Abstract
Spinel-type lithium titanate (Li4Ti5O12) nanocrystals were synthesized at a low temperature with control of the basicity by a solvothermal method without any calcination processes. The Li-Ti-O precursor was produced under relatively high pH conditions (pH > 11) in the initial stage. The spinel phase was then formed through delithiation and dehydration from the precursor by lowering the pH of the system (pH < 10). The direct synthesis of the Li4Ti5O12 nanocrystals was achieved through self-control of the basicity using a two-phase system of water-ethanol and toluene-oleic acid. The Li4Ti5O12 crystals were formed from the precursor by decreasing the basicity. The average size of the nanocrystals prepared by the one-step method was ca. 13 nm, and the specific surface area was 158 m2 g-1. On the basis of the electrochemical measurement, the Li4Ti5O12 nanocrystals produced in a low-temperature solution system are applicable for an anode material of a lithium-ion rechargeable battery.
| Original language | English |
|---|---|
| Pages (from-to) | 44124-44129 |
| Number of pages | 6 |
| Journal | RSC Advances |
| Volume | 4 |
| Issue number | 83 |
| DOIs | |
| Publication status | Published - 2014 |
Fingerprint
ASJC Scopus subject areas
- Chemical Engineering(all)
- Chemistry(all)
Cite this
Basicity-controlled synthesis of Li4Ti5O12 nanocrystals by a solvothermal method. / Kageyama, Hiroyuki; Oaki, Yuya; Imai, Hiroaki.
In: RSC Advances, Vol. 4, No. 83, 2014, p. 44124-44129.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Basicity-controlled synthesis of Li4Ti5O12 nanocrystals by a solvothermal method
AU - Kageyama, Hiroyuki
AU - Oaki, Yuya
AU - Imai, Hiroaki
PY - 2014
Y1 - 2014
N2 - Spinel-type lithium titanate (Li4Ti5O12) nanocrystals were synthesized at a low temperature with control of the basicity by a solvothermal method without any calcination processes. The Li-Ti-O precursor was produced under relatively high pH conditions (pH > 11) in the initial stage. The spinel phase was then formed through delithiation and dehydration from the precursor by lowering the pH of the system (pH < 10). The direct synthesis of the Li4Ti5O12 nanocrystals was achieved through self-control of the basicity using a two-phase system of water-ethanol and toluene-oleic acid. The Li4Ti5O12 crystals were formed from the precursor by decreasing the basicity. The average size of the nanocrystals prepared by the one-step method was ca. 13 nm, and the specific surface area was 158 m2 g-1. On the basis of the electrochemical measurement, the Li4Ti5O12 nanocrystals produced in a low-temperature solution system are applicable for an anode material of a lithium-ion rechargeable battery.
AB - Spinel-type lithium titanate (Li4Ti5O12) nanocrystals were synthesized at a low temperature with control of the basicity by a solvothermal method without any calcination processes. The Li-Ti-O precursor was produced under relatively high pH conditions (pH > 11) in the initial stage. The spinel phase was then formed through delithiation and dehydration from the precursor by lowering the pH of the system (pH < 10). The direct synthesis of the Li4Ti5O12 nanocrystals was achieved through self-control of the basicity using a two-phase system of water-ethanol and toluene-oleic acid. The Li4Ti5O12 crystals were formed from the precursor by decreasing the basicity. The average size of the nanocrystals prepared by the one-step method was ca. 13 nm, and the specific surface area was 158 m2 g-1. On the basis of the electrochemical measurement, the Li4Ti5O12 nanocrystals produced in a low-temperature solution system are applicable for an anode material of a lithium-ion rechargeable battery.
UR - http://www.scopus.com/inward/record.url?scp=84907652951&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84907652951&partnerID=8YFLogxK
U2 - 10.1039/c4ra06646d
DO - 10.1039/c4ra06646d
M3 - Article
AN - SCOPUS:84907652951
VL - 4
SP - 44124
EP - 44129
JO - RSC Advances
JF - RSC Advances
SN - 2046-2069
IS - 83
ER -