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High-voltage solid-sate electrolytes for advanced lithium-ion batteries

Journal of Energy Chemistry 2025年第6期105卷 713-731页

作者： Zhijun Wu Hao Tian Dali Ji Xin Zhang Lanxun Li Zichen Lou Wenping Sun Mingxia Gao Yongfeng Liu Hongge Pan Institute of Science and Technology for New Energy Xi'an Technological University Zhejiang Key Laboratory of Advanced Solid State Energy Storage Technology and Applications Taizhou Institute of Zhejiang University State Key Laboratory of Silicon Materials and School of Materials Science and Engineering Zhejiang University

Solid-state batteries(SSBs) are highly attractive on account of their high energy density and good *** high-voltage and high-current conditions,however,the interface reactions,structural changes,and decomposition of the electrolyte impede the transmission of lithium ions in all-solid-state lithium batteries(ASSLBs),significantly reducing the charging and discharging capacity and cycling stability of the battery and therefore restricting its practical *** main content of review is to conduct an in-depth analysis of the existing problems of solid-state batteries from the aspects of interface reactions,material failure,ion migration,and dendrite growth,and points out the main factors influencing the electrochemical performance of ***,the compatibility and ion conduction mechanisms between polymer electrolytes,inorganic solid electrolytes,and composite electrolytes and the electrode materials are ***,the perspectives of electrode materials,electrolyte properties,and interface modification are summarized and prospected,providing new optimization directions for the future commercialization of high-voltage solid-state electrolytes.

关键词： All-solid-state batteries High-voltage electrolytes interface compatibility Ionic conduction Solid-state electrolytes

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Enhanced broadband near-infrared luminescence via phase engineering of Cr3+-doped crystals

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Progress in Natural science: materials International 2025年第3期35卷 578-585页

作者： Liu, Shuaiyu Cui, Xiaoya Su, Ke Pan, Xin Wang, Yujia Yao, Lan Li, Qiaoling Mei, Lefu 100083 China Department of Materials Science and Engineering Southern University of Science and Technology Shenzhen518055 China State Key Laboratory of Physical Chemistry of Solid Surfaces Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials and College of Materials Xiamen University Xiamen China

As near-infrared spectroscopy technology is increasingly applied in fields such as biomedicine, food detection, and night vision, the demand for efficient near-infrared light sources is growing rapidly. However, traditional light sources, such as tungsten-halogen lamps and supercontinuum lasers, are hindered by low energy efficiency and bulky designs, limiting their suitability for advanced optical applications. Fluoride-based materials have attracted attention due to their low phonon energy and excellent optical transparency, making them promising candidates for next-generation light sources. Herein, cryolite-structured fluorides were synthesized to investigate their potential as efficient near-infrared emitters. Micron-sized Na3Sc1-xF6: xCr3+ and KyNa3-yScF6: 6 %Cr3+ crystals were prepared via a hydrothermal method. The influence of Cr3+ doping concentration and K+ substitution on crystal structure and luminescent performance were systematically explored. Cr3+ doping was found to induce lattice contraction and stabilize an octahedral crystal field, resulting in broadband near-infrared emission. Additionally, K+ substitution induces a phase transition, further enhancing luminescence and significantly extending fluorescence lifetimes. This work reveals the coupled effects of dopant concentration and structural modification in optimizing luminescent behavior. These findings provide valuable insights and theoretical guidance for the rational design and development of efficient near-infrared LED light sources, addressing essential challenges in advanced optical techniques. © 2025 Chinese materials Research Society

关键词： Near infrared spectroscopy

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Local chemical ordering and its impact on radiation damage behavior of multi-principal element alloys

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Journal of materials science & Technology 2023年第4期135卷 13-25页

作者： Leqing Liu Xiongjun Liu Qing Du Hui Wang Yuan Wu Suihe Jiang Zhaoping Lu Beijing Advanced Innovation Center for Materials Genome Engineering State Key Laboratory for Advanced Metals and MaterialsUniversity of Science and Technology BeijingBeijing 100083China

Multi-principal element alloys(MPEAs)have attracted much attention as future nuclear materials due to their extraordinary radiation *** this work,we have elucidated the development of local chemical orderings(LCOs)and their influences on radiation damage behavior in the typical CrFeNi MPEA by hybrid-molecular dynamics and Monte Carlo *** was found that considerable LCOs consist-ing of the Cr-Cr and Ni-Fe short-range orders existed in the ordered configuration with optimized system *** modeling the accumulation cascades up to 1000 recoils,we revealed that the size of de-fect clusters and dislocation loops is smaller in the ordered configuration than those in the random one,although the former formed more Frenkel pairs(i.e.,self-interstitials and vacancies).In addition,the dis-tribution of dislocation loops is relatively more dispersed in the ordered configuration,and the stair-rod dislocations related to irradiation swelling are also smaller,implying that the existence of LCOs is con-ducive to enhancing radiation damage *** understand the underlying mechanism,the effects of LCOs on the formation and evolution of defects and radiation resistance were discussed from the aspects of atomic bonding,migration path,and energy of defect diffusion,which provides theoretical guidance for the design of MPEAs with enhanced radiation resistance.

