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3D printed silicon-based micro-lattices with ultrahigh areal/gravimetric capacities and robust structural stability for lithium-ion batteries

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Nano Research 2024年第4期17卷 2693-2703页

作者： Jie Fu Dong Wang Yan li Xianzheng liu Rui zhang Zhiyuan liu Pengdong liu lijuan zhang Xuefei li Guangwu wen School of Materials Science and Engineering Shandong University of TechnologyZibo 255000China Shandong Si-Nano Materials Technology Co. Ltd.Zibo 255000China

Nanostructured silicon anodes have shown extraordinary lithium storage properties for lithium-ion batteries(liBs)but are usually achieved at low areal loadings(<1.5 mg·cm^(-2))with low areal *** sound electrochemical... 详细信息

Nanostructured silicon anodes have shown extraordinary lithium storage properties for lithium-ion batteries(liBs)but are usually achieved at low areal loadings(lity in the thicker ***,we report a three-dimensional(3D)printed silicon-graphene-carbon nanotube(3D-Si/G/C)electrode for simultaneously achieving ultrahigh areal/gravimetric capacities at high mass *** periodically arranged vertical channels and hierarchically porous filaments facilitate sufficient electrolyte infiltration and rapid ion diffusion,and the carbonaceous network provides excellent electron transport properties and mechanical integrity,thus endowing the printed 3D-Si/G/C electrode with fast electrochemical reaction kinetics and reversibility at high mass ***,the 3D-Si/G/C with high areal mass loading of 12.9 mg·cm^(-2) exhibits excellent areal capacity of 12.8 mAh·cm^(-2) and specific capacity of 1007 mAh·g^(-1),***-situ optical microscope and ex-situ scanning electron microscope(SEM)confirm that the hierarchically porous filaments with interconnected carbon skeletons effectively suppress the volume change of silicon and maintain stable micro-lattice architecture.A 3D printed 3D-Si/G/C-1||3D-liFePO_(4)/G full cell holds excellent cyclic stability(capacity retention rate of 78%after 50 cycles)with an initial Coulombic efficiency(ICE)of 96%.This work validates the feasibility of 3D printing on constructing high mass loading silicon anode for practical high energy-density liBs.

关键词： silicon anode areal capacity three-dimensional(3D)printing lithium-ion batteries

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Effect of TiO_(2) addition on microstructures and properties of Mgo-Cao refractory aggregates

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Journal of Iron and Steel Research(International) 2024年第6期31卷 1547-1554页

作者： Shuai zhang Jing-ran Wang Yuan-gao li Feng-you li wen Yan Hui-ying Shi The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and TechnologyWuhan 430081HubeiChina Joint International Research Laboratory of Refractories and Metallurgy Wuhan 430081HubeiChina Shanxi Luweibao Taigang Refractory Co. Ltd.Taiyuan 030003ShanxiChina

MgO-CaO(40 wt.%CaO)refractory aggregates were prepared using the calcined dolomite and light-burned magnesia fine powder as raw materials and TiO_(2) as *** effect of TiO_(2) on their phase composition,microstructures and properties was investigated by X-ray diffraction and scanning electron *** properties such as bulk density,apparent porosity,relative aggregate tube strength and hydration resistance were also *** results showed that the CaTiO_(3) generated by the reaction between CaO and TiO_(2) was distributed around the CaO grain boundaries and intermittently distributed with MgO,which formed an isolation layer around CaO and greatly improved the hydration ***,the introduction of TiO_(2) promoted sintering and increased the grain size,further improving the strengths and hydration resistance of the *** addition,the most significant enhancement in the hydration resistance and strengths of the samples was achieved when 1.0-2.0 wt.%TiO_(2) was *** this case,the relative strength of aggregate increased from 33.3% to 37.3%-43.1%,and the mass gain after the hydration test decreased from 3.13% to 1.26%-1.45%.

