Preparation of Amperometric Hydrogen-Phosphate Ion Sensor Based on Perovskite-Type Oxide Thick-Film by EPD Process

Abstract

Perovskite-type structured LaCoO₃ fine powder with high surface areas could be prepared by a polymer precursor method using acetylacetone (AcAc) as a chelating agent at 500°C. This fine powder could be used for an electrophoretic deposition (EPD) process in an acetylacetone-based suspension. The LaCoO₃ fine powder supported on carbon-cross device was prepared by the EPD method without a sintering process. The device showed good properties of amperometric sensing of hydrogen-phosphate ion.