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Recent progress and prospective on layered anode materials for potassium-ion batteries

International Journal of Minerals,Metallurgy and Materials 2022年第5期29卷 1037-1052页

作者： Ke Guo Wei Wang Shuqiang Jiao Institute of Advanced Structure Technology Beijing Institute of TechnologyBeijing 100081China State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China

Potassium-ion batteries(PIBs),also known as“novel post-lithium-ion batteries,”have promising energy storage and utilization prospects due to their abundant and inexpensive raw *** anode materials are critical for realizing high-performance PIBs because they are an important component determining the energy and power ***-dimensional(2D)layered anode materials with increased interlayer distances,specific surface areas,and more active sites are promising candidates for PIBs,which have a high reversible capacity in the energetic *** this review,we briefly summarize K+storage behaviors in 2D layered carbon,transition metal chalcogenides,and MXene materials and provide some suggestions on how to select and optimize appropriate 2D anode materials to achieve ideal electrochemical performance.

关键词： potassium-ion battery layered materials carbon transition metal chalcogenides MXene materials

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A Survey on Hypergraph Mining: Patterns, Tools, and Generators

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ACM Computing Surveys 2025年第8期57卷 1-36页

作者： Lee, Geon Bu, Fanchen Eliassi-Rad, Tina Shin, Kijung Kim Jaechul Graduate School of Ai Korea Advanced Institute of Science and Technology Seoul Korea Republic of School of Electrical Engineering Korea Advanced Institute of Science and Technology Daejeon Korea Republic of Khoury College of Computer Sciences Northeastern University Boston United States

Hypergraphs, which belong to the family of higher-order networks, are a natural and powerful choice for modeling group interactions in the real world. For example, when modeling collaboration networks, which may involve not just two but three or more people, the use of hypergraphs allows us to explore beyond pairwise (dyadic) patterns and capture groupwise (polyadic) patterns. The mathematical complexity of hypergraphs offers both opportunities and challenges for hypergraph mining. The goal of hypergraph mining is to find structural properties recurring in real-world hypergraphs across different domains, which we call patterns. To find patterns, we need tools. We divide hypergraph mining tools into three categories: (1) null models (which help test the significance of observed patterns), (2) structural elements (i.e., substructures in a hypergraph such as open and closed triangles), and (3) structural quantities (i.e., numerical tools for computing hypergraph patterns such as transitivity). There are also hypergraph generators, whose objective is to produce synthetic hypergraphs that are a faithful representation of real-world hypergraphs. In this survey, we provide a comprehensive overview of the current landscape of hypergraph mining, covering patterns, tools, and generators. We provide comprehensive taxonomies for each and offer in-depth discussions for future research on hypergraph mining. © 2025 Copyright held by the owner/author(s).

关键词： Taxonomies

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Tailoring fluorine-rich solid electrolyte interphase to boost high efficiency and long cycling stability of lithium metal batteries

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science China Chemistry 2023年第7期66卷 2121-2129页

作者： Tianyang Xue Ji Qian Xingming Guo Yi Chen Kaixin Yu Tianyang Yu Yao Li Li Li Feng Wu Renjie Chen Beijing Key Laboratory of Environmental Science and Engineering School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Institute of Advanced Technology Beijing Institute of TechnologyJinan 250300China Collaborative Innovation Center of Electric Vehicles in Beijing Beijing 100081China

Lithium metal batteries(LMBs)are regarded as the most promising next-generation battery system due to their high energy ***,Li dendrite growth and low Coulombic efficiency(CE)of Li metal anodes limit their *** solid electrolyte interphase(SEI)is an extremely effective method to solve these problems and using electrolyte additives to regulate the SEI is one of the most effective ***,we study the feasibility of trans-difluoroethylene carbonate(DFEC)used as the solvent additive in conventional ether electrolyte,which has excellent anti-reduction stability against Li *** result shows that a Li/Cu half-cell with the modified electrolyte can be steadily cycled for 300 cycles with an average CE of 97.41%at the current density of 0.5 m A cm^(-2)and with 97.1%for 140 cycles at 1 m A cm^(-2).Besides,the Li/LFP full cell with the modified electrolyte displays an improved capacity retention of 94.55%after 520 cycles with an average CE of 99.74%at 1 *** contrast,the capacity retention of 56.2%and CE of 99.15%is obtained for the cell with pure ether *** SEM images show that the DFEC enables dense Li deposition,and the FTIR and XPS spectra confirm the formation of Li Frich SEI with the *** work demonstrates the feasibility of using DFEC as the solvent additive in ether electrolyte to construct Li F-rich SEI,and it will provide important insight in developing high-performance electrolytes for LMBs.

