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Title: Improved bond valence models for ion transport pathways in glasses
Authors: Adams, S.N. 
Issue Date: 2008
Citation: Adams, S.N. (2008). Improved bond valence models for ion transport pathways in glasses. Materials Research Society Symposium Proceedings 1152 : 18-23. ScholarBank@NUS Repository.
Abstract: Structure property function relationships provide valuable guidelines for a systematic development of functional materials. It is demonstrated how an augmented bond valence (BV) approach helps to establish such relationships in solid electrolytes. In principle it permits to identify mobile species, transport pathways and provides estimates for ion mobilities. In this work we discuss ion conduction pathways in glassy Lithium metasilicate as an illustrative example. The required representative local structure model is derived from Molecular Dynamics simulations, which provides the opportunity to compare the bond-valence-based predictions from a static structure model with a comprehensive analysis of a complete simulation trajectory. It is shown that understanding the bond valence mismatch as an effective Morse-type interaction opens up a way for systematically analyzing ion transport pathways and for a generally applicable method with improved reliability to predict ion transport characteristics in solid electrolytes from the structure model. © 2009 Materials Research Society.
Source Title: Materials Research Society Symposium Proceedings
ISBN: 9781615677771
ISSN: 02729172
Appears in Collections:Staff Publications

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