Composites made from MOFs also perform very well at storing and converting energy . It has been shown that MOFs can act as a class of perfect precursors for the controlled carbonization in an inert atmosphere required to synthesise carbon or doped carbon materials with capacitance. Typically, during carbonization, the structuring of the carbon network always occurs concurrently with the destruction of MOFs . On ZIF-8 and ZIF-67, several investigations on carbons generated from MOFs are based. Yusuke's group originally revealed the direct carbonization method in 2012, using ZIF-8 and ZIF-67 as the initial precursors to create nanoporous carbon materials . After being subjected to acid treatment, the resulting porous carbons essentially maintained ZIF-8 and ZIF-67's initial shape and both displayed pseudocapacitive behaviour in H2SO4 aqueous electrolyte (Figure .2A -6.2F). Higher graphitic walls could be achieved for ZIF-67-derived carbon, indicating that different derived carbon materials might have different amounts of graphite due to the diverse metal components in MOFs. The ability to precisely control the morphology of MOFs is noteworthy because it may be used to control the capacitance of generated porous carbon.