关键词： MgO-CaO refractory aggregate TiO_(2)addition Phase composition Microstructure Hydration resistance

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Mo@PANI-catalyzed oxidative deoximation reaction

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Chinese Chemical Letters 2024年第2期35卷 407-410页

作者： Yiyang zhang wen li Zuofeng Hu Xiaobi Jing Lei Yu School of Mechanical Engineering Yangzhou UniversityYangzhou 225127China School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225002China Yangzhou Yangzi Auto Interior & Exterior Co. Ltd.Yangzhou 225119China

Deoximation is an important transformation in synthetic *** can be employed in protection,characterization and purification of the carbonyls,and in the synthesis of ketones from non-carbonyl *** the field,oxidative deoximation reaction can utilize the driving force caused by the oxidation process so that the reaction can occur under relatively mild ***,we designed and prepared polyaniline-supported molybdenum(Mo@PANI)just by immersing PANI into the EtOH/H_(2)O solution of MoCl_(5).The material was successfully applied as the efficient catalyst for oxidative deoximation reactions,which were performed in ethanol using H_(2)O_(2)as the clean *** substrate scope of the reaction was *** could be applied on heterocycle-containing substrates,making this protocol preferable for pharmaceutical intermediate *** Mo is a necessary trace element for both animals and plants,this method is environment-friendly and is suitable for large-scale *** work as the first example of Mo-catalyzed oxidative deoximation reaction may inspire novel ideas for both catalyst design and synthetic process development.

关键词： Molybdenum Polyaniline Oxidation Deoximation Carbonyl

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BrrTCP4b interacts with BrrTTG1 to suppress the development of trichomes in Brassica rapa var. rapa

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Plant Diversity 2024年第3期46卷 416-420页

作者： Cheng li li zhang Hefan li Yuanwen Duan Xuemei wen Yongping Yang Xudong Sun The Germplasm Bank of Wild Species Yunnan Key Laboratory of Crop Wild Relatives OmicsInstitute of Tibetan Plateau Research at KunmingKunming Institute of BotanyChinese Academy of SciencesKunming 650201China University of Chinese Academy of Sciences BeijingChina Tibet Plateau Institute of Biology Lhasa 850001TibetChina

The number of trichomes significantly increased in CRISPR/Cas9-edited BrrTCP4b turnip(Brassica rapa ***)***,the underlying molecular mechanism remains to be *** this study,we performed the Y2H screen using BrrTCP4b as the bait,which unveiled an interaction between BrrTCP4b and BrrTTG1,a pivotal WD40-repeat protein transcription factor in the MYB-bHLH-WD40(MBW)*** physical interaction was further validated through bimolecular luciferase complementation and ***,it was found that the interaction between BrrTCP4b and BrrTTG1 could inhibit the activity of MBW complex,resulting in decreased expression of BrrGL2,a positive regulator of trichomes *** contrast,AtTCP4 is known to regulate trichomes development by interacting with AtGL3 in Arabidopsis ***,this study revealed that BrrTCP4b is involved in trichome development by interacting with BrrTTG1 in turnip,indicating a divergence from the mechanisms observed in model plant *** findings contribute to our understanding of the regulatory mechanisms governing trichome development in the non-model plants turnip.

关键词： TCP transcription factor MBW complex Trichome development Turnip

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Tb(Ⅲ)functionalized MOF based self-calibrating sensor integrated with logic gate operation for efficient epinephrine detection in serum

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Journal of Rare Earths 2024年第5期42卷 987-994,I0006页

作者： Dongsheng Zhao wenqian li Rongmei wen wencui li Xin liu Xiutang zhang liming Fan Shanxi Key Laboratory of Advanced Carbon Electrode Materials Shanxi Coal Mine Water Treatment Technology Innovation CenterSchool of Chemistry and Chemical EngineeringNorth University of ChinaTaiyuan030051China Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) College of ChemistryNankai UniversityTianjin300071China

By anchoring Tb^(3+)ions on its free carboxyl groups of the nanocaged NiMOF,a dual-emission self-calibrating sensor of Tb^(3+)@NiMOF was fabricated through coordination post-synthetic modification(PSM)*** Tb^(3+)ions as the secondary fluorescent signal and sensing active sites,Tb^(3+)@NiMOF presents great potentials in visually and efficiently monitoring EPI in serum,with high sensitivity and selectivity,fast response,excellent recyclable,and the low detection limit(LOD,3.06 ng/mL).Furthermore,a tandem combinational logic gate based intelligent detection system was constructed to improve the practicability and convenience of epinephrine(EPI)detection in serum by comparing the light emitted colour with the series standard colour cards preset in the *** work provides a promising approach of developing metal-organic frameworks(MOFs)based self-calibrating sensors for intelligent detection of bioactive molecules.

