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稀有金属（英文版）
稀有金属（英文版）

屠海令

双月刊

1001-0521

rmchina@263.net

010-82240869

100083

学院路30号

稀有金属（英文版）/Journal Rare MetalsCSCDCSTPCD北大核心EISCI
查看更多>>本刊以稀有金属材料研究、开发和冶炼为特色，主要报道稀有金属和部分有色金属在材料研制、合金加工、选矿、冶炼、理化分析测试等方面的最新研究成果，同时报道超导材料、半导体材料、复合材料、陶瓷材料、贮氢材料、磁性材料和纳米材料的研制与性能。
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    A review on WO3-based composite photocatalysts:synthesis,catalytic mechanism and diversified applications

    Xue ZhangZi-Qi ZhangYan-Dong SunXiao-Jia Ma...
    3441-3459页
    查看更多>>摘要：Photocatalysis as an emerging"green"energy conversion technology has attracted domestic and interna-tional attention.This technology uses semiconductor pho-tocatalysts to convert solar energy into directly usable chemical energy,showing great potential for application in environmental pollutant purification and clean energy production,with broad development prospects.Among many semiconductor materials,tungsten trioxide(WO3)is favored by researchers in the field of photocatalysis because of its good visible light response and excellent valence band hole oxidation properties.Currently,a large number of photocatalysts based on WO3,in particular WO3-based composite photocatalysts,have been reported,and their applications cover a wide range of fields.In order to promote the development of WO3-based photocatalysts and provide a reference for colleagues,we present a sys-tematic summary of the applications and research progress of WO3-based composites in the field of photocatalysis in recent years.Starting from the structural properties of WO3 itself,this article summarizes the preparation methods and structure-activity relationships of WO3-based composite photocatalysts.Subsequently,it introduces the current application status of existing WO3-based composite pho-tocatalysts in CO2 reduction,hydrogen production,nitro-gen fixation,and pollutant removal.Finally,the development prospects were analyzed.
      原文链接:
    • 万方数据

    Metal-to-insulator transition in platinum group compounds

    Yu-Xuan XiaJian-Gang HeNuo-Fu ChenJi-Kun Chen...
    3460-3474页
    查看更多>>摘要：The metal-to-insulator transition(MIT)as usu-ally achieved in 3d-orbital transitional metal(TM)com-pounds opens up a new paradigm in correlated electronics via triggering abrupt variations in their transportation properties.Compared to such 3d-orbital TM compounds,the MIT within the platinum group(Pg)element com-pounds based on the 4d-and 5d-orbital configurations is more complicated,owing to their elevation in the spin-orbit coupling and meanwhile weakened intra-atomic Coulomb repulsions.This brings in a new freedom to regulate the balance in their metallic or semiconductive orbital configurations,while their MIT properties can be potentially combined with their spintronic properties to enable new electronic applications.Herein,we review the electronic transport and MIT behaviors within the existing family of Pg-containing compounds,particularly those showing first-order MIT behaviors that can be useful in correlated electronics.It is also hoped that summarizing the presently reported Pg-containing MIT compounds will lead to the discovery of more new material families and/or new mechanisms associated with the Pg-containing compounds showing MIT properties.
      原文链接:
    • 万方数据
    • 维普

    A state-of-the-art review on delayed expansion of cemented paste backfill materials

    Meng-Yuan LiLi-Jie GuoYue ZhaoLei Zhang...
    3475-3500页
    查看更多>>摘要：Utilizing delayed expansion cemented paste backfill materials(DECPB)in mine backfill operations offers an effective solution to the challenge of achieving proper contact between the in-situ cemented backfill mass and the roof in mined-out areas(backfill-roof contact).This article presents recent progress in both theoretical and experimental research concerning DECPB.The types and mechanisms of expansive additives,including expansive agents,foaming agents,and expansive mineral materials relevant to DECPB,are explained,along with their impact on the expansive properties and mechanical characteristics of DECPB.The composition,material characteristics,preparation methods,and controlled release mechanisms of microcapsules are analyzed.Two methods for measuring the volume change rate of paste backfill slurries are dis-cussed.Research indicates that an appropriate content of expansive additives not only enhances the expansive properties of cemented paste backfill materials but also contributes to improving their mechanical properties.Chemical foaming agents and bentonite are found to be more suitable for preparing DECPB compared to expansive agents.The delayed expansion of cemented paste backfill material is influenced by microcapsules,with their wall materials,preparation parameters,and the alkaline slurry environment affecting their controlled release mechanism.Developing and optimizing precise measurement devices and methods forfor the volume change rate of cemented paste backfill materials is essential requirement for study-ing the performance of DECPB.Combining delayed expansion technology with retarding techniques in cemented paste backfill materials can provide a reliable solution for achieving proper backfill-roof contact in the future.
      原文链接:
    • 万方数据
    • 维普

    Nanodiamond:a promising metal-free nanoscale material in photocatalysis and electrocatalysis

