Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7887552 | Ceramics International | 2018 | 7 Pages |
Abstract
Ultrathin MoS2 nanosheets were vertically anchored on the reduced graphene oxide (MoS2/rGO) via hydrothermal method. To further engineering the surface conductivity, ultrathin polypyrrol (PPy) layer was coated on the MoS2/rGO composite via in situ polymerization to form a bi-continuous conductive network with a sandwich-like structure. The graphene nanosheets and the PPy coating can facilitate the electrons transfer rate, while the ultrathin MoS2 nanosheets can enhance the utilization efficiency of the active materials. The obtained MoS2/rGO-10 composite exhibits high reversible specific capacity (970â¯mAhâ¯gâ1 at 0.1â¯Aâ¯gâ1) and rate capability (capacity retention of 64% at 3.2â¯Aâ¯gâ1). Moreover, the PPy@MoS2/rGO hybrids reveal lower specific capacity but better rate capability, and a “trade-off” effect between electrons and ions transfer resistance was observed. This easy-scalable PPy surface conductivity engineering strategy may be applied in the preparation of high-performance LIBs active materials.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Hualian Zhang, Xingbin Lv, Feifei Wang, Zhufeng Hu, Han Han, Xueying Fan, Junyi Ji,