RT Journal Article
T1 Synthesis, characterization and electrochemical assessment of hexagonal molybdenum trioxide (h-MoO3) micro-composites with graphite, graphene and graphene oxide for lithium ion batteries
A1 Almodóvar Losada, Paloma
A1 López García, María Luisa
A1 Ramírez Castellanos, Julio
A1 Nappini, Silvia
A1 Magnano, Elena
A1 González Calbet, José María
A1 Díaz-Guerra Viejo, Carlos
AB Hexagonal molybdenum trioxide (h-MoO3) microrods and their composites with graphite, graphene and graphene oxide (GO) are successfully synthesized by a soft chemistry route. The structural, compositional and electronic characteristics of the samples, investigated by a wide range of experimental techniques, evidence that the properties of the carbon material are preserved while yielding phase pure, highly crystalline oxide microstructures. h-MoO3 graphene and GO composites show excellent performance as Li ion batteries (LIBs) anodes. Precisely, h-MoO3 - GO electrodes deliver a remarkable specific capacity of 789 mA h g − 1 after 100 cycles at a high current density of 1000 mA g − 1, while h-MoO3 - graphene electrodes show an excellent stability at very high current densities, with specific capacities of 665 mA h g − 1 and 490 mA h g − 1 at 2000 and 3000 mA g − 1. The uniformly dispersed graphene and GO layers increase the structural stability of the composites and create a conductive network ensuring effective ambipolar diffusion of electrons and Li+ ions, as revealed by electrochemical impedance spectroscopy measurements and scanning electron microscopy of the cycled electrodes. These results expand the potential applications of h-MoO3 composites towards LIBs, paving the way for future improvements in this energy storage field.
PB Elsevier
SN 0013-4686
YR 2020
FD 2020-10-28
LK https://hdl.handle.net/20.500.14352/113209
UL https://hdl.handle.net/20.500.14352/113209
LA eng
NO Paloma Almodóvar, María Luisa López, Julio Ramírez-Castellanos, Silvia Nappini, Elena Magnano, José M. González-Calbet, Carlos Díaz-Guerra, Synthesis, characterization and electrochemical assessment of hexagonal molybdenum trioxide (h-MoO3) micro-composites with graphite, graphene and graphene oxide for lithium ion batteries, Electrochimica Acta, Volume 365, 2021,137355. https://doi.org/10.1016/j.electacta.2020.137355.
NO Ministerio de Economía, Comercio y Empresa
NO Banco Santander
NO Universidad Complutense de Madrid
DS Docta Complutense
RD 13 abr 2025