Thin Nanosheets Research Articles

Chemically Asymmetric Polymers Manipulate the Crystallization of Two-Dimensional Covalent Organic Frameworks to Synthesize Processable Nanosheets.

Nanosheets derived from two-dimensional covalent organic frameworks (2D COFs) are increasingly desirable in various fields. While breakthroughs in the chemical and physical delamination of 2D COFs are rising, precisely regulating the growth of the COF nanosheets has not been realized yet. Herein, we report an effective strategy of polymer-manipulated crystallization to accurately control the growth of COF nanosheets. Chemically asymmetric polyvinylpyrrolidone (PVP) is developed as the manipulator that selectively interacts with the aldehydes and (100) facet to induce anisotropic growth of COFs. The number of PVP constitutional units determines this specific interaction, leading to molecularly thin but thickness-controllable nanosheets with excellent dispersity. We process these nanosheets into robust A4-sized membranes for ultraselective molecular separation. The membrane intercalated with long-chain PVP demonstrates largely improved performance, surpassing the reported COF membranes. This work reports a strategy for anisotropically crystallizing 2D COFs to yield processable nanosheets toward practical applications.

Fostering mica exfoliation through biaxial straining strategy with monovalent cation substitution

Efficiently exfoliating mica for 2D applications remains a challenge, partly due to a lack of comprehensive design principles based on atomistic modelling of its solid mechanics. In this investigation, we employed a threefold approach: (1) Biaxial straining principles were utilized to compute electron–electron, electron–phonon, and phonon–phonon interactions at crack tips, (2) first-principles calculations were employed to explore the intrinsic relationship between muscovite mica's crystalline structure, electronic properties, ion exchange energy, and exfoliation energy, particularly in the context of various interlayer cations, and (3) experiments were conducted to corroborate the theoretical forecasts. Our findings reveal a compelling correlation between the unit cell size and the ionic radius of the interlayer cation, a phonon-dependent parameter, whereas the bandgap energy, an electron-dominant parameter, remains relatively unaffected. The electron–phonon interactions, characterized by the dihedral angle and size of the hexagonal tetrahedral ring, are influenced by the properties of the interlayer cation, crucially governing ion exchange and exfoliation energy. Significantly, mica featuring H+ interlayer cations demonstrates substantial biaxial strains, aligning with the lowest exfoliation energy, thereby facilitating efficient exfoliation. Our experimental endeavors validate that Li+ intercalation prompts a reduction in number of layers in resulted nanosheets, observed in the order of Li+ nanosheets < Na+ nanosheets < K+ nanosheets. Notably, Li+ intercalation enhances mica's exfoliation into thinner nanosheets. We propose a strategic biaxial straining approach: either replacing the interlayer cation with the smallest cation (H+) or employing larger cations within the boundaries of ion exchange. These outcomes contribute valuable insights into mica's exfoliation mechanisms and furnish a comprehensive guideline for proficiently exfoliating layer-structured materials.

A flower‐like VO2(B)/V2CTx heterojunction as high kinetic rechargeable anode for sodium‐ion batteries

AbstractVO2(B) is considered as a promising anode material for the next‐generation sodium‐ion batteries (SIBs) due to its accessible raw materials and considerable theoretical capacity. However, the VO2(B) electrode has inherent defects such as low conductivity and serious volume expansion, which hinder their practical application. Herein, a flower‐like VO2(B)/V2CTx (VO@VC) heterojunction was prepared by a simple hydrothermal synthesis method with in situ growth. The flower‐like structure composed of thin nanosheets alleviates the volume expansion, as well as the rapid Na+ transport pathways are built by the heterojunction structure, resulting in long‐term cycling stability and superior rate performance. At a current density of 100 mA g−1, VO@VC anode can maintain a specific capacity of 276 mAh g−1 with an average coulombic efficiency of 98.7% after 100 cycles. Additionally, even at a current density of 2 A g−1, the VO@VC anode still exhibited a capacity of 132.9 mAh g−1 for 1000 cycles. The enhanced reaction kinetics can be attributed to the fast Na+ adsorption and storage at interfaces, which has been confirmed by the experimental and theoretical methods. These results demonstrate that the tailored nanoarchitecture design and additional surface engineering are effective strategies for optimizing vanadium‐based anode.

