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Copper silicate nanoneedle arrays on reduced graphene oxide like "shelter forest" guiding Zn gradient deposition

Green Energy and Environment 2025年第5期10卷 967-981页

作者： Gao, Na Wang, Yang Gao, Zhanming Lv, Tianming Rong, Mengyu Dong, Xueying Chen, Dongzhi Meng, Changgong Zhang, Yifu State Key Laboratory of Fine Chemicals School of Chemistry Dalian University of Technology Dalian116024 China State Key Laboratory of New Textile Materials & Advanced Processing Technology Wuhan Textile University Wuhan430073 China Hubei Key Laboratory of Radiation Chemistry and Functional Materials School of Nuclear Technology and Chemistry & Biology Hubei University of Science and Technology Xianning437100 China College of Environmental and Chemical Engineering Dalian University Dalian116622 China

With the sustainable and efficient development of aqueous zinc ion batteries (AZIBs), the research on addressing the issues of the adaptability and durability of zinc anodes has been hot-topic and is still of great challenge. In this work, inspired by the sand treatment and afforestation of the Gobi Beach in Northwest China to ameliorate the problem of wind and sand encroachment, we propose a material with a morphology similar to that of a "shelter forest", CuSiO3 nanoneedles arrays grown on both sides of reduced graphene oxide (rGO@CuSi), as a coating layer on the zinc metal surface to guide Zn gradient deposition. The presence of rGO improves the electrical conductivity of CuSiO3, and the finite element simulation of the electric field and Zn2+ concentration proves that the electric field distribution can be effectively homogenized and the local current density can be reduced for the rGO@CuSi-Zn electrode with the surface presenting the shape of a protective forest. This is due to the abundant pores between the nano-needle array structures on the surface of the electrode, which provide high electron and ion transport paths, and are conducive to achieving uniform Zn deposition, like the principle of wind-sand stabilization by protective forest. Both electrochemical experiments and density functional theory calculations show that the negatively charged surface of rGO@CuSi with good Zn affinity is more capable of guiding Zn2+ transport. Thanks to its inherent material and structural characteristics, the rGO@CuSi-Zn anode has a high specific capacity and good cycling stability. This study provides insight for interface engineering like protective forest to accelerate the commercialization of high-performance Zn-based batteries. © 2024 Institute of Process Engineering, Chinese Academy of Sciences

关键词： Nanoneedles

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Crystallographic micro-mechanism of faceted crack initiation in near-αtitanium alloy Ti6321 under room-temperature fatigue and dwell fatigue loadings

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材料科学技术（英文版） 2025年第2期205卷 109-126页

作者： Wenyuan Zhang Qiaonan Shu Jiangkun Fan Panpan Fan Xiangyi Xue Peng Jiang Minjie Lai Bing Tang Zhiqian Liao Hongchao Kou Jinshan Li State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi'an 710072China State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi'an 710072China National & Local Joint Engineering Research Center for Precision Thermoforming Technology of Advanced Metal Materials Xi'an 710072China Chongqing Innovation Center Northwestern Polytechnical UniversityChongqing 401135China Luoyang Ship Material Research Institute Luoyang 471000China

Crack initiation mechanism of dwell fatigue has always been a key problem in rationalizing the dwell effect,and it is not completely understood *** study conducted stress-controlled low-cycle fatigue and dwell fatigue tests on Ti-6Al-3Nb-2Zr-1Mo alloy with bimodal microstructure to reveal its microstruc-tural characteristics and crack initiation *** study demonstrated that the faceted primaryα nodules located near the specimen surface acted as crack initiation sites during both fatigue and dwell fatigue *** trace analysis revealed that faceted cracking occurred at(0001)basal plane with the maximum Schmid factor value through a special cracking mode referred to as(0001)twist boundary *** criteria of parameters C1 and C2 were proposed based on experimental observation and molecular dynamics simulations,which well identify candidates for(0001)twist boundary crack *** demonstrated that grain pairs combining a moderately high Schmid factor for basal slip and a well-orientated Burgers vector in the out-of-surface plane was the preferable location for surface(0001)twist-boundary crack initiation,and grain pairs combining a high Schmid factor for basal slip and a high normal stress on basal plane are perfect candidates for subsurface *** on this,phenomeno-logical models are proposed to explain the surface(0001)twist-boundary cracking mechanism from the perspective of surface extrusion-intrusion-induced micro-notches.

