Plane Spacing Research Articles

A non-fouling multilayer structure based on LAPONITE®/PEG-Brushes showing high stiffness and hardness

In this paper we report on the fabrication of inorganic/organic nanocomposite films consisting of alternating layers of LAPONITE® / (3-Aminopropyl)trimethoxysilane (APTMS)/ antifouling poly(oligo ethyleneglycol)-methylether-methacrylate (POEGMA) brushes using a simple sequence of dip-coating and surface-initiated atom transfer radical polymerization. The interaction between the clay material and APTMS proceeds in the solution via “broken” edge grafting on the LP nanoclay and causes a measurable increase of the basal plane spacing. For the next sequence of surface-initiated atom transfer radical polymerization (ATRP) the aminofunctional groups of APTMS serve as a linkage unit to attach the functional molecules of ATRP- initiator for the fabrication of non-fouling PEG-based polymer brushes.Based on layer morphology, the anchoring of a subsequent nanocomposite layer of LP/APTMS on grafted POEGMA brushes is thought to occur via infiltration/incorporation of the silanized LP platelets into the swelling thin polymer brush layer. These platelets mediate then the next polymerization sequence, and this results in nanocomposite-polymer layer strata with a thickness of up to 4μm. This particular structure is endowed with remarkable mechanical properties, as revealed from nanoindentation measurements. For instance, E-Modulus values in excess of 20GPa, and Hardness of at least 600 MPa were obtained throughout the multilayer nanocomposite. These values are unsurpassed by non-cross linked LBL films. The non-fouling properties of the nanocomposite are demonstrated using adherent bacteria cultures. In contrast to non-coated glass slides, no adherent bacteria could be found on the surface of the coated substrates.

The effect of strain on interphase precipitation characteristics in a Ti-Mo steel

In the current study, the effect of deformation in the non-recrystallization region on the characteristics of interphase precipitation was extensively studied in a Ti-Mo steel. The present observation revealed a novel mechanism affecting the interphase precipitation characteristics during an austenite-to-ferrite transformation, as a result of the thermomechanical processing. The hot deformation primarily led to the fragmentation of an austenite grain interior through the formation of elongated dislocation walls, locally deviating the orientation within a grain. Relatively coarse strain-induced precipitates were initially formed on the dislocation walls upon cooling. During the isothermal austenite to ferrite transformation, the interphase precipitation took place on the advancing austenite-ferrite interface front. This was similar to the strain-free condition, though the alignment of planar rows was abruptly altered while encountering the microband walls due to local orientation change at either side of a given microband. In addition, the deformation reduced the planar spacing of interphase precipitates up to a given strain (i.e., ∼0.3), beyond which it became nearly constant. This was due to the saturation of dislocation density within austenite above a certain strain and/or the consumption of alloying elements through the strain-induced precipitation formed on the microbands prior to the austenite to ferrite transformation.

Direct Evaluation of Local Dynamic Viscoelastic Properties of Isotactic Polypropylene Films Based on a Dynamic μ-Beam X-ray Diffraction Method.

The local mechanical properties of crystalline polymer were evaluated using synchrotron radiation X-ray diffraction with 10 μm lateral resolution. A nonoriented isotactic polypropylene (iPP) film with isolated spherulites in a crystallized matrix was used as a model sample. In situ wide-angle X-ray diffraction (WAXD) measurement was performed on the iPP film using a microbeam synchrotron radiation X-ray under sinusoidal strain. The lattice spacing of the crystal planes increased and decreased in response to the applied sinusoidal strain. Local dynamic viscoelastic functions (dynamic storage and loss moduli (E' and E″)) were calculated at room temperature from the relationship between the calculated applied stress and the response strain obtained by dynamic μ-beam WAXD measurement inside and outside of the spherulites. The E' values inside and outside of spherulite obtained from the change in spacing of the (110) plane were 1.8 and 1.1 GPa, respectively. Furthermore, the E' value inside of spherulite obtained from the change in spacing of the (1̅13) plane was 6.0 GPa. These values can be explained by the deformation of crystallite, which depends on the direction of crystal planes. The results obtained here revealed that synchrotron radiation X-ray diffraction measurement gives not only structural information but also the local mechanical properties of the materials E'.

