期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 5, 期 6, 页码 4739-4745出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.7b00119
关键词
Fe3O4/Fe1-xS; MoS2; Nanosheets; Lithium ion batteries; Sodium ion batteries
资金
- Natural Science Foundation of China [51402109]
- Project of Public Interest Research and Capacity Building of Guangdong Province [2014A010106007]
- Pearl River S&T NovaProgram of Guangzhou [201506010030]
- Guangdong Innovative and Entrepreneurial Research Team Program [2014ZT05N200]
- Guangdong Natural Science Funds for Distinguished Young Scholar [2016A030306010]
Fe3O4/Fe1-xS@C@MoS2 nanosheets consisting of Fe3O4/Fe1-xS nanoparticles embedded in carbon nanosheets and coated by MoS2 were synthesized via a facile and scalable strategy with assistance of NaCI template. With Fe3O4/Fe1-xS@C@MoS2 nanosheets composite as an anode for LIBs and SIBs, the Fe3O4/Fe1-xS@C@MoS2 nanosheets composite shows outstanding electrochemical performance because of the synergistic effects of the Fe3O4/Fe1-xSS nanoparticles, carbon nanosheets and MoS2. In this unique constructed architecture, on one hand, the carbon nanosheets can avoid the direct exposure of Fe3O4/Fe(1-x)SSNPs to the electrolyte; on the other hand, the carbon nanosheets can buffer the volume change of Fe3O4/Fe1-xS NPs as well as suppress the aggregation of Fe3O4/Fe1-xS NPs during the cycling processes. Moreover, MoS2 can offer high interfacial contact areas between active materials/electrolyte, resulting in rapid charge transfer and higher capacity. As a consequence, Fe3O4/Fe1-xS@C@MoS2 nanosheets exhibit high reversible capacity of 1142 mAhg(-1) after 700 cycles at 1.0 A g(-1) and 640 mA h CI at 5.0 A C'for LIBs, 402 mA h Cl after 1000 cycles at 1.0 A g-land 355 mA h g(-1) at 2.0 A for SIBs, respectively. This outstanding electrochemical performance indicated that the Fe3O4/Fe1-xS@C@MoS2 nanosheets have potential as anode for high-performance LIBs and SIBs.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据