Article ID Journal Published Year Pages File Type
1310809 Inorganica Chimica Acta 2012 5 Pages PDF
Abstract

Electrically conducting zeolite-like frameworks are largely unstudied as electronic materials, but may offer new avenues in energy applications, ranging from electrical energy storage to catalysis. We present two zeolite-like framework materials, a vanadium arsenate [(As6V15O51)−9]∞, compound (1), and a vanadium phosphate [(P6V15O51)−9]∞, compound (2), their syntheses, and physical and electrical characterization. We compare the electrical characteristics of the two compounds through the measurements of conductivity as a function of temperature and extra-framework constituents. Our results indicate that compound (1) is a mixed conductor with framework electronic conduction and ionic conduction associated with the extra-framework constituents. Compound (2), in contrast, shows only ionic conductivity. Probing the electronic properties of zeolite-like mixed conductors paves the way for the innovative use of these materials.

Graphical abstractVanadium arsenate framework exhibiting mixed conductivity: crystal structure, variable temperature conductivity, and electron micrograph of a single crystal.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Transition metal arsenate and phosphate frameworks. ► Electrical characterization. ► Mixed conductors, electronic plus ionic conduction pathways. ► Technological implications of zeolite-like mixed conductors.

Related Topics
Physical Sciences and Engineering Chemistry Inorganic Chemistry
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