K. B. Yemel’yanov, A. Ye. Bychkov, V. L. Zelenko, L. I. Heifets
Simulation of Anodic Intercalation of Graphite in Dilute Nitric Acid
A mathematical model
of current density distribution in a porous graphite electrode (pressed
graphite suspension) during anodic intercalation of the graphite was suggested.
The anodic polarization is due to concentration nonequilibrium reflecting the
features of the process proceeding in a dilute nitric acid. Computational
solution of the boundary value problem showed that even at a small suspension
layer height (2 cm) a significant non-uniformity of spatial current density
distribution takes place, that conforms with the data provided in the
literature. A method of reducing non-uniformity of intercalation current
density by using multistep process and a method of non-uniformity estimation in
this case were suggested. Results of the computation can be used for estimation
of technical characteristics of the final product.
Copyright (C) Chemistry Dept., Moscow State University, 2002