Issue 42, 2009

Facile synthesis of NaV6O15nanorods and its electrochemical behavior as cathode material in rechargeable lithium batteries

Abstract

A ternary vanadium bronze compound, NaV6O15 (Na0.33V2O5), constructed by highly ordered nanorod structures, was facilely synthesized via a low temperature hydrothermal route using V2O5, H2O2 and NaCl as the precursors. A reaction mechanism involved in present hydrothermal condition was tentatively proposed. The sample was systemically post-treated at different temperatures and well characterized by various techniques. It was found that the prepared NaV6O15 nanorods had a highly crystallined single phase with a preferred c* orientation growth. When used as the cathode material in rechargeable lithium batteries, the NaV6O15 nanorods exhibited stable lithium-ion insertion/deinsertion reversibility and delivered as high as 328 mAh g−1 lithium cycled at the current density of 0.02 A g−1. In galvanostatic cycling test, a specific discharge capacity of around 300 mAh g−1 could be demonstrated for 70 cycles under 0.05 A g−1 current density. According to its unique crystallographic structure and electrochemical characteristics, it is therefore expected that as-prepared NaV6O15 nanorods may be employed as cathode material in rechargeable lithium, sodium-based batteries.

Graphical abstract: Facile synthesis of NaV6O15 nanorods and its electrochemical behavior as cathode material in rechargeable lithium batteries

Supplementary files

Article information

Article type
Paper
Submitted
01 Jul 2009
Accepted
25 Aug 2009
First published
18 Sep 2009

J. Mater. Chem., 2009,19, 7885-7891

Facile synthesis of NaV6O15 nanorods and its electrochemical behavior as cathode material in rechargeable lithium batteries

H. Liu, Y. Wang, L. Li, K. Wang, E. Hosono and H. Zhou, J. Mater. Chem., 2009, 19, 7885 DOI: 10.1039/B912906E

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