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Janus structural TaON/Graphene-like carbon dual-supported Pt electrocatalyst enables efficient oxygen reduction reaction.

Authors :
Li, Zhongliang
Cao, Lili
Yang, Ting
He, Jinwei
Wang, Zelin
He, Jinlu
Zhao, Yan
Chai, Zhanli
Source :
Journal of Colloid & Interface Science. Jan2025:Part A, Vol. 677, p677-686. 10p.
Publication Year :
2025

Abstract

The Pt/TaON/GLC prepared by in-situ molecular self-assembly strategy exhibits higher ORR activity and durability, since Janus structural TaON/GLC dual-carrier presents a maximum synergy for the improvement in conductivity, O 2 adsorption and O O cleavage. [Display omitted] • Janus TaON/GLC dual-carrier is prepared via an in-situ self-assembly strategy. • The Janus structure provides strong metal-carrier and carrier-carrier interactions. • Pt/TaON/GLC exhibits higher ORR activity and durability compared to Pt/C. • TaON and GLC present the maximum synergies during ORR process. Developing carbon-supported Pt-based electrocatalysts with high activity and long-durability for the oxygen reduction reaction (ORR) is an enormous challenge for their commercial applications due to the corrosion of carbon supports in acid/alkaline solution at high potential. In this work, a Janus structural TaON/graphene-like carbon (GLC) was synthesized via an in-situ molecular selfassembly strategy, which was used as a dual-carrier for platinum (Pt). The as-obtained Pt/TaON/GLC presents high half-wave potential (0.94 V vs. RHE), excellent mass (1.48 A mg Pt -1) and specific (1.75 mA cm Pt -2) activities at 0.9 V, and superior long-term durability with a minimal loss (8.0 %) of mass activity after 10,000 cycles in alkaline solution, outperforming those of Pt/C and other catalysts. The structural characterizations and density functional theory (DFT) calculations indicate that the Pt/TaON/GLC catalyst exhibits the maximum synergies, including enhanced interfacial electron density, improved charge transfer, enhanced O 2 adsorption, and superimposed O O cleavage. This work shows a potential strategy for preparing the high-active and long-durable Pt-based electrocatalyst by synergism-promoted interface engineering. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00219797
Volume :
677
Database :
Academic Search Index
Journal :
Journal of Colloid & Interface Science
Publication Type :
Academic Journal
Accession number :
180114450
Full Text :
https://doi.org/10.1016/j.jcis.2024.07.167