Abstract
Porous MoO3 films are obtained by electrodepositing on Ni substrates. The galvanostatic charge/discharge tests show that, the film cathodes have a reversible capacity of 190 mA h g-1 at a current density of 30 mA g-1 between the voltage limits of 1.5-3.5 V vs. Li+/Li, a much better performance than the pristine MoO3 powder. More than 75% capacitive contribution in the capacity of porous MoO 3 films is responsible for the high capacity, according to the cyclic voltammetry analysis. Another improved property of the porous MoO3 films is the rate performance, which still retains 70 mA h g-1 at a current density of 1.25 A g-1. The chronopotentiometry results reveal that, the prominent rate performances are owing to the high rate ability of the capacitive contribution.
Original language | English |
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Pages (from-to) | 61-67 |
Number of pages | 7 |
Journal | Journal of Electroanalytical Chemistry |
Volume | 694 |
DOIs | |
Publication status | Published - 2013 |
Externally published | Yes |
Keywords
- Capacitive contribution
- Cyclic voltammetry
- Electrodeposition
- Molybdenum trioxide
- Porous films