Journal article

Crystallinity-Modulated Electrocatalytic Activity of a Nickel(II) Borate Thin Layer on Ni3B for Efficient Water Oxidation

Wen-Jie Jiang, Shuai Niu, Tang Tang, Qing-Hua Zhang, Xiao-Zhi Liu, Yun Zhang, Yu-Yun Chen, Ji-Hui Li, Lin Gu, Li-Jun Wan, Jin-Song Hu

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | WILEY-V C H VERLAG GMBH | Published : 2017

Abstract

The exploration of new efficient OER electrocatalysts based on nonprecious metals and the understanding of the relationship between activity and structure of electrocatalysts are important to advance electrochemical water oxidation. Herein, we developed an efficient OER electrocatalyst with nickel boride (Ni3 B) nanoparticles as cores and nickel(II) borate (Ni-Bi ) as shells (Ni-Bi @NB) via a very simple and facile aqueous reaction. This electrocatalyst exhibited a small overpotential of 302 mV at 10 mA cm-2 and Tafel slope of 52 mV dec-1 . More interestingly, it was found that the OER activity of Ni-Bi @NB was closely dependent on the crystallinity of the Ni-Bi shells. The partially crystal..

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University of Melbourne Researchers

Grants

Awarded by National Key Project on Basic Research


Awarded by National Key Research and Development Program of China


Awarded by National Natural Science Foundation of China


Awarded by Strategic Priority Research Program of the Chinese Academy of Sciences


Funding Acknowledgements

We acknowledge financial support from the National Key Project on Basic Research (2015CB932302), the National Key Research and Development Program of China (2016YFB0101202), the National Natural Science Foundation of China (91645123 and 21573249), and the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDB12020100 and XDB07030200). We thank Dr. Fen Liu, Dr. Zhijuan Zhao, and Xiaoyu Zhang for their help in XPS analysis.