期刊
JOURNAL OF POWER SOURCES
卷 331, 期 -, 页码 16-21出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2016.09.027
关键词
Lithium-ion batteries; Anode; Sb; Metal organic frameworks; Replacement reaction
资金
- National Science Foundation of China [51475207]
- China Postdoctoral Science Foundation [2015m580253]
A novel Sb/C polyhedra composite is successfully fabricated by a galvanic replacement reaction technique using metal organic frameworks as templates. In this composite, the ultrasmall Sb nanoparticles with an average size of 15 nm are homogeneously encapsulated into the carbon matrixes, forming a hierarchical porous structure with nanosized building blocks. Used as an anode material for lithium ion batteries, this composite exhibits high lithium storage capacities, excellent rate capability and superior cycle stability, higher than many reported results. Notably, a discharge capacity of 565 mAh g(-1) at a current density of 0.2 A g(-1) is delivered after 100 repeated cycles. Even at a high current density of 1 A g(-1), a discharge capacity of 400.5 mAh g(-1) is also maintained after 500 cycles. Such superior cycling stability and rate discharge performance of the designed Sb/C composite can be attributed to the synergistic effect between Sb nanoparticles and the porous carbon matrixes. (C) 2016 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据