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Novel titanium vanadate with superior Na^(+) transport kinetics for rapid charging and low-temperature sodium ion batteries

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Green Energy & Environment 2025年第2期10卷 374-381页

作者： Dan Lv Liehao Wei Cheng Wang Mingyue Wang Zhongchao Bai Yameng Fan Dongdong Wang Nana Wang Jian Yang Key Laboratory of Advanced Ceramics and Machining Technology(Ministry of Education) School of Materials Science and EngineeringTianjin UniversityTianjin300072China Key Laboratory of Colloid and Interface Chemistry Ministry of EducationSchool of Chemistry and Chemical EngineeringShandong UniversityJinan250100China Tianjin Key Lab of Indoor Air Environmental Quality Control School of Environmental Science and TechnologyTianjin UniversityTianjin300072China Institute for Superconducting and Electronic Materials University of WollongongWollongongAustralia Institute of Energy Materials Science(IEMS) University of Shanghai for Science and Technology516 Jungong RoadShanghai200093China

Sodium-ion batteries(SIBs)hold great promise for large-scale energy storage in the post-lithium-ion battery era due to their high rate performance and long lifespan,although their sluggish Na^(+) transformation kinetics still require *** by the excellent electrochemical performance of titanium-based anode materials,here,we present a novel titanium vanadate@carbon(TVO@C)material as anode for *** TVO@C material is synthesized via a facile coprecipitation method,with the following annealing process in an acetylene *** opened ion channel and the oxygen vacancies within TVO@C facilitate the diffusion of Na^(+) ions,reducing their diffusion ***,an ultrahigh rate of 100 A g^(-1)and long life of 10,000 cycles have been ***,the TVO@C electrode exhibits stable performance,not only at room temperature,but also at temperatures as low as 20 *** TVO@CjjNa_(3)V_(2)(PO_(4))_(3)@C full cells have also achieved stable discharge/charge for 500 *** is believed that this strategy provides new insight into the development of advanced electrodes and provides a new opportunity for constructing novel high rate electrodes.

关键词： Anode High rate Titanium vanadate Sodium ion batteries

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Non-Markovian dynamics and lateral Casimir effect in atom-plasmon coupling nanostructures

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Optics Express 2025年第9期33卷 19558-19581页

作者： Du, Peng-Tao Yin, Wu-Zhou Li, Gao-Xiang Yang, Yaping Fang, Wei Institute of Systems Science Department of Physics College of Information Science and Engineering Huaqiao University Xiamen361021 China Department of Physics Huazhong Normal University Wuhan430079 China MOE Key Laboratory of Advanced Micro-Structure Materials School of Physics Science and Engineering Tongji University Shanghai200092 China

This study proposes a nanophotonic structure that supports the generation and enhancement of the lateral Casimir-Polder (CP) force acting on atoms. By applying the two-dimensional anisotropic material, we demonstrate that both the spontaneous decay rate and the emission pattern of the atom exhibit distinct features by manipulating the parameters of the system. In particular, the exact numerical solutions of population dynamics reveal the occurrence of Rabi oscillations in the strong atom-field coupling case, where the Markovian results fail to describe this phenomenon. We also show that the asymmetric spatial distribution of the in-plane dipole radiation into surface plasmon modes is achievable for the system under consideration. Based on these intriguing properties, we predict the generation of the lateral CP force, where the transient evolution of the force indicates the periodical variation in both the direction and the amplitude under strong light-atom interaction conditions. Our findings have potential applications for novel optical nanotechnologies and devices, which provide a method for atom manipulation and trapping. © 2025 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement.

