FACILE SYNTHESIS OF CO3O4 NANOFLAKES EMBEDDED IN 3D POROUS CARBON MATRIX FOR LITHIUM ION BATTERY ANODES BY ELECTRODEPOSITION

摘要

The carbonaceous materials, such as graphite, are widely used as anode materials for lithium ion batteries (LIBs) because of their low cost and high operational voltage. However, modern electronic devices and vehicles require higher performance than conventional LIBs. Recently, numerous research groups have investigated the development of new anode materials to enhance the cyclability and capacity of LIB.1-6 Among the prospective materials, Co3O4 has been expected as one of the most promising anode materials for LIBs in view of their high theoretical capacity. However, Co3O4 anode materials always suffer from rapid capacity fading because of the large volume expansion and electrical isolation occurring during cycling process, which has limited its practical applications.7-9 Thus, it is highly desirable to prepare Co3O4-based anode materials with improved electrochemical performance