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Pomegranate-like CoO@nitrogen-doped carbon microspheres with outstanding rate behavior and stability for lithium storage

Abstract

Rational design and preparation of CoO-based materials with excellent electrochemical performances for lithium ion batteries (LIBs) are highly desirable. In this work, we develop a CoO-based material with novel pomegranate-like microspherical structure, in which ultrafine CoO nanoparticles coupled with carbon framework are intimately confined within N-doped carbon outer shells (denoted as CoO@NC). Such robust pomegranate-like architecture can not only facilitate the electron/mass transport in CoO/carbon electrode to boost rate capability, but also minimize aggregation of CoO microstructures to prolong cycle life during the electrochemical process. Correspondingly, the CoO@NC nanocomposite manifests high capacity of around 1200 mAh g−1 at 0.1 C, excellent cycling stability up to 150 cycles, and superior rate capability of 533 mAh g−1 at 10 C as an anode material for LIBs.

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Publication details

The article was received on 31 Jan 2017, accepted on 13 Apr 2017 and first published on 13 Apr 2017


Article type: Paper
DOI: 10.1039/C7TA00983F
Citation: J. Mater. Chem. A, 2017, Accepted Manuscript
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    Pomegranate-like CoO@nitrogen-doped carbon microspheres with outstanding rate behavior and stability for lithium storage

    G. Liu and J. Shao, J. Mater. Chem. A, 2017, Accepted Manuscript , DOI: 10.1039/C7TA00983F

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