关键词： Multi-principal element alloys Local chemical ordering Radiation damage Dislocation evolution Molecular dynamics simulation

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Realization of highly asymmetric hydrogenated graphene in the van der Waals confined space

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National science Review 2025年第4期12卷 318-327页

作者： Xianlei Huang Hang Zheng Weilin Liu Li Zhu Guowen Yuan Jie Xu Kaiyuan Wang Lei Wang Shao-Chun Li Libo Gao National Laboratory of Solid State Microstructures Jiangsu Key Laboratory for NanotechnologySchool of PhysicsCollaborative Innovation Center of Advanced MicrostructuresNanjing University Anhui Provincial Key Laboratory of Magnetic Functional Materials and Devices School of Materials Science and Engineering Anhui University

The van der Waals(vdW) confined space provides a distinct environment from free space,enabling the production of two-dimensional Janus materials,like highly asymmetric hydrogenated graphene(AH-Gr).Here,we develop a vdW confined space assisted hydrogenation method to produce *** confined space between graphene and the substrate aggregates hydrogen radicals,making the bottom-side of graphene more prone to *** dense and homogeneous confined spaces between adjacent vdW crystals promote rapid and uniform distribution of carbon-hydrogen(C—H) *** hydrogen-to-carbon atomic(H/C) ratios can be quantitatively controlled by adjusting the permeated proton *** AH-Gr,regardless of H/C ratios,remain *** spatial distributions of C—H bonds significantly influence the electrical and magnetic properties of *** hydrogenation transforms graphene from a semi-metal to a semiconductor,suppresses the quantum Hall effect,and reduces the phase coherence *** study provides new insights into the preparation and characteristics of hydrogenated graphene,broadening the applications of vdW confined space.

关键词： van der Waals confined space highly asymmetric hydrogenated graphene proton

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Modulation of oxygen vacancies and hot electrons promotes highly efficient CO_(2) photoreduction towards C_(2)H_(6)

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Nano Research 2025年第4期18卷 90-97页

作者： Chengyang Zhu Hengming Huang Huiling Hu Jiaojiao Fang Junjie Mao Key Laboratory of Functional Molecular Solids Ministry of EducationCollege of Chemistry and Materials ScienceAnhui Normal UniversityWuhu 241002China College of Materials Science and Engineering State Key Laboratory of Materials-Orient Chemical EngineeringJiangsu Collaborative Innovation Center for Advanced Inorganic Function CompositesJiangsu National Synergetic Innovation Center for Advanced Materials(SICAM)Nanjing Tech UniversityNanjing 210009China

Efficient CO_(2) photoreduction towards C_(2+)solar fuels has emerged as one of the most promising strategies for alleviating the current energy and environment ***,the C-C coupling barriers and complex multi-electron transfer steps still limit the activity and selectivity of CO_(2)-to-C_(2) ***,Au nanoparticles(NPs)modified CeO_(2) with oxygen vacancies(Au/CeO_(2)-VO)were reported for enhancing the CO_(2)-to-C_(2)H_(6) photoreduction ***/CeO_(2)-VO achieved the high C_(2)H_(6) activity of 51.7μmol·g^(-1)·h^(-1),accompanied with C_(2)H_(6) selectivity up to 80% in the absence of sacrificial *** results combined with theoretical simulation indicated that VO strengthened CO_(2) adsorption and activated*CO production,and plasmon-induced hot electrons from Au NPs to CeO_(2)-VO facilitated the*CO-*CO *** synergistic modulation of VO and hot electrons further decreased the energy barriers of C-C coupling and subsequent hydrogenation,resulting in the superior photoreduction *** work opens an avenue of developing plasmonic photocatalysts for multi-carbon products from CO_(2) photoreduction.

