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Surface deco.ation of mesocarbon microbeads with multifunctional TiNbO_(4-x)@C co.ting layer as high rate and stable anode of Li-ion batteries

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Rare Metals 2024年第5期43卷 2053-2066页

作者： Jia-Mei Lai Zhi-Min Zou Yu Bai Yu-Tao Xing Chun-Hai Jiang Fujian Provincial Key Laboratory of Functional materials and Applications Institute of Advanced Energy MaterialsSchool of Materials Science and EngineeringXiamen University of TechnologyXiamen 361024China Shanghai XFH Science and Technology Development co. Ltd.Shanghai 200949China Fujian XFH New Energy materials co. Ltd.Yong'an 366000China Shenzhen XFH Science and Technology co. Ltd.Shenzhen 518071China Laboratorio de Microsco.ia Eletronica de Alta Resolucao Centro de Caracterizagao Avangada Para a Industria de Petroleo(LaMAR/CAIPE)Universidade Federal FluminenseNiteroiRJ 24210-346Brazil

Surface modification of graphite anode with electroactive matters has been proven of a more practical strategy in enhancing the performance of Li-ion batteries than exploring alternative novel anode ***,rutile TiNbO_(4-x) nanoparticles with a tunnel structure are employed as multifunctional deco.ation substances in co.bination with a carbon co.ting layer to improve the rate and cycle properties of mesocarbon microbeads(MCMBs).As co.pared to pristine MCMB,the Li^(+)diffusion co.fficients of the co.posite anodes are enhanced due to the synergistic effect of TiNbO_(4-x)@***,the overcharge and voltage polarization of the co.posite anodes at high rate are obviously minimized due to the current sharing effect of the high-potential TiNbO_(4-x).Moreover,the amorphous Li_(y)TiNbO_(4-x) co.verted from TiNbO_(4-x) in the initial lithiation process can deliver pseudocapacitive capacity to the co.posite anodes from the seco.d *** of these functions of TiNbO_(4-x)@Cco.ting layer have directly co.tributed to the improved rate and cycle performance of the MCMB/TiNbO_(4-x)@C co.posite *** one co.taining 12.0 wt%TiNbO_(4-x) exhibits a high reversible specific capacity of 118 m Ah·g^(-1)at 10C(1C=372 m A·g^(-1)),together with a high capacity retention of 90.9%after 300 cycles at 3C,which are all much superior to those of pristine MCMB.

关键词： Li-ion batteries MCMB TiNbO_(4-x)@C Surface deco.ation Rate capability

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Effect of cerium on microstructure,texture and properties of ultrahigh-purity co.per

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Journal of Rare Earths 2024年第1期42卷 220-227,I0008页

作者： Yunxiao Hua Haitao Liu Kexing Song Jiangwei Wang Yin'gang Guo Jing Tian Huiwen Guo Provincial and Ministerial co.co.struction of co.laborative Innovation Center for Non-ferrous Metal New materials and advanced Processing Technology School of Materials Science and EngineeringHenan University of Science and TechnologyLuoyang471023China Henan Academy of Sciences Zhengzhou450000China Center of Electron Microsco.y and State Key Laboratory of Silico. materials School of Materials Science and EngineeringZhejiang UniversityHangzhou310027China Henan Zhongyuan Gold Smelter co. Ltd.Sanmenxia472100China Chinalco.Luoyang co.per Processing co. Ltd.Luoyang471039China

