Mechano chemical synthesis of a silver ion conductor in the system AgI-Ag3PO4

Citation
N. Machida et al., Mechano chemical synthesis of a silver ion conductor in the system AgI-Ag3PO4, SOL ST ION, 136, 2000, pp. 381-386
Citations number
17
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SOLID STATE IONICS
ISSN journal
0167-2738 → ACNP
Volume
136
Year of publication
2000
Pages
381 - 386
Database
ISI
SICI code
0167-2738(200011)136:<381:MCSOAS>2.0.ZU;2-Q
Abstract
A high-energy ball-milling process was applied to the preparation of silver ion conductors from the compositions 80AgI . 20Ag(3)PO(4) and 60AgI . 40Ag (3)PO(4) (mol%) the composition 80AgI . 20Ag(3)PO(4) corresponds to that of the crystalline Ag7I4PO4 superionic phase, and the composition 60AgI . 40A g(3)PO(4) is reported as a typical composition of the superionic conducting glasses in this system. For the composition 80AgI . 20Ag(3)PO(4), ball mil ling for longer than 190 h led to the formation of an unknown new crystalli ne phase, and the new phase showed a high ion conductivity of 6 x 10(-2) S cm(-1) at room temperature. The conductivity is higher than that of the cry stalline Ag7I4PO4 phase. The ball-milling process for the composition 60AgI . 40Ag(3)PO(4) made it amorphous, and the ball-milled sample showed a high ion conductivity very similar to that of melt quenched glass with the same chemical composition. (C) 2000 Elsevier Science B.V. All rights reserved.