关键词： synergistic modulation oxygen vacancy hot electrons CO_(2)photoreduction C_(2)H_(6)

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Tailoring precipitate distribution in 2024 aluminum alloy for improving strength and corrosion resistance

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Journal of materials science & Technology 2024年第27期194卷 16-27页

作者： Yong Zhang Lantian Zhang Xiang Gao Xulong An Le Zong Zhihong Jia Hao Zhou Yudong Sui Wenwen Sun Jiangsu Key Laboratory for Advanced Metallic Materials School of Materials Science and EngineeringSoutheast UniversityNanjing 211189China Department of Materials Science and Engineering Monash UniversityClaytonVICAustralia School of Materials Science and Engineering Changzhou UniversityChangzhou 213164China Key Laboratory for Light-weight Materials Nanjing Tech UniversityNanjing 210009China Nano and Heterogeneous Materials Center School of Materials Science and EngineeringNanjing University of Science and TechnologyNanjing 210094China School of Materials Science and Engineering Kunming University of Science and TechnologyKunming 650093China

For the traditional peak-aged (PA) AA2024 alloy, the formation of large S-phase precipitates within the grains, wide precipitate-free zones (PFZs) near the grain boundaries (GBs), and continuous distribution of grain boundary precipitates (GBPs) can be observed. As a result, the PA alloy exhibits relatively high strength but poor corrosion resistance. However, with the application of cyclic plasticity treatment, high-density 1–2 nm clusters form within the matrix, and no PFZs form near GBs. In this study, this treatment yields the optimal balance between strength–elongation characteristics and corrosion resistance. By combining cyclic plasticity and ageing heat treatment with different heating rates, the nanoscale clusters play a crucial role as heterogeneous nucleation sites, resulting in the formation of finer and higher number density of S precipitates within the matrix. Additionally, the presence of these clusters reduces the formation of GBPs and minimizes the width of PFZs. Consequently, compared to the traditional PA sample, this approach achieves a significantly higher yield strength (increased by 46 %) and ultimate tensile strength (increased by 18 %), along with superior corrosion resistance. Although the influence of ageing heat treatment with different rates on mechanical properties is not significant, it notably affects the formation of GBPs and corrosion resistance. Specifically, a slower heating rate leads to an increase in the spacing between adjacent GBPs, resulting in improved corrosion resistance. In summary, cyclic strengthening, as a novel method for alloy strengthening, when combined with ageing heat treatment, modulates the distribution of S precipitates within the matrix and GBs. This optimization maximizes the effects of precipitation strengthening and breaks the inverse relationship between strength and corrosion resistance.

关键词： Aluminum alloys Mechanical properties Intergranular corrosion Cyclic plasticity Precipitate-free zone Grain boundary precipitates

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Effect of alternative magnetic fields with different intensities on microstructure and mechanical properties of M50 steel during vacuum arc remelting

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Journal of Iron and Steel Research International 2025年第3期32卷 629-645页

作者： Guo-dong Deng Zhi-bin Xia Cheng-kuan Ma Yi-feng Guo Zhong-hao Sun Ming-liang Zhang Qi-zheng Chen Qiang Li Zhe Shen Biao Ding Tian-xiang Zheng Chun-mei Liu Yun-bo Zhong School of Materials Science and Engineering Shanghai UniversityShanghai200444China State Key Laboratory of Advanced Special Steel Shanghai UniversityShanghai200444China Shanghai Key Laboratory of Advanced Ferrometallurgy Shanghai UniversityShanghai200444China

The use of an alternative magnetic field during vacuum arc remelting(VAR)can have significant effects on the primary carbide and mechanical properties of M50-bearing *** solidification structure and the primary carbide morphology of the VAR ingot were analyzed by optical microscopy and scanning electron *** and analysis of the growth direction of primary carbides were conducted using high-resolution rapid electron backscatter *** elements segregation was analyzed using an electron probe *** was utilized to conduct numerical simulations to validate the experimental findings and elucidate the underlying *** to traditional VAR,magnetic-controlled VAR generates a horizontal circulation,which makes a shallower and flatter molten pool and a more even temperature *** the time dimension,the local solidification time is shortened,and the concentration of solute elements will be *** the spatial dimension,the secondary dendrite arm spacing decreases,alleviating the degree of inter-dendritic ***,the possibility of forming a segregation *** aspects promote the even distribution of solute atoms,resulting in less segregation and hindering the development of primary *** leads to the refinement of primary carbide size and its uniform *** magnetic-controlled vacuum arc melting not only refines the dendritic structure in the M50 ingot,causing it to expand more axially along the ingot,but also refines primary carbides and improves tensile and wear-resistant mechanical properties.

关键词： Primary carbide Microstructure Magnetic-controlled vacuum arc remelting M50-bearing steel Alternative magnetic field

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Constructing heterostructures of ZIF-67 derived C,N doped Co_(2)P and Ti_(2)VC_(2)T_(x)MXene for enhanced OER

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Journal of materials science & Technology 2023年第14期145卷 74-82页

作者： Jinzhou Li Chao Chen Zepeng Lv Wansen Ma Meng Wang Qian Li Jie Dang College of Materials Science and Engineering Chongqing UniversityChongqing 400044China College of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan 030024China State Key Laboratory of Advanced Special Steels&Shanghai Key Laboratory of Advanced Ferrometallurgy School of Materials Science and EngineeringShanghai UniversityShanghai 200444China

