The Enhanced Lithium-Storage Performance for MnO Nanoparticles Anchored on Electrospun Nitrogen-Doped Carbon Fibers

• Published in: Nanomaterials (Basel, Switzerland) Switzerland), 2018-09, Vol.8 (9), p.733
• Main Authors: Zhang, Rui, Dong, Xue, Peng, Lechao, Kang, Wenjun, Li, Haibo
• Format: Article
• Language: English
• Subjects: Anodes; Carbon; Carbon fibers; Carbon monoxide; Composite materials; cyclic stability; Electrode materials; Electrodes; Electrospinning; Fibers; Graphite; Ion diffusion; Li-ion battery; Lithium; Lithium-ion batteries; Manganese; manganese monoxide; Manganese oxides; Nanomaterials; Nanoparticles; Nitrogen; rate capability; Rechargeable batteries; Scanning electron microscopy; Temperature effects
• ISSN: 2079-4991; 2079-4991
• DOI: 10.3390/nano8090733

Manganese monoxide (MnO) is a promising anode material in the lithium-ion battery for its high capacity, low operation potential, and environmental benignity. However, its application is impeded by poor rate capability and rapid capacity fading. In this work, a MnO/carbon hybrid material, in which small-sized MnO nanoparticles are tightly anchored on carbon fibers (denoted as MnO@CFs), was prepared by annealing the electrospun precursor fibers at 650 °C. When applied as the anode material of the Li-ion battery, the small size of MnO shortens the Li-ion diffusion path, and the carbon fibers not only greatly improve the conductivity but also efficiently buffer the MnO structure strain during the charge⁻discharge process, endowing the MnO@CFs electrode with a good rate capability (185 mAh g at 5 A g ) and cyclic stability (406 mAh g after 500 cycles at 1.0 A g ).