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Iron-Doped Nickel Phosphide Nanosheet Arrays: An Efficient Bifunctional Electrocatalyst for Water Splitting

DOI

223

Citations

40

References

2017

Year

Pengyan Wang, Zonghua Pu, Yanhui Li, Lin Wu, Zhengkai Tu, Min Jiang, Zongkui Kou, Ibrahim Saana Amiinu, Shichun Mu
ACS Applied Materials & Interfaces

Abstract

Exploring efficient and earth-abundant electrocatalysts for water splitting is crucial for various renewable energy technologies. In this work, iron (Fe)-doped nickel phosphide (Ni<sub>2</sub>P) nanosheet arrays supported on nickel foam (Ni<sub>1.85</sub>Fe<sub>0.15</sub>P NSAs/NF) are fabricated through a facile hydrothermal method, followed by phosphorization. The electrochemical analysis demonstrates that the Ni<sub>1.85</sub>Fe<sub>0.15</sub>P NSAs/NF electrode possesses high electrocatalytic activity for water splitting. In 1.0 M KOH, the Ni<sub>1.85</sub>Fe<sub>0.15</sub>P NSAs/NF electrode only needs overpotentials of 106 mV at 10 mA cm<sup>-2</sup> and 270 mV at 20 mA cm<sup>-2</sup> to drive the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), respectively. Furthermore, the assembled two-electrode (Ni<sub>1.85</sub>Fe<sub>0.15</sub>P NSAs/NF∥Ni<sub>1.85</sub>Fe<sub>0.15</sub>P NSAs/NF) alkaline water electrolyzer can produce a current density of 10 mA cm<sup>-2</sup> at 1.61 V. Remarkably, it can maintain stable electrolysis over 20 h. Thus, this work undoubtedly offers a promising electrocatalyst for water splitting.

References

YearCitations

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