Hydrated FePO4 nanoparticles supported on P-doped RGO show enhanced ORR activity compared to their dehydrated form in an alkaline medium. Issue 42 (8th August 2019)

• Record Type: Journal Article
• Authors: Ahmed, Zubair; Rai, Ritu; Kumar, Rajinder; Maruyama, Takahiro; Bagchi, Vivek
• Is Part Of: RSC advances. Volume 9:Issue 42(2019)
• Page Start: 24654
• Page End: 24658
• Publication Date: 2019-08-08
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c9ra04070f
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : One-step hydrothermal growth of FePO4 nanoparticles (15–25 nm) uniformly decorated on the P-doped reduced graphene oxide (PRGO) was studied for oxygen reduction reaction (ORR) activity. Abstract : One-step hydrothermal growth of FePO4 nanoparticles (15–25 nm) uniformly decorated on the P-doped reduced graphene oxide (PRGO) was studied for oxygen reduction reaction (ORR) activity. The role of lattice water in the enhancement of catalytic activity in the hydrated FePO4 ·2H2 O with respect to its dehydrated form in the alkaline medium was contested. The hydrodynamic LSV at 1600 rpm in alkaline medium (0.1 M KOH electrolyte) indicates an increase in the cathodic current density of the PRGO supported FePO4 ·2H2 O catalyst, which reaches as high as 5.8 mA cm −2, close to the best known commercially available Pt/C catalyst. The stability in terms of retention of activity after 22 000 s with the hydrated form was found to be 90.7% which is 26.7% higher than that of the dehydrated form.