Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7833590 | Applied Surface Science | 2018 | 26 Pages |
Abstract
A three-dimensional (3D) Cu/Fe3O4 anode material was synthesized successfully via a simple and flexible route. Cu nanowires grew on Cu sheet directly by oxidation and reduction as 3D current collector, Fe3O4 nanosheets were coated on the collector surface by electrodeposition to form 3D Cu/Fe3O4 nanocomposite. The characterization results showed that oxidation time affects the morphology of Cu nanowires greatly, the collector has optimum 3D nanostructure at 200â¯s oxidation with high performance. The 3D Cu/Fe3O4 anode possessed high cycling capability, the capacity reached 700â¯mAh/g after 300 cycles at 0.5â¯A/g. And it exhibited high rate performance, the capacity reached 482â¯mAh/g at 2â¯A/g and it recovered to 853.5â¯mAh/g at 0.2â¯A/g after 100 cycles of different rate tests. The high performance is ascribed to the unique 3D nanostructure of current collector, which provides sufficient space for large volume change and stress release, and reduces the distance for transporting lithium ions and electrons.
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Authors
Xin Xu, Kang Shen, Min Wen, Qingliu Wu, Guangya Hou, Huazhen Cao, Liankui Wu, Guoqu Zheng, Yiping Tang,