Reduced graphene oxide separator improves performance of Li-sulfur battery
Green Car Congress
MAY 31, 2015
Researchers in have shown that a lithium-sulfur (Li-S) battery with a reduced graphen oxide (rGO) -coated separator exhibits much smaller impedance and much better electrochemical performance than cells with an uncoated separator. After coating with rGO, the initial discharge capacity can be as large as 1067 mAh g −1 at 0.2 C; the cell can retain 878 mAh g −1 after 100 cycles; and the discharge capacity can reach 710 mAh g −1 even at 2 C.