Journal
MATERIALS LETTERS
Volume 219, Issue -, Pages 19-22Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2018.02.053
Keywords
Potassium-ion batteries; SnO2-graphene-carbon; Nanofibers; Electrospinning; Energy storage and conversion; Porous materials
Funding
- National Natural Science Foundation of China [51404103, 51772082, 51574117]
- China Postdoctoral Science Foundation [201720172017]
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In this study, the SnO2-graphene-carbon (SnO2-G-C) nanofibers are synthetized via an electrospinning method and employed as potential KIB anodes. The SnO2-G-C anodes exhibit a great cycling stability of 202.06 mA h/g over 100 cycles at the current density of 100 mA/g, as well as the high rate capacity of 114.81 mA h/g at 1 A/g. The enhanced electrochemical properties of SnO2-G-C comparing to SnO2-carbon (SnO2-C) counterpart can be ascribed to the dispersive graphene inside the carbon nanofibers, which offers flexible buffer matrix and protects the active materials from destruction. Meanwhile, the graphene facilitates the electrons transportation, leading to the good rate capability. (C) 2018 Elsevier B.V. All rights reserved.
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