Abstract
A novel technique has been developed to directly produce fine ceramic powders from liquid solution via spray pyrolysis in a fluidized bed reactor (SPFBR). Using this technique the preparation of LiM0.15Mn1.85O4 (M = Mn, Co, Al, and Fe), which are the most promising cathode materials for lithium-ion batteries, has been carried out at a superficial velocity U0 of 0.71 m/s, a reactor temperature T of 800°C, and a static bed height Ls of 100 mm. The as-prepared powders were spherical nanostructured particles that comprised primary particles of a few tens of nanometers in size, and they exhibited a pure cubic spinel structure without any impurities in the XRD patterns. The chemical composition of as-prepared samples showed good agreement with the theoretical values that proved stoichiometric formulae of the compounds. The specific surface area of as-prepared LiM0.15Mn1.85 O4 (M = Mn, Co, Al, and Fe) powders decreases with increasing the static bed height in each doping metal, while the crystallite size increases with the static bed height. As a result, the as-prepared powders showed larger crystallite size and smaller specific surface area than those prepared by conventional spray pyrolysis.
| Original language | English |
|---|---|
| Pages (from-to) | 1292-1301 |
| Number of pages | 10 |
| Journal | Chemical Engineering Communications |
| Volume | 195 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - Sep 2008 |
| Externally published | Yes |
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Keywords
- Cathode
- Fluidized bed reactor
- Lithium-ion batteries
- Nanostructured particles
- Spray pyrolysis
- Substituted manganese spinels
ASJC Scopus subject areas
- Chemical Engineering(all)
Cite this
Synthesis of nanostructured LiM0.15Mn1.85 5O4 (M = Mn, Co, Al, and Fe) particles by spray pyrolysis in a fluidized bed reactor. / Taniguchi, Izumi; Nakajima, Shinya; Bakenov, Zhumabay.
In: Chemical Engineering Communications, Vol. 195, No. 10, 09.2008, p. 1292-1301.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Synthesis of nanostructured LiM0.15Mn1.85 5O4 (M = Mn, Co, Al, and Fe) particles by spray pyrolysis in a fluidized bed reactor
AU - Taniguchi, Izumi
AU - Nakajima, Shinya
AU - Bakenov, Zhumabay
PY - 2008/9
Y1 - 2008/9
N2 - A novel technique has been developed to directly produce fine ceramic powders from liquid solution via spray pyrolysis in a fluidized bed reactor (SPFBR). Using this technique the preparation of LiM0.15Mn1.85O4 (M = Mn, Co, Al, and Fe), which are the most promising cathode materials for lithium-ion batteries, has been carried out at a superficial velocity U0 of 0.71 m/s, a reactor temperature T of 800°C, and a static bed height Ls of 100 mm. The as-prepared powders were spherical nanostructured particles that comprised primary particles of a few tens of nanometers in size, and they exhibited a pure cubic spinel structure without any impurities in the XRD patterns. The chemical composition of as-prepared samples showed good agreement with the theoretical values that proved stoichiometric formulae of the compounds. The specific surface area of as-prepared LiM0.15Mn1.85 O4 (M = Mn, Co, Al, and Fe) powders decreases with increasing the static bed height in each doping metal, while the crystallite size increases with the static bed height. As a result, the as-prepared powders showed larger crystallite size and smaller specific surface area than those prepared by conventional spray pyrolysis.
AB - A novel technique has been developed to directly produce fine ceramic powders from liquid solution via spray pyrolysis in a fluidized bed reactor (SPFBR). Using this technique the preparation of LiM0.15Mn1.85O4 (M = Mn, Co, Al, and Fe), which are the most promising cathode materials for lithium-ion batteries, has been carried out at a superficial velocity U0 of 0.71 m/s, a reactor temperature T of 800°C, and a static bed height Ls of 100 mm. The as-prepared powders were spherical nanostructured particles that comprised primary particles of a few tens of nanometers in size, and they exhibited a pure cubic spinel structure without any impurities in the XRD patterns. The chemical composition of as-prepared samples showed good agreement with the theoretical values that proved stoichiometric formulae of the compounds. The specific surface area of as-prepared LiM0.15Mn1.85 O4 (M = Mn, Co, Al, and Fe) powders decreases with increasing the static bed height in each doping metal, while the crystallite size increases with the static bed height. As a result, the as-prepared powders showed larger crystallite size and smaller specific surface area than those prepared by conventional spray pyrolysis.
KW - Cathode
KW - Fluidized bed reactor
KW - Lithium-ion batteries
KW - Nanostructured particles
KW - Spray pyrolysis
KW - Substituted manganese spinels
UR - http://www.scopus.com/inward/record.url?scp=45749138012&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=45749138012&partnerID=8YFLogxK
U2 - 10.1080/00986440801943446
DO - 10.1080/00986440801943446
M3 - Article
VL - 195
SP - 1292
EP - 1301
JO - Chemical Engineering Communications
JF - Chemical Engineering Communications
SN - 0098-6445
IS - 10
ER -