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Selective Covalent Basal Plane Modification as a Probe of Hydroxide Ion Conduction Pathways in Magnesium Aluminum Layered Double Hydroxides (in EN)

Journal Article · · ChemSusChem
Understanding ionic conduction in layered double hydroxides (LDHs) is a crucial step towards utilizing them as solid, hydroxide ion‐conducting electrolytes in energy conversion applications. We selectively modified the interlayer and external surfaces of MgAl LDHs with tris(hydroxymethyl)aminomethane (TRIS) ligands. By adjusting the concentration of the TRIS surface modifier, the LDH basal plane surfaces could be functionalized everywhere (internally and externally) or only externally. External modification resulted in loss of OH‐conductivity compared to pristine LDHs, confirming that external platelet surfaces are the primary ion conduction pathway.
Research Organization:
Cornell Univ., Ithaca, NY (United States)
Sponsoring Organization:
National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0019445
Other Award/Contract Number:
DGE-1845298
NNCI-2025608
OSTI ID:
2575881
Journal Information:
ChemSusChem, Journal Name: ChemSusChem Journal Issue: 18 Vol. 17; ISSN 1864-5631; ISSN 1864-564X
Publisher:
ChemPubSoc EuropeCopyright Statement
Country of Publication:
United States
Language:
EN

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