Polyaniline structure on common carbon supports to improve the performance of low-platinum-based ORR electrocatalysts

Abstract

Currently, the preparation of many ORR catalysts is intricate and difficult to control, or they lack stability in reaction, leading to increased costs for practical applications. In this paper, the commonly used carbon supports are combined with conductive PANI to facilely synthesized Pt-based catalysts, ensuring the stability of the catalyst. Experiments explicitly reveal the ORR activity of 40Pt/PANI-Carbon supports catalysts are enhanced significantly in comparison to the Commercial 40Pt/C-JM catalyst. Especially, ECSA of 40Pt/PANI-GO (194.4m2gPt-1) is 4.88 times than that of 40Pt/C-JM. Moreover, the integrated area of hydrogen adsorption almost keep constant after ADT, whereas that of 40Pt/C-JM reduced very significantly. Furthermore, the single cell tests definitely confirming the superiority of 40Pt/PANI-GO in activity, which the maximum power output was 2.2 times better than that of the 40Pt/C-JM catalyst. This indicates its broad application prospects and suitability for further exploration in PEMFC.