Surfactant-free self-assembly of reduced graphite oxide-MoO2 nanobelt composites used as electrode for lithium-ion batteries
MetadataShow full item record
Graphene/metal oxide nanocomposites are promising electrode materials for lithium-ion batteries (LIBs), in which synergistic effects between the two components may benefit the overall capacity, rate capability and cycling stability. Here, we report a simple and easy scale-up method for the preparation of high-quality reduced graphite oxide-MoO2 (rGO-MoO2) nanobelt composites, which demonstrate attractive electrochemical performance as LIB anodes. MoO3 nanobelts are first prepared by a simple hydrothermal route and distributed homogeneously in water, and then graphite oxide (GO) is prepared by a modified Hummers method and introduced into the solution. Both materials slowly self-assemble to form GO-MoO3 nanocomposite in a surfactant-free manner. After thermal reduction, rGO-MoO2 nanobelt composites are obtained, as confirmed by FE-SEM and TEM. Using such composite as LIB electrodes, a reversible capacity of 754 mA h g-1 is obtained after 80 cycles at 0.2 A g-1, and the electrode also demonstrates superior rate capabilities. These results are comparable to or even higher than those of other reported graphene-MoO2 composites, which are fabricated in more complicated fashions, thus rendering the current product as highly promising electrode materials for practical use.
Showing items related by title, author, creator and subject.
Assessment of PrBaCo<inf>2</inf>O<inf>5+d</inf> + Sm <inf>0.2</inf>Ce<inf>0.8</inf>O<inf>1.9</inf> composites prepared by physical mixing as electrodes of solid oxide fuel cellsChen, D.; Ran, R.; Shao, Zongping (2010)The performance of PrBaCo2O5+d + Sm 0.2Ce0.8O1.9 (PrBC + SDC) composites as electrodes of intermediate-temperature solid oxide fuel cells is investigated. The effects of SDC content on the performance and properties of ...
A double-layer composite electrode based on SrSc0.2Co0.8O3-d perovskite with improved performance in intermediate temperature solid oxide fuel cellsAn, B.; Guo, Y.; Ran, R.; Shao, Zongping (2010)Dual-layer composite electrodes consisting of a layer adjoining to an Sm0.2Ce0.8O1.9 (SDC) electrolyte composed of 70 wt.% SrSc0.2Co0.8O3-d + 30 wt.% Sm0.2Ce0.8O1.9 (SScC + SDC composite) and a second layer composed of ...
Yang, Guangming; Su, Chao; Ran, Ran; Tade, Moses; Shao, Zongping (2014)Advanced symmetric solid oxide fuel cells (SOFCs) with a reducible electrode were proposed. Specifically, La2NiO4 + La0.9Sr0.1Ga0.8Mg0.2O3-delta (LSGM) [or Sm0.2Ce0.8O1.9 (SDC)] composite electrodes were successfully ...