关键词： Nanorings

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Enhancing Structural Stability and Electrochemical Performance of Ultra-high Ni-rich Co-free Cathode via MgHPO_(4) Dual-functional Modification

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Chemical Research in Chinese Universities 2025年第2期41卷 333-342页

作者： LIN Huahui SHEN Yu WEI Li SONG Ran WU Fan WEI Peng YANG Zhenzhong REN Yurong QU Ke DING Zhengping Changzhou Key Laboratory of Intelligent Manufacturing and Advanced Technology for Power Battery Jiangsu Province Engineering Research Center of Intelligent Manufacturing Technology for the New Energy Vehicle Power BatterySchool of Materials Science and EngineeringChangzhou UniversityChangzhou 213164P.R.China Key Laboratory of Polar Materials and Devices(MOE) Shanghai Center of Brain-inspired Intelligent Materials and DevicesDepartment of ElectronicsEast China Normal UniversityShanghai 200241P.R.China

Ultra-high nickel layered cathodes(Ni≥95%)have emerged as prospective candidates for next-generation lithium-ion batteries(LIBs)due to their exceptional specific capacity and ***,the commercial application of these cathodes has been hindered by several challenges,including structural instability during cycling,high sensitivity to air,and slow Li+*** this research,a one-step modification strategy was developed to simultaneously achieve Mg doping and Li_(3)PO_(4)layer coating for the ultra-high nickel *** results demonstrated that Mg doping not only alleviates lattice strain changes during the H2–H3 phase transition(H2:the second hexagonal phase;H3:the third hexagonal phase)but also serves as a structural anchor,preventing Ni^(2+)migration and occupation within the Li *** Li_(3)PO_(4)surface coating layer acts as an electrochemical shield,protecting against interfacial side reactions and enhancing the Li+diffusion *** a result,the LiNi_(0.95)Mn_(0.05)O_(2) cathode,with both internal and external modifications,demonstrates significant improvement in cycling stability(85.7%capacity retention after 100 cycles)and Li^(+)transport performance(130.6 mA·h·g^(−1) at 10 C,1 C=189.6 mA·h·g^(−1)),providing a solid foundation for the further development and application of ultra-high nickel cathodes.

关键词： Lithium-ion battery Ni-rich Co-free cathode MgHPO_(4) Surface modification

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The d-p orbital hybridization engineered RhPb bimetallene for efficient ethanol electrooxidation

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science China Chemistry 2025年第5期 1897-1905页

作者： Bo-Qiang Miao Zi-Han Yuan Qing-Ling Hong Xuan Ai Fu-Min Li Pei Chen Pu-Jun Jin Yu Chen Key Laboratory of Macromolecular Science of Shaanxi Province Shaanxi Key Laboratory for Advanced Energy DevicesSchool of Materials Science and EngineeringShaanxi Normal University MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter School of PhysicsXi'an Jiaotong University

The construction of bimetallic sites with strong interaction can effectively regulate the electronic structure and modulate the adsorption behavior of adsorbate species on bimetallic catalysts, thereby overcoming catalytic bottlenecks. Herein, an RhPb bimetallene(RhPb b-ML) with the strong d-p orbital hybridization is proposed for efficiently catalyzing ethanol oxidation reaction(EOR). Notably, the specific EOR activity of RhPb b-ML is 32 and 6.8 times higher than those of Rh metallene and commercial Pt/C, respectively. Theoretical calculation analysis reveals that the introduction of Pb atoms into the Rh lattice leads to an upward shift of the d-band center of Rh on RhPb(111). The shift in the d-band center is primarily attributed to the different degrees of hybridization between the d sub-orbitals of Rh and the p-orbitals of Pb, which enhance the adsorption of key species and improve EOR activity and selectivity. In-situ infrared tests and high-performance liquid chromatography tests together confirm that RhPb b-ML not only exhibits enhanced ability for the breakage of C–C bonds but also effectively suppresses the generation of absorbed CO. Furthermore, the strategy of enhancing catalyst performance through the strong d-p orbital hybridization has been demonstrated to be scalable to other bimetallic catalysts, providing valuable insights for the design of advanced catalysts.

