Co3-xMnxO4 as a High Capacity Anode Material for Lithium Ion Batteries

In the recent years, nanostructured metal oxides have attracted a great interest as a promising anode materials for lithium-ion batteries. Co
_2.78
Mn
_0.22
O
₄
and Co
_2.82
Mn
_0.18
O
₄
nanoparticles belonging to Co
_3-x
Mn
_x
O
₄
solid solution, were prepared by a sol-gel synthesis method employing alginate as a gelling agent. Characterized by X-Rays Diffraction (XRD) technique, the material crystallizes in the Fd-3m space group with the cubic spinel. As an anode materials for Li-ion batteries, Co
_2.78
Mn
_0.22
O
₄
exhibits high initial charge and discharge capacities of 723 and 429 mAh g
^-1
, respectively. A reversible capacity of 418 mAh g
^-1
was maintained after 50 cycles at 180 mAg
^-1
. Compared to Co
_2.82
Mn
_0.18
O
₄
, Co
_2.78
Mn
_0.22
O
₄
with high Mncontent exhibits better performances.