Editable Light Response in Halide Perovskites Encapsulated within Single-Walled Carbon Nanotubes.

One-dimensional (1D) perovskite heterostructures fabricated through the template method employing single-walled carbon nanotubes (SWCNTs) have garnered significant attention due to their distinctive structural properties. Nevertheless, substantial challenges remain in the device applications of 1D halide perovskite heterostructures due to the separation issue of the semiconductor SWCNTs (s-SWCNTs) after encapsulating the perovskite. Here, we report 1D perovskite heterostructures based on CsPbBr encapsulated inside s-SWCNTs (CPB@s-SWCNTs), realizing editable photoresponse.

Negative thermal expansion and oxygen-redox electrochemistry.

Structural disorder within materials gives rise to fascinating phenomena, attributed to the intricate interplay of their thermodynamic and electrochemical properties. Oxygen-redox (OR) electrochemistry offers a breakthrough in capacity limits, while inducing structural disorder with reduced electrochemical reversibility. The conventional explanation for the thermal expansion of solids relies on the Grüneisen relationship, linking the expansion coefficient to the anharmonicity of the crystal lattice.

Evidence-based advances in minimally invasive surgery in infants with congenital gastrointestinal anomalies: a narrative review.

Background And Objective: Minimally invasive surgery (MIS) has been widely utilized to manage congenital gastrointestinal (GI) anomalies in children during the last two decades. Currently, MIS has a proven track-record for its feasibility and provides multiple benefits including better cosmesis, less trauma, and faster recovery in neonates and infants. However, it remains controversial whether MIS provides better definitive outcomes in pediatric patients with GI anomalies, especially among neonates.

A free-standing manganese cobalt sulfide@cobalt nickel layered double hydroxide core-shell heterostructure for an asymmetric supercapacitor.

Rational design of self-supported electrode materials is important to develop high-performance supercapacitors. Herein, a free-standing MnCoS@CoNi LDH (MCS@CN LDH) core-shell heterostructure is successfully prepared on Ni foam using the hydrothermal reaction and electrodeposition. In this architecture, the inner MnCoS nanotube provides an ultra-high electrical conductivity and the CoNi LDH nanosheets can offer more electrochemical active sites for better faradaic reactions.

Oxygen-vacancy-rich nickel-cobalt layered double hydroxide electrode for high-performance supercapacitors.

The introduction of oxygen vacancies into electrode materials has been proven to be a valid way to enhance the electrochemical performance. However, the traditional methods to introduce oxygen vacancies require severe conditions that may be harmful to hydroxides. Herein, the oxygen vacancy-rich nickel-cobalt (NiCo) layered double hydroxide (denoted as V-NiCo LDH) nanowire array electrode is synthesized using the chemical reduction method.

"One-for-All" strategy to design oxygen-deficient triple-shelled MnO and hollow FeO microcubes for high energy density asymmetric supercapacitors.

Intrinsically poor conductivity, sluggish ion transfer kinetics, and limited specific area are the three main obstacles that confine the electrochemical performance of metal oxides in supercapacitors. Engineered hollow metal oxide nanostructures can effectively satisfy the increasing power demand of modern electronics. In this work, both triple-shelled MnO and hollow FeO microcubes have been synthesized from a single MnCO template.

Mesostructured Carbon Nanotube-on-MnO Nanosheet Composite for High-Performance Supercapacitors.

Carbon nanomaterials have been widely used to enhance the performance of MnO-based supercapacitors. However, it still remains a challenge to directly fabricate high combining strength, mesostructured and high-performance MnO/carbon nanotube (CNT)-nanostructured composite electrodes with a little weight percentage of carbon materials. Here, we report a novel mesostructured composite of the CNT-on-MnO nanosheet with a high MnO percentage, which consists of vertically aligned MnO nanosheets with nanopores and in situ formed oriented CNTs on MnO nanosheets (tube-on-sheet).

P-Doped NiCoS nanotubes as battery-type electrodes for high-performance asymmetric supercapacitors.

NiCo2S4 is a promising electrode material for supercapacitors, due to its rich redox reactions and intrinsically high conductivity. Unfortunately, in most cases, NiCo2S4-based electrodes often suffer from low specific capacitance, low rate capability and fast capacitance fading. Herein, we have rationally designed P-doped NiCo2S4 nanotube arrays to improve the electrochemical performance through a phosphidation reaction.

Heterostructural Graphene Quantum Dot/MnO Nanosheets toward High-Potential Window Electrodes for High-Performance Supercapacitors.

The potential window of aqueous supercapacitors is limited by the theoretical value (≈1.23 V) and is usually lower than ≈1 V, which hinders further improvements for energy density. Here, a simple and scalable method is developed to fabricate unique graphene quantum dot (GQD)/MnO heterostructural electrodes to extend the potential window to 0-1.

In Situ Synthesis of Vertical Standing Nanosized NiO Encapsulated in Graphene as Electrodes for High-Performance Supercapacitors.

NiO is a promising electrode material for supercapacitors. Herein, the novel vertically standing nanosized NiO encapsulated in graphene layers (G@NiO) are rationally designed and synthesized as nanosheet arrays. This unique vertical standing structure of G@NiO nanosheet arrays can enlarge the accessible surface area with electrolytes, and has the benefits of short ion diffusion path and good charge transport.