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AgI Nanoplates with Mesoscopic Superionic Conductivity at Room Temperature
Author(s) -
Guo Y.G.,
Lee J.S.,
Maier J.
Publication year - 2005
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200501215
Subject(s) - mesoscopic physics , materials science , conductivity , ionic conductivity , phase (matter) , isotropy , condensed matter physics , chemical physics , ionic bonding , nanotechnology , ion , chemistry , optics , physics , electrolyte , quantum mechanics , electrode
AgI nanoplates with unusual 7H and 9R polytype phases (see Figure) have been prepared in large quantities by a solution‐based method using polyelectrolytes. The nanoplates exhibit extremely high conductivity, which is enhanced by four orders of magnitude compared to the macroscopic AgI phase (β‐AgI), and a surprising conductivity isotropy, both of which can be explained by mesoscopic ionic‐conductivity effects in polytype heterostructures.