Connections matter: On the importance of pore percolation for nanoporous supercapacitors
File(s)
Accepted version
Author(s)
Vasilyev, Oleg A
Kornyshev, Alexei A
Kondrat, Svyatoslav
Type
Journal Article
Abstract
Nanoporous supercapacitors play a key role in energy storage and thereby attract growing interest from the research community. Development of porous electrodes for supercapacitors is of the paramount importance, but their characterization still remains a challenge. Herein, we analyze two examples of the popular carbide-derived and activated carbon electrodes from the point of view of interpore connectivity and ion permeation. Due to limited percolation, the effective porosity, as seen by an ion, decreases with an increase in the ion size, which can reduce the stored energy density substantially. Our results highlight the importance of high quality well-percolated porous electrodes for supercapacitors and suggest that the interpore connectivity is an important characteristic to consider when optimizing the existing and developing new electrode materials.
Date Issued
2019-08-26
Date Acceptance
2019-07-30
Citation
ACS Applied Energy Materials, 2019, 2 (8), pp.5386-5390
ISSN
2574-0962
Publisher
American Chemical Society
Start Page
5386
End Page
5390
Journal / Book Title
ACS Applied Energy Materials
Volume
2
Issue
8
Copyright Statement
© 2019 American Chemical Society.
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000483434700007&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Technology
Materials Science, Multidisciplinary
Materials Science
supercapacitors
nanoporous/microporous electrodes
carbide-derived carbons
pore percolation
interpore connectivity
pore size distribution
ion size
SIZE DISTRIBUTION
ENERGY-STORAGE
CAPACITANCE
MODEL
ADSORPTION
CARBONS
Publication Status
Published
Date Publish Online
2019-07-30