关键词： Metal-organic framework Post-synthetic modification Self-calibrating sensor Logic gate operation Epinephrine detection Rare earths

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Visual test paper based on Au/δ-MnO_(2) hollow nanosphere oxidase-like activity regulation using hexavalent chromium as a smart switch

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Rare Metals 2024年第2期43卷 711-722页

作者： wen-Chang Zhuang Hai-Yue zhang Zhen-Yang Chen wen-Jing Cheng Wei-Dan Na Zhao li lin Tian School of Materials and Chemical Engineering Xuzhou University of TechnologyXuzhou221018China School of Chemistry and Environmental Science Yili Normal UniversityYining835000China

Paper-based sensing platform is a point of need analytical toolkit for safety ***,the sensitivity,specificity,and simplicity are still ***,we report a novel strategy(Au/δ-MnO_(2) hollow nanosphere and 3,3′,5,5′-tetramethylbenzidine(TMB)induced test strips for signal-on detection)that can be utilized for hexavalent chromium(Cr^(6+))***,Cr^(6+)(CrO_(4)^(2−)) as a smart switch can remarkably enhance the oxidase-like activity of Au/δ-MnO_(2) hollow *** presence of Cr^(6+) can regulate the surface electronic redistribution of Au/δ-MnO_(2) and adjust the geometric configuration,which leads to the improvement in oxidase-like activity of Au/δ-MnO_(2).As a proof-of-concept application,a visual paper-based sensing platform of Cr^(6+) along with quantitative analysis by the test strips was successfully *** paper-based sensing platform exhibits a linear range with excellent selectivity for other interfering substances and lower limit of detection of 0.09μmol·L^(−1),providing a promising toolkit at-home Cr^(6+) measurement and environmental monitoring.

关键词： Point of need Colorimetric biosensing platform Au/δ-MnO_(2) hollow nanosphere Test strip Cr^(6+)

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Epigenetics:Mechanisms,potential roles,and therapeutic strategies in cancer progression

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Genes & Diseases 2024年第5期11卷 300-314页

作者： Dong Wang Yan zhang Qingbo li Yu li wen li Ao zhang Jingxuan Xu Jingyan Meng lin Tang Shuhua Lyu Graduate School Tianjin University of Traditional Chinese MedicineTianjin 301617China College of Traditional Chinese Medicine Tianjin University of Traditional Chinese MedicineTianjin 301617China Department of Pathology Tianjin Union Medical CenterTianjin 300121China

Mutations or abnormal expression of oncogenes and tumor suppressor genes are known to cause *** studies have shown that epigenetic modifications are key drivers of cancer development and ***,the mechanistic role of epigenetic dysregulation in the tumor microenvironment is not fully ***,we reviewed the role of epigenetic modifications of cancer cells and non-cancer cells in the tumor microenvironment and recent research advances in cancer epigenetic *** addition,we discussed the great potential of epigenetic combination therapies in the clinical treatment of ***,there are still some challenges in the field of cancer epigenetics,such as epigenetic tumor heterogeneity,epigenetic drug heterogeneity,and crosstalk between epigenetics,proteomics,metabolomics,and other omics,which may be the focus and difficulty of cancer treatment in the *** conclusion,epigenetic modifications in the tumor microenvironment are essential for future epigenetic drug development and the comprehensive treatment of *** combination therapy may be a novel strategy for the future clinical treatment of cancer.

关键词： Cancer Epigenetics Gene expression Heterogeneity Tumor microenvironment

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State of the art of lightweight aggregates used in lightweight refractories for working lining of high-temperature furnaces

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Journal of Iron and Steel Research(International) 2024年第6期31卷 1320-1343页

作者： Wei zhang wen-yong Dai Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016LiaoningChina Research and Development Department AGC Plibrico(Dalian)Industries Inc.Dalian 116600LiaoningChina

lightweight refractories for the working lining of high-temperature furnaces play an important role in the smelting of advanced steels and *** prepare lightweight refractories for the working lining of high-temperature furnaces,the synthesis of lightweight aggregates is the ***,the research on the synthesis of lightweight aggregates with high service temperature,low thermal conductivity,high strength,and good slag resistance has received widespread *** available literature on the synthesis of lightweight aggregates was summarized,including corundum,mullite,mullite-corundum,spinel,corundum-spinel,cordierite,cordierite-mullite,calcium hexaluminate,corundum-calcium hexaluminate,bauxite,magnesia,magnesia-based,and forsterite-based ***,the future development trend of lightweight aggregates was proposed.

