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Enhancing micro-scale SiOx anode durability:Electro-mechanical strengthening of binder networks via anchoring carbon nanotubes with carboxymethyl cellulose

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Journal of Energy Chemistry 2025年第2期101卷 23-33页

作者： Chaeyeon Ha Jin Kyo Koo Jun Myoung Sheem Young-Jun Kim SKKU Advanced Institute of Nano Technology (SAINT) Sungkyunkwan University Department of Nano Science and Technology Sungkyunkwan University Advanced Center for Convergence Energy Storage System Sungkyunkwan University SKKU Institute of Energy Science and Technology (SIEST) Sungkyunkwan University

With the increasing prevalence of lithium-ion batteries（LIBs） applications,the demand for high-capacity next-generation materials has also *** currently considered a promising anode material due to its exceptionally high capacity for ***,the significant volumetric changes of SiOxduring cycling and its initial Coulombic efficiency（ICE） complicate its use,whether alone or in combination with graphite *** this study,a three-dimensional conductive binder network with high electronic conductivity and robust elasticity for graphite/SiOxblended anodes was proposed by chemically anchoring carbon nanotubes and carboxymethyl cellulose binders using tannic acid as a chemical *** addition,a dehydrogenation-based prelithiation strategy employing lithium hydride was utilized to enhance the ICE of *** combination of these two strategies increased the CE of SiOxfrom 74% to87% and effectively mitigated its volume expansion in the graphite/SiOxblended electrode,resulting in an efficient electron-conductive binder *** led to a remarkable capacity retention of 94% after30 cycles,even under challenging conditions,with a high capacity of 550 mA h g-1and a current density of 4 mA ***,to validate the feasibility of utilizing prelithiated SiOxanode materials and the conductive binder network in LIBs,a full cell incorporating these materials and a single-crystalline Ni-rich cathode was *** cell demonstrated a～27.3% increase in discharge capacity of the first cycle(～185.7 mA h g-1) and exhibited a cycling stability of 300 ***,this study reports a simple,feasible,and insightful method for designing high-performance LIB electrodes.

关键词： Lithium-ion batteries SiO x anode Blended anode carbon nanotubes Carboxymethyl cellulose Conductive binder network

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Effects of aggregate size distribution and carbon nanotubes on the mechanical properties of cemented gangue backfill samples under true triaxial compression

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 311-324页

作者： Qian Yin Fan Wen Zhigang Tao Hai Pu Tianci Deng Yaoyao Meng Qingbin Meng Hongwen Jing Bo Meng Jiangyu Wu State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering China University of Mining and TechnologyXuzhou 221116China State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines Anhui University of Science and TechnologyHuainan 232001China State Key Laboratory for Geomechanics&Deep Underground Engineering China University of Mining and Technology(Beijing)Beijing 100083China Key Laboratory of Xinjiang Coal Resources Green Mining Ministry of EducationXinjiang Institute of EngineeringUrumqi 830023China

The mechanical behavior of cemented gangue backfill materials(CGBMs)is closely related to particle size distribution(PSD)of aggregates and properties of cementitious ***,the true triaxial compression tests,CT scanning,SEM,and EDS tests were conducted on cemented gangue backfill samples(CGBSs)with various carbon nanotube concentrations(P_(CNT))that satisfied fractal theory for the PSD of *** mechanical properties,energy dissipations,and failure mechanisms of the CGBSs under true triaxial compression were systematically *** results indicate that appropriate carbon nanotubes(CNTs)effectively enhance the mechanical properties and energy dissipations of CGBSs through micropore filling and microcrack bridging,and the optimal effect appears at P_(CNT)of 0.08wt%.Taking PSD fractal dimension(D)of 2.500 as an example,compared to that of CGBS without CNT,the peak strength(σ_(p)),axial peak strain(ε_(1,p)),elastic strain energy(Ue),and dissipated energy(U_(d))increased by 12.76%,29.60%,19.05%,and90.39%,***,excessive CNTs can reduce the mechanical properties of CGBSs due to CNT agglomeration,manifesting a decrease inρ_(p),ε_(1,p),and the volumetric strain increment(Δε_(v))when P_(CNT)increases from 0.08wt%to 0.12wt%.Moreover,the addition of CNTs improved the integrity of CGBS after macroscopic failure,and crack extension in CGBSs appeared in two modes:detour and pass through the ***σ_(p)and U_(d)firstly increase and then decrease with increasing D,and porosity shows the opposite ***ε_(1,p)andΔε_(v)are negatively correlated with D,and CGBS with D=2.150 has the maximum deformation parameters(ε_(1,p)=0.05079,Δε_(v)=0.01990)due to the frictional slip effect caused by coarse *** increasing D,the failure modes of CGBSs are sequentially manifested as oblique shear failure,"Y-shaped"shear failure,and conjugate shear failure.

