β-MnO2, as the most stable phase of polycrystalline MnO2, has a narrow tunnel structure that limits ion diffusion and electron transfer, restricting its application in supercapacitors. In this work, we present novel all-in-one MnO2-based material, β-MnO2@δ-MnO2, featuring unique three-dimensional architecture with ultrathin δ-MnO2 nanostructures vertically grown on β-MnO2 network. This innovative design leverages structural support to enhance electrode material's specific surface area...

ABSTRACT Biomass‐derived carbons are eco‐friendly and sustainable materials, making them ideal for supercapacitors due to their high surface area, excellent conductivity, cost‐effectiveness, environmental benefits. This review provides valuable insights into biomass‐derived carbon modified supercapacitors, integrating both experimental results theoretical calculations. begins by discussing the origins of in including plant‐based, food waste‐derived, animal‐origin, microorganism‐generated...

We propose, both numerically and theoretically, a uniform model to investigate the plasmonically induced transparency effect in plasmonic metamaterial consisting of dual-layer spatially separated borophene nanoribbons array. The dynamic transfer properties light between two resonators can be effectively described by proposed model, with which we distinguish connect direct indirect coupling schemes system. By adjusting electron density separation ribbons, metamaterials enable narrow band...

We have investigated the effect of enhanced optical force via acoustic graphene plasmon (AGP) cavities with ultra-small mode volumes. The AGP can generate stronger field confinement and higher momentum, which could provide giant force, has no polarization preference for source. demonstrated that trapping potential applied on polystyrene nanoparticle in are as high -13.6 × 102 kBT/mW 2.5 nN/mW, respectively. radius rounded corners gap distance been studied. Compared an ideal nanocube,...

In this study, the water vapor corrosion resistance of two types high-entropy pyrosilicates ((Yb0.2Y0.2Lu0.2Ho0.2Er0.2)2Si2O7 ((5RE1/5)2Si2O7) and (Yb0.25Lu0.25Ho0.25Er0.25)2Si2O7 ((4RE1/4)2Si2O7)) single-component (Yb2Si2O7 Lu2Si2O7) were evaluated at 1350 °C for 50–100 h, initial behaviors these studied. The results showed that final products four all X2-type monosilicates, exhibiting similar phenomena. However, (4RE1/4)2Si2O7 generated many nanoscale monosilicate grains during corrosion....

Porphyrin-based molecular catalysts possess a typical aromatic macrocyclic structure regarding their metal centers and coordination frameworks, allowing for the development of promising electrocatalysts through precise selection porphyrin ligand. However, reports on metalloporphyrins as electrocatalytic urea oxidation reaction (UOR) remain scarce. With these considerations in mind, triphenylamine-Ni(II) (NiPor-TPA) was synthesized solvothermal approach from 5,10,15,20-tetrakis...

We propose a graphene metamaterial consisting of several layers longitudinally separated nanoribbon array embedded into gain-assisted medium, demonstrating electromagnetically induced transparency-like spectra. Combined with finite-difference time-domain simulations, the transfer matrix method and temporal coupled-mode theory are adopted to quantitatively describe its transmission characteristics. These characteristics can be tuned by altering gain level in medium layer Fermi energy...

Urea stands as a ubiquitous environmental contaminant. However, not only does urea oxidation reaction technology facilitate energy conversion, but it also significantly contributes to treating wastewater rich in urea. Furthermore, electrolysis has lower theoretical potential (0.37 V) compared water (1.23 V). As an electrochemical reaction, the catalytic efficacy of is largely contingent upon catalyst employed. Among plethora electrocatalysts, nickel-based compounds emerge preeminent...

Laminated rubber bearings may exhibit rupture damage due to factors such as temperature variations and seismic activity, which can reduce their isolation performance. Current detection methods, including human‐vision inspection computer‐vision inspection, have certain limitations in accurately assessing the degree of damage. This study attempts combine piezoelectric‐based active sensing method with a machine learning algorithm detect laminated bearings. A series varying degrees were...

The electrocatalytic urea oxidation reaction (UOR) is considered an effective pathway for hydrogen generation due to its lower theoretical potential, replacing the traditional oxygen evolution (OER). However, UOR requires development of high‐performance and stable catalysts overcome this slow kinetics challenge. Herein, we successfully prepared self‐supported bimetallic sulfides (NiCoS) with a layered nanosheet structure on carbon paper (CP) via one‐step electrodeposition method. morphology...

The expansion of construction land is a key feature urbanization. Understanding its spatiotemporal evolution in Yunnan’s plateau basins crucial for minimizing resource waste and promoting coordinated regional development. This study employs use nighttime light data to analyze the dynamics decoupling from economic growth, using various indices Tapio model. results reveal steady rise urban 1990 2020, characterized by significant spatial variations speed intensity. Edge predominated throughout...

ABSTRACT Supercapacitors are promising energy storage solutions known for their high‐power density, fast charge–discharge rates, and long cycle life. Recently, Ti 3 C 2 T x MXene, a member of the 2D MXene family, has emerged as potential electrode material supercapacitors. However, its limited interlayer spacing hinders broader applications. In this study, we introduce novel δ‐MnO @MXene heterostructure with expanded spacing, synthesized using hydrothermal approach. This design enhances...

In bridge engineering, void damage in rubber bearings refers to the phenomenon where gaps occur between bearing and structure due factors such as aging, overloading, earthquakes. Void can lead abnormal stress distribution, deformation failure, uneven load transfer, thereby affecting overall stability safety of bridge. Consequently, long-term monitoring is essential. However, methods manual inspection computer vision have disadvantages, including high costs, lengthy processes, limited scope....

The electrochemical reduction of CO2 is an efficient method to convert waste into hydrocarbon fuels, among which methanol the direct liquid fuel in cells (DMFC). Copper most widely used catalyst for reaction (CO2RR); affected by surface morphology copper. Here, effect and mechanism CO2RR on three typical low-index Cu (100), (110) (111) surfaces are studied. According our results, provides optimum via → *COOH *CO *CHO *CH2O *CH2OH CH3OH pathway, where potential-determining step (PDS). This...