@misc{wang_engineering_multiple_2025, 
author={Wang, S.,Yan, H.,Huo, W.,Davydok, A.,Zając, M.,Stępień, J.,Feng, H.,Xie, Z.,Shang, J. K.,Camargo, P.H.C.,Jiang, J.,Fang, F.},
title={Engineering multiple nano-twinned high entropy alloy electrocatalysts toward efficient water electrolysis},
year={2025},
howpublished = {journal article},
doi = {https://doi.org/10.1016/j.apcatb.2024.124791},
abstract = {Inducing defects in high entropy alloys (HEAs) has been recognized as a promising approach for tuning surface energetics and catalytic activities. However, the comprehensive understanding and facile synthetic methods for defect-rich HEAs remain challenging. Herein, we present an interstitial-atom engineering strategy that involves interstitial atom doping to synthesize B-doped FeCoNiCuMoB HEA films containing abundant multiple nano-twin boundaries. The resulting fivefold-twinned FeCoNiCuMoB catalyst exhibits exceptional performance in alkaline hydrogen evolution reaction (HER, 26 mV at −10 mA cm−2) and oxygen evolution reaction (OER, 201 mV at 10 mA cm−2). Notably, the two-electrode electrolyzer composed of the FeCoNiCuMoB film electrodes achieved the 10 mA cm−2 at an ultralow cell voltage (1.48 V) for water electrolysis, simultaneously maintaining long-term durability. Through in-situ Raman spectroscopy, X-ray absorption spectroscopy (XAS), electrochemical analyses, and density functional theory (DFT) calculations, we elucidate that the unique twin boundaries play a crucial role in tailoring surficial electronic structures. Moreover, election-rich B atoms display optimized atomic configurations, synergistically contributing to a thermodynamically favourable HER/OER pathway. This work provides a platform via interstitial-atom engineering for designing exceptional HEA catalysts, integrating planar defects and electronic effects, to enhance the efficiencies in water electrolysis applications.},
note = {Online available at: \url{https://doi.org/10.1016/j.apcatb.2024.124791} (DOI). Wang, S.; Yan, H.; Huo, W.; Davydok, A.; Zając, M.; Stępień, J.; Feng, H.; Xie, Z.; Shang, J.; Camargo, P.; Jiang, J.; Fang, F.: Engineering multiple nano-twinned high entropy alloy electrocatalysts toward efficient water electrolysis. Applied Catalysis B. 2025. vol. 363, 124791. DOI: 10.1016/j.apcatb.2024.124791}}