关键词： cemented gangue backfill materials particle size distribution true triaxial compression test carbon nanotubes mechanical properties failure modes

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carbon nanotubes as outstanding targets for laser-driven particle acceleration

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Nano Research 2023年第11期16卷 12572-12578页

作者： Wenjun Ma State Key Laboratory of Nuclear Physics and Technology and Key Laboratory of HEDP of the Ministry of EducationCAPTPeking UniversityBeijing 100871China Beijing Laser Acceleration Innovation Center Beijing 101400China Institute of Guangdong Laser Plasma Technology Guangzhou 510540China

Under the irradiation of ultraintense laser pulses,targets made of gas,solid,or artificial materials can generate high-energy electrons,ions,and X-rays comparable to conventional accelerators or national light source *** and creating high-performance targets are the core problems for laser *** and nanomaterials can help to build ideal targets that do not exist in *** paper reviews the advances in exploiting carbon nanotubes as outstanding targets for laser-driven particle acceleration in memory of *** Xie,the inventor of the fabrication *** hope that the successful implementation of such targets in enhanced ion acceleration,high-efficiency electron acceleration,and brilliant X-ray generation could attract more interdiscipline interests and promote the development of this field.

关键词： laser acceleration laser-driven ion acceleration X-ray sources carbon nanotubes

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carbon nanotubes decorated FeNi/nitrogen-doped carbon composites for lightweight and broadband electromagnetic wave absorption

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Journal of Materials Science & Technology 2023年第27期158卷 207-217页

作者： Juhua Luo Wenxing Yan Xiaopeng Li Pengcheng Shu Jie Mei Yafan Shi School of Materials Science and Engineering Yancheng Institute of TechnologyYancheng 224051China Jiangsu Provincial Key Laboratory of Eco-Environmental Materials Yancheng Institute of TechnologyYancheng 224051China

Magnetic-dielectric component modulation and heterogeneous interface engineering were considered as an effective strategy for designing lightweight and broadband electromagnetic wave(EMW)***,a series of carbon nanotubes(CNTs)decorated core-shell nitrogen-doped carbon(CNTs/FeNi/NC)composites were successfully fabricated via the carbonization of CNTs/NiFe_(2)O_(4)/PDA precursors obtained by hydrothermal and polymerization *** EMW absorption(EMWA)properties of CNTs/FeNi/NC composites were explored by varying the CNTs *** the CNTs content was 15%,the minimum reflection loss(RL_(min))value was-51.13 dB at 9.52 GHz and the corresponding effective absorption band-width(EAB)value was 2.96 GHz(8.96-11.12 GHz)at 2.5 ***,the maximum EAB value can reach up to 4.64 GHz(12.80-17.44 GHz)at 1.7 *** excellent EMW attenuation capability resulted from the enhanced conductive loss,polarization loss,magnetic loss,and improved impedance *** work offers a novel reference for designing lightweight and broadband EMWA materials.

关键词： carbon nanotubes Nano-heterogeneous interface engineering Electromagnetic wave absorption Impedance matching

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carbon nanotubes/graphitic carbon nitride nanocomposites for all-solid-state supercapacitors

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Science China(Technological Sciences) 2020年第9期63卷 1714-1720页

作者： LU Chao CHEN Xi Deparment of Earth and Environmental Engineering Columbia UniversityNew York 10027USA School of Chemical Engineering.Northwest University Xi'an 710069China

All-solid-state supercapacitors with high power density and working stability are high-efficiency energy storage devices for smart electronic equipment. Developing electrode materials with fast ions and electrons transport is critical to improving the energy storage capability. Here, we report carbon nanotubes/graphitic carbon nitride nanocomposites with large specific surface area, porous structure and high electrical conductivity toward high-performance supercapacitors. The large surface area with porosity provides reservoir for ion accommodation during charge-discharge processes, and the high conductivity facilitates electrons and ions transport. Furthermore, nitrogen sites in electrodes contribute significant pseudocapacitance for supercapacitors. The nanocomposites based device gives a high specific capacity of 148 F g^(–1) at current density of 1 A g^(–1) with good rate capability from 1 to 10 A g^(–1). Additionally, the device displays excellent working stability with capacitance retention of 93%even after 10000 cycles at 1 A g^(–1) under 0.8 V in air. This study sheds light on design of nanocomposites with highly efficient charge transfer and will accelerate development of next-generation solid state energy devices.

