检索结果-内蒙古大学图书馆

Dense carbon nanofiber self-supporting electrode fabricated by orientation/compaction strategy for high volumetric lithium storage capacity

引用

Progress in Natural Science:Materials International 2025年第1期35卷 229-237页

作者： Haihui Liu Chaoqun Chen Qiang Xu Yan Song Xiangwu Zhang Chang Ma Tianjin Municipal Key Lab of Advanced Fiber and Energy Storage Technology Tiangong University CAS Key Laboratory of Carbon Materials Institute of Coal Chemistry Chinese Academy of Sciences Fiber and Polymer Science Program Department of Textile Engineering Chemistry and Science Wilson College of Textiles North Carolina State University

Low bulk density greatly restricts the large-scale application of electrospun carbon-based fiber membrane as electrode in energy storage devices. To solve the above challenges, herein an orientation-compaction densification strategy is proposed to enhance the bulk density and volumetric capacity of PAN-based carbon nanofiber membranes as self-supporting electrode used in lithium-ion batteries（LIBs）. Specifically, highly-oriented fibers are achieved by high-speed roller collecting during electrospinning, and compaction densification is conducted by hot-pressing treatment. The effects of collecting speed and hot-pressing pressure on the morphology, conductivity,bulk density, tensile strength, and flexibility of the obtained carbon nanofiber membrane are *** to conventional fiber membranes, of which fibers are disorderly stacked, the oriented fiber membrane is much easier to achieve dense stacking by compaction. The obtained dense carbon nanofiber membrane demonstrates a bulk density of 0.566 g cm-3, and shows a significantly-enhanced volumetric capacity(318.3 mA h cm-3), high-rate performance(86.6 mA h cm-3at 5 A g-1), and satisfactory cycling stability when used as selfsupporting electrode of LIBs.

关键词： Bulk density Densification Electrospinning Orientation-compaction Volumetric capacity

来源：评论

学校读者我要写书评

暂无评论

High-performance flexible Sb_(2)Se_(3) thin-film photodetector for tunable color imaging and wearable physiological monitoring applications

引用

Nano Research 2025年第2期18卷 687-698页

作者： Shuo Chen Hong-Bo Li Yi Fu Guo-Qiang Liu Muhammad Ishaq Jun Luo Jian-Min Li Bo Che Jing-Ting Luo Liming Ding Tao Chen Guang-Xing Liang Shenzhen Key Laboratory of Advanced Thin Films and Applications Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong ProvinceState Key Laboratory of Radio Frequency Heterogeneous IntegrationCollege of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060China The Hospital of Shenzhen General Station of Exit and Entry Frontier Inspection Shenzhen 518024China Key Laboratory of Artificial Micro-and Nano-structures of Ministry of Education School of Physics and TechnologyWuhan UniversityWuhan 430072China Hefei National Research Center for Physical Sciences at Microscale CAS Key Laboratory of Materials for Energy ConversionDepartment of Materials Science and EngineeringUniversity of Science and Technology of ChinaHefei 230026China Center for Excellence in Nanoscience(CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS)National Center for Nanoscience and TechnologyBeijing 100190China

Antimony selenide(Sb_(2)Se_(3))has recently made considerable photovoltaic,advancements in photoelectrochemical,and photodetector research scenarios,owing to its advantageous material merits and superior optoelectronic *** contrast,the exploration of flexible Sb_(2)Se_(3) photoelectric devices are less attempted,though it possesses unique one-dimensional(1D)crystal structure to enable large deformation ***,we develop a flexible Sb2Ses thin-film photodetector on polyimide *** to the high-quality SbSes light absorber and benign interfaces at both back contact and heterojunction regions,the carrier dynamics are effectively *** leading flexible Sb_(2)Se_(3) photodetector showcases self-powered and broadband features,with exceptional responsivity of 0.51 A·W^(-1) and realistic detectivity up to 1.32×10^(13) Jones,ultra-fast response speed of 49 ns/351 ns of rise and decay times,and remarkable mechanical deformation stability,flourishing the high-level development for flexible Sb_(2)Se_(3) ***,a tunable single/dual-color flexible imaging system under band alignment modulation,along with a wearable and accurate heart rate/arterial blood oxygen saturation photoplethysmography detection system highlights the great application potential for flexible Sb,Ses photodetectors.

