Rate performance enhanced Li/S batteries with a Li ion conductive gel-binder

A Li ion conductive gel-binder, Li ion-doped 1,3-dichloro-2-propanol-sulfur-poly(ethylene glycol) methyl ether binder, was employed on the S cathode to enhance the rate performance of the Li/S battery. The reversible capacity of such batteries is 690   mAh   g −   1 at a 3   C-rate after 27   cycles, and it reverts to 1020   mAh   g −   1 at 0.2   C-rate, which is close to the initial value of 1210   mAh   g −   1 . Besides, at 0.5   C-rate, the battery with this gel-binder shows a high initial specific capacity of 976   mAh   g −   1 and retains a capacity of 560   mAh   g −   1 for more than first 500   cycles.