    Xiao-Wu GaoZi-Wei ZhaoYang HeSai-Fei Fan...
    3501-3552页
    查看更多>>摘要：Benefiting from its surface-rich functional groups,eco-friendliness,impressive electrochemical prop-erties,excellent light absorption,structural tunability at the atomic/morphological level,and ultra-high stability under harsh conditions,nanodiamond has emerged as a promising carbon-based non-metallic material in the field of energy conversion such as electrocatalysis and photocatalysis.Furthermore,nanodiamond,as a new generation of green catalysts,can overcome the poisoning of catalysts by complex pollutants in advanced oxidation processes,thus effectively removing organic matter from water,which is unparalleled in reducing the cost of water purification and avoiding secondary cross-contamination of water by tra-ditional heavy metal-based catalysts.Here,we review the research and development of nanodiamonds as major electrocatalysts and photocatalysts for energy conversion and for air/water treatment for environmental remediation.The relevant properties,trimming strategy,mechanistic understanding,and design principles of nanodiamond as a catalyst are described,as well as the challenges and pro-spects of this emerging field.
      原文链接:
    • 万方数据
    • 维普

    Application of in-situ characterization techniques in modern aqueous batteries

    Jia-Hao WuHong-Wei CaiZhao-Hui DengJean-Jacques Gaumet...
    3553-3575页
    查看更多>>摘要：The development of high-performance aqueous batteries calls for an in-depth knowledge of their charge-discharge redox and failure mechanism,as well as a sys-tematic understanding of the dynamic evolution of microstructure,phase composition,chemical composition,and local chemical environment of the materials for bat-tery.In-situ characterization technology is expected to understand and reveal the problems faced by aqueous rechargeable batteries,such as the dissolution of electrode materials,the growth of metal negative electrode dendrites,passivation,corrosion,side reactions and a series of problems.Based on this,typical in-situ characterization techniques and their basic mechanisms are summarized,including in-situ optical visualization,in-situ microscopy techniques(in-situ scanning electron microscopy(SEM),in-situ transmission electron microscopy(TEM)),in-situ X-ray techniques(in-situ X-ray diffraction(XRD),in-situ X-ray photoelectron spectroscopy(XPS),in-situ near-edge structural X-ray absorption spectroscopy(XANES)),and in-situ spectroscopy techniques(in-situ Raman spectroscopy,in-situ Fourier transform infrared(FTIR)).Moreover,some emerging techniques concerning aqueous battery research,especially gas evolution and materials dissolution issues,such as in-situ electrochemical quartz crystal microbalance(EQCM),in-situ fiber-optic sensing,in-situ gas chromatography(GC)are introduced.At last,the applications of advanced in-situ characterizations in future research of aqueous batteries are emphasized and discussed,along with some of the remaining challenges and possible solutions.
      原文链接:
    • 万方数据
    • 维普

    Single-atom catalysis for advanced oxidation and reduction systems in water decontamination

    Jie TengJin-Hui XuWen-Xin SunXue-Feng Liu...
    3576-3606页
    查看更多>>摘要：Water scarcity is an escalating global crisis,posing a severe threat to populations worldwide.Conse-quently,exploring various materials to remove emerging contaminants from freshwater sources has garnered sig-nificant attention.In this regard,single-atom catalysis(SACs)has emerged as a catalyst of scientific progress in water purification and treatment methodologies during recent decades.SACs exhibit exceptional catalytic activity,selectivity and stability,due to their near-perfect atom utilization,highly unsaturated coordination environment and uniform reaction centers.However,a comprehensive and critical review encompassing the successful integration of SACs into water purification processes needs to be completed.This review aims to accentuate recent trends by presenting the synthesis,structure,and environment and energy application-relevant properties of SACs.The results show that a comprehensive and multi-perspective summary of the advantages of SACs in environmental remediation can have significant benefits,such as fast kinetics,cost-effectiveness,selectivity.The oxidation and reduction processes of SACs and functional SACs materials in water purification were emphasized.Furthermore,the last section is devoted to the current research gaps and further per-spectives on the application of SACs in water treatment,which are summarized and analyzed.
      原文链接:
    • 万方数据
    • 维普

    Recent progress of two-dimensional metal-base catalysts in urea oxidation reaction

    Qi-Xiang HuangFang WangYong LiuBi-Ying Zhang...
    3607-3633页
    查看更多>>摘要：Urea oxidation reaction(UOR)is an auxiliary water electrolysis hydrogen production technology devel-oped in recent years to replace oxygen evolution reaction and reduce energy consumption,which can produce hydrogen more efficiently by low theoretical potential,reduce the average cost of electrochemical hydrogen pro-duction,and is a frontier research hotspot for renewable hydrogen energy.Two-dimensional(2D)nanomaterials as electrocatalysts have many favorable potential,such as it can effectively reduce the resistivity of materials and increase the specific surface area with certainty.This paper reviews the application of 2D materials in UOR in alkaline electrolytes.And a cross-sectional comparison of various material performance data including overpotential,Tafel slope,electrochemical active surface area(ECSA)and i-t stability test was conducted,which could illustrate the differences between materials composed of different ele-ments.In addition,the main challenges hindering the progress of research on 2D materials in urea electrocatal-ysis processes and promising materials in this field in future are summarized and prospected.It is believed that this review will contribute to designing and analyzing high-performance 2D urea electrocatalysts for water splitting.
      原文链接:
    • 万方数据
    • 维普

