Enhanced Basal-Plane Catalytic Activity of MoS by Constructing an Electron Bridge for High-Performance Lithium-Sulfur Batteries.

MoS is a promising sulfur host material for lithium-sulfur (Li-S) batteries, but its low conductivity and limited active edge sites largely inhibit the catalytic activity toward the conversion of lithium polysulfides (LiPSs). Herein, we propose an electron bridge strategy by combining interlayer structure modification and electronic modulation to activate the basal-plane catalytic activity of MoS for the highly efficient catalytic conversion of LiPSs. As validated by experimental characterizations and theoretical calculations, the proposed strategy not only creates a conductive network but also induces delocalized electron redistribution within the MoS basal planes, leading to facilitated interfacial charge transfer kinetics and accelerated LiPSs redox kinetics.

Role of the Metal Precursor in Preparing Dual-Atom Catalysts for the Oxygen Reduction Reaction.

Dual-atom catalysts (DACs) have arisen as a novel type of heterogeneous catalyst that extends from single-atom catalysts (SACs) by incorporating two kinds of metals. These materials have demonstrated enhanced performance when compared to SACs. The choice of metal precursors plays an important role in the synthesis of DACs.

Steering the liquid-solid redox conversion of lithium-selenium batteries through ultrafine MoC catalyst.

Selenium cathodes have attracted much attention because of the high electronic conductivity and energy density. However, the shuttle effect of lithium polyselenides (LiPSes) leads to rapid capacity fading, hindering the practical application of lithium-selenium (Li-Se) batteries. Herein, an ultrafine MoC catalyst has been synthesized and utilized to accelerate the conversion from liquid LiPSes to solid LiSe/LiSe, leading to suppressed shuttle effect and thus improved battery performance.

Strengthened d-p Orbital Hybridization through Asymmetric Coordination Engineering of Single-Atom Catalysts for Durable Lithium-Sulfur Batteries.

Although single-atom catalysts (SACs) have been largely explored in lithium-sulfur (Li-S) batteries, the commonly reported nonpolar transition metal-N coordinations only demonstrate inferior adsorption and catalytic activity toward shuttled lithium polysulfides (LiPSs). Herein, single Fe atoms with asymmetric coordination configurations of Fe-NC-C were precisely designed and synthesized as efficient immobilizer and catalyst for LiPSs. The experimental and theoretical results elucidate that the asymmetrically coordinated Fe-NC-C moieties not only enhance the LiPSs anchoring capability by the formation of extra π-bonds originating from S p orbital and Fe d/d orbital hybridization but also boost the redox kinetics of LiPSs with reduced LiS precipitation/decomposition barrier, leading to suppressed shuttle effect.

Identification of CXCL10 as a Prognostic Biomarker for Clear Cell Renal Cell Carcinoma.

Background: One of the widespread forms of kidney tumor is clear cell renal cell carcinoma (ccRCC), with poor prognosis and insensitivity to radio chemotherapy as there is limited capacity to understand the disease mechanism. This study aims at identifying potential biomarkers and the underlying processes of ccRCC using bioinformatics analysis.

Methods: Transcriptome data of relevant samples were downloaded from The Cancer Genome Atlas (TCGA) database.

Full-Dimensional Grain Boundary Stress Release for Flexible Perovskite Indoor Photovoltaics.

Perovskite photovoltaics are strong potential candidates to drive low-power off-grid electronics for indoor applications. Compared with rigid devices, flexible perovskite devices can provide a more suitable surface for indoor small electronic devices, enabling them have a broader indoor application prospect. However, the mechanical stability of flexible perovskite photovoltaics is an urgent issue solved.

Organisation of services and systems of care in paediatric spinal cord injury rehabilitation in seven countries: a survey with a descriptive cross-sectional design.

Study Design: International multicentre cross-sectional study.

Objectives: To describe the organisation and systems of paediatric spinal cord injury (SCI) rehabilitation services in seven countries and compare them with available recommendations and key features of paediatric SCI.

Setting: Ten SCI rehabilitation units in seven countries admitting children and adolescents with SCI < 18 years of age.

Risk factors for venous thromboembolism in patients with spinal cord injury: A systematic review and meta-analysis.

Context: Patients with spinal cord injury (SCI) are at high risk for venous thromboembolism (VTE). The risk factors for VTE in patients with SCI are complex.

Objective: This meta-analysis was conducted to clarify the risk factors for VTE in patients with SCI.

Validation of a novel cone tool for pinprick sensation examination in patients with spinal cord injury.

Study Design: Psychometrics study.

Objective: The objective of this study was to introduce a novel tool for pinprick sensation examination and validate its usefulness in patients with spinal cord injury (SCI).

Setting: China Rehabilitation Research Center, Capital Medical University School of Rehabilitation Medicine, China.