@article{Kenney2019, 
author = {Michael J. Kenney and Jianan Erick Huang and Yong Zhu and Yongtao Meng and Mingquan Xu and Guanzhou Zhu and Wei-Hsuan Hung and Yun Kuang and Mengchang Lin and Xiaoming Sun and Wu Zhou and Hongjie Dai},
title = {An electrodeposition approach to metal/metal oxide heterostructures for active hydrogen evolution catalysts in near-neutral electrolytes},
year = {2019},
journal = {Nano Research},
volume = {12},
number = {6},
pages = {1431-1435},
keywords = {catalysis, water splitting, hydrogen evolution, nanostructured materials, chemical mapping},
url = {https://www.sciopen.com/article/10.1007/s12274-019-2379-7},
doi = {10.1007/s12274-019-2379-7},
abstract = {Neutral water splitting is attractive for its use of non-corrosive and environmentally friendly electrolytes. However, catalyst development for hydrogen and oxygen evolution remains a challenge under neutral conditions. Here we report a simple electrodeposition and reductive annealing procedure to produce a highly active Ni-Co-Cr metal/metal oxide heterostructured catalyst directly on Ni foam. The resulting electrocatalyst for hydrogen evolution reaction (HER) requires only 198 mV of overpotential to reach 100 mA/cm2 in 1 M potassium phosphate (pH = 7.4) and can operate for at least two days without significant performance decay. Scanning transmission electron microscopy coupled with electron energy loss spectroscopy (STEM-EELS) imaging reveals a Ni-Co alloy core decorated with blended oxides layers of NiO, CoO and Cr2O3. The metal/metal oxide interfaces are suggested to be responsible for the high HER activity.}
}