Abstract
A novel sulfur-impregnated porous carbon matrix (PCM-Z-S) has been prepared as a cathode material for a lithium-sulfur battery. The porous carbon matrix (PCM-Z), which was obtained using de-waxed cotton and ZnCl2 as an activator, has a surface area of 1056 m2 g-1 and a pore volume of 1.75 cm3 g-1. The PCM-Z was mixed with sublimed sulfur and then heated in nitrogen gas to form a carbon-sulfur 58 wt% composite (PCM-Z-S) which has excellent electrochemical proprieties. The PCM-Z-S delivers a capacity of 850 mA h g-1 at 1C and retains 630 mA h g-1 after nearly 200 cycles which are values much higher than that of a carbon matrix prepared without ZnCl2. These results show the sulfur-impregnated porous carbon matrix (PCM-Z-S) has great potential as a cathode material in a lithium-sulfur battery.
| Original language | English |
|---|---|
| Pages (from-to) | 64228-64233 |
| Number of pages | 6 |
| Journal | RSC Advances |
| Volume | 6 |
| Issue number | 69 |
| DOIs | |
| State | Published - 2016 |
| Externally published | Yes |
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