关键词： Sb_(2)Se_(3) flexible thin-film photodetector color imaging heart rate arterial blood oxygen saturation

来源：评论

学校读者我要写书评

暂无评论

Recent progress in metal-organic frameworks(Part Ⅱ—material application)

引用

Science China Chemistry 2025年第5期68卷 1642-1702页

作者： Jiandong Pang Wentao Jiang Xue-Wen Zhang Hao-Long Zhou Yuxiu Sun Wei Gong Bin Wang Fuyin Ma Linwei He Long Chen Qiang Chen He-Qi Zheng Yuanjing Cui Wen-Jie Shi Chao Zhang Mei Wang Yue-Biao Zhang Jie-Peng Zhang Chongli Zhong Yong Cui Shuao Wang Jian-Rong Li Guodong Qian Tong-Bu Lu Huan Pang Xian-He Bu School of Materials Science and Engineering Nankai University School of Physical Science and Technology Shanghai Tech University MOE Key Laboratory of Bioinorganic and Synthetic Chemistry GBRCE for Functional Molecular EngineeringSchool of ChemistryIGCMESun Yat-sen University Department of Chemistry Shantou University School of Chemical Engineering and Technology Tiangong University School of Chemistry and Chemical Engineering Shanghai Jiao Tong University State Key Laboratory of Radiation Medicine and Protection School for Radiological and Interdisciplinary SciencesSoochow University College of Materials Science & Engineering Beijing University of Technology State Key Laboratory of Silicon and Advanced Semiconductor Materials Cyrus Tang Center for Sensor Materials and ApplicationsSchool of Materials Science & EngineeringZhejiang University Institute for New Energy Materials and Low Carbon Technologies School of Materials Science and EngineeringTianjin University of Technology School of Chemistry and Chemical Engineering Yangzhou University

As a class of functional crystalline porous materials, metal-organic frameworks(MOFs) gained rapid development in the past three decades and a large number of MOFs with ordered structures, high surface areas, and functionalized channels have been investigated. MOFs and MOF-derived/composite materials show great potential in many application fields. In this review, we discussed the main applications of MOFs and MOF-derived/composite materials in small molecule storage, separation, luminescence, sensing, multitype catalysis, and energy storage. In addition, challenges and problems in the future research of MOFs-related fields are also discussed.

关键词： metal-organic frameworks storage and separation sensing and detection multitype catalysis energy storage

来源：评论

学校读者我要写书评

暂无评论

Uniform Ag_(6)Mo_(10)O_(33) meso/nanowires:High-efficient fabrication,novel growth mechanism,and reversibly high-energy sodium-ion battery

引用

Nano Research 2025年第4期18卷 189-198页

作者： Yuqing Yang Juan Liu Meiqi Zhang Qing Wang Ziqing Gui Xucheng Gu Chunsheng Li Yan Sun Yuxuan Sun Lianghuan Qin Yuzhen Zhao Wanzheng Lu Xiaofang Xu Xufeng Wang Key Laboratory of Advanced Electrode Materials for Novel Solar Cells for Petroleum and Chemical Industry of China School of Chemistry and Life SciencesSuzhou University of Science and TechnologySuzhou 215009China Xi’an Key Laboratory of Advanced Photo-electronics Materials and Energy Conversion Device School of Electronic InformationXijing UniversityXi’an 710123China School of Safety Science and Engineering Changzhou UniversityChangzhou 213164China Suzhou Key Laboratory of Biophotonics School of Optical and Electronic InformationSuzhou City UniversitySuzhou 215104China State Key Laboratory of Advanced Chemical Power Sources Guizhou Meiling Power Sources Co.LtdZunyi 563003China

Silver molybdate(Ag_(6)Mo_(10)O_(33))exhibits excellent catalytic properties and photocatalytic degradation owing to its unique chemical and structural characteristics,but its prospective applications in electrochemistry energy storage have not received sufficient ***,the Ag_(6)Mo_(10)O_(33) meso/nanowires with superior morphological characteristics are fabricated employing a high-efficient microwave irradiation ***,the novel synthesizing mechanism of ultralong Ag_(6)Mo_(10)O_(33) mesowires is also proved to be a“self-assembly-dissolution-recrystallization-Ostwald-ripening”process,by exploring through the parallel experiments on the dramatic alterations in topology and size of Ag_(6)Mo_(10)O_(33) at continuous reaction ***,the properties of the ultralong uniform Ag_(6)Mo_(10)O_(33) mesowires for the sodium storage are investigated via cyclic voltammetry,electrochemical impedance spectroscopy and galvanostatic ***,these as-obtained Ag_(6)Mo_(10)O_(33) mesowires exhibit an outstanding initial capacity(1587.9 mAh·g^(-1)),a remarkable specific capacity for the second cycle(817.9 mAh·g^(-1)),and an excellent reversible capacity(551.5 mAh·g^(-1) after 30 cycles).The superior electrochemical properties of the nanoscaled silver molybdate are ascribed to the lower charge transfer resistance due to the microstructure of the smallest size Ag_(6)Mo_(10)O_(33) nanosheets that exhibit a thickness of around 5 nm,which can provide a great contact with the electrolyte,facilitating the rapid diffusion of sodium ions at the electrode/electrolyte interface and the rapid transport of sodium ions within the electrode ***,the proposed synthetic strategy and achieved deep insights will stimulate the development of Ag_(6)Mo_(10)O_(33) for high-safety and long-life sodium ion batteries.

