Scalable Synthesis of a Si/C Composite Derived from Photovoltaic Silicon Kerf Waste toward Anodes for High-Performance Lithium-Ion Batteries

The solid waste from solar photovoltaic (PV) systems diverges from carbon neutrality targets and the core principles of clean energy. Herein, we present an innovative and cost-effective strategy to fabricate P-SKW@C as anode materials based on the natural properties of submicron silicon kerf waste (SKW) by increasing the surface oxide layer and combining the synergistic effects of magnesium thermal and acid leaching. In particular, the carbon layer establishes channels for electron and ion transport, thereby enhancing the conductivity of P-SKW@C and the mobility of lithium ions. The formation of pores by the synergistic effects of magnesium thermal and acid leaching provides buffer space to accommodate the volume changes in silicon, ensuring the structural integrity of the electrode. Specifically, the P-SKW@C anode exhibits superior rate performance, reaching 1006 mAh g–1 at 2 A g–1, and an outstanding reversible capacity of 1103 mAh g–1 with the current density returning to 0.2 A g–1. Furthermore, the P-SKW@C anode demonstrates a remarkable specific capacity of 905 mAh g–1 at 500 mA g–1 over 200 cycles. Notably, the assembled LiFePO4//P-SKW@C full cell maintains a stable capacity of 105.96 mAh g–1 and an energy density of 329.84 Wh kg–1 at 0.5 °C after 50 cycles. This work introduces a new strategy for recycling the SKW in a sustainable, economical, and environmentally friendly way, facilitating the integration of solid waste and energy storage

Sonocrystallization of ZIF‑8 on Electrostatic Spinning TiO₂ Nanofibers Surface with Enhanced Photocatalysis Property through Synergistic Effect

Semiconductor–metal-organic framework (MOF) hybrid photocatalysts have attracted increasing attention because of their enhanced photocatalytic activity. However, the effect of the interface reaction between semiconductor and MOFs is rarely studied. In this work, we studied the synthesis and photocatalytic activity of zeolitic imidazolate framework-8 (ZIF-8) decorated electrostatic spinning TiO₂ nanofibers (TiO₂ ESNFs). TiO₂/ZIF-8 hybrid photocatalysts were prepared via a facile sonochemical route. It was crucial that the ZIF-8 was assembled homogeneously on the surface of TiO₂ ESNFs and formed a N–Ti–O bond under sonochemical treatment, which may result in reducing recombination of the electron–hole pairs. The chemically bonded TiO₂/ZIF-8 nanocomposites displayed excellent performance of thermal stability, controllable crystallinity, and great enhancement of photocatalytic activity in Rhodamine B (Rh B) photodegradation. Furthermore, the UV–vis light adsorption spectra of TiO₂/ZIF-8 nanocomposites showed that the ZIF-8 photosensitizer extended the spectral response of TiO₂ to the visible region. The new strategy reported here can enrich the method for designing new semiconductor–MOF hybrid photocatalysts

An overview on sleep disturbance in TBI population.

<p>(A) sleep disturbance in various categories of severity of TBI. (B) distribution of insomnia symptoms in TBI patients with insomnia.</p

Summary of self-reported sleep quality, and psychopathology measures among TBI without sleep disturbance, TBI with insomnia and TBI with hypersomnia groups.

<p>Error bars represent mean ± SD. Significance: * p<0.05, ** p<0.01, ^ ^ p<0.01 after adjusting for HADS anxiety and depression scores.</p