Abstract
In this paper, three-dimensionally ordered macroporous (3DOM) ZnFe2O4 (ZFO) was prepared via a templating method with polystyrene (PS) colloidal crystals, and used as highly reversible anode material for lithium ion batteries. In order to study influence of the macropore diameter on a cyclic behavior, 3DOM ZFO anode materials with two different macropore diameters of 160 and 55 nm were prepared. The 3DOM ZFO with a pore diameter of 160 nm (ZFO@160) delivered a high discharge capacity of ca. 1165.8 mAh g−1 at the initial cycle, as compared with those of 3DOM ZFO with 55 nm macropore (ZFO@55, ca. 1112.3 mAh g−1) and ZFO nanoparticles (ZFO NPs, ca. 925.6 mAh g−1). Moreover, a reversible capacity of 1143.7 mAh g−1 for the 3DOM ZFO@160 electrode was stably retained even after 100 cycles. The 3DOM ZFO@160 electrode also revealed much improved cycling performance, coulombic efficiency and rate capability, compared to the 3DOM ZFO@55 and ZFO NPs electrodes. These enhanced electrochemical properties could be ascribed to effective pore dimension with wide-spread channels, which could offer an efficient Li+ flux and a facile strain relaxation.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
