Journal
FRONTIERS IN CHEMISTRY
Volume 6, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fchem.2018.00629
Keywords
SnS2; reduced graphene oxide; thin nanosheets; anode material; lithium ion batteries; sodium ion batteries
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Funding
- National Natural Science Foundation of China [51502350, 51702367, 51772334]
- China Postdoctoral Science Foundation [2016M592447]
- International Postdoctoral Exchange Fellowship Program [155212]
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SnS2 nanosheets/reduced graphene oxide (rGO) composite was prepared by reflux condensation and hydrothermal methods. In this composite, SnS2 nanosheets in-situ grew on the surface of rGO nanosheets. The SnS2/rGO composite as anode material was investigated both in lithium ion battery (LIB) and sodium ion battery (SIB) systems. The capacity of SnS2/rGO electrode in LIB achieved 514 mAh g(-1) at 1.2 A g(-1) after 300 cycles. Moreover, the SnS2/rGO electrode in SIB delivered a discharge capacity of 645 mAh g(-1) at 0.05 A g(-1); after 100 cycles at 0.25 A g(-1), the capacity retention still keep 81.2% relative to the capacity of the 6th cycle. Due to the introduction of rGO in the composite, the charge-transfer resistance became much smaller. Compared with SnS2/C electrode, SnS2/rGO electrode had higher discharge capacity and much better cycling performance.
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