Journal
NANO ENERGY
Volume 60, Issue -, Pages 362-370Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nanoen.2019.03.065
Keywords
Molybdenum disulfide; Polypyrrole; Polymerization; Anode; Sodium ion batteries
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Funding
- Natural Science Foundation of Shandong Province [ZR2018MEM020]
- U.S. Department of Energy (DOE), Office of Energy Efficiency and Renewable Energy, Vehicle Technologies Office
- DOE Office of Science [DE-AC02-06CH11357]
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Molybdenum disulfide (MoS2) has become a potential anode material for sodium-ion batteries (SIBs) by showing decent cell performance but it suffers poor electronic conductivity and large volume expansion during sodiation. Here we design a nanocomposite with hollow nitrogen doped carbon and polypyrrole modified MoS2 for improving the performance for SIBs. The designed nanocomposite shows a much-improved electronic conductivity and the design of the architecture provides sufficient channels for mass transport and accommodates large volume change. This C@MoS2@PPy anode delivers a high specific capacity of 713 mAh g(-1) at 0.1 A g(-1) for 100 cycles, and an excellent rate capacity of 294 mAh g(-1) at 5 A g(-1) for 500 cycles. This specific architecture of C@MoS2@PPy could guide the future design of the electrode material in SIBs and its superior electrochemical performance indicates the great potential application for SIBs.
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