Selective loading of atomic Pt on a RuCeOx support enables stable hydrogen evolution at high current densities

Angewandte Chemie
Tongtong LiuFeng Wang

Abstract

High-performance electrocatalysts for the hydrogen evolution reaction (HER) have an important role to play in the development of renewable energy. Despite the enormous efforts to find cheaper alternative materials, platinum remains the most efficient known HER electrocatalyst. Therefore, it is necessary to find ways to maximize Pt utilization in actual practical applications. Here we demonstrate a facile strategy for synthesizing RuCeO x -supported selectively loaded atomic Pt (0.49 wt.%) (denoted Pt/RuCeO x -PA) by photoactivation at ambient temperature and pressure. Due to the photoelectron transfer at the Mott-Schottky heterojunction in RuCeO x , Pt atoms became directionally embedded into the RuO 2 lattice. The resulting selectively loaded Pt-O-Ru moieties in Pt/RuCeO x -PA exhibit a stronger hydrogen spillover effect than Pt complexes randomly loaded by either chemical activation or thermal activation. As a result, Pt/RuCeO x -PA shows superior HER performance to the materials prepared by random loading and is even better than a commercial Pt/C catalyst with much higher Pt loading (20 wt.%) at high current densities (from 50-600 mA cm -2 ). The selective loading strategy employed in our work not only provides an effective ...Continue Reading

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Citations

Jul 25, 2021·Nano-micro Letters·Yingjie YangXinlong Tian
Oct 29, 2020·Chemical Reviews·Rui LangTao Zhang
Jan 9, 2021·ACS Applied Materials & Interfaces·Yawen DaiMeng Ni

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