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Honeycomb-like porous carbons (HPCs) were synthesized from coal tar pitch using melamine as a soft template coupled with KOH activation. The HPCs have a specific surface area of up to 2038 m2/g and contain micropores and mesopores. As electrodes for supercapacitors, the HPCs showed a high specific capacitance of 221 F/g at 0.05 A/g in 6 M KOH electrolyte. They also demonstrated excellent rate performance with 81% capacitance retention at 20 A/g and superior cycle stability with 95.3% capacitance retention a

Author

nurkamila25

Language

EN