Zn3P2 Twinning Superlattice Nanowires Grown on Fluorine-Doped Tin Oxide Glass Substrates

Zn3P2 twinning superlattice nanowires with diameters of 100–300 nm were grown under Sn catalysis on fluorine-doped tin oxide glass by physical vapor transport. The nanowires grew along the [101] direction with nonparallel {101} side facets. The Zn3P2 twinning superlattices had no noticeable crystallographic defects except periodic twin defects. A nonlinear relationship between the twin plane spacing and nanowire diameter was observed. The twin plane formation energy (4.0 × 10–2 to 4.3 × 10–2 J/m2) was estimated by fitting the relationship from the nucleation model with a hexagonal nucleus with monolayer height at the triple-phase boundary. The unexpected nonlinear behavior despite the relatively high twin plane formation energy was ascribed to the strong interaction of P atoms dissolved in Sn droplets with the growth interface. P atoms in the droplets may have acted as a surfactant to reduce the liquid–solid surface energy.

Temporal Characteristic of the Mesoscale Plasma Flow Perturbations in the High‐Latitude Ionosphere

AbstractSpatial and temporal characteristics of flow perturbations in the high‐latitude ionosphere are important considerations for energy deposition from the magnetosphere. In this study, we examine the temporal characteristics of plasma flow perturbations with spatial scales between 100 and 400 km from two consecutive Defense Meteorological Satellite Program (DMSP) passes that have about the same orbital plane and sample time spacing between a few seconds and 20 min during local summer seasons in 2007‐2015. The temporal characteristics of mesoscale flow perturbations are described by rise and saturation times for growth and decay derived from the changes in magnitude of perturbations and the time separation between consecutive samples. Observations suggest that the rise times for both growth and decay are shorter for small spatial scales (1–2 min, 100–200 km) and longer for large spatial scales (3–5 min, 200–400 km). The saturation time for decay is ~10 min for small scales and ~20 min for large scales. The growth saturation time is about 5–10 min for both scale sizes. These characteristic times for growth are always shorter than the decay times. If the difference in these characteristic times between growth and decay is produced by motion of a perturbation with the background flow through the observed volume, then a longitudinal scale size of 750 km or 1.5 hr of local time is implied.

Raman spectroscopy analysis of new copper‐cysteamine photosensitizer

AbstractRaman spectroscopy and several microstructure analysis techniques have been used to better characterize recently synthesized copper‐cysteamine Cu3Cl(SR)2, where R = CH2CH2NH2. Nanoparticles of this new copper‐cysteamine have been identified as having potential applications in radiation detection and cancer treatment because of the fact that they can be activated by light, X‐rays, ultrasound, and microwave radiation to produce reactive oxygen species. Three samples were grown under different conditions, and their microstructure was examined by using Raman spectroscopy, Fourier transform infrared, scanning electron microscopy, energy dispersive X‐ray scattering, and X‐ray diffraction. The Raman spectroscopy and Fourier transform infrared measurements identify numerous Raman active and infrared absorption bonds with wavenumbers ranging from 200 to 3,500 cm−1. Scanning electron microscopy scans show well‐faceted crystals varying in size from approximately 10 nm to 4 μm, energy dispersive X‐ray scattering measurements identify relative elemental composition (C = 48%, N = 37.5%, S = 5%, Cl = 2.6%, Cu = 7%), X‐ray diffraction data show the crystal plane spacing varies from 0.8454 to 0.8616 nm. The microstructure observed for the three samples is consistent with variations in the growth conditions.

Ferroelastic twin reorientation mechanisms in shape memory alloys elucidated with 3D X-ray microscopy

Three-dimensional (3D) X-ray diffraction methods were used to analyze the evolution of the load-induced rearrangements of monoclinic twin microstructures within bulk nickel–titanium specimens in 3D and across six orders of magnitude in length scales: changes in lattice plane spacings and orientations at the nanoscale, growth and nucleation of martensite twin variants at the microscale, and localization of plastic strain into deformation bands at the macroscale. Portions of the localized deformation bands were reconstructed in situ and in 3D. Analyses of the data elucidate the sequence of twin rearrangement mechanisms that occur within the propagating localized deformation bands, connect these mechanisms to the texture evolution, and reveal the effects of geometrically necessary lattice curvature across the band interfaces. The similarities between shear bands and localized deformation bands in twin reorientation are also discussed. These findings will guide future researchers in employing twin rearrangement in novel multiferroic technologies, and they demonstrate the strength of 3D, multiscale, in situ experiments to improve our understanding of complicated material behaviors and to provide opportunities to advance our abilities to model them.

