@article{Zeng2023, 
author = {Xiaojun Zeng and Yifei Ye and Yongqing Wang and Ronghai Yu and Martin Moskovits and Galen D. Stucky},
title = {Honeycomb-like MXene/NiFePx–NC with "continuous" single-crystal enabling high activity and robust durability in electrocatalytic oxygen evolution reactions},
year = {2023},
journal = {Journal of Advanced Ceramics},
volume = {12},
number = {3},
pages = {553-564},
keywords = {layered MXene, ultrasmall NiFePx nanoparticles (NPs), "continuous" single-crystal, honeycomb-like heterostructure, oxygen evolution reaction (OER) activity},
url = {https://www.sciopen.com/article/10.26599/JAC.2023.9220704},
doi = {10.26599/JAC.2023.9220704},
abstract = {The development of low-cost, stable, and robust non-noble metal catalysts for water oxidation is a pivotal challenge for sustainable hydrogen production through electrocatalytic water splitting. Currently, such catalysts suffer from high overpotential and sluggish kinetics in oxygen evolution reactions (OERs). Herein, we report a "continuous" single-crystal honeycomb-like MXene/NiFePx–N-doped carbon (NC) heterostructure, in which ultrasmall NiFePx nanoparticles (NPs) encapsulated in the NC are tightly anchored on a layered MXene. Interestingly, this MXene/NiFePx–NC delivers outstanding OER catalytic performance, which stems from "continuous" single-crystal characteristics, abundant active sites derived from the ultrasmall NiFePx NPs, and the stable honeycomb-like heterostructure with an open structure. The experimental results are rationalized theoretically (by density functional theory (DFT) calculations), which suggests that it is the unique MXene/NiFePx–NC heterostructure that promotes the sluggish OER, thereby enabling superior durability and excellent activity with an ultralow overpotential of 240 mV at a current density of 10 mA·cm−2.}
}