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.