Lattice Distortion and Phase Stability of Pd-Doped NiCoFeCr Solid-Solution Alloys.

In the present study, we have revealed that (NiCoFeCr)100−xPdx (x= 1, 3, 5, 20 atom%) high-entropy alloys (HEAs) have both local- and long-range lattice distortions by utilizing X-ray total scattering, X-ray diffraction, and extended X-ray absorption fine structure methods. The local lattice distortion determined by the lattice constant difference between the local and average structures was found to be proportional to the Pd content. A small amount of Pd-doping (1 atom%) yields long-range lattice distortion, which is demonstrated by a larger (200) lattice plane spacing than the expected value from an average structure, however, the degree of long-range lattice distortion is not sensitive to the Pd concentration. The structural stability of these distorted HEAs under high-pressure was also examined. The experimental results indicate that doping with a small amount of Pd significantly enhances the stability of the fcc phase by increasing the fcc-to-hcp transformation pressure from ~13.0 GPa in NiCoFeCr to 20–26 GPa in the Pd-doped HEAs and NiCoFeCrPd maintains its fcc lattice up to 74 GPa, the maximum pressure that the current experiments have reached.

Silicon saturation coefficient changes in hydrogarnets during the Bayer process with lime addition

The relationship between the silicon saturation coefficient of hydrogarnets and Bayer reaction parameters was studied. The peak position, crystal plane spacing, and cell edge length of typical hydrogarnet patterns were calculated to find the key factors influencing the relationship. The results showed that the crystal face (420) is the optimal garnet growth direction during hydration and crystal growth along the faces (521) and (611) were not affected significantly by the varying experimental conditions. The reaction temperature significantly influenced the silicon saturation coefficient of hydrogarnets. The silicon saturation coefficient of hydrogarnets increased from 0.2 to about 1.0 in the temperature range of 30–270 °C and a rapid expansion process was observed in the temperature range of 120–150 °C. Moreover, the reaction time, alumina concentration, and C / S were shown to be less important factors. Averaging the results obtained by the 3 methods was shown suitable for calculating the SiO 2 saturation coefficient of hydrogarnets. The calculated results of the Al 2 O 3 and SiO 2 contents matched the actual ones. However, the actual SiO 2 content was about 10 % less than the calculated one for SiO 2 saturation coefficients higher than 1. The average calculation results of “Peak position method”, “Crystal plane spacing method” and “Cell edge length method” match the actual contents well, but the actual SiO 2 content is about 10% lesser than the calculation contents when the SiO 2 saturation coefficient is higher than 1. The residue composition can be predicted by this method.

The Planar Cordon – new planting systems concepts to improve light utilisation and physiological function to increase apple orchard yield potential

Contemporary high density apple orchards, although very productive in historical terms, are yield-limited at 100-120 t ha(-1) because their maximum fractional utilisation of sunlight is only circa 60% of total seasonally-available radiation. Previous research in New Zealand proposed a theoretical potential productivity of 169 t ha(-1) for late-season cultivars if orchard light interception of 90% could be achieved. A major constraint to improving light interception by planting systems is the allocation of space between rows. Any increase in light utilisation will require closer rows and/or inclined canopies. New planting systems to increase light interception by reducing inter-row distances, whilst achieving adequate within-canopy irradiance for high quality fruit, are being studied in New Zealand. Rows spaced at 1.5 to 2 m apart require new tree forms with narrow planar canopies for both eco-physiological and practical reasons. Tree architecture comprises two opposing, not-quite horizontal cordon leaders along the row, each subtending five vertical non-branched fruiting stems, 30 cm apart, to create narrow planar trees, 3 m long, less than 0.5 m wide, and with an anticipated height of 3-3.5 m. Four cultivars in a first prototype, planted at 1667 (2 m inter-row) and 2222 (1.5 m inter-row) trees ha(-1) yielded from 9 to 29 t ha-1 in their second year. Fractional light interception of 2- and 3-year-old plantings characterised young-tree planar cordon canopy row spacing effects, in comparison with a same-aged 1.5×3.5 m tall spindle system. Productivity traits from 3-year-old systems planted at 1.5 and 2 m row spacing and between vertical and narrow vee planar canopy variants of two-year-old planting systems indicate productivity gains over the three-dimensional tall spindle canopy configuration. In additional to light interception, these results also indicate that growth processes regulating the allocation fate of annual growth resources are important factors determining the productivity potential of apple orchards. Evidence for plasticity of resource partitioning into fruit development in response to different manipulations of tree architecture are drawn from our studies of new planar cordon systems and with conventional tall spindle planting systems.

