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Cation exchange properties of LiTi[sub 2](PO[sub 4])[sub 3] and synthesis of its microporous materials via glass

Journal Article · · Journal of the Electrochemical Society; (United States)
DOI:https://doi.org/10.1149/1.2056121· OSTI ID:6539522
Lithium titanium phosphate LiTi[sub 2](PO[sub 4])[sub 3] has been found to have excellent cation-exchange properties. Lithium ions readily exchange with Na[sup +] and Ag[sup +] at room temperature but do not with other monovalent ions and divalent ions. Bulk microporous ceramics composed of a skeleton of LiTi[sub 2](PO[sub 4])[sub 3] and continuous pores have been prepared by a controlled crystallization of glasses in the pseudobinary LiTi[sub 2](PO[sub 4])[sub 3] Ca[sub 3](PO[sub 4])[sub 2] system and subsequent leaching of Ca[sub 3](PO[sub 4])[sub 2] phases with acids. The resulting porous LiTi[sub 2](PO[sub 4])[sub 3] ceramics have a porosity of [approximately]45 volume percent, a median pore diameter of 60 nm (full width at half maximum of the pore size distribution [approximately] 30 nm), and a specific surface area of [approximately]30 m[sup 2]. This is the first cation exchangeable material fabricated via glass-ceramic process, to the authors knowledge.
OSTI ID:
6539522
Journal Information:
Journal of the Electrochemical Society; (United States), Journal Name: Journal of the Electrochemical Society; (United States) Vol. 140:1; ISSN JESOAN; ISSN 0013-4651
Country of Publication:
United States
Language:
English