Carbonates (bicarbonates)/reduced graphene oxide as anode materials for sodium-ion batteries

Content Provider	Semantic Scholar
Author	Yan, Chunliu Yan, Liting Niu, Feier Liu, Dandan Dai, Pengcheng Li, Liangjun Yang, J. F. Zhao, Xuebo
Copyright Year	2017
Abstract	Carbonates/bicarbonates (FeCO3, CoCO3 and Ni(HCO3)2) supported on reduced graphene oxide (rGO) are prepared by a simple method and examined as anode materials for sodium-ion batteries for the first time. Although carbonates in the composite are of the order of micrometers, they show fair electrochemical activities, particularly for FeCO3/rGO. It delivers a capacity of 247 mA h g−1 after 500 cycles at 500 mA g−1, corresponding to a capacity retention of 87% relative to the capacity at the second cycle. It also shows a superior rate capability with a capacity of 176 mA h g−1 at 2 A g−1. Ex situ XPS spectra, HRTEM images and SAED patterns demonstrate that the sodium uptake/extraction in FeCO3, CoCO3 and Ni(HCO3)2 is via M0/M2+-engaged redox reaction.
Starting Page	24645
Ending Page	24650
Page Count	6
File Format	PDF HTM / HTML
DOI	10.1039/C7TA08532J
Volume Number	5
Alternate Webpage(s)	http://www.rsc.org/suppdata/c7/ta/c7ta08532j/c7ta08532j1.pdf
Alternate Webpage(s)	https://doi.org/10.1039/C7TA08532J
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article