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Constructing Donor–Acceptor‑Linked COFs Electrolytes to Regulate Electron Density and Accelerate the Li^(+)Migration in Quasi‑Solid‑State Battery

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nano-Micro Letters 2025年第1期17卷 456-471页

作者： Genfu Zhao Hang Ma Conghui Zhang Yongxin Yang Shuyuan Yu Haiye Zhu Yongjiang Sun Hong Guo School of materials and Energy International Joint Research Center for Advanced Energy Materials of Yunnan ProvinceYunnan UniversityKunming 650091People’s Republic of China Yunnan Yuntianhua Co. LtdR&D CenterKunming 650228People’s Republic of China Southwest United Graduate School Kunming 650091People’s Republic of China

Regulation the electronic density of solid-state electrolyte by donor–acceptor(D–A)system can achieve highly-selective Li^(+)transportation and conduction in solid-state Li metal *** study reports a high-performance solid-state electrolyte thorough D–A-linked covalent organic frameworks(COFs)based on intramolecular charge transfer *** other reported COFbased solid-state electrolyte,the developed concept with D–A-linked COFs not only achieves electronic modulation to promote highly-selective Li^(+)migration and inhibit Li dendrite,but also offers a crucial opportunity to understand the role of electronic density in solid-state Li metal *** introduced strong electronegativity F-based ligand in COF electrolyte results in highlyselective Li^(+)(transference number 0.83),high ionic conductivity(6.7×10^(-4)S cm^(−1)),excellent cyclic ability(1000 h)in Li metal symmetric cell and high-capacity retention in Li/LiFePO_(4)cell(90.8%for 300 cycles at 5C)than substituted C-and N-based *** is ascribed to outstanding D–A interaction between donor porphyrin and acceptor F atoms,which effectively expedites electron transferring from porphyrin to F-based ligand and enhances Li^(+)***,we anticipate that this work creates insight into the strategy for accelerating Li^(+)conduction in high-performance solid-state Li metal batteries through D–A system.

关键词： electronic modulation engineering Donor-acceptor-linked covalent organic frameworks Quasi-solid-state Li metal battery

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Synthesis of porous carbon spheres derived from lignin through a facile method for high performance supercapacitors

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Journal of materials Science & Technology 2018年第11期34卷 2189-2196页

作者： Yuemei Chen Guoxiong Zhang Jingyuan Zhang Haibo Guo Xin Feng Yigang Chen Department of electronic Information materials School of Materials Science and EngineeringShanghai University nano-Science & Technology research center Shanghai University

Porous carbon spheres（PCS） derived from lignin have been prepared through a facile method and fabricated as electrodes for electric double-layer capacitors. Spherical shaped mixtures of lignosulfonate and crystalized KOH are formed by spray drying of a solution of lignosulfonate and KOH. Activation by KOH is performed at high temperatures along with lignosulfonate carbonization. With an appropriate pore structure, the obtained PCS have a specific surface area of 1372.87 m^2 g^-1 and show a capacitance of 340 F g^-1 in 3 M KOH at a current density of 0.5 A g^-1. Moreover, a symmetric supercapacitor fabricated using the PCS as electrodes show a maximum capacitance of 68.5 F g^-1, and an energy density of 9.7 W h kg^-1 at a power density of 250 W kg^-1. The capacity retention is more than 94.5% after 5000 galvanostatic chargedischarge cycles. The excellent characteristics seem to be ascribed to the pore structures of PCS that have a large specific surface area and a low electrical resistance.

关键词： Porous carbon spheres Supercapacitors Spray drying KOH activation

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Effect of growth time on morphology and photovoltaic properties of ZnO nanowire array films

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Rare Metals 2011年第6期30卷 676-680页

作者： YANG Weiguang WANG Yali ZHEN Qiang SHI Weimin Department of electronic Information materials School of Materials Science and Engineering Shanghai University Shanghai 200072 China nano-Science and nano-Technology research center School of Materials Science and Engineering Shanghai University Shanghai 200444 China

Single-crystalline ZnO nanowire arrays with different aspect ratios and nanowire densities were prepared by the hydrothermal growing method using polyethyleneimine （PEI） as a surfactant. PEI can only hinder the lateral growth of the ZnO nanowires, which is observed by high resolution transmission electron microscopy （HRTEM） analysis. Dye-sensitized solar cells were assembled by the ZnO nanowire arrays with different thicknesses, which can be controlled by the growing time and characterized using photocurrent-voltage measurements. Their photocurrent densities and energy allover conversion efficiencies increased with increasing ZnO nanowire lengths. Short-circuit current density of 4.31 ***-2 and allover energy conversion efficiency of 0.87% were achieved with 12.9-μm-long ZnO nanowire arrays.

关键词： inorganic non-metal materials ZnO nanowires hydrothermal growth morphology

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Synthesis of Single-Crystalline Anatase TiO_2 nanorods With High-Performance Dye-Sensitized Solar Cells

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Journal of materials Science & Technology 2015年第1期31卷 106-109页

作者： Jin Liu Jun Luo Weiguang Yang Yali Wang Linyan Zhu Yueyang Xu Ying Tang Yajing Hu Chen Wang Yigang Chen Weimin Shi Department of electronic Information materials School of Materials Science and Engineering Shanghai University Shanxi Lu'An Photovoltaics Technology Co. Ltd. nano-Science and nano-Technology research center Shanghai University

Single-crystalline anatase TiO2nanorods have been prepared by solvothermal method using tetrabutylammonium hydroxide（TBAH） as a morphology controlling *** obtained TiO2nanorods are dominated by a large percentage of {010} *** power conversion efficiency of dye-sensitized solar cell（DSSC） based on anatase TiO2nanorods（8.66%） exhibits a significant improvement（35%） compared to that of P25 TiO2（5.66%）.The high performance of the anatase TiO2nanorods solar cell is ascribed to their large percent of exposed {010} facets as well as balancing their surface areas and sizes.

关键词： TiO2nanorods Facet Dye-sensitized solar cell Anata

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The Influences of Controlling Sintering Mechanism on Electrical Properties of Multilayer PTCR Chip

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Journal of Wuhan University of Technology(materials Science) 2015年第4期30卷 674-678页

作者：黄汉华陈勇李璋 YANG Huai YANG Zhao GUO Jiacheng YANG Yan Faculty of Physics and electronic Technology Hubei University Engineering research center of nano-Geo materials of Ministry of Education China University of Geosciences

Experiments were designed to investigate the influence of controlling sintering mechanism on electrical properties of multilayer PTCR chip. During the preparation process, heating rate, sintering temperature, high-temperature holding time and cooling method were respectively regulated to prepare multilayer PTCR chip with good performance. After the process of organic casting, the casting PTCR green films were sintered at 1 260-1 280 ~C for 0.5 h at reduction atmosphere, which was heated at the rate of 400 ℃/h. Then selecting 300 ℃/h as the cooling rate, the ceramics were oxidated at 850 ℃ for 1 h. The prepared multilayer PTCR chips exhibited room temperature resistivity of below 100 Ω.cm, and resistance rising rate more than 104 unit through the Curie temperature.

关键词： PTCR sintering mechanism multilayer BaTiO3

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Amorphous BaTiO_(3) Electron Transport Layer for Thermal Equilibrium-Governed γ-CsPbl_(3) Perovskite Solar Cell with High Power Conversion Efficiency of 19.96%

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Energy & Environmental materials 2024年第3期7卷 291-302页

作者： Changhyun Lee Chanyong Lee Kyungjin Chae Taemin Kim Seaeun Park Yohan Ko Yongseok Jun Department of Energy Environment Policy and Technology Graduate School of Energy and Environment(KU-KIST Green School)Korea UniversitySeoul 02841Republic of Korea nano electronic materials and components research center Gumi Electronics and Information Technology Research Institute(GERI)Gumi 39171Republic of Korea Energy materials research center Clean Energy Research DivisionKorea Institute of Science and Technology(KIST)Seoul 02792Republic of Korea

Compared to organic-inorganic hybrid perovskites,the cesium-based allinorganic lead halide perovskite(CsPbI_(3))is a promising light absorber for perovskite solar cells owing to its higher resistance to thermal ***,additional research is required to reduce the nonradiative recombination to realize the full potential of CsPbI_(3).Here,the diffusion of Cs ions participating in ion exchange is proposed to be an important factor responsible for the bulk defects inγ-CsPbI_(3)*** based on first-principles density functional theory reveal that the[PbI_(6)]^(4-)octahedral tilt modifies the perovskite crystallographic properties inγ-CsPbI_(3),leading to alterations in its bandgap and crystal *** addition,by substituting amorphous barium titanium oxide(a-BaTiO_(3))for TiO_(2)as the electron transport layer,interfacial defects caused by imperfect energy levels between the electron transport layer and perovskite are ***-resolution transmission electron microscopy and electron energy loss spectroscopy demonstrate that a-BaTiO_(3)forms entirely as a single phase,as opposed to Ba-doped TiO_(2)hybrid nanoclusters or separate domains of TiO_(2)and BaTiO_(3)***,inorganic perovskite solar cells based on the a-BaTiO_(3)electron transport layer achieved a power conversion efficiency of 19.96%.

关键词： amorphous BaTiO_(3) electron transport layer moisture γ-CsPbI_(3)

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Recent development of E-field control of interfacial magnetism in multiferroic heterostructures

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nano research 2023年第4期16卷 5983-6000页

作者： Yuxin Cheng Shishun Zhao Ziyao Zhou Ming Liu The electronic materials research Laboratory Key Laboratory of the Ministry of Education&International Center for Dielectric ResearchSchool of Electronic Science and EngineeringState Key Laboratory for Mechanical Behavior of Materialsthe International Joint Laboratory for Micro/Nano Manufacturing and Measurement TechnologyXi'an Jiaotong UniversityXi'an 710049China

The full E-field control of multiferroic interfacial magnetism is a long-standing challenge for micro-electromechanical systems(MEMS)and has the potential to transform electronics operation *** scaling down conventional complementary metal-oxide semiconductor(CMOS)devices,increased heating dissipation becomes a top *** the highly correlated ferroic orders,notably the strongly coupled interfacial magnetoelectric(ME)interactions,may lead to devices beyond *** devices use the electric field to regulate magnetization,which opens up the prospect of downsizing,improved performance,and lower power *** broadly survey this tremendous scope within the last five years,this review summarizes advances in voltage control of interfacial magnetism(VCIM)with various material system selection;controlling effects with different gating methods are also *** classic mechanisms are demonstrated:strain,exchange bias,orbital reconstruction,and the electrostatic and *** encouraging photovoltaic approach is also *** method’s capabilities and application scenarios are *** of the comprehensive gating results of different magnetic coupling effects such as perpendicular magnetic anisotropy(PMA)and Ruderman-Kittel-Kasuya-Yosida(RKKY)are additionally *** last,controlling of skyrmions and two-dimensional(2D)material magnetization is summarized,indicating that E-field gating offers a universal approach with few limitations for material *** results point to potential for E-field control interfacial magnetism and predict significant future advancements for spintronics.

