Achieving high-capacity aqueous supercapacitors anion-doped construction of dual redox centers in NiCoSeO.

In asymmetric supercapacitors, transition metal selenates are promising electrodes, but their capacity are limited by a single redox center. To further enhance the performance of transition metal selenates, NiCoSeO (NCSeO) doped with N and Cl was prepared on nickel-plated carbon cloth (NCSeO-NCl-NiCC). During electrochemical reactions, NCSeO can be converted to M(OH) (M = Ni/Co) and OH is replaced by N and Cl.

Multifunctional Iron Selenate Sheath of Fe-Based Anode Achieving High-Rate Capacity-Durability Combination of Aqueous Hybrid Energy Storage Devices.

The introduction of battery-type cathode has been commonly considered a preferred approach to boost the energy density of aqueous hybrid energy storage devices (AHESDs) in alkalic systems, but AHESDs with both high energy density and power density are rare due to the great challenge in designing battery-type anode materials with high rate and durability comparable to capacitive-type carbon anodes. In this paper, a well-hydrated iron selenate (FeSeO) sheath is constructed around FeOOH nanorods by a facile electrochemical activation, demonstrating the unique multifunction in fasting charge diffusion, promoting the dissociation of HO, and inhibiting the irreversible phase transition of FeOOH to inert γ-FeO, which endow the hydrated sheath coated Fe-based anodes with an impressive rate capability and superior durability. Thanks to the comprehensive performance of this Fe-based anode, the assembled AHESD delivered a high energy density of 117 Wh kg with the extraordinary durability of almost 100% capacity retention after 40 000 cycles.

Assessment of cytotoxicity, acute, subacute toxicities and antioxidant activities (in vitro) of Sanghuangporus vaninii crude polysaccharide.

Ethnopharmacology Relevance: Sanghuangporus vaninii (S. vaninii), as a traditional large medicinal fungus, has a history of more than 2000 years in Chinese history and has been widely used to treat female diseases such as vaginal discharge, amenorrhea, and uterine bleeding, and recent pharmacological studies have also found that it has antioxidant, anti-inflammatory, and anti-tumor physiological activity, which has received more and more attention.

Aim Of The Study: The objective was to evaluate cytotoxicity and the acute, subacute toxicity, and in vitro antioxidant activity of S.

Extraction, Purification, and Structural Characterization of Polysaccharides from with Anti-Inflammatory Activity.

In order to obtain homogeneous polysaccharides with antioxidant and anti-inflammatory activities, a response surface method (RSM) was used to compare the polysaccharide extraction rate of hot water extraction and ultrasonic-assisted extraction from . The optimal conditions for ultrasonic-assisted extraction were determined as follows: an extraction temperature of 60 °C, an extraction time of 60 min, a solid-liquid ratio of 40 g/mL, and an ultrasonic power of 70 W. An SVP ( polysaccharides) extraction rate of 1.

Methyl-terminated graphite carbon nitride with regulatable local charge redistribution for ultra-high photocatalytic hydrogen production and antibiotic degradation.

Intramolecular-tailored graphite carbon nitride (g-CN) has great potential to greatly optimize the photo-response performance and carrier separation ability, but exquisite molecular structure engineering is still challenging. Firstly, a series of oxygen and terminal methyl moiety co-modified g-CN (CNNx) has been systematically prepared by using N-Hydroxysuccinimide (HOSu) as a novel copolymerized precursor and urea. The density functional theory (DFT) calculations demonstrated that the presence of oxygen can lower the binding energy for the C-C bond to make the terminal modification easier.

Inhabiting Inactive Transition by Coupling Function of Oxygen Vacancies and Fe─C Bonds achieving Long Cycle Life of an Iron-Based Anode.

Fe-based battery-type anode materials with many faradaic reaction sites have higher capacities than carbon-based double-layer-type materials and can be used to develop aqueous supercapacitors with high energy density. However, as an insurmountable bottleneck, the severe capacity fading and poor cyclability derived from the inactive transition hinder their commercial application in asymmetric supercapacitors (ASCs). In this work, driven by the "oxygen pumping" mechanism, oxygen-vacancy-rich Fe@Fe O @Fe C@C nanoparticles that consist of a unique "fruit with stone"-like structure are developed, and they exhibit enhanced specific capacity and fast charge/discharge capability.

Flexible aqueous supercapacitors with excellent cycling performance and high-energy density based on mesocrystalline NiCo-LDHs.

Flexible aqueous supercapacitors are promising candidates as safe power sources for wearable electronic devices (WEDs). However, the absence of advanced electrode materials with high structural stability has become the most critical factor hindering the development, which is closely related to the poor interface combination between the active substances and flexible collectors. Herein, a unique rigid layered double hydroxide (LDH) nanorod array with the mesocrystalline feature is created using the NiO-Ni layer as the inducer by the electrodeposition strategy.

Surface urban heat island and its relationship with land cover change in five urban agglomerations in China based on GEE.

The development of urbanization has changed the original land cover and exacerbated the urban heat island effect, seriously affecting the sustainable development of the ecological environment. Research on urban heat island characteristics and land cover changes in five major urban agglomerations in China to provide a reference for preventing thermal environmental risks and urban agglomeration construction planning. This paper estimates the surface urban heat island intensity (SUHII) of the five major urban agglomerations in China from 2003 to 2019 based on Google Earth Engine (GEE) through the urban-rural dichotomy, analyzes their trends through the Sen + M-K trend analysis method, and combines the detrending rate matrix to analyze the impact of land cover type shift on urban heat island change.

Prediction of Spatiotemporal Invasive Risk of the Red Import Fire Ant, (Hymenoptera: Formicidae), in China.

The red imported fire ant, (Hymenoptera: Formicidae) is an invasive pest, and it has spread rapidly all over the world. Predicting the suitable area of growth in China will provide a reference that will allow for its invasion to be curbed. In this study, based on the 354 geographical distribution records of , combined with 24 environmental factors, the suitable areas of growth in China under current (2000s) and future (2030s and 2050s) climate scenarios (SSPs1-2.

Predicting the Distribution of the Invasive Species : Combining MaxEnt and Geodetector Models.

is a globally invasive pest of eucalyptus plantations, and is steadily spread throughout China. Predicting the growth area of in China is beneficial to the establishment of early monitoring, forecasting, and prevention of this pest. Based on 194 valid data points and 21 environmental factors of in China, this study simulated the potential distribution area of in China under three current and future climate scenarios (SSPs1-2.