Construction of Three-Dimensional Hierarchical CoSe2 Microflowers Assembled by Thin Nanosheets for High-Performance Sodium-Ion Batteries

Transition metal selenides are considered as promising anode materials for sodium-ion batteries (SIBs) due to their high capacity and low cost. However, they suffer from large volume change, serious polyselenide dissolution and sluggish reaction kinetics during charge/discharge process, resulting in poor cycling stability and low rate performance for SIBs, which further restrict their widespread application. Here, we developed carbon-free three-dimensional (3D) hierarchical microflower-shaped CoSe2 with a diameter size of approximately 2[Formula: see text][Formula: see text]m, composed of nanosheets through a one-step solvothermal method. The thin nanosheets are conducive to shortening the Na[Formula: see text] diffusion channels and relieving the volume expansion, and the 3D hierarchical microflower architecture could effectively prevent the agglomeration of nanosheets; accordingly, the resulting CoSe2 microflowers deliver a high specific capacity of 451.94[Formula: see text]mA[Formula: see text]h[Formula: see text]g[Formula: see text] even at 0.5[Formula: see text]A[Formula: see text]g[Formula: see text] after 100 cycles, compared with CoSe2 nanoparticles. This work offers an approach for designing metal selenides with high capacities and rate capability for SIBs.

Accelerated hydrogen production on atomically thin silicon nanosheets photocatalyst with unique surface adsorption chemistry

Compared with widely explored layered materials, the atomically thin layer based on nonlayered materials and their thickness dependent properties are less reported. Recently, silicon nanosheet as a novel non-layered 2D material is getting burgeoning attentions. Herein, based on density functional theory calculations, we reveal that freestanding atomically thin silicon nanosheets display favorable hydrogen evolution kinetics including small hydrogen adsorption energy and low hydrogen evolution barrier, which is distinct from multilayer silicon nanosheets and bulk silicon surface. This unique surface adsorption chemistry greatly contributes to the photocatalytic hydrogen production process. Atomically thin silicon nanosheets were further prepared by a liquid phase exfoliation approach and its cocatalyst-free photocatalytic hydrogen production performance is evaluated. The results confirmed that the photocatalytic activity of atomically thin silicon nanosheets vigorously outperforms that of bulk silicon and multilayer silicon flakes. The average hydrogen production rates of A-SiNS can reach158.8 μmol h−1 g−1, which is about 3.2 times higher than that of M-SiNS (49.5 μmol h−1 g−1). This work not only supports atomically thin silicon nanosheets as a potential candidate for photocatalytic reactions but also brings new insights into its unique physiochemical properties and applications.

Energy Harvesting Using ZnO Nanosheet-Decorated 3D-Printed Fabrics.

In this work, we decorated piezoresponsive atomically thin ZnO nanosheets on a polymer surface using additive manufacturing (three-dimensional (3D) printing) technology to demonstrate electrical-mechanical coupling phenomena. The output voltage response of the 3D-printed architecture was regulated by varying the external mechanical pressures. Additionally, we have shown energy generation by placing the 3D-printed fabric on the padded shoulder strap of a bag with a load ranging from ∼5 to ∼75 N, taking advantage of the excellent mechanical strength and flexibility of the coated 3D-printed architecture. The ZnO coating layer forms a stable interface between ZnO nanosheets and the fabric, as confirmed by combining density functional theory (DFT) and electrical measurements. This effectively improves the output performance of the 3D-printed fabric by enhancing the charge transfer at the interface. Therefore, the present work can be used to build a new infrastructure for next-generation energy harvesters capable of carrying out several structural and functional responsibilities.

2D TiS2-Nanosheet-Coated Concave Gold Arrays with Triple-Coupled Resonances as Sensitive SERS Substrates.

Herein, a hybrid substrate for surface-enhanced Raman scattering (SERS) is fabricated, which couples localized surface plasmon resonance (LSPR), charge transfer (CT) resonance, and molecular resonance. Exfoliated 2D TiS2 nanosheets with semimetallic properties accelerate the CT with the tested analytes, inducing a remarkable chemical mechanism enhancement. In addition, the LSPR effect is coupled with a concave gold array located underneath the thin TiS2 nanosheet, providing a strong electromagnetic enhancement. The concave gold array is prepared by etching silicone nanospheres assembled on larger polystyrene nanospheres, followed by depositing a gold layer. The LSPR intensity near the gold layer can be adjusted by changing the layer thickness to couple the molecular and CT resonances, in order to maximize the SERS enhancement. The best SERS performance is recorded on TiS2-nanosheet-coated plasmonic substrates, with a detectable methylene blue concentration down to 10-13m and an enhancement factor of 2.1 × 109 and this concentration is several orders of magnitude lower than that of the TiS2 nanosheet (10-11m) and plasmonic substrates (10-9m). The present hybrid substrate with triple-coupled resonance further shows significant advantages in the label-free monitoring of curcumin (a widely applied drug for treating multiple cancers and inflammations) in serum and urine.

