標題: Self-assembly of hierarchical MoSx/CNT nanocomposites (2 < x < 3): towards high performance anode materials for lithium ion batteries
作者: Shi, Yumeng
Wang, Ye
Wong, Jen It
Tan, Alex Yuan Sheng
Hsu, Chang-Lung
Li, Lain-Jong
Lu, Yi-Chun
Yang, Hui Ying
材料科學與工程學系
Department of Materials Science and Engineering
公開日期: 9-Jul-2013
摘要: Two dimension (2D) layered molybdenum disulfide (MoS2) has emerged as a promising candidate for the anode material in lithium ion batteries (LIBs). Herein, 2D MoSx (2 <= x <= 3) nanosheet-coated 1D multiwall carbon nanotubes (MWNTs) nanocomposites with hierarchical architecture were synthesized via a high-throughput solvent thermal method under low temperature at 2006 degrees C. The unique hierarchical nanostructures with MWNTs backbone and nanosheets of MoSx have significantly promoted the electrode performance in LIBs. Every single MoSx nanosheet interconnect to MWNTs centers with maximized exposed electrochemical active sites, which significantly enhance ion diffusion efficiency and accommodate volume expansion during the electrochemical reaction. A remarkably high specific capacity (i.e., >1000 mAh/g) was achieved at the current density of 50 mA g(-1), which is much higher than theoretical numbers for either MWNTs or MoS2 along (similar to 372 and similar to 670 mAh/g, respectively). We anticipate 2D nanosheets/1D MWNTs nanocomposites will be promising materials in new generation practical LIBs.
URI: http://dx.doi.org/10.1038/srep02169
http://hdl.handle.net/11536/147654
ISSN: 2045-2322
DOI: 10.1038/srep02169
期刊: SCIENTIFIC REPORTS
Volume: 3
起始頁: 0
結束頁: 0
Appears in Collections:Articles


Files in This Item:

  1. 5f9d9650937e5c3c7b7a146124c6a059.pdf

If it is a zip file, please download the file and unzip it, then open index.html in a browser to view the full text content.