The most scientifically proposed remedy for the prevention of the restacking between the graphene sheets is the doping of heteroatom on the graphene network. Therefore, minimising the restacking of graphene sheets is beneficial for the electrochemical performance which could be also because of suitable morphology of the graphene sheets after doping. For instance, bubble like spots and mesopores are observed in the TEM image of N-doped graphene as shown in Fig. . These bubbles prevent the agglomeration as well as the restacking between the graphene sheets that enhance the active area between the nanosheets and electrolyte ions . Thus, it furnishes more channels to accelerate the access of electrons into the interspace.