期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 5, 期 20, 页码 9801-9806出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ta00983f
关键词
-
资金
- Natural Science Foundation of the Inner Mongolian Autonomous Region of China [2015MS0517]
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 g(-1) at 0.1C, excellent cycling stability up to 150 cycles, and a superior rate capability of 533 mA h g(-1) at 10C as an anode material for LIBs.
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