• • In-situ reconstructed Ru atom arrays on α-MnO2 achieved enhanced performance for acidic oxygen evolution, with a reported overpotential reduction of approximately 50 mV at 10 mA/cm² compared to conventional RuO2, directly addressing the sluggish kinetics that limit proton exchange membrane electrolyzers.
• • One-dimensional single atom arrays on ferroelectric nanosheets enabled enhanced CO2 photoreduction, yielding a CO production rate of 45.6 μmol g⁻¹ h⁻¹ with 92% selectivity, surpassing random SACs by a factor of 3.2, which is critical for closing the carbon cycle in industrial flue gas utilization.
• • High-loading single-atom Cu dispersed on graphene achieved efficient oxygen reduction reaction with a half-wave potential of 0.89 V vs. RHE, exceeding commercial Pt/C by 30 mV, demonstrating potential for cost-effective fuel cell cathodes where Pt scarcity and price volatility remain major industrial bottlenecks.
• • Adjacent atomic platinum sites enabled single-atom iron with high oxygen reduction reaction performance, showing a turnover frequency of 2.8 e⁻ site⁻¹ s⁻¹ at 0.85 V, which is 5.6 times higher than isolated Fe-N4 sites, highlighting the critical role of atomic spacing in optimizing binding energies for practical fuel cell operation.