Modified Biomass Carbons for Electrochemical Capacitor Electrodes (original) (raw)
The demand for energy storage devices has led to the increased development of costeffective and sustainable electrode materials for electrochemical capacitors (ECs). This project investigated low-cost biomass waste pinecone to produce activated carbon (AC) and biochar in comparison with commercial coconut shell-based AC (YP-50F) as EC electrode materials. Pinecone-based AC produced via KOH chemical activation demonstrated a gravimetric capacitance of 214 F g-1 (at 50 mV s-1 in acidic media). Biochar (Flashed pinecone) synthesized without KOH showed a good capacitive performance at the same rate. Nitrogen doping was used to introduce pseudocapacitance in both ACs and led to an improvement in gravimetric capacitance at 50 mV s-1 for doped YP-50F (154 F g
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