关键词： multiferroic magnetoelectric coupling strain charge photovoltaic

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An Efficient Boron Source Activation Strategy for the Low‑Temperature Synthesis of Boron Nitride nanotubes

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nano-Micro Letters 2025年第1期17卷 548-558页

作者： Ying Wang Kai Zhang Liping Ding Liyun Wu Songfeng E Qian He Nanyang Wang Hui Zuo Zhengyang Zhou Feng Ding Yue Hu Jin Zhang Yagang Yao National Laboratory of Solid State Microstructures College of Engineering and Applied SciencesJiangsu Key Laboratory of Artificial Functional Materialsand Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093People’s Republic of China School of electronic Information and Artificial Intelligence Shaanxi University of Science&TechnologyXian 710000People’s Republic of China College of Bioresources Chemical and materials Engineering Shaanxi University of Science&TechnologyXian 710000People’s Republic of China Key Laboratory of Carbon materials of Zhejiang Province College of Chemistry and Materials EngineeringWenzhou UniversityWenzhou 325000People’s Republic of China Shenzhen Institutes of Advanced Technology Chinese Academy of SciencesShenzhen 518000People’s Republic of China College of Chemical and Molecular Engineering Peking UniversityBeijing 100871People’s Republic of China

Lowering the synthesis temperature of boron nitride nanotubes(BNNTs)is crucial for their *** primary reason for adopting a high temperature is to enable the effective activation of highmelting-point solid *** this study,we developed a novel approach for efficiently activating boron by introducing alkali metal compounds into the conventional MgO–B *** approach can be adopted to form various low-melting-point AM–Mg–B–O growth *** growth systems have improved catalytic capability and reactivity even under low-temperature conditions,facilitating the synthesis of BNNTs at temperatures as low as 850℃.In addition,molecular dynamics simulations based on density functional theory theoretically demonstrate that the systems maintain a liquid state at low temperatures and interact with N atoms to form BN *** findings offer novel insights into the design of boron activation and are expected to facilitate research on the low-temperature synthesis of BNNTs.

关键词： Boron nitride nanotubes Low-temperature Boron activation Density functional theory

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Spectroscopic properties of Gd_2O_3:Dy^(3+)nanocrystals

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Journal of Rare Earths 2013年第3期31卷 235-240页

作者：彭玲玲韩涛陈慧张铁军 Chongqing Key Laboratory of Micro/nano materials Engineering and Technology Research Center for Material Interdisciplinary ScienceChongqing University of Arts and Science

Gd203：Dy3＋ nanocrystals were synthesized via solvothermal method followed by a subsequent calcination. The samples were characterized by X-ray diffraction （XRD）, transmission electron microsopy （TEM）, electronic dispersive X-ray spectroscopy （EDX）, photoluminescence （PL） spectrum and decay curves. The effect of the annealing temperature on the crystallinity and particle size was studied; heat treatment improved the crystallinity of as-prepared nanocrystals as well as increased their particle size. The nanocryatals presented monodispersed spherical shape under TEM. Photoluminescence spectra showed that nanocrystal exhibited strong yellow emission corresponding to 4F9/2----6HI3/2 transition （573 nm） of Dy3＋ under UV light excitation, which broadened with the particle size decreased without structure changed. The theoretical mechanism of luminescence was explored and surface effect was thought to be the main reason.

关键词： gadolinium oxides nanocrystal photoluminescence surface effect rare earths

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High-efficiency dielectric capacitors based on BaTi_(0.5)Hf_(0.5)O_(3) films

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Rare Metals 2023年第8期42卷 2545-2551页

作者： Yan Lin Fei Li Zhen Li State Key Laboratory of Solidification Processing Center for Nano Energy MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi'an 710072China electronic materials research Lab Key Lab of Education Ministry and State Key Laboratory for Mechanical Behavior of MaterialsSchool of Electronic Science and EngineeringXi'an Jiaotong UniversityXi'an 710049China

Film dielectric capacitors enabled with large breakdown field strength and high energy density play a key role for compact and integrated power ***,the energy storage efficiency is always sacrificed as we tried to increase the energy *** trade-off between energy density and efficiency means significant energy dissipation and thermal effects,which will lead to a deterioration ofthe reliability and lifetime of the dielectric capacitors.

关键词： dielectric lifetime energy

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