Evaluation of the Antibacterial Effect of the Prepared Graphene Oxide Nanosheets

Because of its exceptional chemical, physical, and biological features, graphene oxide (GO) has gained great attention. The Simplified Hammer's method was used in this study to synthesize GO nanosheets, which were then characterized by UV-Vis, SEM, FTIR spectroscopy, and XRD analysis. GO's UV-Vis peak of absorption was at 230 nm. A peak of diffraction at 2θ= 10.75° was found in the XRD examination, equivalent to around 0.82 nm spacing among layers. In the FTIR spectra, characteristic peaks associated with oxygen functional groups of GO were identified. In SEM pictures, GO is made up of crumpled thin nanosheets. The diffusion in agar well procedure was applied to investigate the effect of as-prepared GO nanosheets against gram-negative "Pseudomonas aeruginosa, Salmonella typhi" and gram-positive "Enterococcus sp., Kocuria sp." Different concentrations of GO demonstrated potent antibacterial activity, with higher efficacy against gram-positive bacteria. Keywords: Graphene Oxide, Nanosheets, Antibacterial effect, XRD, SEM, FTIR.

A Novel Hierarchical Nickle Oxide Gas Sensor for Monitoring the Volatile Organic Compounds in Car Cabs

In this work, the novel NiO nanoflowers were synthesized by a hydrothermal method. Through X-ray diffraction and scanning electron microscopy, we can confirm that we have prepared high purity NiO and can observe that both nanoflowers are formed by self-assembly of thin nanosheets. Because of the novel morphology, sparsely NiO nanoflowers have a large specific surface area and form more enclosed micro-reaction chambers that make it difficult for gas to escape. Allowing gas molecules to be more widely distributed among the sparsely sample surface and obtained fully reaction time. Thus, the gas sensor based on compactly NiO nanoflowers exhibits excellent response and recovery characteristic.

H2S Sensing Characteristics of NiO Nanopetal Film

NiO is one of the most candidate materials for hydrogen sulfide (H2S) sensing due to its catalytic activity for the oxidation reaction of H2S, and high affinity of Ni in the NiO to S for the H2S adsorption. Porous NiO nanopetal film composed of interconnected thin nanosheets was grown by a facile template-free hydrothermal method at the relatively low temperature of 105 °C, and its H2S sensing characteristics was investigated in the temperature range of 25 °C to 400 °C. The NiO nanopetal film based device showed a reliable response to wide range of concentration from 10 ppm to 500 ppm H2S ambient at 400 °C. The sensor started to exhibit the responsivity to 500 ppm H2S gas at 200 °C. The maximum responsivity of the sensor with NiO nanopetals was 400% for 500 ppm H2S exposure at 300 °C. The NiO nanopetal film grown by the simple low-cost hydrothermal synthesis has high potential in applications of chemical, medical, energy, and food industries.

Electrochemical molecular intercalation and exfoliation of solution-processable two-dimensional crystals.

Electrochemical molecular intercalation of layered semiconducting crystals with organic cations followed by ultrasonic exfoliation has proven to be an effective approach to producing a rich family of organic/inorganic hybrid superlattices and high-quality, solution-processable 2D semiconductors. A traditional method for exfoliating 2D crystals relies on the intercalation of inorganic alkali metal cations. The organic cations (e.g., alkyl chain-substituted quaternary ammonium cations) are much larger than their inorganic counterparts, and the bulky molecular structure endows distinct intercalation and exfoliation chemistry, as well as molecular tunability. By using this protocol, many layered 2D crystals (including graphene, black phosphorus and versatile metal chalcogenides) can be electrochemically intercalated with organic quaternary alkylammonium cations. Subsequent solution-phase exfoliation of the intercalated compounds is realized by regular bath sonication for a short period (5-30 min) to produce free-standing, thin 2D nanosheets. It is also possible to graft additional ligands on the nanosheet surface. The thickness of the exfoliated nanosheets can be measured by using atomic force microscopy and Raman spectroscopy. Modifying the chemical structure and geometrical configuration of alkylammonium cations results in different exfoliation behavior and a family of versatile organic/inorganic hybrid superlattices with tunable physical/chemical properties. The whole protocol takes ~6 h for the successful production of stable, ultrathin 2D nanosheet dispersion in solution and another 11 h for depositing thin films and transferring them onto an arbitrary surface. This protocol does not require expertise beyond basic electrochemistry knowledge and conventional colloidal nanocrystal synthesis and processing.

