Abstract: Voltammetric behavior of spinel lithium manganese oxide on abrasive microelectrode was studied in 1mol/L LiPF₆/EC+DMC+EMC(1:1:1), and the morphology and the manganese distribution
of the abrasive microelectrode were analyzed by SEM and EDS, respectively. Results show that spinel lithium manganese oxide is more stable on abrasive
microelectrode than on powder microelectrode and has more reversibility for lithium ion extraction/intercalation.Two spinel lithium manganese oxide
samples synthesized by solid state process and sol-gel method were compared. The sample synthesized by solid state process shows its better stability for
cycling and reversibility for lithium ion extraction/intercalation. This result conforms with the difference in crystallization of two samples,
obtained by XRD. Abrasive microelectrode can be used to estimate the cyclic stability of spinel lithium manganese oxide and the reversibility
for lithium ion extraction/intercalation fast and effectively.

Key words: abrasive microelectrode, cyclic voltammetry, spinel lithium manganese oxide