Unlocking the Synergistic Promoter Role of Phosphorus in Evolving NiFe Phosphides for Enhanced Water Oxidation (IMAGE)
Caption
- Phosphorus drives NiFeP’s reconstruction into active NiFe (oxy)hydroxide, suppresses Fe dissolution, and modulates Ni’s electronic structure via residual PO43−.
- PO43− and Fe synergistically act as a redox buffer, preventing Ni over-oxidation, narrowing the bandgap, and stabilizing key oxygen evolution reaction intermediates to lower the energy barrier.
- The restructured catalyst achieves a low overpotential of 225 mV at 10 mA cm−2 and maintains stable operation in alkaline media for over 100 h at current densities up to 500 mA cm−2.
Credit
Ningning Shi, Mingcheng Gao, M. Maneesha, C. S. Praveen*, Panpan Liu, Shengnan Yue, Wangjing Xie, Dechao Chen, Yu Tang, Yuanqing Wang*, Hua Fan, Xing Huang*.
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License
CC BY-NC-ND