Development of promising cathode materials based on modified spinels for Li-Ion batteries

Abstract

Lithium rich compounds represent a promising cathode material of Li-ion accumulators due to their valuable electrochemical properties and represent cathode material of the next generation high-performance lithium-ion batteries.2,3 These compounds are of great interest mostly because of the high capacity exceeding 250 mAh g-1. However, a number of disadvantages, such as voltage drop caused by unwanted phase transformations during cycling, as well as low operational performances still limit their application. Improved cycling stability can be achieved by cathode materials doping (modification). Regarding costs and raw materials, Fe-Mn-based systems are economically attractive cathodes for LIB containing Fe as a cheap promising alternative to commercial LiCoO2 and LiMn2O4.