Can I read A.c. Impedance Analysis of Electrochemical Lithium Intercalation Into Highly Oriented Pyrolytic Graphite on EtoBox?

A.c. Impedance Analysis of Electrochemical Lithium Intercalation Into Highly Oriented Pyrolytic Graphite by Atsushi Funabiki; Minoru Inaba; Zempachi Ogumi is a Engineering article available to read on EtoBox.

What is A.c. Impedance Analysis of Electrochemical Lithium Intercalation Into Highly Oriented Pyrolytic Graphite about?

Electrochemical hthium intercalation into graphite was studied by cyclic voltammetry and a.c. impedance spectroscopy. Highly oriented pyrolytic graphite was used as a model graphite material to distinguish the difference in electrochemical behavior between the basal and the edge planes at graphite. A comparison between cyclic voltammograms of the basal plane and the whole surface of highly ortented pyrolytic graphite revealed that electrochemical lithium intercalation proceeds predominantly at the edge plane/electrolyte interface. The charge-transfer resistance changed continuously with electrode potential, and no significant change was observed at stage transition potentials ( 210, 120, and 90 mV versus Li/Li + ). From the variations of the Warburg impedance of samples of different sizes, it was concluded that lithium diffuses from the edge plane to the interior in the direction parallel to the basal plane and that its dlffusivity changes with the stage structure of the bulk lithium-graphite intercalation compound.

Who reads A.c. Impedance Analysis of Electrochemical Lithium Intercalation Into Highly Oriented Pyrolytic Graphite?

Author

Atsushi Funabiki; Minoru Inaba; Zempachi Ogumi

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0378-7753)

Published

1997

Language

EN

Field

Engineering (Physical Sciences)