Journal
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
Volume 13, Issue 1, Pages 762-770Publisher
ESG
DOI: 10.20964/2018.01.60
Keywords
Co@C composite; Lithium ion batteries; Ionic liquid
Categories
Funding
- National Natural Science Foundation of China [51364024, 51404124]
- Foundation for Innovation Groups of Basic Research in Gansu Province [1606RJIA322]
- Research and Development Fund of Lanzhou University of Technology [01-0443]
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A carbon-coated cobalt (Co@C) composite was synthesized by a one-step method using ionic liquid as carbon source and reducing agent. The Co@C composite exhibited a core-shell structure, in which the cobalt nanoparticles uniformly embedded in the carbon matrix. When used as the anode material for lithium ion batteries, the cobalt nanoparticles enhanced the kinetics of Li+ and electronic transport during the charge/discharge process. The Co@C composite material delivered a reversible capacity of 657.3 mAh g(-1) after 60 cycles at a current density of 0.1C and exhibits improved rate performance when compared with pure carbon.
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