Promising electrochemical performance of Cu3Mo2O9 nanorods for lithium-ion batteries

• Published in: Journal of materials science 2017-10, Vol.52 (20), p.12380-12389
• Main Authors: Li, Jia-Chuang, Feng, Fang, Yang, Si-Han, Gu, Yu-Ren, Xue, Huai-Guo, Guo, Sheng-Ping
• Format: Article
• Language: English
• Subjects: Anodes; Characterization and Evaluation of Materials; Chemistry and Materials Science; Classical Mechanics; Crystallography and Scattering Methods; Electrochemical analysis; Electrode materials; Energy Materials; Heat treatment; Lithium; Lithium-ion batteries; Materials Science; Nanorods; Polymer Sciences; Rechargeable batteries; Solid Mechanics; X ray photoelectron spectroscopy
• ISSN: 0022-2461; 1573-4803
• DOI: 10.1007/s10853-017-1360-7

Cu 3 Mo 2 O 9 nanorods (NRs) have been prepared via a facile hydrothermal method with subsequent heat treatment. The sample is characterized by the XRD, SEM, TEM, and XPS techniques. The results indicate that Cu 3 Mo 2 O 9 NRs crystallize in the orthorhombic space group Pnma and have the diameters at around 100 nm. As the anode material for lithium-ion batteries, Cu 3 Mo 2 O 9 NRs can deliver an initial discharge capacity of 1209 mAh/g at a current density of 300 mA/g in the potential window of 0.005–3 V, and a reversible capacity of 440 mAh/g can be maintained after 400 cycles. Furthermore, Cu 3 Mo 2 O 9 NRs still have the capacity of 437 mAh/g even at 1 A/g. The improved electrochemical performance of Cu 3 Mo 2 O 9 can be attributed to the effect of enhanced contact area and shortened Li + ions’ transport distance between the Cu 3 Mo 2 O 9 NRs and the electrolyte.