关键词： lightweight aggregate lightweight refractory Working lining Apparent porosity Closed porosity Thermal conductivity Pore-forming approach

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Enhanced thermoelectric and mechanical properties of Bi_(0.5)Sb_(1.5)Te_(3) alloy with dispersed yttrium oxide ceramic nanoparticles

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Rare Metals 2024年第4期43卷 1758-1768页

作者： Cun-Cheng li Ming-Wei zhang Ji-Wu Xin Lei Wei wen-Yu Zhao School of Materials Science and Engineering Shandong University of TechnologyZibo255000China School of Electrical and Electronic Engineering Nanyang Technological UniversitySingapore639798Singapore State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan430070China

Reducing thermal conductivity while avoiding adverse interfacial reactions during sintering is crucial for improving the thermoelectric performance of Bi_(2)Te_(3)based *** ceramic nanoparticles are good candidates for achieving this *** this study,we designed and prepared a series of p-type Bi_(0.5)Sb_(1.5)Te_(3)nanocomposites decorated with Y_(2)O_(3)ceramic nanoparticles via ball-milling dispersion and spark-plasma *** to the chemical stability of the ceramics,no traces of atomic doping or interfacial reactions were *** measurements revealed that the Y_(2)O_(3)nanoparticles distributed along the grain boundaries acted as energy-dependent carrier-filtering centers to improve the scattering parameter and Seebeck coefficient,contributing to the elevated power factor even with a decreased electrical ***,the incorporated Y_(2)O_(3)nanoparticles and various defect structures they induced effectively strengthened the phonon scattering and suppressed the lattice thermal ***,a peak figure of merit(ZT)of 1.23 at 313 K was achieved for 0.4%Y_(2)O_(3)/Bi_(0.5)Sb_(1.5)Te_(3),which is 13%higher than that of the *** addition,the Vickers hardness of the composite material was 35%higher than that of the *** study demonstrates the effectiveness of ceramic nanoparticles in synergistic ally improving the thermoelectric and mechanical properties,which may be further extended to other thermoelectric systems.

关键词： Bi_(0.5)Sb_(1.5)Te_3 alloy Y_(2)O_(3) ceramic nanoparticles Microstructures Thermoelectric performance Mechanical properties

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Synergy of inside doped metals–Outside coated graphene to enhance hydrogen storage in magnesium-based alloys

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Journal of Magnesium and Alloys 2024年第6期12卷 2462-2471页

作者： Kun zhang Yu Chang Jingjing Lei Jing Chen Tingzhi Si Xiaoli Ding Ping Cui Hai-wen li Qingan zhang Yongtao li School of Materials Science and Engineering&Low-Carbon New Materials Research Center Anhui University of TechnologyMaanshanAnhui 243002China Institute of Nuclear and New Energy Technology Tsinghua UniversityBeijing100084 Hefei General Machinery Research Institute HefeiAnhui 230031China Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials of Ministry of Education Anhui University of TechnologyMaanshan 243002China

Grain growth of magnesium(Mg)and its hydride is one of the main reasons for kinetic and capacity degradation during the hydrogen absorption and desorption *** solve this problem,herein we propose a novel method involving synergistic effect of inside embedded metals and outside coated graphene to limit the growth of Mg and its hydride *** graphene coated Mg-Y-Al alloys were selected as a model system for demonstrating this positive effect where the Mg_(91)Y_(3)Al_(6)alloy was first prepared by rapidly solidified method and then high-pressure milled with 5 wt%graphene upon 5 MPa hydrogen gas for obtaining in-situ formed YAl_(2)and YH_(3)embedded in the MgH_(2)matrix with graphene shell(denoted as MgH_(2)-Y-Al@GR).In comparison to pure MgH_(2),the obtained MgH_(2)-Y-Al@GR composites deliver much better kinetics and more stable cyclic *** instance,the MgH_(2)-Y-Al@GR can release about 6.1 wt%H_(2)within 30 min at 300°C but pure MgH_(2)only desorbs∼1.5 wt%H_(2).The activation energy for desorption of MgH_(2)-Y-Al@GR samples is calculated to be 75.3±9.1 kJ/mol that is much lower than approximately 160 kJ/mol for pure MgH_(2).Moreover,its capacity retention is promoted from∼57%of pure MgH_(2)to∼84%after 50th cycles without obvious particle agglomeration and grain *** synergistic effect of outside graphene coating with inside embedded metals which could provide a huge number of active sites for catalysis as well as inhibit the grain growth of Mg and its hydride is believed to be responsible for these.

关键词： Energy Hydrogen storage Mg alloys Synergy effect

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