Experimental and Numerical Study of the Effects of Layer Orientation on the Mechanical Behavior of Shale

Bedding planes are common in shale and significantly affect its mechanical behavior. In this paper, the main focus is investigating the effects of layer orientation on the mechanical behavior of shale under different confining pressures through physical experiments and numerical simulations. First, confining pressure tests were performed to investigate the parameter differences of specimens with vertical bedding planes (SVBPs) and specimens with horizontal bedding planes (SHBPs). Second, the statistical results of the length and spacing of bedding planes were employed to construct the simulation model. Third, the microparameters of the proposed model were confirmed with the results obtained from physical experiments, in which four key factors including deviatoric stress versus axial strain curve, peak strength, Young’s modulus and failure mode were all used to calibrate the feasibility and reliability of the numerical simulation. Finally, a systematic simulation was conducted to investigate the effects of layer orientation on the mechanical behavior of shale. The results show that the mechanical parameters (deviatoric stress vs. axial strain curve, peak strength, Young’s modulus, cohesion and internal friction angle) are greatly affected by layer orientation. Tensile cracking of the rock matrix is dominant in specimens with both vertical and horizontal bedding planes. The crack initiation threshold (CIT) of SVBPs is smaller than that of SHBPs, but the crack damage threshold (CDT) is similar. The percentages of CIT and CDT are nearly unchanged under different confining pressures in both types of specimens. The conformity between the simulation results and physical experiment results suggests that the research method proposed in this study can advance the understanding of rock mass mechanical behavior.

Numerical Tests Research on Mechanical Parameters of Rockmass considering Structural Plane Combination Characteristics

It is essential to determine rockmass mechanical parameters in stability assessment. The structural z is the main factor in this regard, and we know little about the relationship between mechanical parameters and multiple structure planes. In this paper, we have conducted a series of numerical tests to obtain mechanical parameters for a dam foundation in Southwest China. The biaxial numerical test was performed based on the discrete element method. This numerical test considers the spacing, types, dip angles, and size effect. We established a relationship of mechanical parameters between small size lab samples and large size field samples. We forecasted the strength parameters for a spillway slope in Southwest China. The dip angle has a significant effect on the slope strength and stability. In this case, the rockmass fracture stress-dip angle curve forms a U-shaped distribution. The X-shaped double structure plane demonstrates severe strength weakening relative to a single structure plane. As structure plane spacing reaches a certain level, its influence on rockmass strength diminishes. The elementary volume of the rockmass for dam foundation analysis is about 4 m × 4 m × 4 m.

Calcined Mussel Shell Powder (CMSP) via Modification with Surfactants: Application for Antistatic Oil-Removal.

Biomass is known to efficiently adsorb pollutants from wastewater. In this paper, we demonstrated that a new antistatic oil-cleaning material can be prepared and assembled by using two surfactants, alkyl polyglucosides (APG) and dimethyl octadecyl hydroxy ethyl ammonium nitrate (SN), to modify calcined mussel shell powder (CMSP) through a two-step hydrotherm-assisted adsorption. The pore size and structure of CMSP was measured by BET and a contact angle meter was used to characterize the surface wetting ability. XRD, FTIR, XPS, SEM, TEM, and HRTEM were employed to determine the surface structure of CMSP modified by surfactants APG and SN (MMO). In order to further characterize properties of the surface morphology and crystal structure, the HRTEM was employed to show that the MMO surface had a single crystal structure: calcite, with a crystal plane spacing of 0.2467 nm. The surface of MMO appeared to be fluffy and disperse. The antistatic and degreasing ability of as-prepared samples (MMO) was evaluated by a ZC-36 high resistance meter and BD-457 whiteness meter. The results showed that when the calcination temperature of CMSP reached 1000 °C, and the addition amount of APG and SN was 0.8 g and 0.16 g, it had an optimum antistatic effect with a surface resistivity (Rs) of 1.35 × 108 Ω, and a detergency rate to oil of 17.35%. This study aims to embrace a green solution to reduce environmental pressure and make use of waste, which is of great significance to environmental protection.