关键词： Titanium alloy Dwell fatigue Facet Fatigue crack initiation Crystallographic orientation

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Thickness-dependent magnetic property of FeNi thin film grown on flexible graphene substrate

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Chinese Physics B 2025年第2期34卷 448-452页

作者： Suixin Zhan Shaokang Yuan Yuming Bai Fu Liu Bohan Zhang Weijia Han Tao Wang Shengxiang Wang Cai Zhou State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile UniversityWuhan 430200China School of Mathematical and Physical Sciences Wuhan Textile UniversityWuhan 430200China School of Integrated Circuits Huazhong University of Science and TechnologyWuhan 430074China Key Laboratory for Magnetism and Magnetic Materials Ministry of EducationLanzhou UniversityLanzhou 730000China

Electronics over flexible substrates offer advantages of flexibility, portability and low cost, and promising applications in the areas of energy, information, defense science and medical service. In recent years, tremendous progress has been witnessed in the development of flexible wearable devices that can be potentially massively deployed. Of particular interest are intelligent wearable devices, such as sensors and storage cells, which can be integrated by flexible magnetoelectronic devices based on magnetic thin films. To examine this further, the magnetic properties of FeNi thin films with different thicknesses grown on flexible graphene substrate are investigated at room temperature. The coercivity increases with increasing thicknesses of FeNi thin film, which can be attributed to the increase of grain size and decrease of surface roughness. Moreover, the thickness modulated magnetic property shows a magnetic anisotropy shift increase with varying thicknesses of FeNi thin film by using measurements based on ferromagnetic resonance, which further enhances the resonance frequency. In addition, the resonance peak is quite stable after bending it for ten cycles. The result is promising for the future design of flexible magnetoelectronic devices.

关键词： resonance frequency FeNi thin film flexible graphene substrate magnetic property

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Anion-induced electrolyte chemistry enables high energy density primary battery for ultralow-temperature conditions

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Science China Chemistry 2025年第5期68卷 2051-2058页

作者： Zi-Hang Xue Hao-Jie Liang Yong-Li Heng Jia-Lin Yang Edison Huixiang Ang Hong-Yan Lü Hong Yu Dongmei Dai Dai-Huo Liu Chuan-Yu Zheng Wei Guo Xing-Long Wu Department of Chemistry Northeast Normal University MOE Key Laboratory for UV Light-Emitting Materials and Technology Northeast Normal University Natural Sciences and Science Education National Institute of EducationNanyang Technological University State Key Laboratory of Solidification Processing Center of Advanced Lubrication and Seal MaterialsNorthwestern Polytechnical University School of Chemistry and Chemical Engineering Henan Normal University Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province Gannan Normal University

Lithium/fluorinated-carbon（Li/CFx） primary batteries are widely used in defense and military fields due to their stable discharge plateau,low self-discharge rate,and adaptability across a wide temperature ***,enhancing their overall energy density and discharge capacity at low temperatures remains a critical ***,we report a strategically designed LiBF4-based sulfite/carboxylate electrolyte,where the anion-involved solvation structure significantly enhances electrochemical kinetics by reducing the desolvation ***,it introduces a radical reaction mechanism that contributes to additional *** a result,the Li/CFxprimary batteries with this formulated electrolyte deliver a specific capacity of 2,257.15 mAh g-1at 25 ℃.More importantly,when operating at -40 ℃,the batteries exhibit an exceptionally high discharge capacity of 1,549.4 mAh g-1and an energy density of 2,868.6 Wh *** at -60 ℃,the Li/CFxcells achieve a specific capacity of 444.3 mAh g-1and an energy density of 821.8 Wh kg-1at 0.1 C,significantly outperforming previously reported organic-based liquid *** work offers a viable strategy for enhancing the specific capacity and energy density of primary batteries in extreme environments,providing valuable insights for future developments.

关键词： Li/CFx primary batteries radical reaction mechanism desolvation barrier low-temperature

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Hydratable Janus Membranes with Robust Antiwetting Pores for Stable Membrane Distillation of Saline Oily Wastewater

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ACS Applied materials and Interfaces 2025年第21期17卷 31667-31676页

作者： Huang, Cheng Qin, Qi Chen, Zhongao Chen, Xiao Zhang, Pengchao Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 China Hubei Longzhong Laboratory Wuhan University of Technology Xiangyang Demonstration Zone Xiangyang 441000 China Sanya Science and Education Innovation Park Wuhan University of Technology Sanya 572024 China

Janus membranes, composed of a hydrophilic surface layer and a hydrophobic substrate, are potential candidates for membrane distillation (MD) to prevent organic substance induced wetting in saline oily wastewater treatments. However, owing to insufficient hydrophobicity of pore surfaces, traditional hydrophobic substrates suffer from pore wetting and limited MD performance stability when saline water penetrates through the hydrophilic layer. Herein, we present a Janus polyvinylidene fluoride (PVDF) nanocomposite membrane with robust pore surface antiwettability for stable MD desalination of saline oily wastewater. Hydrophobic silica (SiO₂) nanoparticles are used to build nanostructures on pore surfaces to significantly enhance their hydrophobicity for preventing pore wetting. The superhydrophilic tannic acid/Fe (TA/Fe) layer provides a hydratable surface to promote water molecule absorption, facilitate the evaporation rate, and effectively impede oil/surfactant/gypsum contaminants. As a result, the TA/Fe-PVDF/SiO₂ Janus membrane shows stable desalination (32 h) with a high flux of 25.2 kg m^-2 h^-1 and salt rejection (>99.9%) for saline oily solution. This work provides a promising approach to develop high-performance Janus membranes with antiwetting ability for stable saline oily wastewater treatment. © 2025 American Chemical Society.

