Abstract:
Carbon nanospheres (CNSs) with diameter of around 100 nm were synthesized by pyrolysis technique
using activated carbon as Fe-catalyst support and palm oil as carbon precursors with various
ratios. Firstly, the Fe catalyst were deposited onto the activated carbon by incipient wetness
impregnation method using Fe(NO3)2 ·9H2O as precursors with various content of catalyst (5%, 7%
and 10% with respect to the carbon support). The carbon products were characterized by X-ray
diffraction, transmission electron microscope, scanning electron microscope, Raman spectroscopy,
nitrogen adsorption and X-ray photoelectron spectroscopy. Preliminary electrochemical characteristics
of as-synthesized CNSs as anode materials of lithium secondary batteries were conducted
using Cyclic Voltammetry to observe the mechanism of Li-ion insertion/extraction during charge–
discharge tests.
