Solid electrolytes containing both mobile and immobile alkali ions

✍ Scribed by H.Y.-P. Hong

• Book ID: 103899440
• Publisher: Elsevier Science
• Year: 1980
• Tongue: English
• Weight: 349 KB
• Volume: 5
• Category: Article
• ISSN: 0378-7753
• DOI: 10.1016/0378-7753(80)80102-9

✦ Synopsis

The basic structural feature of oxides with high alkali-ion conductivity is a rigid, three-dimensional network consisting of immobile cations and 02anions, with the mobile alkali ions partially occupying an interstitial space that is interconnected in at least one dimension. In the best-known oxide solid electrolytes, all the alkali ions are mobile. Recently, however, high alkali-ion conductivity has been observed in materials having structures in which some of the alkali ions are incorporated into the rigid network. In this paper we will discuss why structures containing both mobile and immobile alkali ions are advantageous for solid electrolytes and review the properties of the new materials, one of which -Lil.JnGedOis -has the highest Li'ion conductivity so far reported.