High-rate and long-life lithium-ion battery performance of hierarchically hollow-structured NiCo<sub>2</sub>O<sub>4</sub>/CNT nanocomposite [electronic resource].
- Washington, D.C. : United States. Dept. of Energy. Office of Basic Energy Sciences, 2017. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
- Physical Description:
- pages 8-15 : digital, PDF file
- Additional Creators:
- Brookhaven National Laboratory, United States. Department of Energy. Office of Basic Energy Sciences, and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- In this paper, 3D-transition binary metal oxides have been considered as promising anode materials for lithium-ion batteries with improved reversible capacity, structural stability and electronic conductivity compared with single metal oxides. Here, carbon nanotube supported NiCo<sub>2</sub>O<sub>4</sub> nanoparticles (NiCo<sub>2</sub>O<sub>4</sub>/CNT) with 3D hierarchical hollow structure are fabricated via a simple one-pot method. The NiCo<sub>2</sub>O<sub>4</sub> nanoparticles with interconnected pores are consists of small nanocrystals. When used as anode material for the lithium-ion battery, NiCo<sub>2</sub>O<sub>4</sub>/CNT exhibits enhanced electrochemical performance than that of Co<sub>3</sub>O<sub>4</sub>/CNT and NiO/CNT. Moreover, ultra-high discharge/charge stability was obtained for 4000 cycles at a current density of 5 A g<sup>–1</sup>. The superior battery performance of NiCo<sub>2</sub>O<sub>4</sub> nanoparticles is probably attributed to the special structural features and physical characteristics, including integrity, hollow structure with interconnected pores, which providing sufficient accommodation for the volume change during charge/discharge process. Besides, the consisting of ultra-small crystals enhanced the utility of active material, and intimate interaction with CNTs improved the electron-transfer rate.
- Published through SciTech Connect., 05/17/2017., "bnl--114565-2017-ja", "KC0403020", Electrochimica Acta 244 C ISSN 0013-4686 AM, and Jie Wang; Jianzhong Wu; Zexing Wu; Lili Han; Ting Huang; Huolin L. Xin; Deli Wang.
- Funding Information:
- SC0012704, 16060, and 16060
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