关键词： antiwetting pores Janus membrane membrane distillation saline oily wastewater stable desalination

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Emerging natural clay-based materials for stable and dendrite-free lithium metal anodes:A review

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Chinese Chemical Letters 2025年第2期36卷 133-144页

作者： Haobo Wang Fei Wang Yong Liu Zhongxiu Liu Yingjie Miao Wanhong Zhang Guangxin Wang Jiangtao Ji Qiaobao Zhang School of Materials Science and Engineering Provincial and Ministerial Co-construction of Collaborative Innovation Center for Non-ferrous Metal new Materials and Advanced Processing TechnologyHenan University of Science and TechnologyLuoyang 471023China Faculty of Engineering Huanghe Science and Technology UniversityZhengzhou 450063China Henan Key Laboratory of Non-Ferrous Materials Science&Processing Technology Henan University of Science and TechnologyLuoyang 471023China College of Agricultural Equipment Engineering Henan University of Science and TechnologyLuoyang 471023China State Key Laboratory of Physical Chemistry of Solid Surfaces College of MaterialsXiamen UniversityXiamen 361005China

Lithium metal is one of the most promising anodes for lithium batteries because of their high theoretical specific capacity and the low electrochemical ***,the commercialization of lithium metal anodes(LMAs)is facing significant obstacles,such as uncontrolled lithium dendrite growth and unstable solid electrolyte interface,leading to inferior Coulombic efficiency,unsatisfactory cycling stability and even serious safety *** low-cost natural clay-based materials(NCBMs)in LMAs is deemed as one of the most effective methods to solve aforementioned *** NCBMs have received considerable attention for stabilizing LMAs due to their unique structure,large specific surface areas,abundant surface groups,high mechanical strength,excellent thermal stability,and environmental *** the rapidly growing research enthusiasm for this topic in the last several years,here,we review the recent progress on the application of NCBMs in stable and dendrite-free *** different structures and modification methods of natural clays are first *** addition,the relationship between their modification methods and nano/microstructures,as well as their impact on the electrochemical properties of LMAs are systematically ***,the current challenges and opportunities for application of NCBMs in stable LMAs are also proposed to facilitate their further development.

关键词： Natural clay-based materials Aolid-state electrolyte Surface modification Li metal anodes Rechargeable batteries

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Study on Synergistic Extraction of Iron from Carbide Slag and Nickel Slag

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Journal of Sustainable Metallurgy 2025年 1-10页

作者： Yang, Lushun Li, Bin Du, Xueyan Han, Mengyao School of Materials Science and Engineering Lanzhou University of Technology Lanzhou730050 China State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals Lanzhou University of Technology Lanzhou730050 China

Iron recovery from nickel slag, a significant byproduct generated during nickel pyrometallurgical process, represents a pivotal aspect of advancing sustainable utilization of metallurgical solid waste. This study explores the potential of utilizing carbide slag as a fluxing modifier to enhance iron extraction from nickel slag through the melting oxidation process. Thermodynamic simulations were conducted with FactSage software to predict phase equilibria and reaction pathway, while experimental analyses were performed to investigate phase composition, microstructural morphologies, and iron recovery efficiencies. The results indicate that in the FeO–SiO2–CaO–MgO slag system, predominant magnetite emerges as the primary iron-bearing phase in the spinel region. Increasing the slag’s basicity shifts the corresponding phase area of spinel increases first and then decreases. Thermodynamic predictions and experimental data corroborate that the addition of carbide slag facilitates the transformation of the fayalite phase into magnetite and pyroxene phases. Optimal basicity levels enhance the precipitation and crystal growth of magnetite, as well as promote the separation of iron from the slag matrix. Specifically, at a basicity of 0.5, the oxidized samples displayed the highest magnetite precipitation, with a recovery rate of 93.2%. Detailed microstructural analysis revealed the formation of well-defined dendritic magnetite crystals. These findings suggest that the introduction of carbide slag not only optimizes the phase transformation processes but also significantly enhances iron recovery, offering a viable pathway for the synergistic reutilization of nickel and calcium carbide slags. © The Minerals, Metals & materials Society 2025.

