One-step synthesis of graphene supported platinum nanoparticles as electrocatalyst for PEM fuel cells. (26th March 2021)

• Record Type: Journal Article
• Authors: Marinoiu, Adriana; Carcadea, Elena; Sacca, Ada; Carbone, Alessandra; Sisu, Claudia; Dogaru, Andreea; Raceanu, Mircea; Varlam, Mihai
• Is Part Of: International journal of hydrogen energy. Volume 46:Number 22(2021)
• Page Start: 12242
• Page End: 12253
• Publication Date: 2021-03-26
• Subjects: Graphene -- Nanoparticles -- Electrocatalyst; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2020.04.183
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: Here in, we describe an ultrafast, single-step microwave irradiation route (MW) to prepare graphene supported Pt nanoparticles, during which the small Pt nanoparticles are distributed uniformly on a reduced graphene oxide surface. This route provides evident advantages namely low cost, easiness, low time consuming and high yield in comparison to actual chemical methods to develop efficient Pt/rGO catalyst with Pt content close to state-of-the-art commercial composition. The structure and composition of prepared samples have been studied by specific techniques, while the electrocatalytic stability has been studied using ex-situ and in-situ measurements. High performance and electrochemically stable catalyst for PEM fuel cells was developed using the sample with highest loading and good dispersion. The fabricated Pt-rGO-based MEA was investigated for durability under fuel starvation in comparison with commercial Pt/C-based MEA. The electrocatalytic activity was investigated and the electrochemical response revealed the higher stability during accelerated degradation test under fuel starvation in comparison with commercial Pt/C. This study promotes the applicability of described preparation method to noble or transition metal nanoparticles embedded on graphene-based materials. Highlights: Pt/rGOs samples were prepared using the eco-friendly microwave-assisted process. High platinum loading with good dispersion was prepared. The electrochemical stability was investigated using the accelerated stress test. The excellent stability under fuel starvation was demonstrated.