Abstract
In this study, fine dispersion of LaCoO3 nanoparticles on carbon via low-energy bead milling was attempted. X-ray diffraction and scanning transmission electron microscopy revealed that LaCoO3 nanoparticle agglomerates formed by high-temperature calcination were broken up by milling with small beads at low rotation rate, while suppressing damage to the crystal structure. The low-energy bead-milled LaCoO3/carbon exhibited 2.7 times higher kinetic current density for the oxygen reduction at −0.15 V vs. Hg/HgO than as-synthesized LaCoO3/carbon; this enhancement may be attributed to the enlarged surface area and improved dispersion of the oxide on carbon.
Original language | English |
---|---|
Pages (from-to) | 193-195 |
Number of pages | 3 |
Journal | Electrochemistry |
Volume | 87 |
Issue number | 3 |
DOIs | |
Publication status | Published - May 5 2019 |
All Science Journal Classification (ASJC) codes
- Electrochemistry