Amorphous CoPi-coated CoP nanoarray catalyst

Alkaline HER performance surpasses intrinsic CoP

Optimizes local proton supply with amorphous cobalt phosphate, achieving HER performance in alkaline electrolyte surpassing intrinsic CoP.

Zixiao, Li · Zhang, Min · Zhengwei, Cai · Luo, Fengming · Wu, Tongwei · Yao, Yongchao · Tang, Bo · Sun, Xuping

Advanced Materials 2025

Advantages

HER performance surpassing intrinsically active CoP

State-of-the-art HER performance in alkaline electrolytes

Nanometer-thick amorphous CoPi layer

Online differential mass spectrometry, dynamic potential decay transients, spectroscopy data, and theoretical calculations revealed possible atomic scale reaction mechanisms