Van der Waals interfaces in epitaxial vertical metal/2D/3D semiconductor heterojunctions of monolayer MoS2 and GaN

A promising approach for high speed and high power electronics is to integrate two-dimensional (2D) materials with conventional electronic components such as bulk (3D) semiconductors and metals. In this study we explore a basic integration step of inserting a single monolayer MoS2 (1L-MoS2) inside a Au/p-GaN junction and elucidate how it impacts the structural and electrical properties of the junction. Epitaxial 1L-MoS2 in the form of triangle domains are grown by powder vaporization on a p-doped GaN substrate, and the Au capping layer is deposited by evaporation. Transmission electron microscopy (TEM) of the van der Waals interface indicates that 1L-MoS2 remained distinct and intact between the Au and GaN and that the Au is epitaxial to GaN only when the 1L-MoS2 is present. Quantitative TEM analyses of the van der Waals interfaces are performed and yielded the atomic plane spacings in the heterojunction. Electrical characterization of the all-epitaxial, vertical Au/1L-MoS2/p-GaN heterojunctions enables the derivations of Schottky barrier heights (SBH) and drawing of the band alignment diagram. Notably, 1L-MoS2 appears to be electronically semi-transparent, and thus can be considered as a modifier to the Au contact rather than an independent semiconductor component forming a pn-junction. The I–V analysis and our first principles calculation indicated Fermi level pinning and substantial band bending in GaN at the interface. Lastly, we illustrate how the depletion regions are formed in a bipolar junction with an ultrathin monolayer component using the calculated distribution of the charge density across the Au/1L-MoS2/GaN junction.

N-doped C-encapsulated scale-like yolk-shell frame assembled by expanded planes few-layer MoSe2 for enhanced performance in sodium-ion batteries

To meet the pressing needs of fast development of energy and environmental science, sodium ion batteries (SIBs) are considered as the promising novel generation of power storage system, due to abundant reserves and low price of sodium sources. In this work, N-doped C-encapsulated scale-like yolk-shell structured MoSe2-C materials assembled by expanded (002) planes few-layer MoSe2 nanosheets are successfully synthesized by a facile general strategy. The few-layer crystal fringes are no more than 4 layers. Notably, the interlayer spacing of (002) planes is expanded to 1.15 nm, which is larger than its intrinsic value of pristine MoSe2 (0.64 nm). Particularly, the few-layer nanosheets with expanded (002) planes are spaced-restricted growing in the inner wall and the surface of hollow carbon frame and form scale-like yolk-shell hybrid MoSe2-C structure. When evaluated as anode for SIBs, the MoSe2-C materials show ultra-long cycling life, maintaining 378 mA h g−1 over 1000 cycles at 3 A g−1. It also exhibits outstanding rate capability and the Coulombic efficiencies for all the rate performance reaching more than 98.3% except the first one. The expanded (002) planes, 2D fewer-layer nanosheets and unique N-doped C-encapsulated scale-like yolk-shell frame are responsible for the enhanced electrochemical performance.

Deposition Process and Properties of Electroless Ni-P-Al2O3 Composite Coatings on Magnesium Alloy

To improve the corrosion resistance and wear resistance of electroless nickel-phosphorus (Ni-P) coating on magnesium (Mg) alloy. Ni-P-Al2O3 coatings were produced on Mg alloy from a composite plating bath. The optimum Al2O3 concentration was determined by the properties of plating bath and coatings. Morphology growth evolution of Ni-P-Al2O3 composite coatings at different times was observed by using a scanning electronic microscope (SEM). The results show that nano-Al2O3 particles may slow down the replacement reaction of Mg and Ni2+ in the early stage of the deposition process, but it has almost no effect on the rate of Ni-P auto-catalytic reduction process. The anti-corrosion and micro-hardness tests of coatings reveal that the Ni-P-Al2O3 composite coatings exhibit better performance compared with Ni-P coating owing to more appropriate crystal plane spacing and grain size of Ni-P-Al2O3 coatings. Thermal shock test indicates that the Al2O3 particles have no effect on the adhesion of coatings. In addition, the service life of composite plating bath is 4.2 metal turnover, suggesting it has potential application in the field of magnesium alloy.

A IR UWB Timed-Array Radar Based on 16-Channel Transmitter and Sampling Capacitor Reused Receiver

A ${4\times 4}$ impulse radio (IR) ultra-wide band (UWB) timed-array radar is proposed in this brief based on 16-channel all-digital transmitter and sampling capacitor reused receiver. 3-D beamforming is achieved by the 16-channel ( ${4\times 4}$ ) planar low power IR UWB beamforming transmitter. UWB receiver adopts energy detection and reuses the integrating capacitor as C-DAC within an 8-bit SAR ADC to save area and power consumption. Fabricated in 65-nm CMOS technology, the whole UWB radar occupies an active core area of 4.2 mm $^{{2}}$ . Delay range of 1.2 ns with 10 ps resolution is achieved, corresponding to 90° radar scanning range with 3° resolution when the ${4\times 4}$ planar array antenna spacing is 6 cm.

