). The BiNS/NCL electrode also demonstrates exceptional chloride selectivity over competing anions and maintains stable performance over extended cycling. Integrated ex situ/in situ characterizations and density functional theory simulations reveal that a built‑in electric field formed at the BiNS/NCL interface thermodynamically favors chloride electrosorption, accelerates ion transport kinetics, and stabilizes the reversible Bi/BiOCl phase transformation. This study elucidates an interface-mediated dechlorination mechanism and provides a generalizable heterointerface‑engineering strategy for energy‑efficient electrochemical dechlorination systems.
Liu et al. (Wed,) studied this question.