期刊
NANOSCALE
卷 6, 期 9, 页码 4532-4537出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4nr00140k
关键词
-
类别
资金
- National Natural Science Foundation of China [21171015, 21373195]
- 1000 plan from the Chinese Government
- program for New Century Excellent Talents in the University [NCET-12-0515]
- Fundamental Research Funds for the Central Universities [WK2060140014]
- sofja kovalevskaja award from the Alexander von Humboldt Foundation
Germaniumis a promising high-capacity anode material for lithium ion batteries, but still suffers from poor cyclability due to its huge volume variation during the Li-Ge alloy/dealloy process. Here we rationally designed a flexible and self-supported electrode consisting of Ge nanoparticles encapsulated in carbon nanofibers (Ge-CNFs) by using a facile electrospinning technique as potential anodes for Li-ion batteries. The Ge-CNFs exhibit excellent electrochemical performance with a reversible specific capacity of similar to 1420 mA h g (1) after 100 cycles at 0.15 C with only 0.1% decay per cycle (the theoretical specific capacity of Ge is 1624 mA h g(-1)). When cycled at a high current of 1 C, they still deliver a reversible specific capacity of 829 mA h g(-1) g(-1) after 250 cycles. The strategy and design are simple, effective, and versatile. This type of flexible electrodes is a promising solution for the development of flexible lithium-ion batteries with high power and energy densities.
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