检索结果-南通市图书馆

Hollow multi-nanochannel carbon nanofiber/MoS_(2)nanoflower composites as binder-free lithium-ion battery anodes with high capacity and ultralong-cycle life at large current density

引用

Journal of Materials Science & Technology 2021年第18期77卷 169-177页

作者： Xuepeng Ni Zhe Cui Ning Jiang Huifang Chen Qilin Wu anqi ju Meifang Zhu College of Materials Science and Engineering&Shanghai Collaborative Innovation Center for High Performance Fiber Composites Donghua UniversityShanghai201620China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials.Donghua University Shanghai201620China Key Laboratory of High Performance Fibers&Products Ministry of EducationDonghua UniversityShanghai201620China

The electrode materials with high pseudocapacitance can enhance the rate capability and cycling stability of lithium-ion storage ***,we fabricated MoS_(2)nanoflowers with ultra-large interlayer spacing on N-doped hollow multi-nanochannel carbon nanofibers(F_(2)-MoS_(2)/NHMCFs)as freestanding binder-free anodes for lithium-ion batteries(LIBs).The ultra-large interlayer spacing(0.78~1.11 nm)of MoS_(2)nanoflowers can not only reduce the internal resistance,but also increase accessible active surface area,which ensures the fast Li+intercalation and *** NHMCFs with hollow and multi-nanochannel structure can accommodate the large internal strain and volume change during lithiation/delithiation process,it is beneficial to improving the cycling stability of *** from the above combined structure merits,the F_(2)-MoS_(2)/NHMCFs electrodes deliver a high rate capability 832 mA h g^(-1)at 10 A g^(-1)and ultralong cycling stability with 99.29 and 91.60%capacity retention at 10 A g^(-1)after 1000 and 2000 cycles,*** is one of the largest capacities and best cycling stability at10 A g^(-1)ever reported to date,indicating the freestanding F2-MoS_(2)/NHMCFs electrodes have potential applications in high power density LIBs.

关键词： Carbon nanofibers Electrospinning MoS_(2) Freestanding Lithium ion batteries

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

XO(X=Ti,Mn)decorated hollow multi-channel carbon sub-micro fiber networks as freestanding cathode for LieS batteries

引用

Journal of Materiomics 2023年第1期9卷 215-222页

作者： Qianqian Wu Tianbao Yan Kunming Li Xuepeng Ni Fanlong Zeng anqi ju State Key Laboratory for Modification of Chemical Fibers and Polymer Materials&College of Materials Science and Engineering Donghua UniversityShanghai201620China Center for Civil Aviation Composites&Shanghai Collaborative Innovation Center of High-Performance Fibers and Composites(Province-Minitry Joint) Donghua UniversityShanghai201620China

Lithium-sulfur(Lisingle bondS)batteries are considered as one of the most promising high-energy storage devices due to the high theoretical capacity(1675 mA·h·g^(-1))and large energy density(2600 W·h·kg^(-1)).However,the poor conductivity of sulfur and“shuttle effect”of soluble polysulfide intermediates limit practical applications of Lisingle bondS ***,four kinds of carbon sub-micro fibers with different structures were designed and prepared,the effect of structure on Lisingle bondS battery was *** this basis,the XO(X=Ti,Mn)decorated hollow multi-channel carbon sub-micro carbon fibers(HMCMFs)were prepared by electrospinning and *** HMCMFs can not only supply nanopores for relieving the expansion of sulfur but also served as high conductivity freestanding substrate for sulfur loading,meanwhile the decorated XO(X=Ti,Mn)can provide powerful chemical adsorption to polysulfide intermediates and limit“shuttle effect”Therefore,the TiO-HMCMFs/S composite shows high specific capacity of 900 mA·h·g^(-1)and maintain stable specific capacities up to∼600 mA·h·g^(-1)over 300 cycles at 0.1 A·g^(-1).This work offers a facile method to build efficient sulfur cathode to acquire Lisingle bondS batteries with high performance.

