Conformal Coatings of Cyclized-PAN for Mechanically Resilient Si nano-Composite Anodes

Cyclized‐polyacrylonitrile (cyclized‐PAN) is used as a conformal coating on nano‐Si for highly reversible anodes. Cyclization of PAN proceeds by limiting the pyrolysis to 300 °C such that the cyclized‐PAN maintains its polymeric properties while also providing sp2 π bonding for good electronic condu...

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Bibliographic Details
Published in:Advanced energy materials 2013-06, Vol.3 (6), p.697-702
Main Authors: Piper, Daniela Molina, Yersak, Thomas A., Son, Seoung-Bum, Kim, Seul Cham, Kang, Chan Soon, Oh, Kyu Hwan, Ban, Chunmei, Dillon, Anne C., Lee, Se-Hee
Format: Article
Language:English
Subjects:
Anodes
Bonding
coating
Coatings
Constraining
cyclization
Electronics
Nanostructure
polyacrylonitrile
Polyacrylonitriles
resilient
Silicon
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Summary:Cyclized‐polyacrylonitrile (cyclized‐PAN) is used as a conformal coating on nano‐Si for highly reversible anodes. Cyclization of PAN proceeds by limiting the pyrolysis to 300 °C such that the cyclized‐PAN maintains its polymeric properties while also providing sp2 π bonding for good electronic conductivity. Cyclized‐PAN is thus a conjugated polymer with good mechanical resiliency to accommodate Si's volumetric expansion and also good mixed conductivity.
ISSN:1614-6832
1614-6840
DOI:10.1002/aenm.201200850