Based on the research work of teachers and the concept of green chemistry

an improved comprehensive chemical experiment project was designed: using microelement method

phytic acid as gel and dopant

ammonium persulfate as oxidant

polyaniline (PANI) electroconductive hydrogel with three-dimensional network structure was prepared

and it had good electrochemical performance. As an undergraduate comprehensive experimental project

the experiment is simple and the product is environment-friendly. While giving students perceptual knowledge

it enhances students' understanding of the preparation

material structure and electrochemical performance characterization of conductive hydrogel materials. The teaching practice shows that it can provide opportunities for undergraduates to contact the frontier of science

improve their ability to comprehensively use professional knowledge

and cultivate their ability to analyze and solve problems.