The effects of Ce addition(310 ppm and 1500 ppm)on the microstructure,texture and properties of ultrahigh-purity co.per(99.99999%)were systematically studied using scanning electron microsco.y(SEM),transmission electron microsco.y(TEM)and electron backscattered diffraction(EBSD)analyses,co.bined with the microhardness and co.ductivity *** the microstructure of the as-cast and as-extruded samples,the addition of Ce refines the grain size of the ultrahigh-purity co.per and the refinement effect of 310Ce alloy is greater than that of 1500Ce *** is due to the stronger co.pone nt superco.ling and the accele rated recrystallization caused by lower Ce co.*** addition,Ce can react with Cu to form the Cu-Ce eutectic phases,which are deformable during the hot ***,the added Ce can weaken the texture,showing a variation of brass recrystallization(BR),rotated cube,co.per and S texture co.ponents,which depends on the recrystallization,the particle stimulated nucleation(PSN)as well as the stacking fault energy(SFE).Most remarkably,the introduction of Ce enhances the hardness of the ultrahigh-purity co.per without obviously reducing its *** major{111}orientations and the stress distributions are responsible for such a superior co.ductivity of the Ce-co.taining alloys.

关键词： Ce addition Grain refinement Texture co.ductivity Ultrahigh-purity co.per Rare earths

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Relationship between the unique microstructures and behaviors of high-entropy alloys

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International Journal of Minerals,Metallurgy and materials 2024年第6期31卷 1350-1363页

作者： Yaqi Wu Peter KLiaw Ruixuan Li Weiran Zhang Guihong Geng Xuehui Yan Guiqun Liu Yong Zhang State Key Laboratory for advanced Metals and materials University of Science and Technology BeijingBeijing 100083China Department of materials Science and Engineering The University of TennesseeKnoxvilleTN 37996USA Xi’an Rare Metal materials Institute co.ltd. Xi’an 710016China School of materials Science and Engineering North Minzu UniversityYinchuan 750030China GRIMAT Engineering Institute co. Ltd.Beijing 101407China

High-entropy alloys(HEAs),which were introduced as a pioneering co.cept in 2004,have captured the keen interest of nu-merous ***,in this co.text,can be perceived as representing disorder and *** co.trast,elemental co.posi-tions within alloy systems occupy specific structural sites in space,a co.cept referred to as *** acco.dance with Shannon entropy,structure is analogous to ***,the arrangement of atoms within a material,termed its structure,plays a pivotal role in dictating its *** addition to expanding the array of options for alloy co.posites,HEAs afford ample opportunities for diverse structural *** profound influence of distinct structural features on the exceptional behaviors of alloys is undersco.ed by numer-ous *** features include remarkably high fracture strength with excellent ductility,antiballistic capability,exceptional radi-ation resistance,and co.rosion *** this paper,we delve into various unique material structures and properties while elucidating the intricate relationship between structure and performance.

关键词： high-entropy alloys unique microstructure special properties alloy design

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Inclusions modification by rare earth in steel and the resulting properties: A review

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Journal of Rare Earths 2024年第3期42卷 431-445,I0001页

作者： Xiaoqiang Wang Zhiwei Wu Bing Li Wenxiong Chen Jun Zhang Jian Mao co.lege of materials Science and Engineering Sichuan UniversityChengdu610065China Chengdu advanced Metal materials Industry Technology Research Institute co. Ltd.Chengdu610303China State Key Laboratory of Metal Material for Marine Equipment and Application Anshan114009China

Rare earth(RE) elements are excellent modifiers for non-metallic inclusions that inevitably appear in steel and affect steel properties. This paper reviews the research status of inclusions modification by RE elements and the changes it cause on steel properties. First, the inclusion changes caused by RE modification are described. Generally, after adding pure RE, the main evolution of inclusions occurs as M →M + RE-Al-O → RE-Al-O + RE_(2)O_(2)S → RE_(2)O_(2)S + RE—S/RE_(2)O_(2)S + RE-O with an increase in the RE co.tent(M represents the inclusions before RE addition). The type of final inclusion obtained after RE modification is related to the relative co.tents of S and O in the steel. Moreover, fine, regular, and uniformly distributed inclusions can be obtained with appropriate RE addition. However, the effectiveness of inclusions modification by adding both RE and non-RE elements is closely related to the order of their addition. Seco.d, the applications and advantages of thermodynamic calculations in the study of RE-modified inclusions are introduced. Third, the changes in the co.rosion resistance, impact properties,and other properties of steel caused by the modification of inclusions by RE are reviewed. Finally, the perspectives and trends of inclusions modified by RE elements in the steel industry are presented.

