Single‐Atom Enables Reverse Hydrogen Spillover for High‐Performance Protonic Ceramic Fuel Cells
Abstract
Abstract Protonic ceramic fuel cells (PCFCs) offer a promising avenue for sustainable energy conversion, however, their commercial potential is hindered by sluggish proton‐involved oxygen reduction reaction (P‐ORR) kinetics and inadequate durability of cathode materials. Here, a novel single‐atom Ru anchor on BaCe 0.125 Fe 0.875 O 3−δ (BCF) perovskite, synthesized by a facile and scalable solid‐state approach, as a potential cathode for PCFCs is reported. Theoretical and experimental analyses demonstrate that the single‐atom Ru on BCF, characterized by a unique 4‐coordinate Ru‐O‐Fe configuration, not only induces reverse hydrogen spillover but also acts as an active site for P‐ORR. The application of the optimized 2Ru‐BCF (2 wt.% Ru) cathode in a single cell delivers an exceptional peak power density of 1.78 W cm −2 at 700 °C, along with excellent operational stability over 200 h. These findings provide new insights into single‐atom engineering, advancing the commercial viability of PCFCs.
Article Details
Authors (8)
Sunce Zhao
School of Environment and Energy South China University of Technology Guangzhou 510006 China
Wenjia Ma
Beibei He
Yihan Ling
Yonglong Huang
Faculty of Materials Science and Chemistry China University of Geosciences Wuhan 430074 China
Feng Hu
Department of Chemistry, Engineering Research Center of Advanced Rare Earth Materials (Ministry of Education)
Zhu Shu
Shanghai Key Laboratory of Green Chemistry and Chemical Processes State Key Laboratory of Petroleum Molecular and Process Engineering School of Chemistry and Molecular Engineering East China Normal University Shanghai China
Ling Zhao
National Key Laboratory of Agricultural Microbiology