Comparative analysis of LiCoPO4 cuboid particles via various microwave-assisted procedures for high energy density lithium ion batteries
Journal
Ceramics International
ISSN
0272-8842
Date Issued
2024-11
Author(s)
DOI
10.1016/j.ceramint.2024.11.175
Abstract
LiCoPO4 powders were synthesized via the microwave-assisted reaction using aqueous and microemulsion solutions in the present study. The morphology of prepared LiCoPO4 powders changed from cubic microparticles to cuboid nanoparticles when the microemulsion solution was used instead of aqueous solution as a precursor. The change in morphology of LiCoPO4 particles was ascribed to the selective adsorption property of the surfactant used in the microemulsion solution. Furthermore, the adjustment of surfactant ratios in the microemulsion solution effectively suppressed the growth of LiCoPO4 particles along the [010] direction, thereby reducing the particle size. The charge transfer resistance of prepared electrodes based on LiCoPO4 cuboid nanoparticles was found to be around 57.04 Ω, which was one half of the resistance of LiCoPO4 samples synthesized via the microwave-assisted hydrothermal process. Furthermore, the discharge capacity of the sample obtained from the present process was 138 mAh/g, which was 1.76 times higher than the hydrothermally synthesized samples. The galvanostatic intermittent technique analysis (GITT) revealed a high diffusion coefficient of LiCoPO4 materials with cuboid morphology. The obtained results demonstrated that the microwave-assisted microemulsion process for the synthesis of olivine-structured materials improved the electrochemical properties of LiCoPO4 powders.
Subjects
Cuboid nanoparticle
Discharge capacity
Galvanostatic intermittent technique analysis
LiCoPO4
Microwave
SDGs
Publisher
Elsevier BV
Type
journal article