Construction of uniform MgO nanoshells for improved high-voltage performance of Li-ion batteries.

A conformal Mg(OH) nanoshell was constructed through a wet-chemical process, where a gradual release of OH as the precipitating agent was designed to ensure the heterogeneous growth of the coating species. Such a coating treatment was found to be efficient in improving the structural stability and electrochemical stability of a 5 V LiNiMnO cathode.

Effect of magnetic field treatment on the softening of green chilies (Capsicum annuum L.) during storage.

In this study, effects of magnetic field treatment on the softening of green chilies during storage (0-30 d at 10 °C) were investigated, and the cell wall polysaccharide content, modifying enzyme activities, water distribution, and cell wall structure were determined. After 30 d of storage, the weight loss of the green chilies in conventional refrigeration (CR) group reached 35.40 %, whereas it was 20.

Appendicoscopy using single-operator cholangioscope in the management of acute obstructive appendicitis: a novel alternative (with video).

Background And Aims: The aim of this study was to investigate the safety and efficacy of appendicoscopy using a single-operator cholangioscope (SOC) for the management of acute obstructive appendicitis.

Methods: This study describes 110 cases of acute obstructive appendicitis managed with the use of appendicoscopy between January 2021 and June 2023. The success rate (technical + clinical), procedure time, time to abdominal pain relief according to a visual analog scale score, postoperative length of hospital stay, and adverse event rates were recorded and analyzed.

Advances in peptide-based drug delivery systems.

Drug delivery systems (DDSs) are designed to deliver drugs to their specific targets to minimize their toxic effects and improve their susceptibility to clearance during targeted transport. Peptides have high affinity, low immunogenicity, simple amino acid composition, and adjustable molecular size; therefore, most peptides can be coupled to drugs via linkers to form peptide-drug conjugates (PDCs) and act as active pro-drugs. PDCs are widely thought to be promising DDSs, given their ability to improve drug bio-compatibility and physiological stability.

Surface Lattice Modulation Enables Stable Cycling of High-Loading All-solid-state Batteries at High Voltages.

Halide solid electrolytes, known for their high ionic conductivity at room temperature and good oxidative stability, face notable challenges in all-solid-state Li-ion batteries (ASSBs), especially with unstable cathode/solid electrolyte (SE) interface and increasing interfacial resistance during cycling. In this work, we have developed an Al-doped, cation-disordered epitaxial nanolayer on the LiCoO surface by reacting it with an artificially constructed AlPO nanoshell; this lithium-deficient layer featuring a rock-salt-like phase effectively suppresses oxidative decomposition of LiInCl electrolyte and stabilizes the cathode/SE interface at 4.5 V.

Surface Lattice Modulation through Chemical Delithiation toward a Stable Nickel-Rich Layered Oxide Cathode.

Nickel-rich layered oxides (NLOs) are considered as one of the most promising cathode materials for next-generation high-energy lithium-ion batteries (LIBs), yet their practical applications are currently challenged by the unsatisfactory cyclability and reliability owing to their inherent interfacial and structural instability. Herein, we demonstrate an approach to reverse the unstable nature of NLOs through surface solid reaction, by which the reconstructed surface lattice turns stable and robust against both side reactions and chemophysical breakdown, resulting in improved cycling performance. Specifically, conformal La(OH) nanoshells are built with their thicknesses controlled at nanometer accuracy, which act as a Li capturer and induce controlled reaction with the NLO surface lattices, thereby transforming the particle crust into an epitaxial layer with localized Ni/Li disordering, where lithium deficiency and nickel stabilization are both achieved by transforming oxidative Ni into stable Ni.

Advancing to 4.6 V Review and Prospect in Developing High-Energy-Density LiCoO Cathode for Lithium-Ion Batteries.

Layered LiCoO (LCO) is one of the most important cathodes for portable electronic products at present and in the foreseeable future. It becomes a continuous push to increase the cutoff voltage of LCO so that a higher capacity can be achieved, for example, a capacity of 220 mAh g at 4.6 V compared to 175 mAh g at 4.

Anion Doping for Layered Oxides with a Solid-Solution Reaction for Potassium-Ion Battery Cathodes.

The development of potassium-ion batteries (PIBs) is challenged by the shortage of stable cathode materials capable of reversibly hosting the large-sized K (1.38 Å), which is prone to cause severe structural degradation and complex phase evolution during the potassiation/depotassiation process. Here, we identified that anionic doping of the layered oxides for PIBs is effective to combat their capacity fading at high voltage (>4.

Coordination-Assisted Precise Construction of Metal Oxide Nanofilms for High-Performance Solid-State Batteries.

The application of solid-state batteries (SSBs) is challenged by the inherently poor interfacial contact between the solid-state electrolyte (SSE) and the electrodes, typically a metallic lithium anode. Building artificial intermediate nanofilms is effective in tackling this roadblock, but their implementation largely relies on vapor-based techniques such as atomic layer deposition, which are expensive, energy-intensive, and time-consuming due to the monolayer deposited per cycle. Herein, an easy and low-cost wet-chemistry fabrication process is used to engineer the anode/solid electrolyte interface in SSBs with nanoscale precision.

Precise surface control of cathode materials for stable lithium-ion batteries.

The increasing demand for high-energy Li-ion batteries (LIBs) continues to push the development of electrode materials, particularly cathode materials, towards their capacity limits. Despite the enormous success, the stability and reliability of LIBs are becoming a serious concern due to the much-aggravated side reactions between electrode materials and organic electrolytes. How to stabilize the cathode/electrolyte interface is therefore an imperative and urgent task drawing considerable attention from both academia and industry.

