LAUSR

Abstract In this paper, we developed a solvothermal method and subsequent heat treatment route to synthesize a novel porous structure of MgCo 2 O 4 assembled by secondary ultrafine nanoparticles. Such a porous structure can effectively promote the infiltration of electrolyte and MgCo 2 O 4 nanoparticles, thus increasing the electrochemical reaction sites of the MgCo 2 O 4 electrode during the charge/discharge process. Correspondingly, when tested as anode materials for Lithium ion batteries, the porous MgCo 2 O 4 electrode delivered a high specific capacity of 824 mAh g −1 after 150 cycles at a current density of 500 mA g −1 . Even at the high current density of 2000 mA g −1 , a reversible capacity of 543 mAh g −1 can be achieved after 350 cycles showing excellent cycle stability. Hence, the porous network architecture MgCo 2 O 4 is promising electrode materials for Lithium ion battery applications.