Issue 20, 2017

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

Abstract

The 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 a novel pomegranate-like microspherical structure, in which ultrafine CoO nanoparticles coupled with a carbon framework are intimately confined within N-doped carbon outer shells (denoted as CoO@NC). Such a robust pomegranate-like architecture can not only facilitate the electron/mass transport in CoO/carbon electrodes to boost rate capability, but can also minimize aggregation of CoO microstructures to prolong their cycle life during the electrochemical process. Correspondingly, the CoO@NC nanocomposite manifests a high capacity of around 1200 mA h gāˆ’1 at 0.1C, excellent cycling stability up to 150 cycles, and a superior rate capability of 533 mA h gāˆ’1 at 10C as an anode material for LIBs.

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

Supplementary files

Article information

Article type
Paper
Submitted
31 Jan 2017
Accepted
13 Apr 2017
First published
13 Apr 2017

J. Mater. Chem. A, 2017,5, 9801-9806

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, 5, 9801 DOI: 10.1039/C7TA00983F

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