Enhanced Cycling Performance of High-Voltage Solid-State Lithium Batteries via In Situ Cathode-Electrolyte Interface Construction.

The [solvent-Li] complex in poly(vinylidene fluoride) (PVDF)-based polymer electrolytes enables fast ion conduction but also makes it difficult to be compatible with high-voltage cathodes. Here, we demonstrate that the residual amount of solvent significantly affects the ion transport properties and interfacial stability of the electrolyte. In LiNiCoMnO/Li batteries, a nonuniform and unstable double-layer CEI is formed due to the decomposition of desolvated NMP molecules and lithium salts, resulting in aggravated polarization and rapid capacity decay.

Iron-based magnetic nanocomplexes for combined chemodynamic and photothermal cancer therapy through enhanced ferroptosis.

Chemodynamic therapy (CDT) guided by Fenton chemistry and iron-containing materials can induce ferroptosis as a prospective cancer treatment method, but the inefficient Fe/Fe conversion restricts the monotherapeutic performances. Here, an iron-based nanoplatform (FeO-SRF@FeTA) including a magnetic core and a reductive film is developed for combined CDT and photothermal therapy (PTT) through ferroptosis augmentation. The inner iron oxide core serves as a photothermal transducer, a magnet-responsive module, and an iron reservoir for CDT.