@article{Xie2024, 
author = {Mingkuan Xie and Xin Xiao and Duojie Wu and Cheng Zhen and Chunsheng Wu and Wenjuan Wang and Hao Nian and Fayan Li and Meng Danny Gu and Qiang Xu},
title = {MOF-mediated synthesis of novel PtFeCoNiMn high-entropy nano-alloy as bifunctional oxygen electrocatalysts for zinc-air battery},
year = {2024},
journal = {Nano Research},
volume = {17},
number = {6},
pages = {5288-5297},
keywords = {oxygen reduction reaction, oxygen evolution reaction, zinc-air battery, high-entropy nano-alloy},
url = {https://www.sciopen.com/article/10.1007/s12274-024-6526-4},
doi = {10.1007/s12274-024-6526-4},
abstract = {High-entropy alloy (HEA)-based materials are expected to be promising oxygen electrocatalysts due to their exceptional properties. The electronic structure regulation of HEAs plays a pivotal role in enhancing their elctrocatalytic ability. Herein, PtFeCoNiMn nanoparticles (NPs) with subtle lattice distortions are constructed on metal-organic framework-derived nitrogen-doped carbon by an ultra-rapid Joule heating process. Thanks to the modulated electronic structure and the inherent cocktail effect of HEAs, the as-synthesized PtFeCoNiMn/NC exhibits superior bifunctional electrocatalytic performance with a positive half-wave potential of 0.863 V vs. reversible hydrogen electrode (RHE) for oxygen reduction reaction and a low overpotential of 357 mV at 10 mA·cm–2 for oxygen evolution reaction. The assembled quasi-solid-state zinc-air battery using PtFeCoNiMn/NC as air electrode shows a high peak power density of 192.16 mW·cm–2, low charge−discharge voltage gap, and excellent durability over 500 cycles at 5 mA·cm–2. This work demonstrates an effective route for rational design of bifunctional nanostructured HEA electrocatalysts with favorable electronic structures, and opens up a fascinating directions for energy storage and conversion, and beyond.}
}