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Nano Research 2025年第1期18卷 315-322页

作者： Kun-Peng Yang Song Xie Zi-Meng Han Hao-Cheng Liu Chong-Han Yin Wen-Bin Sun Zhang-Chi Ling Huai-Bin Yang De-Han Li Qing-Fang Guan Shu-Hong Yu Department of chemistry New Cornerstone Science LaboratoryInstitute of Biomimetic Materials&ChemistryAnhui Engineering Laboratory of Biomimetic MaterialsDivision of Nanomaterials&ChemistryHefei National Research Center for Physical Sciences at the MicroscaleUniversity of Science and Technology of ChinaHefei 230026China Institute of Innovative materials Department of Materials Science and EngineeringDepartment of ChemistrySouthern University of Science and TechnologyShenzhen 518055China

Separators play a critical role in lithium-ion ***,the restrictions of thermal stability and inferior electrical performance in commercial polyolefin separators significantly limit their applications under harsh ***,we report a cellulose-assisted self-assembly strategy to construct a cellulose-based separator massively and *** an ultrahigh ionic conductivity in electrolytes of 3.7 mS·cm^(-1) and the ability to regulate ion transport,the obtained separator is a promising alternative for high-performance lithium-ion *** addition,integrated with high thermal stability,the cellulose-based separator endows batteries with high safety at high temperatures,greatly expanding the application scenarios of energy storage devices in extreme environments.

关键词： lithium-ion batteries bio-inspired materials battery separators cellulose nanofiber ultrahigh ionic conductivity high safety

Structural and optical studies of Yb^(3+),Er^(3+) and Er^(3+)/Yb^(3+) co-doped phosphate glasses

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Journal of Rare Earths 2013年第7期31卷 685-693页

作者： S.Hraiech M.Ferid Y.Guyot G.Boulon physical chemistry laboratory of mineral materials and their applications National Center of Research in Materials ScienceTechnologic Park of Borj Cedria B.P.738020 SolimanTunisia physical chemistry of Luminescent materials(LPCML) University of LyonClaude Bernard/Lyon 1 UniversityUMR 5620 CNRSLa Doua69622 VilleurbanneFrance

Phosphate glass samples with various Yb2O3 and Er2O3 contents were synthesized by the conventional melt quenching technique and characterized by X-ray diffraction, IR absorption spectroscopy and Raman scattering spectroscopy. The absorption, emission spectra and fluorescence decay studies were carried out both at low and room temperatures. Results showed the existence of several sites occupied by the rare earth ions in the phosphate glass. Up-conversion and cooperative fluorescence were also discussed.

关键词： Yb3+/Er3+ co-doped phosphate glass energy transfer upconversion co-operative fluorescence rare earths

Preparation and applications of calcium ferrite as a functional material:A review

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International Journal of minerals,Metallurgy and materials 2025年第2期32卷 292-310页

作者： Xiuli Han Bowen Duan Lei Liu Shilong Fang Weiwei Wang College of Mining Engineering North China University of Science and TechnologyTangshan 063210China Collaborative Innovation Center of Green Development and Ecological Restoration of mineral Resources of Hebei Province Tangshan 063210China Key laboratory of Mining Development and Security Technology of Hebei Province Tangshan 063210China

Calcium ferrite(CF)is recognized as a potential green and efficient functional material because of its advantages of magnetism,electrochemistry,catalysis,and biocompatibility in the fields of materials chemistry,environmental engineering,and ***-fore,the obtained research results need to be systematically summarized,and new perspectives on CF and its composite materials need to be *** on the presented studies of CF and its composite materials,the types and structures of the crystal are *** addition,the current application technologies and theoretical mechanisms with various properties in different fields are ***,the various preparation methods of CF and its composite materials are elaborated in *** importantly,the advantages and disadvantages of the synthesis methods of CF and its composite materials are discussed,and the existing problems and emerging challenges in practical production are ***,the key future research directions of CF and its composite materials have been prospected from the potential application technologies to provide references for its synthesis and efficient utilization.

