Hydrothermal synthesis of Li4Ti5O12 nanoparticles using a supercritical flow reaction system
Source abstract
Abstract
The cubic Li4Ti5O12 nanoparticles were continuously synthesized in supercritical water using a flow hydrothermal reaction system. Ti-sols(M-6, A-6) and Ti(SO4)2 were used as the Ti source. Initial Li/Ti molar ratio was varied with the LiOH concentrations. The syntheses were carried out at temperatures from 350 to 410°C, at pressure of 30 MPa, and for residence times from 10 to 26 s. X-ray diffraction (XRD), transmission electron microscopy (TEM), BET surface area, and Dynamic light scattering (DLS) technique were used to characterize the samples. Single phase of Li4Ti5O12 was achieved under supercritical conditions at initial Li/Ti molar ratio >2.5 from Ti-sol(M-6) and >2 from Ti-sol(A-6), respectively, whereas single phase was not obtained from Ti(SO4)2 solution even at initial Li/Ti molar ratio of 10. It requires the pH range over 12 to prepare the single phase Li4Ti5O12. As-synthesized samples exhibited the diffuse scattering (111) and missing (311) reflections due to a disorder in Ti–O framework, whereas the presence of these two reflections indicates reordering of the Ti sublattice after annealing.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advancements in Battery Materials · Extraction and Separation Processes · Chemical Synthesis and Characterization
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Research Center for Compact Chemical System, National Institute of Advanced Industrial Science and Technology
References (17)
Show source-provided references
1. 1) M. S. Whittingham, Chem. Rev., 104, 4271–4302 (2004).10.1021/cr020731c ↗
2. 2) P. G. Bruce, B. Scrosati and J. M. Tarascon, Angew. Chem. Int. Ed., 47, 2930–2946 (2008).10.1002/anie.200702505 ↗
3. 3) T.-F. Yi, L.-J. Jiang, J. Shu, C.-B. Yue, R.-S. Zhu and H.-B. Qiao, J. Phys. Chem. Solids, 71, 1236–1242 (2010).10.1016/j.jpcs.2010.05.001 ↗
4. 4) J. Chen, L. Yang, S. Fang and Y. Tang, Electrochim. Acta, 55, 6596–6600 (2010).10.1016/j.electacta.2010.06.015 ↗
5. 5) J. Chen, L. Yang, S. Fang, S. Hirano and K. Tachibana, J. Power Sources, 200, 59–66 (2012).10.1016/j.jpowsour.2011.10.052 ↗
6. 6) J. Lu, C. Nan, Q. Peng and Y. Li, J. Power Sources, 202, 246–252 (2012).10.1016/j.jpowsour.2011.11.032 ↗
7. 7) Y.-S. Lin, M.-C. Tsai and J.-G. Duh, J. Power Sources, 214, 314–318 (2012).10.1016/j.jpowsour.2012.04.072 ↗
8. 8) T. Ueda and N. Yamamoto, J. Electrochem. Soc., 142, 1431–1435 (1995).10.1149/1.2048592 ↗
9. 9) K. Zaghib, M. Simoneau, M. Armand and M. Gauthier, J. Power Sources, 81–82, 300–305 (1999).10.1016/S0378-7753(99)00209-8 ↗
10. 10) G. Hasegawa, K. Kanamori, Y. Sugawara, Y. Ikuhara and K. Nakanishi, J. Colloid Interface Sci., 374, 291–296 (2012).10.1016/j.jcis.2012.02.002 ↗
11. 11) D. Fattakhova, V. Petrykin, J. Brus, T. Kostlanova, J. Dedecek and P. Krtil, Solid State Ionics, 176, 1877–1885 (2005).10.1016/j.ssi.2005.05.013 ↗
12. 12) T. Kostlanova, J. Dedecek and P. Krtil, Electrochim. Acta, 52, 1847–1856 (2007).10.1016/j.electacta.2006.07.048 ↗
13. 13) T. Kostlanova, M. V. Makarova and P. Krtil, J. Mater. Res., 23, 1136–1146 (2008).10.1557/jmr.2008.0145 ↗
14. 14) N. Li, T. Mei and Y. Zhu, Cryst. Eng. Comm, 14, 6435–6644 (2012).
15. 15) A. Nugroho, S. J. Kim, K. Y. Chung, B.-W. Cho, Y.-W. Lee and J. Kim, Electrochem. Commun., 13, 650–653 (2011).10.1016/j.elecom.2011.03.037 ↗
16. 16) A. Nugroho, S. J. Kim, K. Y. Chung and J. Kim, Electrochim. Acta, 78, 623–632 (2012).10.1016/j.electacta.2012.06.060 ↗
17. 17) A. Laumann, M. Bremholm, P. Hald, M. Holzafel, K. T. Fehr and B. B. Iversen, J. Electrochem. Soc., 159, A166–A171 (2012).10.1149/2.084202jes ↗