关键词： sodium-ion batteries self-assembly-dissolution-recrystallization-Ostwald-ripening fabricating mechanism microwave irradiation fabrication Ag_(6)Mo_(10)O_(33)meso/nanowires energy storage and conversion

来源：评论

学校读者我要写书评

暂无评论

Stepwise activated probe for cell surface glycan imaging

引用

Science China Chemistry 2025年

作者： Chunyi Zhang Jing Chen Xiaoyao Bai Shengnan Fu Xin Su State Key Laboratory of Organic-Inorganic Composites Beijing Key Laboratory of Bioprocess Beijing Advanced Innovation Center for Soft Matter Science and Engineering College of Life Science and Technology Beijing University of Chemical Technology

Fluorescent DNA probes commonly used for in situ imaging of cell surface glycans are “always-on” probes(AOPs), which produce high background noise and lack spatial specificity. Molecular dynamics simulations indicate that single-stranded DNA(ssDNA) can stably associate with the cell membrane, contributing to persistent background signals in AOPs. To overcome this challenge, a stepwise activated probe(SAP) is developed for in situ imaging of cell surface glycans. In SAP, the cell surface glycan is labeled by rolling circle amplification product through metabolic glycan labeling strategies. The product hybridizes a fluorophore and quencher-labeled ssDNA reporter to form a double strand producing primary enhancement of fluorescence signal. Nicking enzyme(***) cleaves the double strand and releases the quencher, further enhancing the signal. Nonspecific absorption of the reporter on the cellular membrane does not increase the fluorophore-quencher distance in SAP or trigger *** cleavage. As a result, only the glycan sites are illuminated. SAP not only exhibits high imaging specificity but also greatly simplifies the imaging procedure by reducing the washing steps. SAP offers a considerable improvement in detection specificity and sensitivity by employing a two-step activation and amplification process, making it a powerful method for in situ fluorescence imaging.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Comparative Study of CCPS Based on Permanent Magnet and Electrically Excited HIA for Selecting Rational Topological Structure

CPSS Transactions on Power Electronics and Applications

引用

CPSS Transactions on Power Electronics and Applications 2025年第1期10卷 66-84页

作者： Longjian Liu Kexun Yu Xianfei Xie Zhijian Liu Faculty of Electric Power Engineering Kunming University of Science and Technology Kunming China State Key Laboratory of Advanced Electromagnetic Technology Huazhong University of Science and Technology Wuhan China

In order to facilitate the selection of an optimal topological structure for rational pulsed capacitor charging power supplies (CCPS), this paper presents a comparative analysis of CCPS based on permanent magnet excited (PME) and electrically excited (EE) homopolar inductor alternators (HIA). The findings indicate that the d-axis transient inductance of the PME HIA is marginally greater than that of the EE HIA, a result that contradicts initial expectations. Notably, the PME HIA does not require consideration of transient flux variations, whereas the EE HIA does. The study establishes relationships among the enhancement of charge performance, efficiency, capacitance, frequency, and field winding (FW) resistance. It is observed that as capacitance, frequency, and FW resistance increase, there is a corresponding improvement in charge performance. The equipotential line representing the enhancement of charge performance approximates an inverse proportional function, suggesting that if the product of FW resistance and capacitance, or the product of FW resistance and frequency, remains constant, the improvement in charge performance will also be constant. Furthermore, it is noted that as capacitance and frequency increase, the improvement in efficiency diminishes, which is contrary to the trend observed in charge performance. To comprehensively evaluate the enhancement of charge performance and efficiency, a weighted function is proposed. This function aids in the selection of a rational topological structure for CCPS, distinguishing between those based on PME HIA and those based on EE HIA. Based on the results derived from the weighted improvement analysis, appropriate topological structures for CCPS can be identified according to varying capacitance, frequency, and FW resistance. Specifically, when the product of capacitance and FW resistance, or the product of frequency and FW resistance, is substantial, the PME HIA is recommended; conversely, the EE HIA is preferred

关键词： Transient analysis Resistance Capacitance Inductance Capacitors Power system measurements Density measurement Magnetic fields Windings Iron