Oxygen evolution reaction(OER)is central to technologies such as electrochemical water splitting,and developing efficient and low-cost non-precious metal electrocatalysts for OER is of great significance to reducing cell voltage and developing hydrogen production by electrochemical water ***,we prepared a carbon,nitrogen co-doped porous Co_(2)P derived from the metal-organic framework(ZIF-67),which is anchored on bimetallic MXene nanosheets(named MX@MOF-Co_(2)P).It was used as the OER catalyst and exhibited great electrocatalytic performance with very small overpotentials(246 mV at 10 mA^(-2)and 407 mV at 200 mA cm^(-2))as well as ultralow Tafel slope(28.18 mV dec^(-1)).Combining charac-terizations and theoretical calculations,it was found that the remarkable performance was from follows:the obtained MX@MOF-Co_(2)P inherited the porous structure of the pristine MOF with a large number of open active sites;carbon and nitrogen doping also modulated the electronic structure of the active center;the synergistic effect between cobalt phosphide and MXenes booted the electronic *** work represents a promising strategy for the development of non-precious metal catalysts derived from metal-organic frameworks to achieve efficient energy conversion.

关键词： Mxene mof doping cobalt phosphide electrocatalysts

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advanced high-entropy alloys breaking the property limits of current materials

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Journal of materials science & Technology 2024年第19期186卷 219-230页

作者： Dongyue Li Peter K.Liaw Lu Xie Yong Zhang Wenrui Wang School of Mechanical Engineering University of Science and Technology BeijingBeijing 100083China Department of Materials Science and Engineering The University of TennesseeKnoxvilleTN 37996USA Beijing Advanced Innovation Center of Materials Genome Engineering State Key Laboratory for Advanced Metals and MaterialsUniversity of Science and Technology BeijingBeijing 100083China

The growing need for stronger and more ductile structural materials has spurred an intense search for innovative,high-performance ***,alloys face a pervasive trade-off:high strength often comes at the expense of ductility and vice *** advent of high-entropy alloys(HEAs)offering both high strength and ductility has transformed this *** this work,we discuss the deformation mechanisms of HEAs,examine the foundations of the strength-ductility trade-off,and explore approaches for designing HEAs to surmount this ***,we analyze the factors that govern HEA-deformation performance,which in turn influence the HEA *** also propose a perspective on future research directions concerning the mechanical behavior of HEAs,highlighting potential breakthroughs and novel strategies to advance the field.

关键词： High-entropy alloy Strength-ductility Trade-off Microstructure Deformation mechanism

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Combination of methylthio-chemistry with living crystallization-driven self-assembly toward uniformπ-conjugated nanostructures with antibacterial activity,surface tailorability,tunable morphology and dimension

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science China Chemistry 2024年第7期67卷 2341-2352页

作者： Chuyu Duan Binbin Xu Ruru Li Xiaoyu Huang Shaoliang Lin Chun Feng Shanghai Key Laboratory of Advanced Polymeric Materials School of Materials Science and EngineeringEast China University of Science and TechnologyShanghai 200237China School of Chemistry and Materials Science Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesHangzhou 310024China Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai 200032China

Living crystallization-driven self-assembly(CDSA)provides robust access to uniformπ-conjugated nanostructures(CNSs)from block copolymers(BCPs)containing a crystallineπ-conjugated segment with controlled dimension,morphology and composition,which show appealing applications in biomedicine,photocatalysis and *** further expand the application spectrum of these CNSs,the development of facile strategies toward diverse CNSs with varying structures/functionalities is highly ***,BCPs consisting of oligo(p-phenylene ethynylene)-b-poly(polypropyl-3-methanethiol acrylate)(OPE_(9)-bPMTPA35and OPE_(9)-b-PMTPA_(58);the subscript represents the number of repeat unit of each block)consisting of a crystallineπ-conjugated core-forming OPE_(9)segment and a corona-forming PMTPA block are *** efficient“click-type”alkylation of methylthio groups,OPE_(9)-b-PMTPA with varying contents of sulfonium unit is *** ribbon-like micelles with different widths and lengths can then be generated in a controlled manner via the self-seeding approach of living ***,negatively charged polymeric and Ag nanoparticles can be immobilized on sulfonium/methylthio-containing shells by taking advantage of electrostatic attraction and coordination interaction,***,the ribbon-like micelles with positively charged shells exhibit antibacterial activity against *** the ease of modification of PMTPA-based shell and attractive opto-electronic/photocatalytic properties ofπ-conjugated units,the combination of methylthio-chemistry and living CDSA opens a new avenue to generate multi-functional CNSs for widespread applications from biomedicine to photocatalysis.

关键词： crystallization-driven self-assembly block copolymer π-conjugated nanostructure methylthio-chemistry

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