关键词： Rare earths Inclusions Modification Thermodynamic calculation Properties change

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Hot Deformation Behavior and Workability of a New Ni–W–Cr Superalloy for Molten Salt Reactors

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Acta Metallurgica Sinica(English Letters) 2024年第8期37卷 1453-1466页

作者： Long Liu Zijian Zhou Jie Yu Xinguang Wang Chuanyong Cui Rui Zhang Yizhou Zhou Xiaofeng Sun Shi‑Changxu Innovation Center for advanced materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Fushun Special Steel co. LtdFushun 113000China

The hot deformation behavior of a newly developed Ni–W–Cr superalloy for use in 800℃molten salt reactors(MSRs)was looked into by isothermal co.pression tests in the temperature range of 1050–1200℃with a strain rate of 0.001–1 s^(−1)under a true strain of *** Arrhenius-type model for the Ni–W–Cr superalloy was co.structed by fitting the co.rected flow stress *** this model,the effect of dispersion of solid solution elements during thermal deformation on microstructure evolution was co.sidered,as well as the effects of friction and adiabatic heating on the temperature and strain rate-dependent variation of flow *** hot deformation activation energy of the Ni–W–Cr superalloy was 323 kJ/mol,which was less than that of the Hastelloy N alloy(currently used in MSRs).Acco.ding to the rectified flow stress data,processing maps were *** co.junction with the co.responding deformation microstructures,the flow instability domains of the Ni–W–Cr superalloy were determined to be 1050–1160℃/0.03–1 s^(−1)and 1170–1200℃/0.001–0.09 s^(−1).In these deformation co.ditions,a locally inhomogeneous microstructure was caused by flow-i.e.,inco.plete dynamic recrystallization and hot working parameters should avoid sliding into these *** ideal processing hot deformation domain for the Ni–W–Cr superalloy was determined to be 1170–1200℃/0.6–1 s^(−1).

关键词： Ni-W-Cr Superalloy Hot deformation behavior co.stitutive equation Processing map Microstructure evolution

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3D printed silico.-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 silico. 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 silico. anodes have shown extraordinary lithium storage properties for lithium-ion batteries(LIBs)but are usually achieved at low areal loadings(co.-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 microsco.e and ex-situ scanning electron microsco.e(SEM)co.firm that the hierarchically porous filaments with interco.nected carbon skeletons effectively suppress the volume change of silico. 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 co.lombic efficiency(ICE)of 96%.This work validates the feasibility of 3D printing on co.structing high mass loading silico. anode for practical high energy-density LIBs.

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

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co.posite structure Al_(2)O_(3)/Al_(2)O_(3)-YAG:Ce/YAG ceramics with high co.or spatial uniformity for white laser lighting

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Journal of advanced Ceramics 2024年第2期13卷 189-197页

作者： Pengfei Sang Le Zhang Jian Kang Mingzhou Li Shiwei Chen Peng Yang Bingheng Sun Yang Li Wieslaw Strek Hao Chen Jiangsu Key Laboratory of advanced Laser materials and Devices School of Physics and Electronics EngineeringJiangsu Normal UniversityXuzhou 221116China Jiangsu Xiyi advanced materials Research Institute of Industrial Technology Xuzhou 221400China Xuzhou EAGLED Technology co. Ltd.Xuzhou 221116China Xuzhou Kangna advanced materials Technology co. Ltd.Xuzhou 221116China Xuzhou Fuchang Electronic Technology co. Ltd.Xuzhou 221116China Shanghai Institute of Optics Fine Mechanics Chinese Academy of SciencesShanghai 201800China School of Material Science and Engineering Shanghai Institute of TechnologyShanghai 201418China State Key Laboratory of Crystal materials Shandong UniversityJinan 250100China Institute of Low Temperature and Structure Research Polish Academy of SciencesWroclaw 50-422Poland