Ion irradiation-induced novel microstructural change in silicon carbide nanotubes

In-situ TEM was used to observe the microstructural changes of SiC nanotubes under ion irradiation, and the results are significantly different from those of bulk SiC. The nanotubes possess better resistance against amorphization by irradiation, having a higher critical irradiation dose at room temperature. At room temperature, both the outer and inner diameters of the SiC nanotubes increase during irradiation till complete amorphization, and decrease afterwards. The lattice plane spacing of SiC crystals increases with increasing ion fluence due to the increasing disorder. At 700 °C, both the inner and outer diameters change very little during ion irradiation; and the lattice plane spacing decreases slightly, which is not consistent with previous studies of bulk SiC. The reason is that, in the nanotubes, the number of inherent defects that buffer the residual stress in it can be reduced. A new structure with smaller crystal segments is produced in the SiC grains of nanotubes to relieve the residual stress, instead of inducing structural defects and nanotube contraction. From these results, ion irradiation clearly induces novel microstructural changes in SiC nanotubes, due to the nanosizing and tubal configuration of the material.

Stability analysis and failure mechanism of the steeply inclined bedded rock masses surrounding a large underground opening

The stability of high sidewalls of large-span underground openings is a crucial geological engineering issue when the steeply inclined rock strata form a small angle to the cavern axis. In this study, detailed field surveys, in-situ tests and numerical simulations were performed to investigate the stability and failure mechanism of bedded rock masses surrounding a large underground cavern at the Wudongde hydropower station in China. First, a 3D real time, movable microseismic (MS) monitoring system was installed to analyze the stability of the underground caverns. The micro-fracturing processes and potential failure mechanism of cataclinal layered rock masses were revealed by the spatial distribution evolution and seismic source parameters (i.e., S-wave to P-wave energy ratios, namely Es/Ep) of the MS events. Then, an approach integrating the field surveys, MS monitoring and conventional measurements, is proposed for evaluating the cavern stability and identifying the high risk regions in the bedded rock masses during the staged excavations. Subsequently, discrete element method (DEM) was adopted to depict the progressive failure processes of the layered rock masses. The relationship between the failure in the upstream sidewall and the orientation and spacing of bedding planes was analysed. Abovementioned investigations allow us finally to conclude that the failure mechanism of the steeply cataclinal layered rock strata after cavern excavation is a combination of (1) the composite bending and sliding occurring in the lower part of the upstream sidewall with no supports, and (2) the opening and shear dislocation of bedding planes in the middle area. Timely supports for the rock strata at the toe of sidewall might be an effective way for preventing the occurrence of the studied failure.

Few‐Layer MoSe2 Nanosheets with Expanded (002) Planes Confined in Hollow Carbon Nanospheres for Ultrahigh‐Performance Na‐Ion Batteries

AbstractSodium‐ion batteries (SIBs) are considered as a promising alternative to lithium‐ion batteries, due to the abundant reserves and low price of Na sources. To date, the development of anode materials for SIBs is still confronted with many serious problems. In this work, encapsulation‐type structured MoSe2@hollow carbon nanosphere (HCNS) materials assembled with expanded (002) planes few‐layer MoSe2 nanosheets confined in HCNS are successfully synthesized through a facile strategy. Notably, the interlayer spacing of the (002) planes is expanded to 1.02 nm, which is larger than the intrinsic value of pristine MoSe2 (0.64 nm). Furthermore, the few‐layer nanosheets are space‐confined in the inner cavity of the HCNS, forming hybrid MoSe2@HCNS structures. When evaluated as anode materials for SIBs, it shows excellent rate capabilities, ultralong cycling life with exceptional Coulombic efficiency even at high current density, maintaining 501 and 471 mA h g−1 over 1000 cycles at 1 and 3 A g−1, respectively. Even when cycled at current densities as high as 10 A g−1, a capacity retention of 382 mA h g−1 can be achieved. The expanded (002) planes, 2D few‐layer nanosheets, and unique carbon shell structure are responsible for the ultralong cycling and high rate performance.