    In situ anchoring in carbon matrix of Bi2O2CO3 as a high-performance anode material for Li-ion batteries

    Pu-Qiang HeJun GuoHui HuangZhong-Cheng Guo...
    3634-3646页
    查看更多>>摘要：Bismuth-based anode materials have been regarded as promising Li-ion batteries due to their high theoretical capacity.However,their low conductivity and associated volume expansion inhabited their commercial-ization.In this work,Bi2O2CO3@C composites were suc-cessfully synthesized by in situ anchoring of flower-like Bi2O2CO3 nanosheets on a carbon-based substrate via hydrothermal.The unique composited structure of Bi2O2-CO3@C leads to a stable specific capacity of 547 mAh·g-1 after 100 cycles at a current density of 0.1 A·g-1.Notably,it demonstrates excellent rate capability with a specific capacity of 210 mAh·g-1 at 5 A·g-1.After 550 cycles at a current density of 0.5 A·g-1,a high reversible capacity of nearly 400 mAh·g-1 was observed.Additionally,in situ X-ray diffraction measurements clearly demonstrate the conversion between Bi and Li3Bi during alloying/dealloy-ing,confirming the good electrochemical reversibility of the materials for Li storage.The reaction kinetics of Bi2O2CO3@C were further investigated using galvanos-tatic intermittent titration technique.Furthermore,Bi2O2-CO3@C exhibited excellent long-term stability,maintaining its high reversible capacity for over 200 cycles at a current density of 0.5 A·g-1 in a full cell configuration using Li1.20Mn0.54Ni0.13Co0.13O2 as the cathode material.This result further underscores its promising potential for lithium-ion batteries.This work may provide inspiration for the design of alloy-type negative electrode materials for high-performance rechargeable batteries.
      原文链接:
    • 万方数据

    Rapid lithium-ion insertion/extraction and migration behavior of Na2WO4-encapsulated lithium-rich layered oxide cathode

    Yu-Shen ZhaoFan-Fan WangJian-Cang WangPeng-Fei Wang...
    3647-3660页
    查看更多>>摘要：Due to the low cost,high working voltage and high storage capacity,Li-rich Mn-based layered com-pounds show promise as the cathode materials for lithium-ion batteries(LIBs).However,the side reactions at the solid-liquid interface of the cathode will lead to rapid capacity decay and inferior rate performance.Herein,this article proposes a liquid-phase dispersion strategy to introduce a Na2WO4 layer on the Li1.2Ni0.13-Co0.13Mn0.54O2 cathode,which can reduce the side effects between raw materials and electrolyte and promote the insertion/extraction rate of Li+,thus enhancing the material stability and rate performance.As a result,the capacity retention rate is 96.9％after 200 cycles under 2C.More-over,the capacities are 177.5,149.5,111.1 and 58.3 mAh·g-1 at 1C,2C,5C and 10C,implying a superior fast charging performance.The exceptional performance can be ascribed to both the increased conductivity and enhanced structural stability of the cathode material.What's more,based on the investigation of ion insertion/extraction behavior in electrode materials and the ion migration kinetics in the electrolyte,this study suggests that coating Li-rich Mn-based materials with Na2WO4 can be a promising strategy to improve their performance in LIBs.
      原文链接:
    • 万方数据

    ZnO/ZnS heterostructure in N-doped porous carbon for anchoring-diffusion-conversion of polysulfides for high-performance lithium-sulfur batteries

    Fei WangRong-Wei HuangWen-Chang HanChun-Man Yang...
    3661-3676页
    查看更多>>摘要：The shuttle effect of polysulfides is one of the key factors hindering the commercialization of lithium-sulfur batteries(LSBs).Owing to their high conductivity and advantageous structure,heterostructures can be used in sulfur fixation and catalysis of LSBs.In this study,a flower-shaped ZnO/ZnS heterostructure on a nitrogen-doped porous carbon(NPC)sulfur host was designed.The ZnO/ZnS heterostructure regulates the electronic structure of the material and exhibits higher metal-like properties.Moreover,the ZnO/ZnS heterostructure combines the strong adsorption property of ZnO and the high catalytic ability of ZnS to realize the anchoring-diffusion-conversion of lithium polysulfides(LiPSs).Results reveal that the developed ZnO/ZnS@NPC/S cathode has excellent electrochemical performance in LSBs,achieving a high discharge specific capacity of 1365.3 mAh·g-1 at 0.1 C and excellent rate capability(719 mAh·g-1 at 2C;the capacity decay rate is only 0.042％per cycle after 1000 cycles).Even under a high sulfur loading-E/S(electrolyte/sulfur)ratio of 5.1 mg·cm-2-6 μl·mg-1,a high specific capacity of 723.7 mAh·g-1 is maintained after 60 cycles.This study provides a new strategy for a multifunctional sulfur host that can effectively alleviate the shuttle effect of LiPSs and improve the utilization of sulfur active substances.
      原文链接:
    • 万方数据
    • 维普