Template Free Synthesis of LiV3O8 Nanorods as a Cathode Material for High-Rate Secondary Lithium Batteries
A novel low temperature method of preparing LiV3O8 as cathode material for high power secondary lithium batteries by thermal co-decomposition lithium and vanadium sources precursors is reported. TG and DTA are used to investigate the thermal decomposition process; XRD, SEM and TEM experiments are carried out to characterize the structural of LiV3O8. As-fabricated LiV3O8 nanorod crystallites are quite uniform and the diameter of which is less than 50 nm. It delivers a maximum specific discharge capacity of 320 mAh g-1 at current density of 100 mA g-1, which is much higher than that of conventional high temperature method fabricated LiV3O8 electrode. Even at higher rate (1 A g-1), it still has an initial specific discharge capacity of 250 mAh g-1. The specific capacity becomes quite stable after initial cycles only with 0.34%, 0.31% and 0.29% fading per cycle under current densities of 100, 300 and 1000 mA g-1 for the later cycles, respectively. The reduced dimension of the particle size is attributed to the reason for the good electrochemical performance. The results demonstrate as-synthesized nanorod LiV3O8 crystallites are promising cathode material for high power lithium batteries.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1004022
- Report Number(s):
- PNNL-SA-73809; JMACEP; 30490; TRN: US201103%%261
- Journal Information:
- Journal of Materials Chemistry, 21(4):1153-1161, Vol. 21, Issue 4; ISSN 0959-9428
- Country of Publication:
- United States
- Language:
- English
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