Optimizing Electrochemical Performance: A Study of Aqueous Electrolytes with Hemp-Derived Activated Carbon for Supercapacitors.

ABSTRACT: This work investigates the synthesis and electrochemical performance of hemp-derived activated carbon (HAC) for supercapacitor electrode applications. HAC was prepared through NaOH chemical activation, and its electrochemical characteristics were evaluated using three different electrolytes: acidic (H₂SO₄), neutral (Na₂SO₄), and basic (KOH). The specific surface area of HAC was found to be exceptionally high, measuring 2612 m²/g, surpassing that of commercially available activated carbon (AC). Surface analysis revealed the presence of an oxygen functional group, which provided additional pseudocapacitive active sites. When 1 M H₂SO₄ was employed as the electrolyte, HAC demonstrated a maximum specific capacitance o

SUBMITTER: Klangvijit K 

PROVIDER: S-EPMC11865974 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature