HxMoO3@C nanobelts: Green synthesis and superior lithium storage properties

• Published in: International journal of hydrogen energy 2015-03, Vol.40 (9), p.3613-3623
• Main Authors: Song, Yeping, Wang, Hai, Li, Zihua, Ye, Naiqing, Wang, Linjiang, Liu, Yong
• Format: Article
• Language: English
• Subjects: Anode material; Hydrogen molybdenum bronzes; Insertion; Lithium-ion batteries; Nanobelts
• ISSN: 0360-3199; 1879-3487
• DOI: 10.1016/j.ijhydene.2015.01.027

MoO3 could be a promising high capacity anode material for lithium ion batteries (LIBs). However, its applications have been hindered by its poor electronic conductivity. To address these issues, in this work, HxMoO3@C nanobelts were synthesized by mild hydrothermal treatment of precursor MoO3 nanobelts only with the assistance of glucose and ethanol. Subsequently, a catalysis-insertion model was proposed to describe the formation of HxMoO3 nanobelts. When tested as LIBs anodes, the superior reversible capacities of LIBs anodes were realized from HxMoO3@C nanobelts. The HxMoO3@C nanobelts electrode exhibited superior reversible capacity of 480 mAh g−1 retained at 200 mA g−1 after 100 cycles, and a superior rate capacity of 337 mAh g−1 retained after 100 cycles at 500 mA g−1. The superior performance achieved in HxMoO3@C nanobelts anode system are attributed to the synergistic effect of the conductive HxMoO3, the enlargement of interplanar spacing and uniform carbon coating shell. [Display omitted] •The HxMoO3@C nanobelts are synthesized via green reduction-insertion method for the first time.•The electrochemical behavior of HxMoO3@C nanobelt is investigated.•Carbon coating and hydrogen insertion are achieved simultaneously.•The HxMoO3@C nanobelts anode material shows good electrochemical properties.