关键词： Lithium-sulfur batteries TiO MnO Carbon sub-miacro fibers

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Construction of NiCo_(2)O_(4) nanoflake arrays on cellulose-derived carbon nanofibers as a freestanding electrode for high-performance supercapacitors

引用

Frontiers of Chemical Science and Engineering 2023年第6期17卷 691-703页

作者： Xuepeng Ni Kunming Li Changlei Li Qianqian Wu Chenglin Liu Huifang Chen Qilin Wu anqi ju College of Materials Science and Engineering&State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Donghua UniversityShanghai 201620China Key Laboratory of High-Performance Fibers&Products Ministry of EducationDonghua UniversityShanghai 201620China Weifang Xinlong Biomaterial Co. Ltd.Weifang 261000China

Cellulose has a wide range of applications in many fields due to their naturally degradable and low-cost characteristics,but few studies can achieve cellulose-nanofibers by conventional ***,we demonstrate that the freestanding cellulose-based carbon nanofibers are successfully obtained by a special design of electrospinning firstly,pre-oxidation and high-temperature carbonization(1600℃),which display a superior electrical conductivity of 31.2 S·cm^(-1)and larger specific surface area of 35.61 m^(2)·g^(-1)than that of the polyacrylonitrile-based carbon nanofibers(electrical conductivity of 18.5 S·cm^(-1),specific surface area of 12 m^(2)·g^(-1).The NiCo_(2)O_(4)nanoflake arrays are grown uniformly on the cellulose-based carbon nanofibers successfully by a facile one-step solvothermal and calcination *** as-prepared cellulose-based carbon nanofibers/NiCo_(2)O_(4)nanoflake arrays are directly used as electrodes to achieve a high specific capacitance of 1010 F·g^(-1)at 1 A·g^(-1)and a good cycling stability with 90.84%capacitance retention after 3000 times at 10 A·g^(-1).Furthermore,the all-solid-state symmetric supercapacitors assembled from the cellulose-based carbon nanofibers/NiCo_(2)O_(4)deliver a high energy density of 62 W·h·kg(-1) at a power density of 1200 W·kg^(-1).Six all-solid-state symmetric supercapacitors in series can also power a‘DHU’logo consisted of 36 light emitting diodes,confirming that the cellulose-based carbon nanofiber is a promising carbon matrix material for energy storage devices.

关键词： cellulose carbon nanofibers NiCo_(2)O_(4) supercapacitors

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Fabrication of 3D ordered needle-like polyaniline@hollow carbon nanofibers composites for flexible supercapacitors

引用

Chinese Chemical Letters 2021年第8期32卷 2448-2452页

作者： Xuepeng Ni Yang Jiang Haoyu Chen Kunming Li Huifang Chen Qilin Wu anqi ju College of Materials Science and Engineering&State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Donghua UniversityShanghai 201620China Zhejiang Provincial Key Laboratory of Yarn Material Forming and Composite Processing Technology Jiaxing UniversityShanghai 201620China Key Laboratory of High-Performance Fibers&Products Ministry of EducationDonghua UniversityJiaxing 314001China

Carbon nanofiber-based supercapacitors have broad prospects in powering wearable electronics owing to their high specific capacity,fast charge/discharge process,along with long-cycling ***,a poly(ac rylo n it rile-co-β-methyl hydrogen itaconate) copolymer was prepared and used to synthesize flexible hollow carbon nanofibers(HCNFs) via an electrospinning method without breaking after multiple ***,the inner and outer surfaces of HCNFs were evenly covered with ordered needlelike polyaniline(PANI) through in-situ polymerization methods to obtain three-dimensional flexible HCNFs/PANI composites,which exhibited a high capacity 1196.7 F/g at 1 A/g and good cycling stability(90.1% retention at 5 A/g after 3000 cycles).The symmetrical supercapacitor based on the HCNFs/PANI composites also delive red an outsta nding electrochemical performance with high energy/power density(60.28 Wh/kg at 1000 W/kg) and superior cycling durability(90% capacitance retention after at 5 A/g3000 cycles),which confirmed that the HCNFs/PANI composites had a wide application potential in flexible energy storage devices.

关键词： Flexible Polyaniline Electrospinning Hollow carbon nanofibers Supercapacitors

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Carbon‑Based Fibers: Fabrication, Characterization and Application

引用

Advanced Fiber Materials 2022年第4期4卷 631-682页

作者： Kunming Li Xuepeng Ni Qianqian Wu Chunshun Yuan Changlei Li Dong Li Huifang Chen Yonggen Lv anqi ju College of Materials Science and Engineering and State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Donghua UniversityShanghai 201620China Key Laboratory of High‑Performance Fibers and Products Ministry of EducationDonghua UniversityShanghai 201620China Weifang Xinlong Biomaterial Co. Ltd.Weifang 261000China

In recent years,the carbon-based fibers(CBFs)including carbon fibers,carbon nanotube fibers and graphene fibers have received extensive attention due to excellent thermal,electrical and mechanical ***,the current status of CBFs is reviewed from the following aspects:sprecursors,preparation,performance and *** precursor systems including acrylonitrile copolymers,pitch,cellulose and lignin,carbon nanotube,graphene and other rare synthetic polymeric *** relationship of preparation method and performance of CBFs is *** addition,this review gives the overview of application and future development of CBFs.