关键词： calcium ferrite mineral functional materials preparation application perspectives

Crystal　Structure　and　Specific　Rotation　of　a　Tetrakis－HistidineOcto－Aquo　Di－Erbium　Perchlorate　Complex

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Journal of Rare Earths 1996年第2期14卷 94-97页

作者：杨维春陈德福金天柱章士伟 State Key laboratory of Rare Earth materials chemistry and applications Peking University Beijing 100871 China Institute of physical chemistry Peking University Beijing 100871 China

The title complex [Er_2 (His·H￣+)_4 (H_2O)_8] (ClO_4)_(10)·4H_2O was synthesized in aqueous solution and its crystal structure was determined by X ray diffraction method. The crystal is triclinic, space group P1 with a=1.1726(2) nm, b=1.2660(3) nm, c=1.3142(3) nm, a=82. 92(3)°,β=70. 86(3)°, γ=83.06(3)°, V=1. 8223(7) nm￣3, Z=1, Dc=1.977g/cm￣3. The complex was a binuclear molecule, and each erbium ion is coordinated by four carboxylic oxygen atoms from four histidine and four oxygen atoms from H_2O, forming a coordination polyhedron of square antiprism. The structure analysis and specific rotation determination shows that the crystal contains enantiomers.

关键词： Erbium complex Crystal structure Histidine

Effect of different metal ions in a new kind of functionalized self-assembled films of trinary complexes on its photoinduced electron transfer property

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Science China chemistry 2000年第6期43卷 609-616页

作者：韦天新黄春辉于小丰吴念祖 State Key laboratory of Rare Earth materials chemistry and applications PKU-HKU Joint Laboratory on Rare Earth Materials and Bioinorganic Chemistry Peking University Beijing 100871 China Institute of physical chemistry College of Chemistry Peking University Beijing 100871 China

Three new kinds of self-assembled films were first fabricated through a new strategy. These films have Sn4+, Zr4+ and Ce4+ as bridging central ions, 3, 4, 9, 10-perylene tetracarboxylic acid (PTA) as functional molecules and oxalic acid as connecting ligand. All films were characterized by contact angle, UV spectra, X-ray photoelectron spectra (XPS) and cyclic voltammetry. The effects of light intensity, bias voltage, and electron donor on photocurrents of these films were also studied.

关键词： 3,4,9,10-peiylene tetracarboxylic add self-assembled films photoinduced electron transfer trinary complex

Enhancement of Er^(3+) Luminescence in LiNbO_(3):Mg Crystals

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Chinese Physics Letters 2001年第9期18卷 1205-1207页

作者： ZHAO Li-Juan YANG Jian XU Jing-Jun HUANG Hui ZHANG Guang-Yin Photonics Research Center College of Physical ScienceNankai UniversityTianjin 300071 State Key laboratory of Rare Earth materials chemistry and applications Beijing UniversityBeijing 100871

The luminescent properties of Er^(3+) ions in LiNbO_(3):Er and LiNbO_(3):Mg, Er crystals at room temperature have been investigated by the emission spectra and the selective excitation spectra. The energy transition processes of Er3+ luminescence have been analysed. It has been found that the luminescent intensity of Er^(3+) ions in the LiNbO_(3):Mg, Er crystal increased up to 7.8 times compared with that in the LiNbO_(3):Er crystal. The decrease of the defect centre (NbLi) concentration due to doping with Mg^(2+) ions plays a key role in this phenomenon.

关键词： spectra crystal luminescent

The chemistry and physics of organic-inorganic hybrid perovskite quantum wells

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Science China chemistry 2022年第11期65卷 2058-2076页

作者： Yongping Fu Beijing National laboratory for Molecular Science State Key Laboratory of Rare Earth Materials Chemistry and ApplicationsCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China

Organic-inorganic hybrid two dimensional(2D)lead halide perovskites(LHPs)are tunable quantum wells that exhibit a set of intriguing structural and physical properties including soft and dynamic lattices,organic-inorganic epitaxial heterointerfaces,quantum and dielectric confinements,strong light-matter interactions,and large spin-orbit coupling,which enable promising perspectives for optoelectronics,ferroelectrics,and *** the properties of 2D LHPs bear some resemblance of the3D LHPs,they are often drastically altered due to the reduced dimensionality and the complex interactions between organic and inorganic *** this review,we discuss the influences of the reduced dimensionality and the organic-inorganic interplays on the structural stability and distortion of the inorganic lattices,inversion symmetry of the crystal structure,electronic band structures,excitonic physics,and carrier-phonon interactions in 2D *** emphasis is placed on the relationships between the crystal structures and photophysical *** perspectives on the opportunities of hybrid quantum wells are provided.

