SCIENCE@home

Anion Shielding in Nb-WO3/WS2 Heterostructures: A Strategy for Efficient and Corrosion-Resistant Seawater Electrolysis.

Lin Yang,Zihao Xing,Yijun Chen,Ming Yang,Wei Liu,Kaichi Qin,Xinran Sun,Qianyu Li,Meiling Xiao,Zhiyu Jia,Jinfa Chang

Published 2025 in Small

ABSTRACT

Seawater electrolysis is a promising route for sustainable hydrogen production, but chloride-induced corrosion severely limits its practicality. Here, a dual-modulated Nb-WO3/WS2 heterostructure electrocatalyst that simultaneously enhances oxygen evolution reaction (OER) kinetics and resists chloride corrosion is designed. The Nb-WO3/WS2 anode achieves remarkably low overpotentials of 212 and 369 mV at 10 and 100 mA cm-2, respectively, in alkaline simulated seawater, with a Tafel slope of 35.58 mV dec-1. The catalyst also exhibits remarkable stability, maintaining performance over 1000 CV cycles. Mechanistic studies reveal that Nb doping introduces oxygen vacancies and modulates the electronic structure, while the in situ formation of a WOx protective layer during OER effectively repels Cl- via anion shielding. This work provides a strategic approach to developing durable, efficient, and non-precious-metal-based catalysts for seawater splitting.

PUBLICATION RECORD

CITATION MAP

EXTRACTION MAP

CLAIMS

  • No claims are published for this paper.

CONCEPTS

  • No concepts are published for this paper.

REFERENCES

Showing 1-61 of 61 references · Page 1 of 1

CITED BY