Structural pore elucidation of super-activated carbon based on the micro-domain structure model

다국어 초록 (Multilingual Abstract)

For elucidation of the pore structure of super-activated carbon (SAC) based on the micro-domain structuremodel, a new experiment of inverse approach was designed by ball-mill treatment. The two representativeSACs with an ultra-high specific surface area ( 3000 m2 g 1) used Maxsorb-III as a nongraphitizablecarbon and M-30 as a graphitizable carbon, which are derived from petroleum coke andmeso-phase carbon microbeads (MCMB), respectively. SACs consisting of micro-domains, are destroyedduring ball milling due to the weak-interactions between the micro-domains. The formation mechanismsof their intra-particular pores (internal slit-like micropores in micro-domain) and inter-particular pores(channeled mesopores between microdomains) are successfully explained by the N2 adsorption/desorptionisotherms, FE-SEM, HR-TEM, STEM, and electrochemical techniques. In addition, their capacitancebehaviors using different electrolytes as a probe are clearly matched with the change of micro- and mesoporesthrough the ball-mill treatment. This novel micro-domain structure model for porous carbon materialssuccessfully accounts for critical limitations of the conventional hierarchical pore structure model.

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