Heteroatom‑Coordinated Fe–N4 Catalysts for Enhanced Oxygen Reduction in Alkaline Seawater Zinc‑Air Batteries (IMAGE)
Caption
- A universal synthetic strategy was proposed to construct heteroatom axially coordinated Fe–N4 single-atom seawater catalyst materials (Cl–Fe–N4 and S–Fe–N4).
- The Cl–Fe–N4 catalyst achieves a limiting current density of 5.8 mA cm−2 and a half-wave potential of 0.931 V vs. RHE in alkaline synthetic seawater, outperforming commercial Pt/C (40 wt%).
- The seawater-based zinc-air battery fabricated with Cl–Fe–N4 demonstrates a power density of 187.7 mW cm−2 at 245.1 mA cm−2 and maintains stable cycling performance for 200 h.
Credit
Wenhan Fang, Kailong Xu, Xinlei Wang, Yuanhang Zhu, Xiuting Li, Hui Liu, Danlei Li*, Jun Wu*.
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CC BY-NC-ND