@article{Wang2022, 
author = {Ying Wang and Bin Yu and Ming He and Zhihua Zhai and Kuibo Yin and Fangong Kong and Zhonghua Zhang},
title = {Eutectic-derived high-entropy nanoporous nanowires for efficient and stable water-to-hydrogen conversion},
year = {2022},
journal = {Nano Research},
volume = {15},
number = {6},
pages = {4820-4826},
keywords = {high-entropy alloy, dealloying, electrocatalyst, hydrogen evolution reaction, nanoporous nanowires},
url = {https://www.sciopen.com/article/10.1007/s12274-021-4059-7},
doi = {10.1007/s12274-021-4059-7},
abstract = {Combining multiple metal elements into one nanostructure merits untold application potential but is still a challenge for the traditional bottom-up synthesis method. Herein, we propose a eutectic-directed self-templating strategy to prepare two multi-component nanostructured alloys (PtPdRhIrNi (D-SN) and NiPtPdRhIrAl (D-SS)) through the combination of rapid solidification with dealloying. The PtPdRhIrNi nanoporous nanowires (NPNWs) represent a new family of high-entropy alloys (HEAs) containing delicate hierarchical nanostructure with ultrafine ligament sizes of ~ 2 nm in addition to one-dimensional (1D) morphology. Moreover, the PtPdRhIrNi NPNWs display excellent electrocatalytic activity and stability toward hydrogen evolution reaction, with the low overpotential of 22 and 55 mV to afford a current density of 10 mA·cm−2 in 0.5 M H2SO4 and 1.0 M KOH electrolytes, respectively. The enhanced electrocatalytic performance can be attributed to the high-entropy effect favoring the surface electronic structure for the optimized activity, the promotion impact of Ni, 1D morphology facilitating the electron transport, and the nanoporous structure promoting the electrolyte diffusion.}
}