Publication Type
Journal
Journal Name
RSC Advances
Publication Date
Page Numbers
19885 to 19889
Volume
11
Issue
32
Abstract
Herein we report on using Egyptian blue as an anode material for Li-ion batteries. A 1st cycle lithiation capacity of 594 mA h g−1 and reversible capacity of 210 mA h g−1 at 20 mA g−1, and at 500 mA g−1 a reversible capacity of 120 mA h g−1 (stable over 1000 cycles) were achieved with coulombic efficiency more than 99.5%. Using X-ray diffraction, and FTIR and X-ray absorption spectroscopies we found that the material goes through a conversion reaction during the 1st cycle that results in the formation of amorphous mixed oxides with copper nanoclusters.