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Equilibrium and non-equilibrium preparation of Zr-based oxide ceramic layers via in-situ synthesis on ZrNb alloy surfaces

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Ceramics International 2025年第12期51卷 15483-15496页

作者： Liu, Shuguang Song, Tianshuo Xue, Yongjie Qiu, Weiwei Zhao, Suli Li, Xuexian Wang, Fei Yue, Yun Xia, Chaoqun Engineering Research Center for Electrophysical Apparatus and Application Technology Beijing Research Institute of Automation for Machinery Industry Co. Ltd. Beijing100120 China Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology School of Materials Science and Engineering Hebei University of Technology Tianjin 300130 China National United Engineering Laboratory for Advanced Bearing Tribology Henan University of Science and Technology Luoyang471000 China

To develop ZrNb alloys with excellent surface properties, phase composition, microstructure evolution, and friction and wear properties of Zr oxide ceramic layers prepared by equilibrium and non-equilibrium techniques were investigated. Non-oxidized samples prepared with same heat treatment process were used as control group. Optical microscopy, scanning electron microscopy, X-ray diffraction, and X-photoelectron spectroscopy were employed to further investigate and establish relationships between processing, structure, and properties. There was apparent oxygen-rich diffusion zone between in-situ synthesized Zr-based oxide ceramic layer and ZrNb substrate. High residual stress, fine-grained microstructure due to insufficient growth, and high diffusion rate of elements near oxide/metal interface at 1000 °C resulted in high content of t-ZrO2 in non-equilibrium aqueous oxidation sample. Furthermore, the composition of equilibrium thermal oxidation samples was dominated by m-ZrO2, exhibiting the highest nano-hardness (>14 GPa) and the lowest wear rate (3.40 × 10−8 mm3/N·m). Friction and wear behavior of samples under different surface conditions was investigated. Lastly, stability mechanism of metastable oxide phases and growth mechanism of Zr-based oxides were analyzed and discussed in depth. © 2025 Elsevier Ltd and Techna Group S.r.l.

关键词： Thermooxidation

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In-phase collective unconventional photon blockade and its stability in an asymmetrical cavity containing N bosonic atoms

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Chinese Physics B 2025年第1期34卷 331-336页

作者： Ying Luo Xinqin Zhang Yi Xiao Jingping Xu Haozhen Li Yaping Yang Xiuwen Xia School of Physics and Electronic Information Gannan Normal UniversityGanzhou 341000China Institute of Atomic and Molecular Physics and Functional Materials School of Mathematics and PhysicsJinggangshan UniversityJi’an 343009China MOE Key Laboratory of Advanced Micro-Structure Materials School of Physics Science and EngineeringTongji UniversityShanghai 200092China College of Communication Engineering Hangzhou Dianzi UniversityHangzhou 310018China Zhejiang Province Key Laboratory of Quantum Technology and Device Zhejiang UniversityHangzhou 310027China

We present work on a cavity-driven QED system combining an asymmetrical Fabry–Perot cavity and N two-level atoms(TLAs)and show the convenience of simplifying from distinguishable atoms to undistinguishable bosons when the atoms are prepared in the same initial *** simplification is valid even when the atoms are not prepared in the inphase condition,since any partial in-phase initial state will evolve into the ground state through a relaxation ***,we get a reduced group of differential equations by introducing the Dicke states,and the under-zero Lyapunov exponents verify its *** also work out the collective unconventional photon blockade(UCPB)and get two kinds of giant nonreciprocal UCPBs(NUCPBs)in the weak-driving *** show that we can employ N noninteracting bosonic atoms to generate a collective UCPB instead of a monoatomic UCPB as the UCPB conditions do not vary with the number of ***,the forward giant NUCPB only occurring for N larger than a certain number as well as the backward giant NUCPB are controllable by the cavity asymmetry and by the number of *** findings suggest a prospective approach to the generation of quantum nonreciprocity by N identical atoms.

