Open AccessMechanisms of charge accumulation in electrochemical systems formed based on of nanoporous carbon and manganese oxide
Author(s) -
P. I. Kolkovskyi,
B. K. Ostafiychuk,
M. I. Kolkovskyi,
N.Ya. Ivanichok,
S-V.S. Sklepova,
B.І. Rachiy
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.21.4.621-627
Subject(s) - electrochemistry , nanoporous , materials science , supercapacitor , electrolyte , electrode , manganese , carbon fibers , oxide , chemical engineering , aqueous solution , inorganic chemistry , lithium (medication) , nanotechnology , chemistry , metallurgy , composite material , composite number , medicine , endocrinology , engineering
In this work, the processes occurring in electrochemical systems based on nanoporous carbon material and manganese oxide in an aqueous solution of lithium sulfate are analyzed. Furthermore, it is shows the feasibility of these materials combination cycling as electrodes of a hybrid electrochemical capacitor. The combination of electrode materials with different mechanisms of charge accumulation was determined. Consequently, an increase in the accumulated energy by more than 25% by the formation of an electric double layer and the occurrence of redox reactions based on carbon and manganese oxide respectively. The laboratory sample of an aqueous electrolyte hybrid electrochemical capacitor was formed. Moreover, the laboratory sample is electrochemically stable at an operating voltage of 2 V.