Recent results on lithium ion conductors

✍ Scribed by Robert A. Huggins

• Publisher: Elsevier Science
• Year: 1977
• Tongue: English
• Weight: 877 KB
• Volume: 22
• Category: Article
• ISSN: 0013-4686
• DOI: 10.1016/0013-4686(77)80034-0

✦ Synopsis

Conductivity data for several new lithium ion conductors are presented. LiBN has a very open structure with intersecting tunnels in 2 dimensions. High ionic conductivity has been found at relatively low temperatures. Data indicate that the conductivity can be improved by suitable doping, as well as stoichiometric control. Solid solutions of Li,SiO, and Li,PO, have also been investigated. The unit cell of Li4Si04 contains two SiOT4 tetrahedra linked by X Li ions, which are distributed over 18 possible sites. An improvement of the conductivity of about five orders of magnitude at 100°C has been obtained at 40 mole oA Li,PO,. Solid LiAICI, has relatively large values of conductivity in the range from room temperature to its melting point at about 146°C. Upon melting, the ionic conductivity jumps to over 0.1 W ' cm I. Another group of materials are based upon the anti-fluorite structure. Data are presented on Li,S and Li,O. The related compounds Li,AIO 4, Li,Ga04, and LisZn04 have a partially occupied cation