Walnut-Like Multicore–Shell MnO Encapsulated Nitrogen-Rich Carbon Nanocapsules as Anode Material for Long-Cycling and Soft-Packed Lithium-Ion Batteries

Journal Article (Journal Article)

Metal oxide-based nanomaterials are widely studied because of their high-energy densities as anode materials in lithium-ion batteries. However, the fast capacity degradation resulting from the large volume expansion upon lithiation hinders their practical application. In this work, the preparation of walnut-like multicore–shell MnO encapsulated nitrogen-rich carbon nanocapsules (MnO@NC) is reported via a facile and eco-friendly process for long-cycling Li-ion batteries. In this hybrid structure, MnO nanoparticles are uniformly dispersed inside carbon nanoshells, which can simultaneously act as a conductive framework and also a protective buffer layer to restrain the volume variation. The MnO@NC nanocapsules show remarkable electrochemical performances for lithium-ion batteries, exhibiting high reversible capability (762 mAh g−1 at 100 mA g−1) and stable cycling life (624 mAh g−1 after 1000 cycles at 1000 mA g−1). In addition, the soft-packed full batteries based on MnO@NC nanocapsules anodes and commercial LiFePO4 cathodes present good flexibility and cycling stability.

Full Text

Duke Authors

Cited Authors

  • Zhu, G; Wang, L; Lin, H; Ma, L; Zhao, P; Hu, Y; Chen, T; Chen, R; Wang, Y; Tie, Z; Liu, J; Jin, Z

Published Date

  • May 4, 2018

Published In

Volume / Issue

  • 28 / 18

Electronic International Standard Serial Number (EISSN)

  • 1616-3028

International Standard Serial Number (ISSN)

  • 1616-301X

Digital Object Identifier (DOI)

  • 10.1002/adfm.201800003

Citation Source

  • Scopus