关键词： lithium metal batteries ether electrolyte trans-difluoroethylene carbonate LiF-rich SEI dense Li deposition

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Research status and prospects of the fractal analysis of metal material surfaces and interfaces

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 20-38页

作者： Qinjin Dai Xuefeng Liu Xin Ma Shaojie Tian Qinghe Cui Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and Technology BeijingBeijing 100083China Beijing Laboratory of Metallic Materials and Processing for Modern Transportation University of Science and Technology BeijingBeijing 100083China Laboratory for Advanced Materials Processing of Ministry of Education University of Science and Technology BeijingBeijing 100083China School of Mechanical and Electrical Engineering Xinjiang Institute of EngineeringUrumqi 830023China

As a mathematical analysis method,fractal analysis can be used to quantitatively describe irregular shapes with self-similar or self-affine *** analysis has been used to characterize the shapes of metal materials at various scales and *** methods make it difficult to quantitatively describe the relationship between the regular characteristics and properties of metal material surfaces and ***,fractal analysis can be used to quantitatively describe the shape characteristics of metal materials and to establish the quantitative relationships between the shape characteristics and various properties of metal *** the perspective of two-dimensional planes and three-dimensional curved surfaces,this paper reviews the current research status of the fractal analysis of metal precipitate interfaces,metal grain boundary interfaces,metal-deposited film surfaces,metal fracture surfaces,metal machined surfaces,and metal wear *** relationship between the fractal dimensions and properties of metal material surfaces and interfaces is *** from three perspectives of fractal analysis,namely,research scope,image acquisition methods,and calculation methods,this paper identifies the direction of research on fractal analysis of metal material surfaces and interfaces that need to be *** is believed that revealing the deep influence mechanism between the fractal dimensions and properties of metal material surfaces and interfaces will be the key research direction of the fractal analysis of metal materials in the future.

关键词： metal material surfaces and interfaces fractal analysis fractal dimension homogeneity

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Effect of temperature on the mechanical properties of Ni-based superalloys via molecular dynamics and crystal plasticity

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Journal of Materials science & technology 2024年第36期203卷 126-142页

作者： Y.-Z.Liu Z.-L.Shi Y.-B.Zhang M.Qin S.-P.Hu X.-G.Song W.Fu B.-J.Lee State Key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyHarbin 150001China State Key Laboratory of Metastable Materials Science and Technology Yanshan UniversityQinhuangdao 066000China Department of Materials Science and Engineering National University of SingaporeSingapore 117576Singapore Shandong Institute of Shipbuilding Technology Weihai 264209China Department of Materials Science and Engineering Pohang University of Science and TechnologyPohang 790784Korea

Study on the influence of temperature on the mechanical properties across multiple scales has been a focus on the research of Hastelloy-X(HX)alloys for the application in high-temperature structure *** this work,Molecular Dynamics(MD)and Crystal Plasticity(CP)are put together to solve it from atomic scale to mesoscopic *** research indicates that the deformation of HX alloy occurs in two stages at temperature below 300 K:initially,as stacking fault deforms,stacking fault can trans-form into twinning with increasing *** the temperature exceeds 300 K,deformation primarily forms a stacking *** twinning deformation path transforms from intrinsic stacking fault to extrin-sic stacking fault and then to twinning.A mesoscopic-scale CP model was developed using atomic-scale deformation mechanisms to bridge the gap between deformation mechanisms and experimental *** CP results indicate a functional relationship between the strength of HX alloy and *** relationship appears insensitive to crystal texture and grain *** grain morphology and texture into the model significantly impacts the strength response of calculating HX *** the ten-sile deformation of HX alloy at 300 and 1173 K,the atomic scale deformation results characterized by transmission electron microscopy are aligned with the MD simulation *** relationship between strength and temperature predicted by CP results has also been validated.A thorough investigation into the deformation behavior of HX alloys across different scales,employing MD and CP models,introduces a novel approach for predicting the mechanical properties of superalloys.