关键词： unconventional photon blockade quantum nonreciprocity asymmetrical cavity

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Cocktail Effects in Boosting the Interfacial Ionic Conduction of the Garnet Solid-State Battery

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ACS Applied materials and interfaces 2025年第19期17卷 28103-28114页

作者： Wang, Zhipeng Peng, Jiaoli Duan, Renjie Gong, Wei Song, Hongquan Yu, Mingpeng Center for Green Innovation Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science School of Mathematics and Physics University of Science and Technology Beijing Beijing100083 China Beijing Advanced Innovation Center for Materials Genome Engineering Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science School of Mathematics and Physics University of Science and Technology Beijing Beijing100083 China Faculty of Engineering Shinshu University 4-17-1 Wakasato Nagano-shi380-8553 Japan College of Physics and Telecommunication Engineering Zhoukou Normal University Zhoukou466001 China

The garnet-type Li7La3Zr2O12 electrolyte has gained a lot of attention due to its nonflammability, high ionic conductivity, and thermodynamic stability against lithium anodes. However, the large-scale application of solid garnet electrolytes is restricted by high interfacial resistance due to the poor wettability of metallic lithium and interfacial voids caused by sluggish lithium-ion transport during plating/stripping. Herein, we propose a three-dimensional (3D) composite lithium anode with high ionic and electronic conductivity by introducing a small amount of carbonized ZIF-8 powder into molten lithium, achieving compact contact with remarkably low interfacial resistance of 15.2 Ω cm2 due to the decreased surface tension of molten lithium. Aided by DFT calculations, we are able to confirm that the reaction products of Li3N, Li2O, Li−Zn alloy, and LiC6 have much lower interfacial formation energies with garnet electrolytes compared to that of the pure lithium anode. The lithiophobic Li3N and Li2O could impede lithium dendrite growth, provide rapid ionic transport, and thus prevent garnet reduction. In addition, the lithiophilic Li−Zn alloy and LiC6 accelerate lithium-ion migration, preventing the formation of voids at the interface. Thus, the so-called cocktail effects would occur to boost the electrochemical performance through synergistic interactions. The symmetric battery enabled with the composite lithium anode achieves an impressive CCD of 2.5 mA cm−2 and stable galvanostatic cycling for 350 h without short-circuiting at 0.5 mA cm−2. Moreover, the full cell paired with the LiFePO4 cathode delivers excellent cycling performance (LiFePO4, 86.2%@160th cycle@0.5 C). This article describes an integrated approach to develop safe and long-lasting solid-state batteries. © 2025 American Chemical Society.

关键词： Lithium-ion batteries

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One-step solvothermal preparation of Fe-doped Ni_(0.85)Se/NF:An efficient catalyst for the oxygen evolution reaction

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ChemPhysMater 2025年第1期4卷 78-85页

作者： Longqi Zhu Runze Wang Chen Wang Shuhan Yang Haizhen Liu Bo Xing Honghui Cheng Kuikui Wang Institute of Materials for Energy and Environment Laboratory of New Fiber Materials and Modern TextileGrowing Basis for State Key LaboratoryCollege of Materials Science and EngineeringQingdao UniversityQingdao 266071China MOE Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured MaterialsGuangxi UniversityNanning 530004China National Engineering Laboratory of Circular Economy Sichuan University of Science and EngineeringZigong 643000China School of Mechanical Engineering Yangzhou UniversityYangzhou 225127China Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology Changzhou UniversityChangzhou 213164China

Metal-cation doping is a fundamental strategy for enhancing catalyst ***-doped Ni_(0.85)Se/NF(Fe-Ni_(0.85)Se/NF)nanoparticles were prepared at 80°C via Fe^(2+)etching *** addition of Fe altered the coordination environment of the Ni species along with the catalyst's morphology,creating additional active ***,the synergistic interaction between the bimetallic components augmented the built-in activity and accelerated reaction *** Fe-Ni_(0.85)Se/NF electrocatalysts demonstrated remarkable catalytic activity for the oxygen evolution reaction(OER),with an acceptable overpotential of 276 mV and a Tafel slope of 58.1 mV dec^(−1)at 100 mA cm^(−2).Moreover,they demonstrated exceptional *** situ Raman and X-ray photoelectron spectroscopy(XPS)analyses showed that the excellent OER performance stemmed from the reconstruction-induced hydroxyl *** study offers a novel approach for streamlining the synthesis procedures and reducing the experimental costs for developing high-efficiency electrocatalysts.

