Lee, Gwang-Hee Park, Jae-Gwan Sung, Yun-Mo Chung, Kyung Yoon Il Cho, Won Kim, Dong-Wan 2024-01-20T21:03:17Z 2024-01-20T21:03:17Z 2021-09-03 2009-07-22 0957-4484 https://pubs.kist.re.kr/handle/201004/132305 We demonstrate the formation of a highly conductive, Fe-0/Fe3O4 nanocomposite electrode by the hydrogen reduction process. Fe2O3 nanobundles composed of one-dimensional nanowires were initially prepared through thermal dehydrogenation of hydrothermally synthesized FeOOH. The systematic phase and morphological evolutions from Fe2O3 to Fe2O3/Fe3O4, Fe3O4, and finally to Fe/Fe3O4 by the controlled thermochemical reduction at 300 degrees C in H-2 were characterized using x-ray diffraction (XRD) and transmission electron microscopy (TEM). The Fe/Fe3O4 nanocomposite electrode shows excellent capacity retention (similar to 540 mA h g(-1) after 100 cycles at a rate of 185 mA g(-1)), compared to that of Fe2O3 nanobundles. This enhanced electrochemical performance in Fe/Fe3O4 composites was attributed to the formation of unique, core-shell nanostructures offering an efficient electron transport path to the current collector. English IOP PUBLISHING LTD REDUCTION NANORODS CO3O4 Enhanced cycling performance of an Fe-0/Fe3O4 nanocomposite electrode for lithium-ion batteries Article 10.1088/0957-4484/20/29/295205 1 NANOTECHNOLOGY, v.20, no.29 NANOTECHNOLOGY 20 29 scie scopus 000267612700007 2-s2.0-67651152926 Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Science & Technology - Other Topics Materials Science Physics Article REDUCTION NANORODS CO3O4 hydrogen reduction process core-shell nanostructure FeOOH precursor nanocomposite electrode