关键词： Molecular dynamics Twinning Superalloy High-temperature strength Crystal plasticity

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Effects of microstructure characteristics on the tensile properties and fracture toughness of TA15 alloy fabricated by hot isostatic pressing

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International Journal of Minerals,Metallurgy and Materials 2023年第4期30卷 697-706页

作者： Langping Zhu Yu Pan Yanjun Liu Zhiyu Sun Xiangning Wang Hai Nan Muhammad-Arif Mughal Dong Lu Xin Lu Beijing Advanced Innovation Center for Materials Genome Engineering Institute of Engineering TechnologyUniversity of Science and Technology BeijingBeijing 100083China AECC Beijing Institute of Aeronautical Materials Beijing 100095China Beijing Engineering Research Center of Advanced Titanium Alloy Precision Forming Technology Beijing 100095China Institute of Artificial Intelligence University of Science and Technology BeijingBeijing 100083China Sichuan Advanced Metal Material Additive Manufacturing Engineering Technology Research Center Chengdu Advanced Metal Materials Industry Technology Research Institute Co.LtdChengdu 610300China

Powder hot isostatic pressing(HIP) is an effective method to achieve near-net-shape manufacturing of high-quality complex thinwalled titanium alloy parts, and it has received extensive attention in recent years. However, there are few reports about the microstructure characteristics on the strengthening and toughening mechanisms of powder hot isostatic pressed(HIPed) titanium alloys. Therefore, TA15powder was prepared into alloy by HIP approach, which was used to explore the microstructure characteristics at different HIP temperatures and the corresponding tensile properties and fracture toughness. Results show that the fabricated alloy has a “basket-like structure” when the HIP temperature is below 950℃, consisting of lath clusters and surrounding small equiaxed grains belts. When the HIP temperature is higher than 950℃, the microstructure gradually transforms into the Widmanstatten structure, accompanied by a significant increase in grain size. The tensile strength and elongation are reduced from 948 MPa and 17.3% for the 910℃ specimen to 861 MPa and 10% for the 970℃ *** corresponding tensile fracture mode changes from transcrystalline plastic fracture to mixed fracture including intercrystalline *** fracture toughness of the specimens increases from 82.64 MPa·m^(1/2)for the 910℃ specimen to 140.18 MPa·m^(1/2)for the 970℃ *** below 950℃ tend to form holes due to the prior particle boundaries(PPBs), which is not conducive to toughening. Specimens above 950℃ have high fracture toughness due to the crack deflection, crack branching, and shear plastic deformation of the Widmanstatten structure. This study provides a valid reference for the development of powder HIPed titanium alloy.

关键词： powder titanium alloy hot isostatic pressing strength fracture toughness

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Ab initio theory of the nonequilibrium adsorption energy

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npj Computational Materials 2024年第1期10卷 2615-2621页

作者： Juho Lee Hyeonwoo Yeo Ryong-Gyu Lee Yong-Hoon Kim School of Electrical Engineering Korea Advanced Institute of Science and Technology(KAIST)291 Daehak-roYuseong-guDaejeon 34141Republic of Korea

While first-principles calculations of electrode-molecule adsorption play an indispensable role in obtaining atomic-level understanding in surface science and electrochemistry,a significant challenge remains because the adsorption energy is well-defined only in ***,a theory to calculate the electric enthalpy for electrified interfaces is formulated within the multi-space constrained-search density functional theory(MS-DFT),which provides the nonequilibrium total energy of a nanoscale electrode-channel-electrode *** additional MS-DFT calculation for the electrode-only counterpart that maintains the same bias voltage allows one to identify the internal energy of the channel as well as the electric field and the channel polarization,which together determine the electric enthalpy and the nonequilibrium adsorption *** of the developed scheme to the water-Au and water-graphene interface models shows that the Au and graphene electrodes induce very different behaviors in terms of the electrode potential-dependent stabilization of water *** theory developed here will be a valuable tool in the ongoing effort to obtain atomicscale understanding of bias-dependent molecular reorganizations in electrified interfaces.

关键词： adsorption nonequilibrium electrode

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Fully tunable Fabry-Pérot cavity based on MEMS Sagnac loop reflector with ultra-low static power consumption

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Microsystems & Nanoengineering 2024年第4期10卷 355-365页

作者： Young Jae Park Man Jae Her Youngjae Jeong Dong Ju Choi Dong Uk Kim Min Gi Lim Myung Seok Hong Hyug Su Kwon Kyoungsik Yu Sangyoon Han Department of Robotics and Mechatronics Engineering Daegu Gyeongbuk Institute of Science and Technology(DGIST)Daegu 42988Republic of Korea School of Electrical Engineering Korea Advanced Institute of Science and Technology(KAIST)Daejeon 34141Republic of Korea Agency for Defense Development DaejeonRepublic of Korea

The Fabry-Pérot interferometer,a fundamental component in optoelectronic systems,offers interesting applications such as sensors,lasers,and *** this work,we show a tunable Fabry-Pérot cavity consisting of tunable Sagnac loop reflectors(SLRs)and phase shifters based on electrostatic microelectromechanical(MEMS)*** fabrication process of the device is compatible with the standard wafer-level silicon photonics fabrication *** electrostatic actuation mechanism provides well-balanced,scalable pathways for efficient tuning *** extinction ratio of the continuously tunable SLRs’reflectivity is larger than 20 *** 2πphase shifting is achieved,and response times of all the components are less than 25μ*** actuators have extremely low static power,measuring under 20 fW and the energy needed for tuning is both below 20 pJ.