关键词： carbon nanotubes graphitic carbon nitride nanocomposite nitrogen doping high capacity supercapacitors

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carbon nanotubes Supported Pt-Ru-Ni as Methanol Electro-Oxidation Catalyst for Direct Methanol Fuel Cells

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Journal of Natural Gas Chemistry 2007年第2期16卷 162-166页

作者： Fei Ye Shengzhou Chen Xinfa Dong Weiming Lin School of Chemical and Energy Engineering South China University of Technology Guangzhou 510640 Guangdong China School of Chemistry and Chemical Engineering Guangzhou University Guangzhou 510006 Guangdong China

carbon nanotubes （CNTs） supported Pt-Ru and Pt-Ru-Ni catalysts were prepared by chemical reduction of metal precursors with sodium borohydride at room temperature. The crystallographic properties and composition of the catalysts were characterized by X-ray diffraction （XRD） and energy dispersive X-ray （EDX） analysis, and the catalytic activity and stability for methanol electro-oxidation were measured by electrochemical impedance spectroscopy （EIS）, linear sweep voltammetries （LSV）, and chronoamperometry （CA）. The results show that the catalysts exhibit face-centered cubic （fcc） structure. The particle size of Pt-Ru-Ni/CNTs catalyst is about 4.8 nm. The catalytic activity and stability of the Pt-Ru-Ni/CNTs catalyst are higher than those of Pt-Ru/CNTs catalyst.

关键词： carbon nanotubes Pt-Ru-Ni/CNTs methanol electro-oxidation direct methanol fuel cells

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carbon nanotubes in Biology and Medicine:In vitro and in vivo Detection,Imaging and Drug Delivery

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Nano Research 2009年第2期2卷 85-120页

作者： Zhuang Liu Scott Tabakman Kevin Welsher Hongjie Dai Department of Chemistry Stanford UniversityCA 94305USA

carbon nanotubes exhibit many unique intrinsic physical and chemical properties and have been intensively explored for biological and biomedical applications in the past few *** this comprehensive review,we summarize the main results from our and other groups in this field and clarify that surface functionalization is critical to the behavior of carbon nanotubes in biological *** detection of biological species with carbon nanotubes can be realized after surface passivation to inhibit the non-specific binding of biomolecules on the hydrophobic nanotube *** nanosensors based on nanotubes provide a label-free approach to biological ***-enhanced Raman spectroscopy of carbon nanotubes opens up a method of protein microarray with detection sensitivity down to 1 fmol/*** vitro and in vivo toxicity studies reveal that highly water soluble and serum stable nanotubes are biocompatible,nontoxic,and potentially useful for biomedical *** vivo biodistributions vary with the functionalization and possibly also size of nanotubes,with a tendency to accumulate in the reticuloendothelial system(RES),including the liver and spleen,after intravenous *** well functionalized,nanotubes may be excreted mainly through the biliary pathway in *** nanotube-based drug delivery has shown promise in various In vitro and in vivo experiments including delivery of small interfering RNA(siRNA),paclitaxel and ***,single-walled carbon nanotubes with various interesting intrinsic optical properties have been used as novel photoluminescence,Raman,and photoacoustic contrast agents for imaging of cells and *** multidisciplinary explorations in this field may bring new opportunities in the realm of biomedicine.

关键词： carbon nanotubes biomedical applications surface functionalization biosensor drug delivery biomedical imaging

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carbon nanotubes-based Drug Delivery to Cancer and Brain

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Journal of Huazhong University of Science and Technology(Medical Sciences) 2017年第5期37卷 635-641页

作者：郭晴沈先涛李媛媛徐顺清 Key Laboratory of Environment and Health(HUST) Ministry of Education & Ministry of Environmental Protection and State Key Laboratory of Environmental Health School of Public Health Tongji Medical College Huazhong University of Science and Technology