co.posite ceramic phosphor(CCP)is a candidate light-co.version material to obtain the high-quality laser lighting *** based on the transmissive co.figuration model co.ld not simultaneously meet the requirements of angular co.or uniformity and high thermal *** this study,a novel co.posite structure ceramic was designed,including Al_(2)O_(3)-YAG:Ce/YAG layered ceramic with a size of 1 mm×1 mm for lighting,and Al_(2)O_(3) ceramic(φ=16.0 mm)was used as the wrapping material due to its outstanding thermal *** prepared ceramics exhibited excellent thermal performance and no yellow ring *** this design,we achieved the match of the intensity distribution of the blue and yellow lights,resulting in a high angular co.or uniformity of 0.9 with a view angle of±80°.All ceramics showed no luminous saturation phenomenon,even the laser power density was increased up to 47.51 W/mm^(2).A high-brightness white-light source with a luminous flux of 618 lm,a luminous efficiency of 126 lm/W,a CCT of 6615 K,and a CRI of 69.9 was obtained in the transmissive *** particular,the surface temperature of the ceramic was as low as 74.1℃ under a high laser radiation(47.51 W/mm^(2)).These results indicate that Al_(2)O_(3)/Al_(2)O_(3)-YAG:Ce/YAG co.posite structure ceramic is a promising luminescent material in the high-power laser lighting applications.

关键词： Al_(2)O_(3)/Al_(2)O_(3)-YAG:Ce/YAG angular co.or uniformity high thermal stability high-power laser lighting

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An efficient CuZr-based metallic glasses electrode material for electrocatalytic degradation of azo dyes

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Journal of Environmental Sciences 2024年第2期136卷 537-546页

作者： Zhiwang Deng Bowen Zhao Songtao Li Zhengkun Li Shiming Zhang Kewei Zhang Zhengwang Zhu Taiyuan University of Science and Technology School of materials science and engineeringTaiyuan 030024China Shi-changxu Innovation Center for advanced materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Chinese Academy of Sciences Key Laboratory of Nuclear materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Qingdao Yunlu advanced materials Technology co. Ltd.Qingdao 266232China

Metallic glasses have received a lot of attention on wastewater treatment due to their unique atomic structure,and the use of metallic glasses as electrodes has produced unexpected electrocatalytic degradation effects for many pollutants through co.bining with electrochemical ***,it still is a formidable challenge to find a metallic glass electrode material with both efficient and clean for the catalytic degradation of *** this work,the Cu_(55)Zr_(45)metallic glassy ribbons are used as an electrode to degrade azo dyes and show the excellent degradation effect,which can reach 95.6%within 40 *** the degradation process,almost no additives are produced and Cu_(55)Zr_(45)metallic glassy ribbons have excellent effects under different pH ***,it exhibits good stability for degradation efficiency during the 8 cycle degradation tests of the amorphous alloy *** the co.per nanoparticles are exposed on the surface of the ribbons,the oxidized co.per obtained synergistically produce activated radicals is the primary degradation mechanism,where the auxiliary degradation mechanisms include electron transfer and the promotion of active *** research develops a new type of electrode material for wastewater treatment,and the eco.omy and high efficiency of Cu55Zr45metallic glass endow it the expandable functional applications.

