Simulated OH⁻ concentration distributions on HC-CoFeNi nanocones and corresponding OER polarization behavior before and after magnetic activation.

Major Contributions
 

1.Designed nanocone-structured CoFeNi catalysts that couple electric and magnetic fields to modulate interfacial microenvironments, concentrating OH⁻ ions and enhancing local field intensity for efficient OER kinetics. 

2.Revealed through in-situ Raman and ATR-FTIR analyses that near-field coupling accelerates metal hydroxylation, deprotonation, and Co⁴⁺ formation, driving rapid surface reconstruction and lattice oxygen activation. 

3.Demonstrated outstanding OER performance with a 400% increase in current density at 1.57 V vs RHE and prolonged stability at 500 mA cm⁻² for over 500 hours, validating field-guided catalyst activation as a strategy for durable, high-efficiency water oxidation.

主要貢獻
 

1.電磁場耦合調控界面微環境：設計了奈米錐（Nanocone）結構的 CoFeNi 催化劑，利用電場與磁場的耦合效應來調控界面微環境。此設計能有效富集（concentrate）$OH^-$ 離子並增強局部場強，進而大幅提升析氧反應（OER）的動力學效率。

2.原位光譜揭示高價重構機制：透過原位拉曼（In-situ Raman）與 ATR-FTIR 分析揭示，近場耦合效應（near-field coupling）加速了金屬的羥基化、去質子化以及 Co4+（高價鈷）的形成，進而驅動快速的表面重構與晶格氧活化（Lattice oxygen activation）。

3.卓越性能與穩定性驗證：該材料展現了卓越的 OER 性能，在 1.57 V (vs. RHE) 電位下，電流密度提升了 400%，並能在 500 mA cm-2 的大電流下穩定運行超過 500 小時。這證實了「場導引催化劑活化」是實現耐久且高效水氧化反應的可行策略。