关键词： Carbon-based fibers Carbon fibers Carbon nanotube Graphene

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Mesoporous Nanofibers from Extended Electrospinning Technique

引用

Advanced Fiber Materials 2024年第3期6卷 658-685页

作者： Pengpeng Qiu Richeng Jin Younggyu Son anqi ju Wan Jiang Lianjun Wang Wei Luo State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Institute of Functional MaterialsCollege of Materials Science and EngineeringDonghua UniversityShanghai 201620China Department of Environmental Engineering Department of Energy Engineering ConvergenceKumoh National Institute of TechnologyGumi 39177Republic of Korea

One-dimensional(1D)mesoporous nanofibers(NFs)have recently attracted tremendous interest in different fields,in virtue of their mesoporous structure and 1D ***,conventional electrospinning,as a versatile approach for producing 1D nanostructures,can only fabricate solid NFs without pores or with a microporous *** this review,we focus on the extensions of the electrospinning technique to create 1D mesoporous fibrous structures,which can be categorized into:(i)foaming-assisted,(ii)phase separation-induced,(iii)soft-templated,and(iv)monomicelle-directed *** focus is on the synthesis strategies of 1D mesoporous NFs,and their underlying mechanisms,with looking into the control over pore sizes,pore structures,and ***,the structure-related performances of mesoporous NFs in photocatalysis,sensing,and energy-related fields are ***,the potential challenges for the future development of 1D mesoporous fibers are examined from the viewpoint of their synthetic strategies and applications.

关键词： Nanofibers Electrospinning Mesoporous Soft-templated Monomicelles

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Ordered mesoporous nanofibers mimicking vascular bundles for lithium metal batteries

引用

National Science Review 2024年第5期11卷 291-302页

作者： Xiaohang Zhu Mengmeng Liu Fanxing Bu Xin-Yang Yue Xiang Fei Yong-Ning Zhou anqi ju Jianping Yang Pengpeng Qiu Qi Xiao Chao Lin Wan Jiang Lianjun Wang Xiaopeng Li Wei Luo State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Institute of Functional Materials College of Materials Science and Engineering Donghua University Institute for Conservation of Cultural Heritage Shanghai University Frontiers Science Center for Transformative Molecules School of Chemistry and Chemical EngineeringShanghai Jiao Tong University Department of Materials Science Fudan University

Hierarchical self-assembly with long-range order above centimeters widely exists in nature. Mimicking similar structures to promote reaction kinetics of electrochemical energy devices is of immense interest, yet remains challenging. Here, we report a bottom-up self-assembly approach to constructing ordered mesoporous nanofibers with a structure resembling vascular bundles via electrospinning. The synthesis involves self-assembling polystyrene（PS） homopolymer, amphiphilic diblock copolymer, and precursors into supramolecular micelles. Elongational dynamics of viscoelastic micelle solution together with fast solvent evaporation during electrospinning cause simultaneous close packing and uniaxial stretching of micelles, consequently producing polymer nanofibers consisting of oriented micelles. The method is versatile for the fabrication of large-scale ordered mesoporous nanofibers with adjustable pore diameter and various compositions such as carbon, SiO2, TiO2and WO3. The aligned longitudinal mesopores connected side-by-side by tiny pores offer highly exposed active sites and expedite electron/ion transport. The assembled electrodes deliver outstanding performance for lithium metal batteries.

