Synthesis and structural characterisation of the Li ion conducting garnet-related systems,Li6ALa2Nb2O12 (A=Ca, Sr)
In this paper we report structural data for the Li ion conducting garnet-related systems, Li6ALa2Nb2O12(A=Ca,Sr). For both systems, the cell is cubic, space group Ia-3d, with the Li ions located in two partially occupied crystallographic sites, Lil and Li2. High temperature studies for the A=Sr system show an increased occupancy of the Li2 site at higher temperatures. Both samples have high Li ion conductivity in agreement with previous results, and quenching the samples from elevated temperatures leads to an enhancement in the room temperature conductivity, which may be related to either increased occupancy of the Li2 site or reduced Li ion defect clustering/alkaline earth dopant-defect association in the quenched sample.
Li ion conduction Neutron diffraction Garnet
J.Percival D.Apperley P.R.Slater
Chemistry, University of Surrey, Guildford, Surrey, GU2 7XH, UK Department of Chemistry, Durham University, South Road, Durham, DH1 3LE, UK
国际会议
The 16th International Conference on Solid State Ionics(第十六届国际固态离子学会议)
上海
英文
1693-1696
2007-07-01（万方平台首次上网日期，不代表论文的发表时间）