Hollow Structure Derived Phosphide Nanosheets for Water Oxidation
Avoiding the stacking of active sites in catalyst structural design is a promising route for realizing active oxygen evolution reaction (OER). Herein, using a CoFe Prussian blue analoge cube with hollow structure (C-CoFe PBA) as a derived support, a highly effective Ni<sub>2</sub>P-FeP<sub>4</sub>-Co<sub>2</sub>P catalyst with a larger specific surface area is reported. Benefiting from the abundant active sites and fast charge transfer capability of the phosphide nanosheets, the Ni<sub>2</sub>P-FeP<sub>4</sub>-Co<sub>2</sub>P catalyst in 1 m KOH requires only overpotentials of 248 and 277 mV to reach current density of 10 and 50 mA cm<sup>-2</sup> and outperforms the commercial catalyst RuO<sub>2</sub> and most reported non-noble metal OER catalysts. In addition, the two-electrode system consisting of Ni<sub>2</sub>P-FeP<sub>4</sub>-Co<sub>2</sub>P and Pt/C is able to achieve a current density of 10 and 50 mA cm<sup>-2</sup> at 1.529 and 1.65 V. This work provides more ideas and directions for synthesizing transition metal catalysts for efficient OER performance.
Authors
- Ying Dong (ORCID: https://orcid.org/0000-0001-7581-6336)
- Yadong Wang (ORCID: https://orcid.org/0000-0002-2093-026X)
- Jixiang Jiao
- Shichun C. Mu (ORCID: https://orcid.org/0000-0003-3902-0976)
- Jun Yu
Institutions
- Wuhan University of Technology (CN)
Publication Details
- Journal
- Small
- Published
- 2024-08-30
- DOI
- https://doi.org/10.1002/smll.202406105
- Citations
- 22
- Primary Topic
- Electrocatalysts for Energy Conversion
- Type
- article
- Field-Weighted Citation Impact
- 2.25
Funders
- National Natural Science Foundation of China
- Wuhan University
- Wuhan University of Technology
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
- Fundamental Research Funds for the Central Universities