Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5458941 | Journal of Alloys and Compounds | 2017 | 7 Pages |
Abstract
A novel three-dimensional ordered macroporous (3DOM) Cu/Fe3O4 composite film was prepared by electrodepositing ferroferric oxide (Fe3O4) on the 3DOM Cu current collector. Characterizations via electron microscopies and X-ray diffractions confirmed that achieved 3DOM Cu/Fe3O4 composite inherited originally ordered porous structure, but has a layer of nanosized Fe3O4 on the surface of the 3DOM Cu framework. The obtained 3DOM Cu/Fe3O4 composite films were directly used as anodes of lithium ion batteries in the absence of conducting additives or binders. Results from electrochemical evaluations exhibited that the 3DOM Cu/Fe3O4 anode could deliver a stable capacity of 800Â mAh gâ1 up to 400 cycles, while fast capacity degradation with 200Â mAh gâ1 retained after 100 cycles was observed on Fe3O4 deposited on plane Cu substrate. The superior behavior of the 3DOM Cu/Fe3O4 composite anode is ascribed to its unique porous structure, which provides sufficient space for large volume change of Fe3O4 and greatly reduces the diffusion distance for Li-ion in the active material.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Yiping Tang, Huanle Zhang, Jiquan Li, Guangya Hou, Huazhen Cao, Liankui Wu, Guoqu Zheng, Qingliu Wu,