Outstanding photo-thermo synergy in aerobic oxidation of cyclohexane by bismuth tungstate-bismuth oxychloride high-low heterojunction

The difficulty of achieving both high conversion rate and high selectivity is a huge challenge in the catalytic aerobic oxidation of cyclohexane. In this paper, bismuth tungstate-bismuth oxychloride (Bi2WO6-BiOCl) nanoflower heterojunctions prepared via a one-step solvothermal process were applied in the photo-thermo synergetic catalytic oxidation of cyclohexane in the dried air. With the addition of little water at different reaction temperature, the ratio of bismuth to tungsten and the mass ratio of Bi2WO6 to BiOCl can be precisely tailored in the nanoflower sphere composites with thin nanosheets. Their microscopic morphology, elemental composition, crystal structure, and photoelectrochemical characteristics were explored by different characterization methods. The Bi2WO6-BiOCl composites possessed poor photocatalytic and thermal performances with the low conversion rates of 1.43% and 2.68%, respectively. However, through the photo-thermo catalytic oxidation process, an exceptional conversion rate of 13.32% was achieved with excellent selectivity of 99.22% for cyclohexanone and cyclohexanol (KA oil) using the same Bi2WO6-BiOCl composites. This superior performance outstrips Bi2WO6 flowers, BiOCl nanosheets and Bi2WO6-BiOCl composites with other compounding ratios. The creation of a high-low heterojunction in the Bi2WO6-BiOCl composite was confirmed by band energy analysis. The opto-electronic analysis, band energy analysis, sacrifice experiments, and active radical analysis were employed to elucidate the mechanism for the exceptional photo-thermo catalytic performance in detail. This work offers an exploratory solution to the challenges of high energy consumption and the difficulty in simultaneously achieving high selectivity and high conversion rates in cyclohexane oxidation, thus holding significant value.

Alkaline metal derived secondary thermal polymerization for superior thin g-C3N4 nanosheets with efficient photocatalytic performance

The thermal polymerization controlled the thickness and composition of graphic carbon nitride (g-C3N4) to affect the photocatalytic performance. In this paper, potassium and sodium ions were firstly incorporated in bulk g-C3N4 prepared using melamine through a mechano-chemical pre-reaction. After a two-step thermal polymerization treatment at 500 and 550 °C, respectively, superior thin g-C3N4 nanosheets were created because K or Na ions implanted between g-C3N4 layers, in which activated cites were remained in the nanosheets. The results revealed that potassium or sodium ion doping revealed an important impact on the photocatalytic activity of g-C3N4. With an optimized K loading of 3%, the hydrogen evolution rate of potassium doped g-C3N4 superior thin nanosheets was 18.1 times of that of bulk g-C3N4. For the degradation of the degradation rate of Rhodamine B (Rh B), K-doped g-C3N4 sample revealed 3.8 times increase compared with pure g-C3N4. To indicate the role of alkaline metal ions, Na-doped samples were also used for H2 generation and Rh B degradation. Meanwhile, the hydrogen generation and Rh B degradation rate of sodium doped g-C3N4 nanosheets improved to 3.6 and 1.75 times higher than those of pure g-C3N4, respectively. The result suggested a mechano-chemical pre-treatment helped K and Na ions to improve the microstructure of g-C3N4 nanosheets and increase activated cites for photocatalysis.

An ultra-sensitive photoelectrochemical sensor for chlorpyrifos detection based on a novel BiOI/TiO2 n-n heterojunction

