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Functional carbon derived from biomass waste has a high potential to be adapted as an active anode material for energy storage technology. Nypa fruticans or nypa plantations aim to avoid abrasion and ...generate biomass waste such as fibers. In this research, we report the utilization of activated carbon derived from Nypa fiber (ACNF) for LiNi_<0.6>Co_<0.2>Mn_<0.2>O_2 batteries. An efficient single-step pyrolysis and chemical activation process achieved the activated carbon. Cheap and commercially available KOH, H_3PO_4, and K_2CO_3 were the activating agents. The effect of activating agents on the characteristics of ACNF was deeply investigated. X-ray diffraction, FTIR, SEM-EDX, TG-DTA, and N_2 isotherms analyses were performed. XRD, FTIR, and SEM-EDX analysis confirm high carbon content samples. SEM images presented porous particles, while surface area analysis using the BET method shows that all samples have mesoporous pore size and surface area larger than 850 m^2/g. Charge discharge analysis in cylindrical-type cells shows the highest capacity of 89.5 mAh/g_<NCM>, established with KOH activation and an initial coulombic efficiency of 53.2%. Ultimately, Nypa fiber-derived activated carbon is successfully obtained and utilized in a state-of- the-art Li-ion battery cell with promising results.show more
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