关键词： ordered mesoporous nanofibers electrospinning oriented micelles lithium metal batteries

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

碳纤维原丝用二元丙烯腈聚合物的合成及性能

引用

高分子材料科学与工程 2017年第6期33卷 37-41,47页

作者：刘俊男曹敏悦汪月夏朝斌王舒琳巨安奇江南大学纺织服装学院江苏无锡214122

设计合成了双功能共聚单体3-羧基-3-丁烯酰胺(CBA),采用溶液聚合的方法制备丙烯腈二元共聚物作为碳纤维前驱体,详细研究了单体配比对聚合反应、聚合物结构和预氧化性的影响。结果表明,随着单体投料中CBA含量的增加,聚合物中CBA含量增加... 详细信息

设计合成了双功能共聚单体3-羧基-3-丁烯酰胺(CBA),采用溶液聚合的方法制备丙烯腈二元共聚物作为碳纤维前驱体,详细研究了单体配比对聚合反应、聚合物结构和预氧化性的影响。结果表明,随着单体投料中CBA含量的增加,聚合物中CBA含量增加,而相对分子质量和转化率均逐渐降低;红外光谱和差示扫描量热分析表明CBA单体能够通过离子机理引发环化,使预氧化温度降低60℃以上,且随着CBA单体含量的增加,离子环化反应加强,放热速率降低,有利于避免集中放热,CBA可以明显改善聚丙烯腈(PAN)的预氧化性能,有利于制备高性能碳纤维。

关键词：碳纤维聚丙烯腈 3-羧基-3-丁烯酰胺溶液聚合

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

高分子量二元丙烯腈聚合物的合成及性能

引用

高分子材料科学与工程 2017年第6期33卷 42-47页

作者：曹敏悦刘俊男汪月夏朝斌王舒琳巨安奇江南大学纺织服装学院生态纺织教育部重点实验室江苏无锡214122

设计合成了双功能共聚单体3-酰胺基-3-丁烯酸甲酯(MMPA),以二元共聚合代替传统的三元共聚合,采用水相悬浮聚合的方法制备超高分子量丙烯腈二元共聚物作为碳纤维前驱体。采用傅里叶红外变换光谱仪、差示扫描量热分析仪和热失重分析仪详... 详细信息

设计合成了双功能共聚单体3-酰胺基-3-丁烯酸甲酯(MMPA),以二元共聚合代替传统的三元共聚合,采用水相悬浮聚合的方法制备超高分子量丙烯腈二元共聚物作为碳纤维前驱体。采用傅里叶红外变换光谱仪、差示扫描量热分析仪和热失重分析仪详细研究了单体配比对聚合物相对分子质量、结构及预氧化性能的影响,结果表明,共聚单体MMPA的加入使预氧化温度由240℃降低至213℃,且投料中随着MMPA含量的增加预氧化温度降低,预氧化程度加深,合成的共聚单体MMPA能够有效改善丙烯腈聚合物的预氧化性能,宽化放热峰,避免放热集中;水相悬浮制备得到的丙烯腈聚合物相对分子质量高达106.7×10~4,有利于提高碳纤维的力学性能。

关键词：碳纤维聚丙烯腈 3-酰胺基-3-丁烯酸甲酯水相悬浮聚合

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Automatic and Rapid Throughflow-Based Optimal Design Method for Multi-Stage Axial-Flow Compressors

引用

Journal of Thermal Science 2025年第1期34卷 77-91页

作者： LEI Fan ZHANG Xiawen ju Yaping ZHANG Chuhua Department of Fluid Machinery and Engineering School of Energy and Power EngineeringXi'an Jiaotong University Production and Environmental Department China Huaneng Group.Co.Ltd. State Key Laboratory for Strength and Vibration of Mechanical Structures Xi'an Jiaotong University

Throughflow design has the advantages of less time consumption and large optimization space,and thus is the corner stone of advanced design system of multi-stage axial-flow *** majority of relevant studies were limited to the throughflow inverse designs,and quite few works have been till now devoted to the throughflow optimal *** this work,an automatic and rapid throughflow-based optimal design method is proposed for axial-flow compressors in which a throughflow inverse design solver is embedded in optimal genetic algorithm to improve the design efficiency of axial-flow *** types of design parameters in the throughflow inverse design of axial-flow compressors,i.e.,swirl and shroud curve,are simultaneously used to optimize both the blade shape and flow *** proposed method is validated by the redesign optimization of the benchmark axial-flow compressor NASA Stage 35,and the CFD predictions show that the throughflow-based optimization leads to 1.18% efficiency benefit at design *** proposed method is then utilized to the two-dimensional throughflow optimal design of a large-scale 6.5-stage axial-flow industrial *** optimal design results are confirmed by CFD predictions,indicating that the proposed method can effectively improve the design adiabatic efficiency of the compressors by 1.09% within a few minutes on desk-top *** throughflow design implications are also obtained for advanced axial-flow industrial *** work could enhance the capability of throughflow design method and has engineering application value to explore the throughflow optimization space of multi-stage axial-flow compressors.

关键词： NASA

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

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：