Electrical Conductivity of Carbon Pellets from Mixtures of Pyropolymer from Oil Palm Bunch and Cotton Cellulose

Self-adhesive carbon grains (sacg1) and heat-treated kraft lignin (htkl) were prepared from the oil palm empty fruit bunch, a potential precursor for carbon products due to its large availability from palm oil mills, and sacg was prepared from cellulose (sacg2). Pellets were prepared from mixtures of sacg1 and htkl, as well as sacg1 and sacg2, with varying percentages of htkl (P htkl%) and sacg2 (P sacg2%). After carbonization up to 1000°C, the measured electrical conductivities, σ (Ω·cm)-1, of the respective pellets follow the equations σ=4.13P htkl+2.43 and σ=0.53P sacg2+2.55, respectively, indicating that htkl has improved in its conducting phase compared to sacg2.