Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8014167 | Materials Letters | 2018 | 11 Pages |
Abstract
Li-S batteries are ones of the most promising secondary batteries owing to their high-energy density. However, Li-S batteries have some drawbacks, including the poor electrical conductivity and rapid capacity fading. In this work, MnO2 nanosheets/carbon nanotubes composites are synthesized via a simple and rapid hydrothermal deposit route. The carbon nanotubes (CNTs) serve as conductive network for electron. MnO2 nanosheets provide numerous sites to form strong chemical binding with polysulfide. The composite maintains a reversible capacity of 841â¯mAâ¯hâ¯gâ1 after 100 cycles at 0.5â¯C, and the rate capacity of 1214â¯mAâ¯hâ¯gâ1, 1072â¯mAâ¯hâ¯gâ1, 877â¯mAâ¯hâ¯gâ1, and 689â¯mAâ¯hâ¯gâ1 was measured at 0.2â¯C, 0.5â¯C, 1â¯C, 2â¯C, respectively.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Baolong Ling, Ao Chen, Weifang Liu, Kaiyu Liu, Hang Hu, Jianwen Zhang,