关键词： Doping Selenylation Hydrothermal reaction Oxygen evolution reaction Electrocatalysts

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Effect of GaInP and GaAsP inserted into waveguide/barrier interface on carrier leakage in InAlGaAs quantum well 808-nm laser diode

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中国光学(中英文) 2025年第1期18卷 186-197页

作者： FU Meng-jie DONG Hai-liang JIA Zhi-gang JIA Wei LIANG Jian XU Bing-she Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of EducationTaiyuan University of TechnologyTaiyuan 030024China Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering Taiyuan 030024China College of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan 030024China Institute of Atomic and Molecular Science Shaanxi University of Science&TechnologyXi’an 710021China

There is nonradiative recombination in waveguide region owing to severe carrier leakage,which in turn reduces output power and wall-plug *** this paper,we designed a novel epitaxial structure,which suppresses carrier leakage by inserting n-Ga_(0.55)In_(0.45)P and p-GaAs_(0.6)P_(0.4) between barriers and waveguide layers,respectively,to modulate the energy band structure and to increase the height of *** results show that the leakage current density reduces by 87.71%,compared to traditional *** nonradiative recombination current density of novel structure reduces to 37.411 A/cm^(2),and the output power reaches 12.80 W with wall-plug efficiency of 78.24%at an injection current density 5 A/cm^(2) at room *** addition,the temperature drift coefficient of center wavelength is 0.206 nm/℃at the temperature range from 5℃to 65℃,and the slope of fitted straight line of threshold current with temperature variation is *** novel epitaxial structure provides a theoretical basis for achieving high-power laser diode.

关键词： 808-nm laser diode Ga_(0.55)In_(0.45)P and GaAs_(0.6)P_(0.4)insertion layers InAlGaAs quantum well carrier leakage

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High-order multilayer-coated blazed grating for a high-transmission and high-resolution tender X-ray monochromator/spectrometer

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Photonics Research 2025年第2期13卷 340-350页

作者： YEQI ZHUANG QIUSHI HUANG ANDREY SOKOLOV STEPHANIE LEMKE ZHENGKUN LIU YUE YU IGOR V.KOZHEVNIKOV RUNZE QI ZHE ZHANG ZHONG ZHANG JENS VIEFHAUS ZHANSHAN WANG Key Laboratory of Advanced Micro-Structured Materials MOE Institute of Precision Optical EngineeringSchool of Physics Science and EngineeringTongji University Helmholtz-Zentrum Berlin für Materialien und Energie National Synchrotron Radiation Laboratory University of Science and Technology of China

Grating optics lie in the heart of X-ray spectroscopy instruments. The low efficiency and angular dispersion of conventional single-layer-coated gratings significantly limit the transmission and energy resolution of monochromators and spectrometers, particularly in the tender X-ray region(E = 1-5 keV). Multilayer-coated blazed gratings(MLBGs) operating at high diffraction orders offer the advantage of achieving both high efficiency and high dispersion simultaneously. Tender X-ray monochromators and spectrometers using different high-order MLBGs have been designed, all demonstrating one to two orders of magnitude higher transmission compared to conventional systems. By employing a 2400 l/mm MLBG at the-4th or-8th diffraction order, the theoretical energy resolution of the instrument is improved by two to three times at 2.5 keV. Two MLBGs operating at the-2nd and-4th orders have been fabricated, showcasing remarkable efficiencies of 34%–12% at 2.5 keV, surpassing that of single-layer-coated gratings by an order of magnitude. Further optimization of manufacturing accuracy can yield even higher efficiencies. The measured angular dispersion agrees well with theoretical predictions, supporting the potential for high resolution. High-order MLBG optics pave the way for a new generation of tender X-ray monochromators/spectrometers that offer both high transmission and high resolution. ? 2025 Chinese Laser Press

关键词： Diffraction efficiency Diffraction gratings Free electron lasers Light sources Photon counting X-ray spectroscopy

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