Synthesis and characterization of Co₃O₄ nanoparticles: Application as performing anode in Li‐ion batteries

Abstract

A simple, rapid, and low‐cost method for preparation of Co3O4 nanoparticles (Co3O4‐1 and Co3O4‐2) using solid‐state calcination of mixture of Co(NO3)2∙6H2O and salicylic acid (1:1 weight ratio) at two different temperatures of 500 and 600°C is reported. The morphologies and structure of the as‐prepared Co3O4 nanoparticles were characterized using X‐ray diffraction (XRD) and transmission electron microscope (TEM). In addition, we tested them as an anode material for lithium‐ion batteries. The cycling stability and electrochemical performance of the as‐prepared Co3O4 nanoparticles were excellent. A capacity of ≈1,100 mAh/g was obtained after 50 cycles at 100 mA/g and exhibited stable discharge behavior up to 50 cycles with high rate capability.

Photodynamic therapy in cancer treatment: properties and applications in nanoparticles

“…Wieder and colleagues also made a comparison between gold and silica nanoparticles. He expected that the photosynthesizer on the surface of gold nanoparticles was more efficient than the photosynthesizer inside silica particles (regardless of the 1 O2 emission from the particles) (Bahadoran et al, 2022;Mahmood et al, 2022). Metal nanoparticles smaller in size than silica particles.…”