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MODERN THEORIES OF CARBON-BASED ELECTROCHEMICAL CAPACITORS: A SHORT REVIEW...

by Vincent Meunier, Guang Feng, Jingsong J Huang, Rui Qiao, Bobby G Sumpter
Publication Type
Book Chapter
Publication Date
Page Numbers
21 to 30
Publisher Name
AMSE
Publisher Location
New York, New Jersey, United States of America

Theoretical models for electrochemical capacitors range
from the original Helmholtz model and mean-field continuum
models, to the surface curvature-based post-Helmholtz models,
and to modern atomistic simulations. Here, we review current
theoretical models that have been useful at shedding light on
experimental findings but also provide predictive capabilities
that are needed to achieve the optimization of supercapacitors.
Due to the non-planar surface of materials at the nanoscale, the
original Helmholtz model is gradually found to be outdated, in
particular for carbon materials. We show that the surface
curvature-based models provide a better description of the
interfacial behavior of carbon materials.