关键词： tunable tuning interferometer

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An innovative and facile synthesis route of(La,Sr)_(2)FeO_(4+δ)–La_(0.4)Sr_(0.6)FeO_(3−δ)composite as a highly stable air electrode for reversible solid oxide cell applications

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Journal of advanced Ceramics 2024年第9期13卷 1337-1348页

作者： Qihang Ren Yang Zhang Haoliang Tao Ling Qin KonradŚwierczek Wanbing Guan Jianxin Wang Changrong Xia Liangzhu Zhu Nano Science and Technology Institute University of Science and Technology of ChinaSuzhou 215123China Zhejiang Key Laboratory of Advanced Fuel Cells and Electrolyzers Technology Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201China Faculty of Energy and Fuels AGH University of Krakowal.A.Mickiewicza 30Krakow 30-059Poland College of Materials Science and Engineering Hubei University of Automotive TechnologyShiyan 442002China

Achieving thermal cycle stability is an imperative challenge for the successful commercialization of solid oxide cell(SOC)***‒Popper(R‒P)oxides,whose thermal expansion coefficient(TEC)is compatible with common electrolytes,are promising candidates for SOC ***,the two-dimensional conduction characteristic of R‒P oxides leads to insufficient catalytic activity,which hinders their ***,we propose a win‒win strategy for self-assembly decoration by employing a one-pot method to address this *** using a single perovskite oxide(La_(0.4)Sr_(0.6)FeO_(3))to modify R‒P oxide(La_(0.8)Sr_(1.2)FeO_(4+δ)),we enhanced the electrochemical performance without compromising the stability of the composite *** strategic incorporation of a 10 mol%perovskite phase at 800℃ resulted in a significant 49%reduction in the polarization resistance(R_(p)),an impressive 86%increase in the maximum power density under power generation mode,and a notable 33%increase in the electrolysis current density under electrolysis ***,the perovskite-decorated R‒P oxide composite also exhibited high thermal and chemical stability,with negligible performance degradation observed under both thermal cycling and charge/discharge cycling *** results demonstrate that such dual-phase composites,which are simultaneously produced by a onestep process with outstanding catalytic activity and stability,can be considered an effective strategy for the advancement of SOCs.

关键词： Ruddlesden−Popper(R−P) solid oxide cell(SOC) air electrode robustness one-pot synthesis

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High temperature liquid shock manufacturing of RuNi catalysts for hydrogen evolution reaction

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Progress in Natural science:Materials International 2024年第5期34卷 985-989页

作者： Liming Li Peng Kang Donghui Feng Yuguang Zhang Hangxing Ren Yanchang Liu Xiaoya Cui School of Chemical Engineering and Technology Tianjin University Purification Equipment Research Institute of CSSC Handan PERIC Hydrogen Technologies Co. Ltd School of Materials Science and Engineering Advanced Research Institute of Multidisciplinary Science Beijing Institute of Technology National Laboratory of Mineral Materials School of Material Sciences and Technology China University of Geosciences

Rational design and production of materials for highly effective and environmental-friendly electrocatalytic hydrogen evolution reaction（HER） play a pivotal role in advancing renewable energy utilization. Structural engineering of noble metal nanomaterials can significantly boost catalytic performance through atomic rearrangement, electronic structure modification and surface reactivity modulation. Here, RuNi alloy is synthesized using a novel high temperature liquid shock method（HTLS） with instant Joule heating treatment at 1073 K under the mixed atmosphere of Argon（Ar） and CO. The synthesis process involves an aqueous solution containing metal precursors, capping agents, reductant agents and carbon black. Particularly, the as-prepared RuNi-HTS nanostructures with hexagonal close-packed（hcp） phase demonstrate impressive electrocatalytic HER activity in alkaline conditions, requiring only 28 mV of overpotentials at a current density of 10 mA cm-2. Note that the Tafel slope is 159.2 mV dec-1. Furthermore, this versatile HTLS method can be extended to synthesize other catalysts, including Ru-HTS, PtRu, and PtZn, all of which show commendable performance for HER as well. This study lays the groundwork for the strategic design and high-throughput synthesis of novel materials with finetuned structure and refined size, enabling highly efficient and environmental-friendly electrocatalysis.

关键词： High temperature liquid shock method Hydrogen evolution reaction RuNi alloy Joule heating

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