关键词： hybrid quantum wells halide perovskites 2D organic-inorganic interplay inversion symmetry exciton carrier-phonon interaction

Defect engineering: A versatile tool for tuning the activation of key molecules in photocatalytic reactions

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Journal of Energy chemistry 2019年第10期28卷 43-57页

作者： Ning Zhang Chao Gao Yujie Xiong Hefei National laboratory for physical Sciences at the Microscale iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) and School of Chemistry and Materials Science University of Science and Technology of China

Many photocatalytic reactions such as CO2 reduction and N2 fixation are often limited by the activation of some key molecules. Defects in solid materials can robustly introduce coordinately unsaturated sites to serve as highly active sites for molecular chemisorption and activation. As a result, rational defect engineering has endowed a versatile approach to further develop photocatalytic applications beyond water splitting. The subtly designed defects in photocatalysts can play critical and decisive roles in molecular activation as proven in recent years. The defects cannot only serve as active sites for molecular chemisorption, but also spatially supply channels for energy and electron transfer. In this review, we aim to summarize the diversiform photocatalytic applications using defects as active sites, including but not limited to CO2 reduction, O2 activation,H2O dissociation, N2 fixation as well as activation of other molecules. In particular, we emphatically outline how the parameters of defects (e.g.,concentration,location,geometric and electronic structures) can serve as the knobs for maneuvering molecular adsorption and activation as well as altering subsequent reaction pathway. Moreover, we underline the remaining challenges at the current stage and the potential development in the *** is anticipated that this review consolidates the in-depth understanding towards the structure-activity relationship between defects and related reactions.

关键词： Defect engineering Photocatalysis Molecular adsorption Molecular activation Electron transfer

Preparation of ceria with large particle size and high appearance density

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Journal of Rare Earths 2008年第1期26卷 127-130页

作者：王嵩龄刘钧云贾江涛廖春生严纯华 State Key laboratory of Rare Earth materials chemistry and applications Peking University Jiangxi Mingda Functional materials Co. Ltd.

Cerium is one of the most abundant rare earth elements in both bastnasite and monazite. Ceria has been widely used in optical, catalytic, electrolyte, and sensor materials, with unique performances. With the development of functional materials, great interest has been focused on the synthesis and characterization of specific fine/mesoporous ceria powder. In this study, the modified precipitation and recrystallization processes combined with a controlled calcination process for fabricating the ceria with large particle size and high appearance density was reported. During precipitation, a certain amount of mineral acid such as nitric acid served as an additive, to adjust the precipitation and crystallization processes of cerium oxalates. An appropriate acidic condition could lead the process into the Oswald ripening stage and made the particles become bigger. Thus, the appearance density of powder was increased. The optimized conditions, such as the temperature, feeding speed, type and concentration of mineral acids, and the concentration of cerium-contained stock solution, were investigated and evaluated.

关键词： particle size appearance density cerium oxide preparation rare earths

Carbon nanotube-based electrodes for flexible supercapacitors

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Nano Research 2020年第7期13卷 1825-1841页

作者： Sheng Zhu Jiangfeng Ni Yan Li Beijing National laboratory far Molecular Sciences Key Laboratory for the Physics and Chemistry of NanodevicesState Key Laboratory of Rare Earth Materials Chemistry and ApplicationsCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China School of physical Science and Technology Center far Energy Conversion Materials&Physics(CECMP)Jiangsu Key Laboratory of Thin FilmsSoochow UniversitySuzhou 215006China

Flexible supercapacitors(SCs)have attracted increasing attention as the power supply unit for portable/wearable *** nanotubes(CNTs)are promising candidate materials for flexible SC electrodes because of their outstanding mechanical property,high electrical conductity,large surface area,and *** can assemble into various macroscopic materials with different *** this review,flexible CNT assemblies including 1D fibers,2D films,and 3D aerogels and sponges are introduced with a focus on the design strategies and fabrication *** recent developments and state-of-the-art applications of such structures as electrodes in flexible SCs are summarized based on device configurations including sandwiched,interdigital in-plane,and cable-type *** flexible CNT-based electrodes have shown great advantages in bendability,stretchability and/or compresisbility,as well as a long cycle *** current challenges and future research opportunities in this field are also discussed.

关键词： carbon nanotubes nanostructures electrodes flexible supercapacitors