title: Synergistic Ternary Composite (Carbon/Fe3 O4 @Graphene) with Hollow Microspherical and Robust Structure for Li-Ion Storage.
abstract: The electrode materials with hollow structure and/or graphene coating are expected to exhibit outstanding electrochemical performances in energy-storage systems. 2D graphene-wrapped hollow C/Fe3 O4 microspheres are rationally designed and fabricated by a novel facile and scalable strategy. The core@double-shell structure SPS@FeOOH@GO (SPS: sulfonated polystyrene, GO: graphene oxide) microspheres are first prepared through a simple one-pot approach and then transformed into C/Fe3 O4 @G (G: graphene) after calcination at 500 °C in Ar. During calcination, the Kirkendall effect resulting from the diffusion/reaction of SPS-derived carbon and FeOOH leads to the formation of hollow structure carbon with Fe3 O4 nanoparticles embedded in it. In the rationally constructed architecture of C/Fe3 O4 @G, the strongly coupled C/Fe3 O4 hollow microspheres are further anchored onto 2D graphene networks, achieving a strong synergetic effect between carbon, Fe3 O4 , and graphene. As an anode material of Li-ion batteries (LIBs), C/Fe3 O4 @G manifests a high reversible capacity, excellent rate behavior, and outstanding long-term cycling performance (1208 mAh g(-1) after 200 cycles at 100 mA g(-1) ).
authors.affiliation: College of Chemistry, Chemical Engineering and Material Science & College of Physics, Optoelectronics and Energy, Soochow University, Suzhou, Jiangsu 215006 (P. R. China).
authors.forename: Xingxing
authors.initials: X
authors.lastname: Li
authors.affiliation: College of environment, Hohai University, Nanjing, Jiangsu 210098, China Institution (P. R. China).
authors.forename: Xueying
authors.initials: X
authors.lastname: Zheng
authors.affiliation: College of Chemistry, Chemical Engineering and Material Science & College of Physics, Optoelectronics and Energy, Soochow University, Suzhou, Jiangsu 215006 (P. R. China). shaojie@suda.edu.cn.
authors.forename: Jie
authors.initials: J
authors.lastname: Shao
authors.affiliation: College of Chemistry, Chemical Engineering and Material Science & College of Physics, Optoelectronics and Energy, Soochow University, Suzhou, Jiangsu 215006 (P. R. China).
authors.forename: Tian
authors.initials: T
authors.lastname: Gao
authors.affiliation: College of Chemistry, Chemical Engineering and Material Science & College of Physics, Optoelectronics and Energy, Soochow University, Suzhou, Jiangsu 215006 (P. R. China).
authors.forename: Qiang
authors.initials: Q
authors.lastname: Shi
authors.affiliation: College of Chemistry, Chemical Engineering and Material Science & College of Physics, Optoelectronics and Energy, Soochow University, Suzhou, Jiangsu 215006 (P. R. China). qtqu@suda.edu.cn.
authors.forename: Qunting
authors.initials: Q
authors.lastname: Qu
keywords: Li-ion batteries; composite; graphene; hollow microspheres; magnetite