In Situ Boron Nitride-Stabilised High-Entropy Alloys for Selective CO2 Electroreduction: Part 2 Mode 3 (2026)
Abstract
We report a facile synthesis of boron nitride (BN)-supported high-entropy alloys (HEAs) via ball milling of nitrogen and boron sources with metal precursors, followed by simple annealing under inert atmosphere. The in-situ formed boron nitride matrix stabilises the dispersion and composition of HEAs during synthesis. These catalysts exhibit excellent performance in electrochemical carbon dioxide (CO2) reduction to ethylene (C2H4), with an outstanding Faradaic efficiency up to 47.2%. This study highlights the role of BN protection in achieving controlled HEA synthesis and demonstrates the potential of HEAs for efficient and selective CO2 conversion.
