Hydrated Cobalt Phosphate Electrocatalyst

Water of Crystallization Boosts OER Activity

Compared to anhydrous cobalt phosphate, the water of crystallization increases oxygen vacancy concentration, enhances conductivity, and modifies electronic structure, leading to higher OER activity and structural stability against complete hydroxylation.

Zhang, Wei · Zheng, Renji · Han, Ning · Wei, Guo · Liu, Qiong · Zhijie, Chen · Dou, Yu Hai · Zhang, Xuan · Luo, Jiangshui · Fransaer, Jan

ACS Materials Letters 2024

Advantages

Water of crystallization increases oxygen vacancy concentration

Water of crystallization enhances electrical conductivity

Water of crystallization sustains structural stability, preventing complete hydroxylation