Please use this identifier to cite or link to this item:
|Title:||In situ nitrogenated graphene-few-layer WS2 composites for fast and reversible Li+ storage|
|Citation:||Chen, D., Ji, G., Ding, B., Ma, Y., Qu, B., Chen, W., Lee, J.Y. (2013-09-07). In situ nitrogenated graphene-few-layer WS2 composites for fast and reversible Li+ storage. Nanoscale 5 (17) : 7890-7896. ScholarBank@NUS Repository. https://doi.org/10.1039/c3nr02920d|
|Abstract:||Two-dimensional nanosheets can leverage on their open architecture to support facile insertion and removal of Li+ as lithium-ion battery electrode materials. In this study, two two-dimensional nanosheets with complementary functions, namely nitrogen-doped graphene and few-layer WS 2, were integrated via a facile surfactant-assisted synthesis under hydrothermal conditions. The layer structure and morphology of the composites were confirmed by X-ray diffraction, scanning electron microscopy and high-resolution transmission microscopy. The effects of surfactant amount on the WS2 layer number were investigated and the performance of the layered composites as high energy density lithium-ion battery anodes was evaluated. The composite formed with a surfactant:tungsten precursor ratio of 1:1 delivered the best cyclability (average of only 0.08% capacity fade per cycle for 100 cycles) and good rate performance (80% capacity retention with a 50-fold increase in current density from 100 mA g-1 to 5000 mA g -1), and may find uses in power-oriented applications. © 2013 The Royal Society of Chemistry.|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Jun 19, 2018
WEB OF SCIENCETM
checked on Jun 12, 2018
checked on Jun 1, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.