Electrochemical properties of lithium sulfur cells using PEO polymer electrolytes prepared under three different mixing conditions
Abstract
Lithium sulfur cells were prepared by composing with sulfur cathode (PEO) 6LiBF 4 polymer electrolyte and lithium anode. (PEO) 6LiBF 4 polymer electrolyte was prepared under three different mixing conditions: stirred polymer electrolyte (SPE), ball-milled polymer electrolyte (BPE) and ball-milled polymer electrolyte with 10 wt%Al 2O 3 (BCPE). The effects of ball milling and additive were investigated by discharge test according to depth of discharge. The initial discharge capacity of lithium sulfur cell using BCPE was 1670 mAh g -1-sulfur, which was better than those of SPE and BPE, and approximately equal to the theoretical capacity. The cycle performance of Li/(PEO) 6LiBF 4/S cell was remarkably improved by the addition of Al 2O 3.
- Publication:
-
Journal of Power Sources
- Pub Date:
- 2007
- DOI:
- 10.1016/j.jpowsour.2007.06.108
- Bibcode:
- 2007JPS...174..745J
- Keywords:
-
- Sulfur;
- Polymer electrolyte;
- Ball milling;
- Lithium sulfur cell;
- Al <SUB>2</SUB>O <SUB>3</SUB>