2D a-MoO3 was synthesized using a facile, inexpensive and scalable liquid-phase exfoliation method. 2D a-MoO3/SWCNT (85 wt%/15 wt%) composite films were manufactured by vacuum filtration and their energy storage properties were investigated in a LiClO4/propylene carbonate electrolyte in a 1.5 V to 3.5 V vs. Li+/Li electrochemical window. Cyclic voltammetry showed typical ion intercalation peaks of a-MoO3 and a capacitance of 200 F/g was achieved at 10 mV/s and 82 F/g at 50 mV/s. The composite electrodes achieved a capacitive charge storage of 375 C/g and a diffusion-controlled maximum charge storage of 703 C/g. The latter being superior to the charge storage achieved by previously reported mesoporous a-MoO3, produced using more cumbersome multi-step templating methods, and a-MoO3 nanobelts . This superior Li-ion intercalation charge storage was attributed to the shorter ion-transport paths of 2D a-MoO3 as compared to other nanostructures. Galvanostatic charge-discharge experiments showed a maximum charge storage of 123.0 mAh/g at a current density of 100 mA/g.
Comments: 22 Pages.
[v1] 2016-05-04 11:57:44
Unique-IP document downloads: 85 times
Vixra.org is a pre-print repository rather than a journal. Articles hosted may not yet have been verified by peer-review and should be treated as preliminary. In particular, anything that appears to include financial or legal advice or proposed medical treatments should be treated with due caution. Vixra.org will not be responsible for any consequences of actions that result from any form of use of any documents on this website.
Add your own feedback and questions here:
You are equally welcome to be positive or negative about any paper but please be polite. If you are being critical you must mention at least one specific error, otherwise your comment will be deleted as unhelpful.