Abstract
? 2022 Elsevier B.V.Spinel ZnMn2O4 anode material has high research value as a potential alternative anode material for lithium-ion batteries due to the limited theoretical capacity of commercial graphite. This study prepared a block structured lithium-ion battery anode material ZnMn2O4 using the citric acid sol-gel combustion method. The thermal decomposition process of the xerogel precursors was investigated using thermogravimetric differential thermal analysis. When the ratio of citric acid to metal cations is 4:1, the prepared ZnMn2O4 material had an uneven block structure (ca. 0.3–1.3 μm). The material shows high electrochemical performance: the initial capacity is as high as 1100.2 mAh·g?1 at 0.1 C, and the capacity remains at 277.6 mAh·g?1 after 40 cycles. Finally, the first discharge and the second charge–discharge processes of ZnMn2O4 were thoroughly investigated, and the electrochemical behavior in the electrochemical process was analyzed.
NSTL
Elsevier