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The study presents the development of high-frequency supercapacitors (SCs) using phosphorus-doped Ketjen black (PKB) nanoparticles, achieving an impressive areal capacitance of 2.26 mF cm² and a phase angle of -80.2° at 120 Hz. The enhanced performance is attributed to improved surface wettability and increased capacitive sites due to P-doping, which also facilitates better interaction between electrolyte ions and the carbon surface. These findings suggest that PKB SCs could effectively replace traditional

Author
ngthanhdong1003
Language
EN