Mesoporous MnO2 fibers as an efficient bifunctional absorber for high-performance lithium-sulfur batteries

A novel morphology of mesoporous MnO2 fibers (MOF) are successfully prepared for the first time as host materials for lithium-sulfur (LiS) batteries. The as-prepared mesoporous MnO2 fibers can restrain the polysulfides dissolution via chemical bonding and physical trapping at the same time. As a result, the mesoporous MnO2 fibers sulfur (MOF/S) composites exhibit excellent cycle performance. The MOF/S composite electrodes deliver a high initial capacity of 1015 mAh g−1 and maintain 815 mAh g−1 after 200 cycles at 0.1 C.