关键词： Metallic glasses Azo dyes Electrocatalytic Degradation Oxidized co.per

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Antimony doped CsPbI_(2)Br for high-stability all-inorganic perovskite solar cells

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Nano Research 2024年第3期17卷 1508-1515页

作者： Mengfei Zhu Lina Qin Yuren Xia Junchuan Liang Yaoda Wang Daocheng Hong Yuxi Tian Zuoxiu Tie Zhong Jin State Key Laboratory of co.rdination Chemistry Ministry of Education(MOE)Key Laboratory of Mesoscopic ChemistryMOE Key Laboratory of High Performance Polymer Materials and TechnologyJiangsu Key Laboratory of Advanced Organic MaterialsSchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China Nanjing Tieming Energy Technology co. Ltd.Nanjing 210093China Suzhou Tierui New Energy Technology co. Ltd.Suzhou 215228China

All-inorganic perovskites,adopting cesium(Cs+)cation to co.pletely replace the organic co.ponent of A-sites of hybrid organic–inorganic halide perovskites,have attracted much attention owing to the excellent thermal ***,all-inorganic iodine-based perovskites generally exhibit poor phase stability in ambient ***,we propose an efficient strategy to introduce antimony(Sb^(3+))into the crystalline lattices of CsPbI_(2)Br perovskite,which can effectively regulate the growth of perovskite crystals to obtain a more stable perovskite *** to the much smaller ionic radius and lower electronegativity of trivalent Sb^(3+)than those of Pb^(2+),the Sb^(3+)doping can decrease surface defects and suppress charge reco.bination,resulting in longer carrier lifetime and negligible *** a result,the all-inorganic perovskite solar cells(PSCs)based on 0.25%Sb^(3+)doped CsPbI_(2)Br light absorber and screen-printable nanocarbon co.nter electrode achieved a power co.version efficiency of 11.06%,which is 16%higher than that of the co.trol devices without Sb^(3+)***,the Sb^(3+)doped all-inorganic PSCs also exhibited greatly improved endurance against heat and *** to the use of low-co.t and easy-to-process nanocarbon co.nter electrodes,the manufacturing process of the all-inorganic PSCs is very co.venient and highly repeatable,and the manufacturing co.t can be greatly *** work offers a promising approach to co.structing high-stability all-inorganic PSCs by introducing appropriate lattice doping.

关键词： all-inorganic perovskite solar cells Sb doped cesium lead halide perovskites foreign B-site ions hole-co.ductor-free phase stability improvement

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Integrating Bimetallic Nanoparticles with co.alent Organic Frameworks as Multifunctional Nanozyme for co.orimetric Detection of Hydrogen Peroxide and Glutathione

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Journal of Analysis and Testing 2024年第3期8卷 278-287页

作者： Yuying Yuan Xiaoxue Xi Ting Bao Pingguan Bian Feng Pei Xiuhua Zhang Shengfu Wang Wei Wen co.laborative Innovation Center for advanced Organic Chemical materials Co-constructed by the Province and Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional MoleculesCollege of Chemistry and Chemical EngineeringHubei University Hubei Yihua Chemical co. Ltd

The co.trollable growth of metal nanoparticles on nanomaterials is beco.ing an effective strategy for developing nanoco.posites with designated performance. Herein, a simple and mild strategy for the in situ growth of Pt–Pd bimetallic nanoparticles on co.alent organic frameworks（co.s） to regulate the nanozyme activity was designed for co.orimetric detection of hydrogen peroxide（H2O2） and glutathione（GSH）. The co.s not only offer sufficient loading sites for the uniform dispersion of Pt–Pd bimetallic nanoparticles, but also increase the adsorption of substrate to promote the catalytic reaction. With the bimetallic synergistic effect of Pt–Pd nanoparticles, the prepared multifunctional nanozyme（Pt–Pd/co.s nanozyme） simultaneously exhibited superior peroxidase（POD）-like activity and oxidase（OXD）-like activity. Using the multifunctional nanozyme, a co.orimetric sensing system was co.structed for sensitive detection of H2O2and GSH, with the wide linear ranges of 5–1000 μmol/L and 1–40 μmol/L, and the detection limits were 1.14 μmol/L and 0.43 μmol/L, respectively. It was successfully used for the detection of real samples in environmental water and serum, providing a simple method for disease diagnosis and environmental monitoring.

关键词： Bimetallic synergistic effect H2O2 and GSH detection Oxidase-like activity Peroxidase-like activity Pt–Pd/co.s nanozyme

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