@article{Li2017, 
author = {Bo Li and Shuangming Chen and Jie Tian and Ming Gong and Hangxun Xu and Li Song},
title = {Amorphous nickel-iron oxides/carbon nanohybrids for an efficient and durable oxygen evolution reaction},
year = {2017},
journal = {Nano Research},
volume = {10},
number = {11},
pages = {3629-3637},
keywords = {amorphous metal oxides, electrocatalysis, oxygen evolution reaction, sonochemistry, X-ray absorption near edge structure},
url = {https://www.sciopen.com/article/10.1007/s12274-017-1572-9},
doi = {10.1007/s12274-017-1572-9},
abstract = {Highly efficient and durable water oxidation electrocatalysts are critically important in a wide range of clean energy technologies, including water electrolyzers and rechargeable metal-air batteries. Here, we report a novel sonochemical approach to synthesize amorphous nickel-iron oxides/carbon nanohybrids with tunable compositions for the oxygen evolution reaction (OER). The sonochemically synthesized amorphous electrocatalysts with optimal composition exhibit a low overpotential of 290 mV at 10 mA·cm-2 and a Tafel slope of 31 mV·decade-1 in a 0.1 M KOH electrolyte, outperforming the benchmark RuO2 catalyst. Meanwhile, these nanohybrids are also highly stable and remain amorphous even after prolonged cycling. In addition to amorphism, sonochemistry endows as-prepared nickel-iron oxides/carbon nanohybrids with a simultaneously formed carbon scaffold and internal Ni(0), which can enhance the stability and activity for the OER. This work demonstrates that sonochemistry is a unique method for synthesizing amorphous metal oxides toward an efficient and durable OER.}
}