Carbon nanotube-wired and oxygen-deficient MoO3 nanobelts with enhanced lithium-storage capability

• Published in: Journal of power sources Vol. 247; pp. 90 - 94
• Main Authors: Ni, Jiangfeng, Wang, Guibin, Yang, Juan, Gao, Dongliang, Chen, Jitao, Gao, Lijun, Li, Yan
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier 01.02.2014
• Subjects: Applied sciences; Direct energy conversion and energy accumulation; Electrical engineering. Electrical power engineering; Electrical power engineering; Electrochemical conversion: primary and secondary batteries, fuel cells; Exact sciences and technology; Lithium ion batteries; Carbon nanotube; Oxygen deficient; Conductometry; Lithium storage; Carbon nanotubes; Nanobelt; Conductivity; Molybdenum oxide; Secondary cell; Nanostructure; Molybdenum Oxides
• ISSN: 0378-7753; 1873-2755
• DOI: 10.1016/j.jpowsour.2013.08.068

Carbon nanotube (CNT) wired and oxygen-deficient MoO3-x/CNT structures are fabricated via a facile hydrothermal reaction followed by controlled reduction in Ar/H2. The MoO3-x/CNT, which consists of 63 mol% MoO3 and 37 mol% MoO2, exhibits a much improved Li-storage property compared with the original MoO3/CNT structure when evaluated as an anode in the 0.05-3.0 V region. It is able to retain a capacity of 421 mAh g-1 towards Li after 100 cycles at 200 mA g-1, and deliver 293 and 202 mAh g-1 at current densities of 2 and 4 A g-1, respectively. It is suggested that the formation and recovery of a metallic MoO2 phase over the conversion reaction may account for the enhanced performance.