Journal
MATERIALS TODAY ADVANCES
Volume 1, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.mtadv.2018.12.001
Keywords
Lithium-ion batteries cathode; Lithium manganese oxide; Graphene nanosheets; Nanocomposite
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Funding
- MoST, China [2016YFA0200200]
- National Program on Key Basic Research Project (973 Program) [2013CB933804]
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Spinel LiMn2O4 nanoparticles (NPs) loaded on reduced graphene oxide are prepared via a facile one-pot solvothermal method. The samples are characterized by transmission electron microscopy, Fouriertransform infrared spectroscopy, Raman spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and thermogravimetry analysis. The resultant LiMn2O4-reduced graphene oxide nanocomposites material shows better performances as cathode for lithium-ion batteries than pure LiMn2O4 or physical mixing of LiMn2O4 and reduced graphene oxide. The LiMn2O4-reduced graphene oxide retains about 110 mAh g(-1) at 0.5 C after 150 cycles, indicating a better cycling stability than pure LiMn2O4 electrode. The resistance of the LiMn2O4-reduced graphene oxide nanocomposite cell presents great reduction due to the existence of reduced graphene oxide. The wrapping of reduced graphene oxide on LiMn2O4 NPs provides a few-layer conduct fishnet structure, which can greatly shorten the electron transfer path. This work shows the potential applications of the LiMn2O4-reduced graphene oxide as cathode material for high-power lithium-ion batteries. (c) 2018 Published by Elsevier Ltd.
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