关键词： Magnetite

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Lattice Boltzmann simulation of droplet dynamics in proton exchange membrane fuel cell channel with mechanical vibration

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Chemical Engineering Research and Design 2025年 218卷 302-311页

作者： Zhou, Zijian Zhai, Shuai Liu, Xunchen Fang, Yuan Chen, Mingzhang Zhang, Ju Guan, Shanyue Hubei Longzhong Laboratory Wuhan University of Technology Hubei Xiangyang441000 China School of Automotive Engineering Wuhan University of Technology Wuhan430070 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan430070 China Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education College of Chemistry and Materials Science South-central University for Nationalities Wuhan430074 China School of Vehicle Engineering Hubei University of Automotive Technology Shiyan442002 China

Handling water is a critical challenge for proton exchange membrane (PEM) fuel cells, significantly impacting their lifespan and reliability. While most PEM cells operate in vibrational environments, no studies have examined how mechanical vibrations affect water handling. This research investigates water droplet behavior in a vibrating airflow channel and proposes a new design featuring a hydrophilic band to enhance water management. key findings include: (1) an optimal hydrophilic band width of 0.6 that facilitates droplet movement;(2) a decrease in droplet velocity from 0.107 to 0.024 m s−1 as amplitude increases from 5 mm to 20 mm;and (3) an increase in velocity from 0.0669 to 0.15 m s−1 with higher frequency, highlighting the significant effects of vibration on droplet dynamics and overall water management in PEM fuel cells. © 2025 Institution of Chemical Engineers

关键词： Machine vibrations

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Design and Dynamic Experiment of Al-Cu Graded materials Impactor with Strain Rate of 10^(4)–10^(5)/s

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稀有金属材料与工程 2025年第3期54卷 581-586页

作者： Hu Jianian Zhou Zizheng Li Yidi Chen Xiang Yang Gang Liu Jintao Zhang Jian State Key Laboratory of Precision Blasting Jianghan UniversityWuhan 430056China Hubei Key Laboratory of Blasting Engineering Jianghan UniversityWuhan 430056China Luoyang Ship Material Research Institute Luoyang 471023China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

Based on simplified calculations of one-dimensional wave systems,loading pressure platform curves of Al-Cu gradient materials(GMs)impactor were *** Al-Cu GMs were prepared using tape-pressing sintering,and their acoustic properties were characterized to match the design *** parallelism of the Al-Cu GM was confirmed using a three-dimensional surface profilometry machine.A one-stage light-gas gun was used to launch the Al-Cu GM,impacting an Al-LiF target at a velocity of 400 m/*** results of the experimental strain rate demonstrate that the Al-Cu GMs can realize the precise control of the strain rate within the range of 10^(4)‒10^(5)/s in the high-speed impact experiments.

关键词： high strain rate Al-Cu graded materials impactor acoustic impedance gas gun experiment

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Regulating crystallization and retarding oxidation in Sn-Pb perovskite via 1D cation engineering for high performance all-perovskite tandem solar cells

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Journal of Energy Chemistry 2025年第1期100卷 646-652页

作者： Ranran Liu Xin Zheng Zaiwei Wang Miaomiao Zeng Chunxiang Lan Shaomin Yang Shangzhi Li Awen Wang Min Li Jing Guo Xuefei Weng Yaoguang Rong Xiong Li Michael Grätzel Center for Mesoscopic Solar Cells Wuhan National Laboratory for OptoelectronicsHuazhong University of Science and TechnologyWuhan 430074HubeiChina Institute of Technology for Carbon Neutrality Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055GuangdongChina School of Chemistry Chemical Engineering and Life SciencesState Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingWuhan University of Technology430070HubeiChina Suzhou Institute of Nano-Tech and Nano-Bionics(SINANO) Chinese Academy of SciencesSuzhou 215123JiangsuChina School of Physics and Optoelectronic Engineering Hainan UniversityHaikou 570228HainanChina

All-perovskite tandem solar cells have the potential to surpass the theoretical efficiency limit of single junction solar cells by reducing thermalization ***,the challenges encompass the oxidation of Sn^(2+)to Sn^(4+)and uncontrolled crystallization kinetics in Sn-Pb perovskites,leading to nonradiative recombination and compositional heterogeneity to decrease photovoltaic efficiency and operational ***,we introduced an ionic liquid additive,1-ethyl-3-methylimidazolium iodide (EMIMI) into Sn-Pb perovskite precursor to form low-dimensional Sn-rich/pure-Sn perovskites at grain boundaries,which mitigates oxidation of Sn^(2+)to Sn^(4+)and regulates the film-forming dynamics of Sn/Pb-based perovskite *** optimized single-junction Sn-Pb perovskite devices incorporating EMIMI achieved a high efficiency of 22.87%.Furthermore,combined with wide-bandgap perovskite sub-cells in tandem device,we demonstrate 2-terminal all-perovskite tandem solar cells with a power conversion efficiency of 28.34%,achieving improved operational stability.

关键词： All-perovskite tandem solar cells Sn-Pb perovskite 1D Regulated crystallization Antioxidation

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