High-Performance Cathode Materials for Potassium-Ion Batteries: Structural Design and Electrochemical Properties.

Due to the obvious advantage in potassium reserves, potassium-ion batteries (PIBs) are now receiving increasing research attention as an alternative energy storage system for lithium-ion batteries (LIBs). Unfortunately, the large size of K makes it a challenging task to identify suitable electrode materials, particularly cathode ones that determine the energy density of PIBs, capable of tolerating the serious structural deformation during the continuous intercalation/deintercalation of K . It is therefore of paramount importance that proper design principles of cathode materials be followed to ensure stable electrochemical performance if a practical application of PIBs is expected.

Evaluation of the efficiency of antibiotics in treating adult patients with symptomatic apical periodontitis: A protocol for systematic review and meta-analysis.

Background: When a person feels dental pain, it brings great discomfort and damages the quality of life. Symptomatic apical periodontitis is identified as the most frequent cause that triggers dental pain. Symptomatic apical periodontitis arises from an infection or inflammation in the pulpless root canal structure.

Manipulating Particle Chemistry for Hollow Carbon-based Nanospheres: Synthesis Strategies, Mechanistic Insights, and Electrochemical Applications.

Hollow carbonbased nanospheres (HCNs) have been demonstrated to show promising potential in a large variety of research fields, particularly electrochemical devices for energy conversion/storage. The current synthetic protocols for HCNs largely rely on template-based routes (TBRs), which are conceptually straightforward in creating hollow structures but challenged by the time-consuming operations with a low yield in product as well as serious environmental concerns caused by hazardous etching agents. Meanwhile, they showed inadequate ability to build complex carbon-related architectures.

S-Edge-rich MoS arrays vertically grown on carbon aerogels as superior bifunctional HER/OER electrocatalysts.

Molybdenum disulfide (MoS) is a potential earth-abundant electrocatalyst for the hydrogen evolution reaction (HER), but the lack of in-depth understanding of its intrinsic activity still impedes the further optimization and design of MoS-based electrocatalysts. Herein, we report a facile in situ hydrothermal synthetic method to prepare vertical MoS arrays grown on guar gum-derived carbon aerogels (GCA), termed MoS@GCA. The obtained well-assembled MoS@GCA architectures consist of uniform, few-layered and S-edge-rich MoS nanoflakes with a length of approximately 100 nm, which effectively prevent the inherent stacking among MoS layers and connect the charge transfer path between interlayers, thus endowing MoS@GCA with a huge number of active sites and high conductivity.

Publisher Correction: A CoO-CDots-CN three component electrocatalyst design concept for efficient and tunable CO reduction to syngas.

The original HTML version of this Article omitted to list Yeshayahu Lifshitz as a corresponding author and incorrectly listed Shuit-Tong Lee as a corresponding author.Correspondingly, the original PDF version of this Article incorrectly stated that "Correspondence and requests for materials should be addressed to X.J.

A CoO-CDots-CN three component electrocatalyst design concept for efficient and tunable CO reduction to syngas.

Syngas, a CO and H mixture mostly generated from non-renewable fossil fuels, is an essential feedstock for production of liquid fuels. Electrochemical reduction of CO and H/HO is an alternative renewable route to produce syngas. Here we introduce the concept of coupling a hydrogen evolution reaction (HER) catalyst with a CDots/CN composite (a CO reduction catalyst) to achieve a cheap, stable, selective and efficient route for tunable syngas production.

Carbon Dots as Fillers Inducing Healing/Self-Healing and Anticorrosion Properties in Polymers.

Self-healing is the way by which nature repairs damage and prolongs the life of bio entities. A variety of practical applications require self-healing materials in general and self-healing polymers in particular. Different (complex) methods provide the rebonding of broken bonds, suppressing crack, or local damage propagation.

New Insight of Water-Splitting Photocatalyst: HO-Resistance Poisoning and Photothermal Deactivation in Sub-micrometer CoO Octahedrons.

Hydrogen production by photocatalytic overall water-splitting represents an ideal pathway for clean energy harvesting, for which developing high-efficiency catalysts has been the central scientific topic. Nanosized CoO with high solar-to-hydrogen efficiency (5%) is one of the most promising catalyst candidates. However, poor understanding of this photocatalyst leaves the key issue of rapid deactivation unclear and severely hinders its wide application.

Cu-CDots nanocorals as electrocatalyst for highly efficient CO reduction to formate.

Electrochemical reduction of CO is a key component of many prospective artificial technologies for renewable carbon-containing fuels, but it still suffers from the high overpotentials required to drive the process, low selectivity for diversiform products and the high cost of the catalyst. Here, we report that Cu-CDots nanocorals is a highly efficient, low-cost and stable electrocatalyst for CO reduction in aqueous solution. The major product of CO reduction on the Cu-CDots nanocorals is HCOOH with an inconceivable low overpotential of 0.

Carbon dot and BiVO quantum dot composites for overall water splitting via a two-electron pathway.

Carbon dot and BiVO quantum dot composites (CDs/BiVO QDs) show a significantly improved photocatalytic activity and high stability for overall water splitting. By using 5% CDs/BiVO QDs as photocatalysts, the H evolution of 0.92 μmol h, was achieved under solar light irradiation without any cocatalysts or sacrificial reagents, which is about 4 times that of BiVO QDs (0.

Visible-Light-Induced Effects of Au Nanoparticle on Laccase Catalytic Activity.

A deep understanding of the interaction between the nanoparticle and enzyme is important for biocatalyst design. Here, we report the in situ synthesis of laccase-Au NP (laccase-Au) hybrids and its catalytic activity modulation by visible light. In the present hybrid system, the activity of laccase was significantly improved (increased by 91.