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Selective Loading of Atomic Platinum on a RuCeO x Support Enables Stable Hydrogen Evolution at High Current Densities
Author(s) -
Liu Tongtong,
Gao Wenbin,
Wang Qiqi,
Dou Meiling,
Zhang Zhengping,
Wang Feng
Publication year - 2020
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.202009612
Subject(s) - platinum , catalysis , electrocatalyst , hydrogen , hydrogen spillover , materials science , x ray photoelectron spectroscopy , chemical engineering , nanotechnology , chemistry , electrochemistry , electrode , organic chemistry , engineering
Abstract High‐performance electrocatalysts for the hydrogen evolution reaction (HER) have an important role to play in the development of renewable energy. Platinum remains the most efficient known HER electrocatalyst. Therefore, it is necessary to find ways to maximize Pt utilization in actual practical applications. Herein 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. Through the photoelectron transfer at the Mott‐Schottky heterojunction in RuCeO x , Pt atoms became embedded into the RuO 2 lattice. The resulting selectively loaded Pt‐O‐Ru moieties in Pt/RuCeO x ‐PA give 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 ).