Due to widespread application of chlorpyrifos for controlling pests in agriculture, the continuous accumulation of chlorpyrifos residue has caused serious environmental pollution.The detection of chlorpyrifos is of great significance for humans and environment because it can arise a series of diseases by inhibiting acetylcholinesterase (AChE) activity. Photoelectrochemical sensing, as an emerging sensing technology, has great potential in the detection of chlorpyrifos. It is urgent that find a suitable photoelectric sensing strategy to effectively monitor chlorpyrifos. Herein, an n-n heterojunction was constructed by uniformly immobilizing n-type 3DBiOI, which had loose porous structure composed of numerous small and thin nanosheets, on the surface of TiO2 with anatase/rutile (AR-TiO2) heterophase junction. Under light irradiation, the proposed BiOI/AR-TiO2 n-n heterojunction exhibited excellent optical absorption characteristics and photoelectrochemical activity. Additionally, the photoelectrochemical sensing platform demonstrated excellent analytical performance in monitoring chlorpyrifos. Under optimized conditions, it showed a wide detection range of 1 pg mL−1- 200 ng mL−1 and a detection limit (S/N = 3) as low as 0.24 pg mL−1, with superior selectivity and stability. The ultra-sensitivity and great specificity for detection of chlorpyrifos can be ascribed to chelation between Bi (Ⅲ) and C=N and P=S bonds in chlorpyrifos, which had been confirmed in this work. Meanwhile, the PEC sensor also had potential application value for monitoring chlorpyrifos in water samples, lettuce and pitaya, which the recoveries of samples ranged from 96.9% to 104.7% with a relative standard deviation (RSD) of 1.11%–5.93%. This sensor provided a novel idea for constructing heterojunctions with high photoelectric conversion efficiency and had a high application prospect for the detection of chlorpyrifos and other structural analogues.

Facile synthesis of graphene oxide-supported CoOx nanoparticles for efficient degradation of antibiotics via percarbonate activation: Performance, degradation pathway and mechanism

Recently, sodium percarbonate (SPC) is widely applied as a potential alternative of liquid H2O2 for advanced oxidation processes in waste treatment. Compared with H2O2, SPC could be used in a wider pH range and acted as a buffer for neutralizing the acidity in Fenton oxidation. Herein, we synthesized the two-dimension graphene oxide-supported CoOx nanoparticles (CoOx/GO), via the stabilization of CoOx nanoparticles at the surface of graphene oxide (GO), in SPC activation for degrading tetracycline. The detailed characterizations have confirmed CoOx/GO nanohybrid exhibits a two-dimensional thin nanosheet structure, and CoOx, which is a mixture of cobalt oxides and cobalt hydroxides, are successfully immobilized onto the surface of GO. Compared with other carriers, CoOx/GO presents the superior catalytic activity, with 80% degradation efficiency and 37.86% mineralization rate, in TC degradation via SPC activation. These results have lighted the significant role of GO in CoOx/GO nanohybrid for TC degradation via SPC activation. It seems that the electrons were transferred from GO to Co atoms, and enriching the electron cloud density of Co atoms, which was favour of SPC activation. Free radical quenching tests and EPR results demonstrated that OH• and •CO3- were dominating reactive oxygen species in CoOx/GO/SPC system. This study not only proposes an efficient method for the synthesis of Co-based nanocatalysts, but also provides a high-efficiency catalytic system for TC degradation.

Graphitic nanostructure integrated NiO composites for high-performance lithium-ion batteries

So far, various graphite-Nickel Oxide (NiO) composites have been investigated as anodes for Li-ion batteries. However, developing an ideal composite that overcomes NiO's electrical conductivity limitations remains a significant challenge. The current study presents an in-situ one-step hydrothermal technique for integrating NiO into a 3D peony-like graphitic nanostructure (NiO-GNF), resulting in unique thin nanosheet arrays with porous, conductive channels. Notably, the composites endowed controlled aggregation and restacking of NiO, buffered electrode stress and improved electrical conductivity due to the expanded nature of graphite. In addition, the enlarged interlayer spacing of expanded graphite facilitated an improved Li-ion insertion. Overall, in comparison to pure NiO anodes, the NiO-GNF composite achieved an impressive electrochemical improvement exhibiting a highly reversible discharge capacity of 678.2 mAh/g after 370 cycles at a current density of 0.5 A g−1, corresponding to a capacity retention of 60.7 %. The composite also demonstrated a capacity of 752 mAh/g at a high current density of 1.2 A g−1.

Improving the Energy Storage of Supercapattery Devices through Electrolyte Optimization for Mg(NbAgS)x(SO4)y Electrode Materials.

