ANODE ACTIVE MATERIAL COMPRISING LITHIUM MANGANESE PHOSPHATE PREPARATION METHOD THEREOF AND LITHIUM SECONDARY BATTERY OR HYBRID CAPACITOR COMPRISING THE SAME

摘要

An anode active material comprising an amorphous or quasi-crystalline lithium manganese phosphide of the following formula (1) and a process for producing the same: Formula 1 LiMn _1-x M _x PO ₄ Wherein M is at least one element selected from the group consisting of Mg, Co, Cu, Ni, Fe, Cr, and St or two or more elements thereof, and x is 0 to 0.7. The negative electrode active material of the present invention can further lower the binding force between manganese and PO ₄ to cause a smooth conversion reaction, thereby facilitating diffusion of lithium, thereby improving capacity characteristics, speed characteristics, and output characteristics of the battery. In addition, the lithium secondary battery or hybrid capacitor including the negative electrode active material has a linear shape with a constant slope of voltage curve during charging / discharging, and it is possible to predict the state of charge (SOC) It has a great advantage in application to an electric vehicle or a battery for electric power storage.