@article{Sun2023, 
author = {Hanqin Sun and Meiqi Zhao and Chao Ma and Wen Chen and Yong Yang and Yunhu Han},
title = {Construction of ultra-stable NiFe armored catalyst for liquid and flexible quasi-solid-state rechargeable Zn–air batteries},
year = {2023},
journal = {Nano Research},
volume = {16},
number = {4},
pages = {4980-4986},
keywords = {bifunctional oxygen electrocatalyst, outstanding durability, liquid Zn–air batteries, flexible quasi-solid-state Zn–air batteries},
url = {https://www.sciopen.com/article/10.1007/s12274-022-5197-2},
doi = {10.1007/s12274-022-5197-2},
abstract = {The commercial application of non-precious metal-based electrocatalysts is not only limited by the intrinsic activity of the catalysts, but also the stability of the catalysts is extremely important. Herein, we fabricated an ultra-stable NiFe armored catalyst (Ar-NiFe/NC) by a simple secondary pyrolysis strategy. The as-obtained Ar-NiFe/NC electrocatalyst exhibits an excellent bifunctional oxygen electrocatalytic performance with an activity indicator ∆E of 0.74 V vs. reversible hydrogen electrode (RHE). More importantly, the Ar-NiFe/NC electrocatalyst also shows a remarkable operational and storage stability. After accelerated durability test (ADT) cycles, no obvious degradation of oxygen electrocatalytic performance could be observed. In addition, the Ar-NiFe/NC electrocatalyst still exhibits an unbated oxygen electrocatalytic performance comparable to fresh catalysts after three months of air-exposed storage. The assembled liquid and flexible quasi-solid-state rechargeable Zn–air batteries with the Ar-NiFe/NC electrocatalyst exhibit impressive performance. The liquid rechargeable Zn–air batteries possess a high open-circuit voltage (OCV) of 1.43 V and a salient peak power density of 146.40 mW·cm−2, while the flexible quasi-solid-state rechargeable Zn–air batteries also exhibit an excellent OCV of 1.60 V and an exciting peak power density of 41.99 mW·cm−2.}
}