| Autor: |
Xiaolong Zhang, Wenyue Li, Wen-lou Wang, Yongbing Tang, Chun-Sing Lee, Hui Liu, Fan Zhang |
| Rok vydání: |
2015 |
| Předmět: |
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| Zdroj: |
Electrochimica Acta. 167:132-138 |
| ISSN: |
0013-4686 |
| DOI: |
10.1016/j.electacta.2015.03.151 |
| Popis: |
Molybdenum disulfide (MoS 2 ) is one of the most attractive anode materials for lithium-ion batteries (LIBs) due to its high theoretical specific capacity, but its poor cyclic stability need further optimization for its practical application. In this study, porous MoS 2 /polyaniline (MoS 2 /PANI) composite with a tremella-like hierarchical structure was synthesized via a facile polymerization and hydrothermal method. The homogeneously distributed PANI can not only improve the conductivity of MoS 2 , but also rebuild a hierarchical porous structure thus enhance rapid Li + transport during the Li + insertion/extraction reaction. As an anode material of LIBs, this composite exhibits a high initial reversible capacity of 910 mAh/g with an initial Coulombic efficiency of ∼80% at 0.1 A/g. Even at a high current density of 4 A/g, the reversible capacity of the MoS 2 /PANI composite still remains at 369 mAh/g. Moreover, this composite retains an impressive high capacity of 915 mAh/g after 200 cycles at a high current density of 1 A/g, demonstrating its potential for applications in LIBs. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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Full Text from ScienceDirect