Schematic illustration

Major Contributions
 

1.Developed a highly efficient and stable bifunctional electrocatalyst based on atomically dispersed neighboring iron and nickel sites (FeNiN6) on nitrogen-doped carbon, wrapped with multi-walled carbon nanotubes, achieving superior oxygen reduction (ORR) and oxygen evolution (OER) reactivity compared to commercial and reference catalysts.

2.Demonstrated the practical integration of this catalyst into aqueous zinc–air batteries, achieving outstanding performance metrics such as high open-circuit voltage (1.44 V), high specific capacity (782 mAh g−1), high peak power density (218 mW cm−2), and long-term cycling durability over 600 charge/discharge cycles, surpassing conventional precious metal-based systems.

3.Combined advanced experimental characterizations and density functional theory calculations to reveal the unique synergistic electronic structure and reaction mechanism of the adjacent FeNi dual-atom sites, providing critical insight into the design principles for next-generation bifunctional catalysts based on earth-abundant elements.

主要貢獻
 

1.成功開發出基於原子級分散相鄰鐵鎳雙金屬活性位點（FeNiN6）並包覆於氮摻雜碳與多壁碳納米管上的高效穩定雙功能催化劑，展現優異的氧還原（ORR）及析氧（OER）催化活性，性能超越商用及相關參考催化劑。

2.實證該催化劑於水系鋅空氣電池的實際整合應用，展現高開路電壓（1.44 V）、高比容量（782 mAh g−1）、高峰值功率密度（218 mW cm−2）及超過600次充放電循環的長期穩定性，整體表現優於傳統貴金屬系統。

3.結合先進實驗分析與密度泛函理論計算，揭示相鄰FeNi雙原子活性位點的獨特協同電子結構及反應機制，為未來基於豐富元素的次世代雙功能催化劑設計提供關鍵理論依據。