The hierarchical structure of organic mixed ionic-electronic conductors and its evolution in water.
Journal
Nature materials
ISSN: 1476-4660
Titre abrégé: Nat Mater
Pays: England
ID NLM: 101155473
Informations de publication
Date de publication:
27 Sep 2024
27 Sep 2024
Historique:
received:
17
01
2024
accepted:
04
09
2024
medline:
28
9
2024
pubmed:
28
9
2024
entrez:
27
9
2024
Statut:
aheadofprint
Résumé
Polymeric organic mixed ionic-electronic conductors underpin several technologies in which their electrochemical properties are desirable. These properties, however, depend on the microstructure that develops in their aqueous operational environment. We investigated the structure of a model organic mixed ionic-electronic conductor across multiple length scales using cryogenic four-dimensional scanning transmission electron microscopy in both its dry and hydrated states. Four-dimensional scanning transmission electron microscopy allows us to identify the prevalent defects in the polymer crystalline regions and to analyse the liquid crystalline nature of the polymer. The orientation maps of the dry and hydrated polymers show that swelling-induced disorder is mostly localized in discrete regions, thereby largely preserving the liquid crystalline order. Therefore, the liquid crystalline mesostructure makes electronic transport robust to electrolyte ingress. This study demonstrates that cryogenic four-dimensional scanning transmission electron microscopy provides multiscale structural insights into complex, hierarchical structures such as polymeric organic mixed ionic-electronic conductors, even in their hydrated operating state.
Identifiants
pubmed: 39333273
doi: 10.1038/s41563-024-02016-6
pii: 10.1038/s41563-024-02016-6
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Subventions
Organisme : U.S. Department of Energy (DOE)
ID : DE-SC0023411
Organisme : U.S. Department of Energy (DOE)
ID : DE-AC02-05-CH11231
Organisme : U.S. Department of Energy (DOE)
ID : DE-AC02-05-CH11231
Organisme : U.S. Department of Energy (DOE)
ID : DE-AC02-05-CH11231
Organisme : Center for Hierarchical Manufacturing, National Science Foundation (Center for Hierarchical Manufacturing)
ID : DMR 1548924
Organisme : Iran National Science Foundation (INSF)
ID : DMR 1548924
Informations de copyright
© 2024. The Author(s), under exclusive licence to Springer Nature Limited.
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