Fe₃S₄Nanoparticles Wrapped in an rGO Matrix for Promising Energy Storage: Outstanding Cyclic and Rate Performance

Sheng-Ping Guo,*Jia-Chuang Li, Jin-Rong Xiao and Huai-Guo Xue*

School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China

ABSTRACT:Iron sulfides/oxides/fluorides have been profoundly investigated as electrodes for rechargeable batteries recently in view of their high theory capacities, low cost, and environmental benign. Here, Fe₃S₄nanoparticles wrapped in reduced graphene oxide (Fe₃S₄NPs@rGO) has been obtained using a simple one-pot hydrothermal approach, which is characterized using various techniques. As the anode for LIBs, Fe₃S₄NPs@rGO displays a reversible discharge capacity of 950 mAh/g after 100 cycles at 0.1 A/g, and 720 mAh/g capacity can be left after 800 cycles even at 1 A/g. Even at 10 A/g, 462 mAh/g capacity can be maintained. The excellentelectrochemical properties forFe₃S₄NPs@rGO can be ascribed to a collaborative effect between Fe₃S₄NPs and rGO matrix, which possess high Li-ion storage ability and excellent conductivity, respectively.

ACS Appl. Mater. Interfaces2017, 9, 37694–37701. IF = 7.504

文章链接：http://pubs.acs.org/doi/abs/10.1021/acsami.7b10406