TY  - JOUR
AU  - Wei, Mingyang
AU  - Wang, Jing
AU  - Ma, Xiaoqing
AU  - Cao, Yuzhe
AU  - Yuan, Xiaolei
AU  - Yang, Lixia
AU  - Cai, Zhao
PY  - 2025
TI  - Lattice Cl− reconstruction in a ternary hydroxychloride pre-electrocatalyst for efficient saline water oxidation
JO  - Carbon Future
SN  - 2960-0561
SP  - 9200052
VL  - 2
IS  - 3
AB  - The development of efficient electrocatalysts for saline water oxidation (SWO) is imperative for advancing seawater splitting technology to produce green hydrogen. In this work, we report a NiFeCo hydroxychloride pre-electrocatalyst with the merits of high surface area and anti-corrosion, which exhibited both active and stable SWO performance. The lattice Cl− of NiFeCo hydroxychloride was leached during catalysis, leading to the 35.4% enlarged surface area of the catalysts, which showed a SWO overpotential of 369 mV at 100 mA·cm−2, which is 105 and 154 mV lower than that of the NiFeCo layered double hydroxide and commercial RuO2 catalysts, respectively. Moreover, in-situ Raman demonstrated the incorporation of electrolyte Cl− to the lattice of the catalysts and the re-formation of Co–Cl bonds, which resulted in the enhanced anti-corrosion performance and high electrocatalytic stability for 100 h. These results provide a convincing demonstration of the reconstruction of ternary hydroxychloride pre-electrocatalysts for efficient seawater splitting hydrogen production.
UR  - https://doi.org/10.26599/CF.2025.9200052
DO  - 10.26599/CF.2025.9200052