@article{He2026, 
author = {Peilei He and Wei Wang and Mingxin Cai and Shuang Hou and Huiling Liu and Xun Wang},
title = {Polyoxometalates-derived lattice-confined atomically dispersed catalysts for water electrolysis},
year = {2026},
journal = {Nano Research},
volume = {19},
number = {4},
pages = {94908188},
keywords = {water splitting, electrocatalysts, atomically dispersed catalysts, polyoxometalate (POM), metal-oxo cluster},
url = {https://www.sciopen.com/article/10.26599/NR.2025.94908188},
doi = {10.26599/NR.2025.94908188},
abstract = {Atomically dispersed single-site catalysts (ADCs) have demonstrated exceptional catalytic performance that surpasses traditional catalysts, attributed to their higher atom utilization efficiency. However, a general engineering approach for converting metal-oxo clusters into efficient and stable ADCs has not been established. In this work, a universal conversion strategy is reported to synthesize a series of noble metal ADCs (NM@WO2−W, NM = Ir, Pt, Ru, and Pd) through the engineering of polyoxometalates (POMs), a well-established type of metal-oxo clusters. This strategy confines the single noble metal atom within the lattice of WO2, thereby creating lattice-confined ADCs. The as-prepared Pt@WO2−W exhibits enhanced catalytic activity for the hydrogen evolution reaction (HER), with an impressively low overpotential of 49 mV at 50 mA·cm−2 and robust durability over 50 h, with only 0.2% current density decay. Furthermore, the catalytic behavior of NM@WO2−W in the oxygen evolution reaction (OER) has also been explored, highlighting the superior electrocatalytic activity and durability of Ir@WO2−W. In situ experiments and density functional theory calculations further reveal the intrinsic activity of NM@WO2−W for both HER and OER. This work introduces a general strategy for the rational design of lattice-confined ADCs through conversion of metal-oxo clusters, providing efficient and stable ADCs for water electrolysis.}
}