Quick one-pot synthesis of amorphous carbon-coated cobalt–ferrite twin elliptical frustums for enhanced lithium storage capability. Issue 17 (12th April 2017)

• Record Type: Journal Article
• Authors: Xiang, Yang; Wu, Hu; Zhang, Kelvin H. L.; Coto, Mike; Zhao, Teng; Chen, Sheng; Dong, Bitao; Lu, Shiyao; Abdelkader, Amr; Guo, Yuzhen; Zhang, Yanfeng; Ding, Shujiang; Xi, Kai; Gao, Guoxin
• Is Part Of: Journal of materials chemistry. Volume 5:Issue 17(2017)
• Page Start: 8062
• Page End: 8069
• Publication Date: 2017-04-12
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c7ta02136d
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : A novel hierarchical hybrid nanostructure of carbon-coated CoFe2 O4 twin elliptical frustums (CoFe2 O4 @C TEFs) has been developed with excellent performance in lithium ion batteries. Abstract : Hybrid carbon-coated transition metal oxides (TMOs@C) offer enhanced lithium storage capabilities, but the facile formation of TMOs@C nanocomposites remains a great challenge. Herein, we report a novel hierarchical hybrid nanostructure of carbon-coated CoFe2 O4 twin elliptical frustums (CoFe2 O4 @C TEFs) via a quick one-pot refluxing reaction in ethylene glycol (EG) followed by an annealing treatment. When evaluated as an anode in lithium-ion batteries (LIBs), the resultant CoFe2 O4 @C TEF hybrids demonstrate good electrochemical performance with high reversible specific capacity, excellent rate capability and super-long life cycle. After 600 cycles at a current density of 500 mA g −1, the resultant TEFs still deliver a stable reversible discharge capacity of 875 mA h g −1 . This work demonstrates the extensive potential of such simple synthetic methods towards various carbon coated transition metal oxide composites for energy conversion and storage devices.