Synthesis and Lithium-ion Battery Performance of Hollow Multishelled CoFe2O4

Binary transition metal oxides have attracted significant attention as high-performance lithium ion battery electrode materials,due to their excellent electrochemical activities. However,the poor cycling stability of the material limits its practical application. In this study,we synthesized CoFe2O4 hollow multishelled structure(HoMS) material by sequential templating approach,and characterized its morphology and structure. In addition,the relation-ship between shell structure and battery performance is well studied. It is demonstrated that double-shelled core CoFe2O4 HoMS has the highest discharge capacity(1354.4 mAmiddoth/g),excellent rate performance and cycle stability. The outstanding electrochemical performance is mainly attributed to its unique structural advantages and optimal cavity volume occupancy,which enables it to maintain good structure stability and beneficial electrochemical properties during the repeated cycling.

Automated summary

In this study, CoFe2O4 hollow multishelled structure (HoMS) material was synthesized using a sequential templating approach and its morphology and structure were characterized. The relationship between the shell structure and battery performance was also investigated. It was found that the double-shelled core CoFe2O4 HoMS exhibited the highest discharge capacity, excellent rate performance, and cycle stability. The exceptional electrochemical performance can be attributed to its unique structural advantages and optimal cavity volume occupancy, which enable it to maintain good structure stability and beneficial electrochemical properties during repeated cycling.