Electrolytes are one of the most influential aspects determining the efficiency of electrochemical supercapacitors. Therefore, in this paper, we investigate the effect of introducing co-solvents of ester into ethylene carbonate (EC). The use of ester co-solvents in ethylene carbonate (EC) as an electrolyte for supercapacitors improves conductivity, electrochemical properties, and stability, allowing greater energy storage capacity and increased device durability. We synthesized extremely thin nanosheets of niobium silver sulfide using a hydrothermal process and mixed them with magnesium sulfate in different wt% ratios to produce Mg(NbAgS)x)(SO4)y. The synergistic effect of MgSO4 and NbS2 increased the storage capacity and energy density of the supercapattery. Multivalent ion storage in Mg(NbAgS)x(SO4)y enables the storage of a number of ions. The Mg(NbAgS)x)(SO4)y was directly deposited on a nickel foam substrate using a simple and innovative electrodeposition approach. The synthesized silver Mg(NbAgS)x)(SO4)y provided a maximum specific capacity of 2087 C/g at 2.0 A/g current density because of its substantial electrochemically active surface area and linked nanosheet channels which aid in ion transportation. The supercapattery was designed with Mg(NbAgS)x)(SO4)y and activated carbon (AC) achieved a high energy density of 79 Wh/kg in addition to its high power density of 420 W/kg. The supercapattery (Mg(NbAgS)x)(SO4)y//AC) was subjected to 15,000 consecutive cycles. The Coulombic efficiency of the device was 81% after 15,000 consecutive cycles while retaining a 78% capacity retention. This study reveals that the use of this novel electrode material (Mg(NbAgS)x(SO4)y) in ester-based electrolytes has great potential in supercapattery applications.

Effect of contact number among graphene nanosheets on the conductivities of tunnels and polymer composites

Simple equations are expressed for tunnel conductivity, tunnel resistance and conductivity of a graphene-filled composite by the number of contacts and interphase part. More specially, the active filler amount is suggested by interphase depth, which changes the contact number. The conductivity of nanocomposite is presented by filler content, filler dimensions, tunneling length and interphase depth. The innovative model is surveyed by the experimented conductivity of real examples. Too, the impacts of numerous issues on the tunnel resistance, tunnel conductivity and conductivity of nanocomposite are discussed to validate the novel equations. The estimates agree with the experimented data and the impacts of several terms on the tunnel resistance, tunnel conductivity and conductivity of system are sensible. Thin and big nanosheets positively affect the nanocomposite’s conductivity, but thick nanosheets improve the tunnel conductivity. High conductivity is found at short tunnels, while the nanocomposite’s conductivity directly depends on the tunneling length. The dissimilar effects of these features on the tunneling properties and conductivity are described.

Atomically Thin 2D TiO2 Nanosheets with Ligand Modified Surface for Ultra-sensitive Humidity Sensor

As a kind of two-dimensional (2D) nanostructured materials, metal oxide nanosheets (MONS) are attractive and promising humidity sensing materials due to their considerable surface area, good charge carrier transportation, and designable surface functional groups properties. Nevertheless, the ultra-thin MONS modified with active functional groups for humidity sensing are still rare. As a proof of concept, the atomically thin TiO2 nanosheets with high surface area and electron-donating amino groups are prepared by a structure-maintained post-ligand modification strategy. The fabricated TiO2-based sensors demonstrate superior humidity sensing performance with high response, short response time, narrow hysteresis, and ultra-low theoretical limit of detection of about 15 ppm. Additionally, the possible mechanism is proposed from the AC complex impedance measurements and DC instantaneous reverse polarity experiments. This work provides a possible path for developing the high-performance 2D nanostructured metal oxides-based humidity materials through the surface chemical method.

Multicomponent Hybridization Transition Metal Oxide ElectrodeEnriched with Oxygen Vacancy for Ultralong-Life Supercapacitor.

Transition metal oxide electrode materials for supercapacitors suffer from poor electrical conductivity and stability, which are the research focus of the energy storage field. Herein, multicomponent hybridization Ni-Cu oxide (NCO-Ar/H2 -10) electrode enriched with oxygen vacancy and high electrical conductivity including the Cu0.2 Ni0.8 O, Cu2 O and CuO is prepared by introducing Cu element into Ni metal oxide with hydrothermal, annealing, and plasma treatment. The NCO-Ar/H2 -10 electrode exhibits high specific capacity (1524Fg-1 at 3Ag-1 ), good rate performance (72%) and outstanding cyclic stability (109% after 40,000 cycles). The NCO-Ar/H2 -10//AC asymmetric supercapacitor (ASC) achieves high energy density of 48.6Whkg-1 at 799.6Wkg-1 while exhibiting good cycle life (117.5% after 10,000 cycles). The excellent electrochemical performance mainly comes from the round-trip valence change of Cu+ /Cu2+ in the multicomponent hybridization enhance the surface capacitance during the redox process, and the change of electronic microstructure triggered by a large number of oxygen vacancies reduce the adsorption energy of OH- ions of thin nanosheet with crack of surface edge, ensuring electron and ion-transport processes and remitting the structural collapse of material. This work provides a new strategy for improving the cycling stability of transition metal oxide electrode materials.