Electrode stability has been an important parameter in energy conversion and storage devices.However,many of these electrodes suffer from irreversible degradation,such as,irreversible sulfation in negative electrode of lead acid battery(LAB)[1].Adding porous and conductive carbon additive in the electrodes of LABs is a promising alternative strategy to solve the sulfation [2].The structural design of porous carbon plays an important role in this process [3].We here report the synthesis of graphitized mesoporous carbons(GMCs),which derived from zeolitic imidazolate frameworks-8(ZIF-8)via controlling the annealing parameters,as porous media for suppressing the irreversible sulfation.X-ray diffraction(XRD)test and Raman spectra reveal that the GMCs present long-range ordering in the carbon matrices along with some graphitization.N2 adsorption–desorption test indicates a typical mesoporous feature caused by uniform and simple connecting pores.As an additive in negative electrode of LABs,the cycle life of LAB with GMC additive is about 8.5 times of that without the additive.GMC additive effectively retards the irreversible sulfation by controlling the growing size of PbSO4 crystal particles in LAB because the conductive network provide nucleating sites for PbSO4 crystal growth and pore structure in the conductive network can limit the growth of lead sulfate.The work reveals a facile but efficient synthesis approach of additive to extend the cycle life of capacitive energy storage,as well as provides theoretical guidance for improving the performance of commercial energy storage devices.