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Conformal Coatings of Cyclized‐PAN for Mechanically Resilient Si nano‐Composite Anodes
Author(s) -
Piper Daniela Molina,
Yersak Thomas A.,
Son SeoungBum,
Kim Seul Cham,
Kang Chan Soon,
Oh Kyu Hwan,
Ban Chunmei,
Dillon Anne C.,
Lee SeHee
Publication year - 2013
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201200850
Subject(s) - polyacrylonitrile , materials science , conformal coating , composite number , nano , conformal map , conductivity , anode , coating , polymer , conjugated system , composite material , pyrolysis , chemical engineering , polymer chemistry , electrode , chemistry , mathematical analysis , mathematics , engineering
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 sp 2 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.