“…Among various forms of carbon materials, carbon microspheres (CMSs) have attracted substantial attention due to their particular physical properties, including minimal surface energies, controllable sizes, and diverse morphologies (hollow, hard-spherules, and beads) [1]. The CMSs have been used for various applications such as hydrogen storage [2], fuel cells [3], catalysts [4], adsorbents [5], supercapacitors [6] and drug delivery [7] due to their remarkable chemical stability, high thermal conductivity, excellent heat resistance, electrical conductivity, and self-sintering properties [8].…”