High capacity of microspheric manganese and cobalt trimesic dual-metal organic framework for Li-ion battery

Metal organic frameworks (MOFs) have received great interest for Li-ion batteries (LIBs) owing to their variable structure and morphology. Herein, a microspheric manganese and cobalt trimesic dual-metal organic framework (MnCo-T) with diameters between 1 and 2 ​μm has been synthesized. The microspheric MnCo-T retains a high capacity of 819 mAh g −1 at 200 ​mA ​g −1 after 200cycles and exhibits good rate performance (148 mAh g −1 at 4000 ​mA ​g −1 ). Notably, it can maintain a considerable lithium storage capacity (337 mAh g −1 after 600 galvanostatic charging/discharging cycles at 1000 ​mA ​g −1 ), indicating that the design of dual-metal organic frameworks is an effective strategy for enhancing Li storage performance.