4 research outputs found
Particle size analysis on density, surface morphology and specific capacitance of carbon electrode from rubber wood sawdust
No full textComparative study of CO2 and H2O activation in the synthesis of carbon electrode for supercapacitors
No full textThe synthesis of carbon electrode supercapacitor from durian shell based on variations in the activation time
No full textInterconnected micro-mesoporous carbon nanofiber derived from lemongrass for high symmetric supercapacitor performance
No full textThe hierarchical porous activated carbon nanofiber has been prepared and characterized
from the biomass based of lemongrass leave waste (LG). The preparation process used a
simple technique through impregnation of ZnCl2 with low concentrations (0.5, 0.7 and 0.9)
mol/L. These three concentrations were chosen to maximize the potential of LG to produce
carbon nanoporous structures with high surface area. The preparation of activated carbon is
performed by a one-step technique, including carbonization and physical activation at a
temperature of 800 C in N2/CO2 atmosphere. The three sample variations resulted in a very
good amorphous structure according to the XRD pattern. The sample LG-0.7 has been
known to have the best physical and electrochemical properties with an SSA reaching
1694 m2 g1 with a carbon content of 90.38%. Uniquely, the LG-0.7 sample has a combined
morphological appearance of hierarchical pores such as sponges and nanofiber pores. This
combined pore strongly supports the electrochemical properties of the carbon electrode
with 256 F g1
, a specific energy of 35.6 Wh kg1 and a power density of 128.3 W kg1 obtained
using the GCD method. Electrochemical testing was carried out at a low potential of 0e1 V
with a scan rate of 1 mV s1 under the influence of an aqueous electrolyte of 1 M H2SO4.
These results demonstrate the tremendous potential of lemongrass leaf waste as a raw
material for the produce of porous carbon electrodes for high-performance supercapacitors.
© 2022 The Author(s). Published by Elsevier B.V. This is an open access article under the C