来源：评论

学校读者我要写书评

暂无评论

A novel active-passive protection strategy endows carbonyl iron with excellent intelligent anti-corrosion and microwave absorption dual functional characteristics

引用

Nano Research 2025年第1期18卷 487-500页

作者： Wei Tian Quanyuan Feng Linbo Zhang Yinfan Liu Xian Jian Longjiang Deng Institute of Microelectronics School of Information Science and TechnologySouthwest Jiaotong UniversityChengdu 611756China National Engineering Researching Centre of Electromagnetic Radiation Control Materials Key Laboratory of Multi-Spectral Absorbing Materials and Structures of Ministry of EducationState Key Laboratory of Electronic Thin Films and Integrated DevicesSchool of Electronic Science and EngineeringUniversity of Electronic Science and Technology of ChinaChengdu 611731China School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731China The Yangtze Delta Region Institute(Huzhou)&School of Electronic Science and Engineering University of Electronic Science and Technology of ChinaHuzhou 313001China

Carbonyl iron absorbers(CI)face significant challenges in practical applications,such as corrosion,interface bonding failure,detachment,and high maintenance ***,we have developed intelligent self-healing technology based on proactive/passive mechanisms via in situ synthesis of self-healing factors(polydopamine/benzotriazole(PDA/BTA))and physical barrier layers(SiO_(2)/1,1,1,3,3,3-hexamethyl disilazane,SiO_(2)/HMDS)to enhance corrosion resistance,while also being compatible with efficient microwave absorption *** unique multiscale structure gives full play to the utilization of the roles of each functional layer,including the intelligent self-healing features of PDA/BTA,physical shielding and spatial confinement characteristics of SiO_(2)/HMDS,and magnetic-dielectric synergistic mechanism resulted from the good impedance matching characteristics,the conduction loss,the interfacial polarization loss and natural *** asfabricated composites achieved an exceptional minimum reflection loss value of-55.4 dB at 10.7 GHz and the effective absorption band of 7.6 ***,it still exhibits obvious self-healing and corrosion resistance characteristics after 360 h corrosion treatment,ascribed to the self-healing mechanism of PDA/BTA and the blocking intervention effect of SiO_(2)/*** work is considered to pave the way for the synthesis of high-performance magnetic absorbers,especially in enhancing their intelligent self-healing ability in corrosive environments.

关键词： microwave absorption intelligent self-healing technology carbonyl iron multiscale structure magneticdielectric synergistic mechanism

来源：评论

学校读者我要写书评

暂无评论

Controllable and Flexible 4D Fabrication Strategy for Expandable Micro-sensor Elements on the Fiber

引用

Journal of Lightwave technology 2025年第10期43卷 4802-4807页

作者： Li, Chang-Xu Chen, Qiao-Ling Li, Xi-Lin Qu, Jian Liu, Yi Qu, Shi-Liang Harbin Institute of Technology School of Physics Harbin15001 China Jilin University College of Electronic Science and Engineering State Key Laboratory of Integrated Optoelectronics Changchun130012 China University of Electronic Science and Technology of China School of Information and Communication Engineering Chengdu611731 China Soochow University Jiangsu Provincial Key Laboratory of Advanced Robotics School of Mechanical and Electric Engineering Suzhou215123 China

In the realm of high-precision integrated applications involving optical fiber sensor components and materials, conventional macro-processes such as fiber coating and tip dispensing lack precise control and flexibility. In this paper, a two-photon polymerization technique was employed to fabricate a microscopic F-P framework and a peripheral fence on the tip of a single-mode fiber. Subsequently, precision dispensing methods were utilized to introduce hydrogel into the fence. A concept of the "sensitization-fence"is introduced to enhance sensitivity. Finite element simulations revealed that as the height of the fence increased, the displacement of the F-P sensing cavity also increased, indicating heightened sensitivity. In the subsequent experimental exploration, acrylic acid hydrogels, PDMS, and polyvinyl alcohol were successively filled into the fence, and ideal experimental results were obtained. This proof of the sensitizing concept provides a new application idea for improving the function of micro-devices on the fiber. © 1983-2012 IEEE.

