@article{Yu2023, 
author = {Yanan Yu and Guangdong Liu and Shuaihu Jiang and Ruya Zhang and Huiqiu Deng and Eric A. Stach and Shujuan Bao and Zhenhua Zeng and Yijin Kang},
title = {Engineering the high-entropy phase of Pt-Au-Cu nanowire for electrocatalytic hydrogen evolution},
year = {2023},
journal = {Nano Research},
volume = {16},
number = {8},
pages = {10742-10747},
keywords = {hydrogen evolution reaction, phase engineering, high entropy alloys},
url = {https://www.sciopen.com/article/10.1007/s12274-023-5868-7},
doi = {10.1007/s12274-023-5868-7},
abstract = {Hydrogen economy, as the most promising alternative energy system, relies on the hydrogen production through sustainable water splitting which in turn relies on the high efficiency electrocatalysts. PtAuCu A1-phase alloy has been predicted to be a promising electrocatalyst for the hydrogen evolution. As such preferred phase of Pt-Au-Cu is not thermodynamically favored, herein, we stabilize PtAuCu alloy by engineering the high-entropy phase in the form of nanowire. Density functional theory (DFT) calculations indicate that, in comparison with the ordered phase and segregated phases with discrete hydrogen binding energy, the high-entropy phase provides a diverse combination of site composition to continuously tune the hydrogen binding energy, and thus generate a series of highly active sites for the hydrogen evolution. Reflecting the theoretical prediction, electrochemical tests show that the A1-phase PtAuCu nanowire significantly outperforms its nanoparticle counterpart with phase segregation, toward the electrocatalysis of hydrogen evolution, offering one of the best hydrogen evolution electrocatalysts.}
}