Solid State Ionics, Vol.289, 23-27, 2016
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. (C) 2016 Elsevier B.V. All rights reserved.