%0 Journal Article
%T Micro-sized and Nano-sized Fe_3O_4 Particles as Anode Materials for Lithium-ion Batteries<br>
%A YXChen
%A LHHe
%A PJShang
%A QLTang
%A ZQLiu
%A HBLiu
%A LPZhou College of Materials Science
%A Engineering
%A Hunan University
%A Changsha
%A China Shenyang National Laboratory for Materials Science
%A <br>
%J 材料科学技术学报
%D 2011
%I 
%X Micro-sized (1030.3§178.4 nm) and nano-sized (50.4±8.0 nm) Fe3O4 particles have been fabricated through hydrogen thermal reduction of α-Fe2O3 particles synthesized by means of a hydrothermal process. The morphology and microstructure of the micro-sized and the nano-sized Fe3O4 particles were characterized by X-ray diffraction, field-emission gun scanning electron microscopy, transmission electron microscopy and high-resolution electron microscopy. The micro-sized Fe3O4 particles exhibit porous structure, while the nano-sized Fe3O4 particles are solid structure. Their electrochemical performance was also evaluated. The nano-sized solid Fe3O4 particles exhibit gradual capacity fading with initial discharge capacity of 1083.1 mAhg 1 and reversible capacity retention of 32.6% over 50 cycles. Interestingly, the micro-sized porous Fe3O4 particles display very stable capacity-cycling behavior, with initial discharge capacity of 887.5 mAhg 1 and charge capacity of 684.4 mAhg 1 at the 50th cycle. Therefore, 77.1% of the reversible capacity can be maintained over 50 cycles. The micro-sized porous Fe3O4 particles with facile synthesis, good cycling performance and high capacity retention are promising candidate as anode materials for high energy-density lithium-ion batteries.
%K Lithium-ion battery
%K Fe3O4
%K Porous structure Anode materials<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=324DC3CAB22330DB19158AE0A9B7BFA5&aid=2F765827BABA950DDE2CB5A34798A397&yid=9377ED8094509821&vid=DB817633AA4F79B9&iid=CA4FD0336C81A37A&sid=2001E0D53B7B80EC&eid=94E7F66E6C42FA23&journal_id=1005-0302&journal_name=材料科学技术学报&referenced_num=0&reference_num=0