Restraining Planar Gliding in Single-Crystalline LiNiCoMnO Cathodes by Combining Bulk and Surface Modification Strategies.

The delamination cracking from planar gliding along the (003) facets and anisotropic lattice strain perpendicular to the (003) facets inevitable lead to degradation of Ni-rich single-crystal cathode materials, adversely affecting their cyclability. Herein, we rationally design a single-crystal LiNiCoMnO (SC90) cathode with robust chemo-mechanical properties, in which coherently grown MgO octahedra and BO tetrahedra are incorporated into the lattice, and a stabilizing Mg(BO) layer is concurrently formed on the particle surface. Multiscale in/ex situ characterizations and theoretical calculations indicate that introducing the MgO and BO units leads to a "pinning effect" within the layered structure.

NaV(PO)-decorated NaV(PO)F as a high-rate and cycle-stable cathode material for sodium ion batteries.

Since NaV(PO) (NVP) possesses modest volume deformation and three-dimensional ion diffusion channels, it is a potential sodium-ion battery cathode material that has been extensively researched. Nonetheless, NVP still endures the consequences of poor electronic conductivity and low voltage platforms, which need to be further improved. On this basis, a high voltage platform NaV(PO)F was introduced to form a composite with NVP to increase the energy density.

Enhancing Sodium-Ion Transport by Hollow Nanotube Structure Design of a VS@C Anode for Sodium-Ion Batteries.

VS has received extensive attention in the field of sodium-ion batteries (SIBs) due to its two-dimensional (2D) layered structure, and weak van der Waals forces between V-S accelerate the transport of sodium ions. However, the long-term cycling of VS still suffers from volume expansion and low conductivity. Herein, a hollow nanotube VS@C (H-VS@C) with improved conductivity was synthesized by a solvothermal method to alleviate cracking caused by volume expansion.

Reduced Graphene Oxide Decorated NaV(PO) Microspheres as Cathode Material With Advanced Sodium Storage Performance.

Reduced graphene oxide (rGO) sheet decorated NaV(PO) (NVP) microspheres were successfully synthesized by spray-drying method. The NVP microspheres were embedded by rGO sheets, and the surface of the particles were coated by rGO sheets and amorphous carbon. Thus, the carbon conductive network consisted of rGO sheets and amorphous carbon generated in the cathode material.

Correlations between serum IL33 and tumor development: a meta-analysis.

Background: Interleukin-33 (IL-33) has recently been implicated in tumor development.

Methods: Data was obtained from PubMed, EMBASE, Clinical trial, Cochrane Library, Web of Science, CNKI and Wanfang databases. After quality assessment and data extraction, a meta-analysis was performed using Review Manager 5.

Factors for postoperative gallstone occurrence in patients with gastric cancer: a meta-analysis.

Objective: To evaluate risk factors for gallstones after gastrectomy.

Methods: To identify documents published from 1990 to 2011 the Pubmed, Cochrane Library, Springer Link, CBM and WanFang databases were searched and a meta-analysis was performed with RevMan 5.2 software for odds ratios and 95%CIs.