Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5460836 | Journal of Alloys and Compounds | 2017 | 8 Pages |
Abstract
In this paper, we report the original synthesis of hollow Si-Ni3Sn2 @ graphene composite and its high reversible capacity as lithium-ion battery anodes. To build the new architecture, three strategies of hollow architectures, porous surface and specific composition of graphene are attempted to develop lithium storage with far greater energy density and outstand rate performance. The results show that as-designed hollow Si-Ni3Sn2@graphene composites exhibit outstanding reversible capacity of 855.7 mAh gâ1 during the first cycle, and 576.6 mAh gâ1 can be maintained during a cycling test of 50 cycles at 300 mA gâ1. The rate capability is also enhanced, delivering reversible capacity of 449.8, 420.4, 392.7 and 377.1 mAh gâ1 at current densities of 600, 800, 1200 and 1800 mA h gâ1, thus exhibiting great potential as an anode material for lithium-ion batteries.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Ke Wang, Ying Huang, Meng Yu, Xiulan Qin,