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 |
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All Science Journal Classification (ASJC) codes
- Electrochemistry
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Highly dispersed LaCoO3 on carbon prepared via low-energy bead milling as an oxygen reduction electrocatalyst. / Tachibana, Naoki; Kobayashi, Hiroki; Somekawa, Shoichi; Shimanoe, Kengo.
In: Electrochemistry, Vol. 87, No. 3, 05.05.2019, p. 193-195.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Highly dispersed LaCoO3 on carbon prepared via low-energy bead milling as an oxygen reduction electrocatalyst
AU - Tachibana, Naoki
AU - Kobayashi, Hiroki
AU - Somekawa, Shoichi
AU - Shimanoe, Kengo
PY - 2019/5/5
Y1 - 2019/5/5
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85065767037&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85065767037&partnerID=8YFLogxK
U2 - 10.5796/electrochemistry.18-00094
DO - 10.5796/electrochemistry.18-00094
M3 - Article
AN - SCOPUS:85065767037
VL - 87
SP - 193
EP - 195
JO - Electrochemistry
JF - Electrochemistry
SN - 1344-3542
IS - 3
ER -