The porous structure within the cathode material influences the capacity and operating performance of Li-S batteries. Here, we prepared special carbon material using sodium chloride as template/temporary space-holders to design mixture of micro-/meso-/macroporous structure with large surface area through a facile water bath and freeze-drying process. Such modification led to a high sulfur content of 73.2 % with remarkable initial capacity of 1378 mAh g-1 at 0.1 A g‒1, and maintains 48.6% after 100 cycles. Moreover, the Li-S battery displayed superior rate capability of 807 mAh g–1 at 1.0 A g–1. This abundant micro-/meso-/macropores can improve the content of sulfur, relieve the loss of sulfur and exhibit superior cycling performance and rate capability.
|Number of pages||8|
|Journal||Journal of Electroanalytical Chemistry|
|Early online date||13 Jan 2021|
|Publication status||Published - 1 Feb 2021|