Novel metal organic frameworks derived nitrogen-doped porous carbon-covered Co3O4 nanoparticle composites as anode materials for efficient lithium storage

Metal-organic frameworks (MOFs) with porous structures derived from transition metal oxides have been shown to be effective at storing lithium and converting it. During the course of this research, N-doped porous carbon-covered Co3O4 nanoparticle composites (Co3O4/NC-2) were manufactured by employing a novel cobalt-based MOF as a sacrificial template. The N-doped porous carbon coating improves the electrical conductivity while also reducing the path that Li+ takes to diffuse through the material. During this time, the composite's volume change that occurs during galvanostatic discharge/charge cycles is effectively buffered, and the cycling stability of the composite is improved. As a result, Co3O4/NC-2 has excellent lithium storage properties. After 100 cycles at 0.1 A g(-1), the reversible capacity of Co3O4/NC-2 is 884.2 mAh g(-1). Furthermore, Co3O4/NC-2 has an excellent rate capability. The reversible specific capacity can be recovered to 1124.6 mAh g(-1) by increasing the current density from 0.1 A g(-1) to 5 A g(-1) and back to 0.1 A g(-1). We design and synthesize a novel MOF as a sacrificial template in this paper to provide a simple method for fabricating highly electrochemical electrode materials.