关键词： Single mode fibers

来源：评论

学校读者我要写书评

暂无评论

Multiple impacts of trace Tb addition on the secondary recrystallization andmagnetostriction of Fe–Ga thin sheet

引用

International Journal of Minerals,Metallurgy and Materials 2025年第4期32卷 902-914页

作者： Jiande Liu Zhenghua He Yuhui Sha Xiaofei Zhu Hongbo Hao Lijia Chen Liang Zuo School of Materials Science and Engineering Shenyang University of TechnologyShenyang 110870China Shenyang Key Laboratory of Advanced Structural Materials and Applications Shenyang University of TechnologyShenyang 110870China Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education) Northeastern UniversityShenyang 110819China Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization Baotou Research Institute of Rare EarthsBaotou 014030China

Fe–Ga sheets with large magnetostriction are required for improving the conversion efficiency under the ultra-high frequencymagnetic field. Trace Tb element doping can simultaneously improve the magnetostriction and ductility of Fe–Ga alloy. However, the im-pact of trace Tb doping on the microstructure and magnetostriction of Fe–Ga thin sheets is an open question. In this paper, the effects oftrace Tb addition on the secondary recrystallization and magnetostriction of Fe–Ga thin sheets are systematically studied by comparing thecharacteristics evolution of precipitation, texture, and nanoinclusions. The results indicate that trace Tb addition accelerates the secondaryrecrystallization of Goss texture due to the combined action of the bimodal size distributed precipitates, smaller grains, and more HEGBsin primary recrystallization. After quenching at 900℃, the magnetostriction value in 0.07 at %Tb-doped Fe_(81)Ga_(19)thin sheets increases by 30% to that of Fe_(81)Ga_(19)thin sheets. The increase in magnetostriction is attributed to the decrease in the number of Tb-rich precipitates andthe higher density of the nanometer-sized modified-D0_(3)inclusions induced by the dissolving of trace Tb elements after quenching. Theseresults demonstrate a simple and efficient approach for preparing Fe–Ga thin sheets with a large magnetostrictive coefficient by a combin-ation of trace RE element addition and conventional rolling method.

关键词： magnetostriction alloy thin sheets RE dopant secondary recrystallization precipitate phase nanoheterogeneity.

来源：评论

学校读者我要写书评

暂无评论

Exploring the Magnetism of C_(5)/C_(2)B_(3) Heteroleptic Organolanthanide Sandwiches

引用

Chinese Journal of Chemistry 2025年第2期43卷 131-138页

作者： Ye-Ye Liu Qian-Cheng Luo Peng-Bo Jin Yan-Zhen Zheng Frontier Institute of Science and Technology(FIST) State Key Laboratory of Electrical Insulation and Power EquipmentMOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed MatterXi’an Key Laboratory of Electronic Devices and Material Chemistry and School of ChemistryXi’an Jiaotong UniversityXi’anShaanxi710054 China Department of Hepatobiliary Surgery and Institute of Advanced Surgical Technology and Engineering The First Affiliated Hospital of Xi’an Jiaotong UniversityXi’anShaanxi710061 China

Two families of cyclopentadienyl(Cp)/carboranyl heteroleptic sandwiched organolanthanide complexes,namely[Ln{η^(5):σ-Me_(2)C(C_(5)H_(4))(C_(2)B_(10)H_(10))}_(2)][Li(DME)_(3)](1Ln,Ln=Tb,Dy,Ho,Er)and[2-THF-2'-(μ^(2)-Cl)Li(THF)_"(3)-2,2'-Ln(nido-1,7-C_(2)B_(9)H_(11))Cp*](2Dy),were *** of 1Ln has been proposed based on the mixing-ligands idea by linking Cp and ***,the carborane cage of[Me_(2)C(C_(5)H_(4))(C_(2)B_(10)H_(10))]_(2)−deprotons and forms a mono-C−anion rather than deboron to form dicarborllide ***,the family of 1Ln features a dysprosocenium skeleton with extra two coordination of C−anions of *** coordination geometry is more like a tetrahedron if abstracting the centroids of two coordinated Cp *** this cubic-type geometry,no significant magnetic axiality is presented;only 1Dy and 1Tb show field-induced slow magnetic relaxation behavior below 10 *** by 1Ln,the free pentamethylcyclopentadienyl(Cp^(*−))and nido-dicarborllide ligands are used to sandwich central Dy3+ion,achieving heteroleptic complex *** bending angle by linking the centroid of Cp^(*−),Dy^(3+)and C_(2)B_(3)^(2−)in 2Dy is increased to 132.8(1)°.As such,the effective energy barrier for magnetic reversal(Ueff)and magnetic blocking temperature TB(ZFC)are both increased(Ueff=616(10)K;TB=6 K).The effort of further enhancing Ueff and TB in such heteroleptic organolanthanide sandwiches should rely on keeping increasing the ligand axiality.

关键词： Single-molecule magnets Heteroleptic sandwiched complexes nido-Dicarborllide Lanthanides Cyclopentadienyl

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：