Enhanced cycle stability of iron(II, III) oxide nanoparticles encapsulated with nitrogen-doped carbon and graphene frameworks for lithium battery anodes. (April 2018)

• Record Type: Journal Article
• Authors: Pham-Cong, De; Kim, Su Jae; Jeong, Se Young; Kim, Jong-Pil; Kim, Hyun Gyu; Braun, Paul V.; Cho, Chae-Ryong
• Is Part Of: Carbon. Volume 129(2018)
• Page Start: 621
• Page End: 630
• Publication Date: 2018-04
• Subjects: Nitrogen-doped carbon -- Graphene oxide -- Iron oxide -- Nanoparticles -- Cycle stability; Carbon -- Periodicals; Carbone -- Périodiques; Koolstof; Toepassingen; Electronic journals; 546.681
• DOI: 10.1016/j.carbon.2017.12.073
• Languages: English
• ISSNs: 0008-6223

Abstract

Abstract: Nitrogen-doped carbon-coated and graphene oxide-wrapped Fe3 O4 nanoparticles were prepared using the electrostatic force between polyethyleneimine-functionalized Fe3 O4 nanoparticles and graphene oxide layers, followed by annealing in an N2 atmosphere (Fe3 O4 @NCG). The electrochemical performance of Fe3 O4 @NCG was superior to that of graphene oxide- or reduced graphene oxide-wrapped Fe3 O4 nanoparticles and carbon-coated Fe3 O4 nanoparticles. Fe3 O4 @NCG exhibited stable specific capacity of ∼895 mAh g −1 after 350 cycles over the voltage range 0.001–3.0 V vs. Li/Li + . The superior performance of Fe3 O4 @NCG was attributed to the presence of a nitrogen-doped carbon layer and networks of reduced graphene oxide. The chemical route-derived Fe3 O4 @NCG may be a promising anode material for high-performance lithium-ion batteries. Graphical abstract: Image 1