PtAg Alloy Nanoparticles Embedded in Polyaniline as Electrocatalysts for Formate Oxidation and Hydrogen Evolution
Source abstract
Abstract
We successfully synthesized partly crystalline polyaniline (c-PANI) induced by PtAg alloy nanoparticles (c-PANI@PtAg). The liquid phase reduction PtAg nanoparticles were directly embedded in the c-PANI on a Pt sheet (c-PANI@PtAg/Pt) by in situ polymerization. c-PANI@PtAg/Pt demonstrated excellent electrocatalysis for formate oxidation reaction (FOR) and hydrogen evolution reaction (HER). The ordered structure of c-PANI showed a peak-separation effect and therefore significantly enhanced the catalytic path selectivity of c-PANI@PtAg/Pt for FOR. Meanwhile the current holding ratio after 1000 circles of voltamogram scanning reaches 91.4%. Research on the electrocatalysis of c-PANI@Pt1Ag0.5/Pt for HER indicated the overpotentials at 1.0 mA cm–2 in both acid and alkaline solutions were more positive than that of pure Pt. Moreover, c-PANI@PtAg/Pt exhibits a much lower overpotential of 68 mV than that of 115 mV of Pt and a smaller Tafel slope of 27 mV dec–1 than that of 46 mV dec–1 of Pt.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Conducting polymers and applications · Electrocatalysts for Energy Conversion · Advanced battery technologies research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Chemistry, College of Science, Northeastern University, Shenyang, 110819, China
Funding
Northeastern University
References (38)
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