Open AccessElectrochemical properties of nanoporous carbon materials obtained from raw materials of plant origin (hemp shives)
Author(s) -
N.Ya. Ivanichok,
Іван Михайлович Будзуляк,
M. I. Moiseienko,
R. P. Lisovskiy,
Богдан Іванович Рачій,
Anna Gamarnyk,
Liliia Turovska,
S. A. Lisovska
Publication year - 2020
Publication title -
fìzika ì hìmìâ tverdogo tìla
Language(s) - English
Resource type - Journals
eISSN - 2309-8589
pISSN - 1729-4428
DOI - 10.15330/pcss.21.1.35-42
Subject(s) - capacitance , nanoporous , electrochemistry , raw material , supercapacitor , phosphoric acid , carbon fibers , materials science , biomass (ecology) , capacitor , activated carbon , chemical engineering , electrode , specific surface area , chemistry , composite material , nanotechnology , voltage , adsorption , metallurgy , organic chemistry , electrical engineering , oceanography , engineering , geology , composite number , catalysis
The paper reveals the results of electrochemical studies of activated nanoporous carbon material (NPC) as an electrode material for electrochemical capacitors (EC), the charge of which is accumulated in an electrical double layer (EDL). NPC material has been obtained from raw material of plant origin (hemp shives) by thermochemical activation using phosphoric acid. It has been established that there is an optimal ratio between the amount of acid and precursor based on plant biomass that is equal to 0.75:1. The specific surface area of the obtained NPCwas ~ 2000 m2/g, and the maximum specific capacitance of EC models based on them was ~ 113 F/g. At the same time, the contribution of the EDL capacitance to the total capacitance is 60-80 %.