期刊
CHEMICAL ENGINEERING JOURNAL
卷 360, 期 -, 页码 974-981出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2018.07.054
关键词
Carbon nanotubes; Silicon particles; Sulfur; Anode; Li-ion battery
资金
- Jiangsu Province Fundamental Research Grant [BK20150379, BK20160389]
- Suzhou City Key Industry Technological Innovation (Perspective Application Research) Grant [SYG201621]
- Collaborative Innovation Centre of Suzhou Nano Science and Technology
To target the low conductance and expansion issues of Si based anodes for Li-ion batteries, a 3D structural composite constructed by CNTs framework distributedly anchored with double-carbon coated silicon nanoparticles has been designed, fabricated and characterized. The crosslinked CNT framework provided electrical conductive pathway as well as void-space to accommodate the expansion of silicon nanoparticles. The double layered carbon coating was formed under the assistance of the sulfur sacrificing agent giving protection on the silicon particle surface. The Si/CNTs@(S)-C electrodes exhibited a high reversible capacity of 943 mAhg(-1) after 1000 cycles at a C/5 rate. The excellent cycling performance is attributed to the unique structure which can stabilize the silicon particle during volume expansion and keep the electrical connection at the same time.
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