(C_(A))of 3.6 mF cm^(-2)with a phase angle of-80°at 120 Hz,outperforming most reported line-filtering EDLCs and demonstrating excellent line-filtering *** findings offer valuable insights for constructing miniaturized filter capacitors.

关键词： hierarchically porous structures three-dimensional Y-branched carbon tube grids fast frequency response electric double-layer capacitors AC line-filtering

来源：评论

学校读者我要写书评

暂无评论

Imaging and structure analysis of ferroelectric domains,domain walls,and vortices by scanning electron diffraction

引用

npj Computational materials 2024年第1期10卷 2154-2161页

作者： Ursula Ludacka Jiali He Shuyu Qin Manuel Zahn Emil Frang Christiansen Kasper A.Hunnestad Xinqiao Zhang Zewu Yan Edith Bourret István Kézsmárki Antonius T.Jvan Helvoort Joshua Agar Dennis Meier Department of Materials Science and Engineering NTNU Norwegian University of Science and TechnologyTrondheimNorway Department of Computer Science and Engineering Lehigh UniversityBethlehemPAUSA Department of Mechanical Engineering and Mechanics Drexel UniversityPhiladelphiaPAUSA Experimental Physics V University of AugsburgAugsburgGermany Department of Physics NTNU Norwegian University of Science and TechnologyTrondheimNorway Department of Physics ETH ZurichZürichSwitzerland Materials Sciences Division Lawrence Berkeley National LaboratoryBerkeleyCAUSA

Direct electron detectors in scanning transmission electron microscopy give unprecedented possibilities for structure analysis at the *** electronic and quantum materials,this new capability gives access to,for example,emergent chiral structures and symmetry-breaking distortions that underpin functional *** nanoscale structural features with statistical significance,however,is complicated by the subtleties of dynamic diffraction and coexisting contrast mechanisms,which often results in a low signal-to-noise ratio and the superposition of multiple signals that are challenging to deconvolute.

关键词： properties structure ferroelectric

来源：评论

学校读者我要写书评

暂无评论

Harnessing the flatbandλ-Ti_(3)O_(5):A breakthrough in solar steam generation

引用

science China materials 2023年第11期66卷 4515-4516页

作者： Chuxin Lei Guihua Yu Materials Science and Engineering Program and Walker Department of Mechanical Engineering The University of Texas at AustinAustinTX 78712USA

As global population rises,accompanied by escalating environmental pollution and climate change,numerous countries find themselves grappling with an acute scarcity of natural freshwater resources^([1]).Seawater desalination presents a compelling solution to this looming crisis,especially considering the oceans are Earth’s largest water reservoir^([2]).

关键词： reservoir Earth breakthrough

来源：评论

学校读者我要写书评

暂无评论

Visualization of oxygen vacancies in nanomaterials

引用

science China materials 2024年第11期67卷 3753-3754页

作者： Wenchao Bi Kaixuan Wang Guozhong Cao Department of Physics College of ScienceUniversity of Shanghai for Science and TechnologyShanghai 200093China Departments of Materials Science and Engineering and Chemical Engineering University of WashingtonSeattleWA 98195-2120USA

Oxygen vacancies are one of the most common *** are imperfections in the regular geometrical arrangement of the atoms in crystalline *** are point defects,linear defects,plane defects and volume defects in *** an elemental crystal,point defects are formed when atoms are removed from the position that should be filled in the crystal,creating vacancies,or when atoms occupy interstitial sites where no atom would ordinarily appear,causing interstitialcy[1].

关键词： crystal removed arrangement

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：