Sequential galvanic replacement mediated Pd-doped hollow Ru–Te nanorods for enhanced hydrogen evolution reaction mass activity in alkaline media. Issue 40 (4th October 2022)

• Record Type: Journal Article
• Authors: Ahn, Hojung; Cho, Sanghyuk; Park, Jung Tae; Jang, Hongje
• Is Part Of: Nanoscale. Volume 14:Issue 40(2022)
• Page Start: 14913
• Page End: 14920
• Publication Date: 2022-10-04
• Subjects: Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/d2nr04285a
• Languages: English
• ISSNs: 2040-3364

Abstract

Abstract : Preparation of Pd-doped hollow Ru–Te nanorods for the HER via successive galvanic replacement. Abstract : High catalytic activity, long-term stability, and economical Pt-free catalysts for the hydrogen evolution reaction (HER) are required for the conversion of renewable energy systems. Noble nanomaterial Pt is a superior electrolysis catalyst for water splitting under typical experimental conditions with a relatively low overpotential. However, the use of Pt is limited by its high cost and activity degradation over time. Among several prospective alternatives, Ru has emerged as a promising alkaline electrolysis catalyst because of its significant catalytic activity and reduced cost compared to Pt. We designed and suggested Pd-doped hollow Ru–Te nanorods (PdRuTeNRs) via successive galvanic replacement reactions of sacrificial Te nanotemplates to further boost efficiency. The Pd/partially oxidized RuO2 /Ru/Te hetero-interfaced composition exhibited an HER mass activity of 11.3 A g −1 Ru, twice that of Pt. In addition, the present PdRuTeNRs sufficiently maintained the activity from the 2000-cycle continuous test, greatly reducing the required cost by a quarter.