Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6605231 | Electrochimica Acta | 2017 | 33 Pages |
Abstract
Metal sulfide composites have been regarded as a new class of the most promising anode materials for the both lithium ion batteries (LIBs) and sodium ion batteries (SIBs). However, their practical applications have been restricted by their relative poor cyclabilities and low rate performances. Herein, the numerous metal sulfides/graphene/carbon nanotubes (MxSy/GC) composites with a sandwiched architecture assembled by uniform MxSy nanoparticles anchored in the GC matrix are fabricated for high-performance LIBs/SIBs via a scalable calcination approach. As a result of the superiorities of small particle size, preferable structural flexibility and the sandwiched architecture, the as-prepared MxSy/GC composites exhibit a significant improvement in LIBs performance. Among them, the FeS/GC composite demonstrates excellent electrochemical performances in LIBs with favorable cycling stability, high specific capacity (â¼870 mAh gâ1 at 0.25 A gâ1) and remarkable rate performance. When applied as an anode material for SIBs, the FeS/GC composite still exhibits a superior reversible capacity of 300 mAh gâ1 at a current density of 0.1 A gâ1 after 100 cycles.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Xing Zhang, Beibei Wang, Gang Wang, Xiaojie Liu, Hui Wang,