Current treatments for cancer and the central nervous system diseases are limited, partly due to the difficulties posed by the insolubility, poor distribution of drugs among cells and lack of selectivity of drugs, the inability of drugs to cross cellular barriers and blood brain barrier（BBB）. carbon nanotubes（CNTs） possess many distinct properties including good electronic properties, remarkably penetrating capability on the cell membrane, high drug-loading and pH-dependent therapeutic unloading capacities,thermal properties, large surface area and easy modification with molecules, which render them as a suitable candidate to deliver drugs to cancer and brain. CNTs as a drug delivery could achieve a high efficacy, enhance specificity and diminish side effects. Whereas CNTs have been primarily employed in cancer treatment, a few studies have focused on the treatment and diagnosis of the central nervous system diseases using CNTs. Here, we review the current progress of in vitro and in vivo researches of CNTs-based drug delivery to cancer involving CNTs-based tumor-targeted drug delivery systems（DDS）, photodynamic therapy（PDT） and photothermal therapy（PTT）. Meanwhile, we also review the current progress of in vitro and in vivo researches of CNTs-based drug delivery to brain.

关键词： carbon nanotubes blood brain barrier drug delivery cancer brain

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carbon nanotubes for electronics manufacturing and packaging:from growth to integration

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Advances in Manufacturing 2013年第1期1卷 13-27页

作者： Johan Liu Di Jiang Yifeng Fu Teng Wang Department of Microtechnology and Nanoscience Chalmers University of Technology Key Laboratory of Advanced Display and System Applications and SMIT Center School of Automation and Mechanical Engineering Shanghai University SHT Smart High Tech AB Fysikgrnd 3412 96 GothenburgSweden

carbon nanotubes （CNTs） possess excellent electrical, thermal and mechanical properties. They are light in weight yet stronger than most of the other materials. They can be made both highly conductive and semi-conductive. They can be made from nano-sized small catalyst particles and extend to tens of millimeters long. Since CNTs emerged as a hot topic in the early 1990s, numerous research efforts have been spent on the study of the various properties of this new material. CNTs have been proposed as alternative materials of potential excellence in a lot of applications such as electronics, chemical sensors, mechanical sensors/actuators and composite materials, etc. This paper reviews the use of CNTs particularly in electronics manufacturing and packaging field. The progresses of three most important applications, including CNT-based thermal interface materials, CNT-based interconnections and CNT-based cooling devices are reviewed. The growth and post-growth processing of CNTs for specific applications are introduced and the tai- loring of CNTs properties, i.e., electrical resistivity, thermal conductivity and strength, etc., is discussed with regard to specific application requirement. As the semiconductor industry is still driven by the need of getting smaller and faster, CNTs and the related composite systems as emerging new materials are likely to provide the solution to the future challenges as we make more and more complex electronics devices and systems.

关键词： carbon nanotubes Electronicsmanufacturing Electronics packaging - Growth Integration

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Diameter-dependent photoelectric performances of semiconducting carbon nanotubes/perovskite heterojunctions

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Nano Research 2023年第11期16卷 12662-12669页

作者： Yayang Yu Wenke Wang Xiao Li Linhai Li Shilong Li Xiaojun Wei Weiya Zhou Jing Lin Yang Huang Huaping Liu School of Materials Science and Engineering Hebei Key Laboratory of Boron Nitride Micro and Nano MaterialsHebei University of TechnologyTianjin 300130China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China Center of Materials Science and Optoelectronics Engineering School of Physical SciencesUniversity of Chinese Academy of SciencesBeijing 100049China Beijing Key Laboratory for Advanced Functional Materials and Structure Research Beijing 100190China Songshan Lake Materials Laboratory Dongguan 523808China

The heterojunction of single-wall carbon nanotubes(SWCNTs)and perovskite quantum dots(QDs)shows excellent photodetection performances due to the combination of the advantages of high carrier mobility of SWCNTs and high absorption coefficient of perovskite ***,the band structure of a SWCNT is determined by its atomic arrangement *** the structure of SWCNTs affects the photoelectric performance of the composite film remains ***,we systematically explored the diameter effect of SWCNTs with different bandgaps on the photodetection performances of SWCNTs/perovskite QDs heterojunction films by integrating semiconducting SWCNTs(s-SWCNTs)with different diameters with CsPbBr3 *** results show that with an increase in diameter of s-SWCNTs,the heterojunction exhibits increasing responsivity(R),detectivity(D*),and faster response *** great improvement in the optoelectronic performances of devices should be attributed to the higher carrier mobility of larger-diameter SWCNT films and the increasing built-in electric field at the heterojunction interfaces between larger-diameter SWCNTs and CsPbBr3 QDs,which enhances the separation of the photogenerated excitons and the transport of the resulted carriers in SWCNT films.

关键词： carbon nanotubes perovskite quantum dots diameter effect responsivity detectivity

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