Citation: Jing-Yi Xie, Hui-Ying Zhao, Yi-Wen Dong, Yang Wu, Da-Peng Liu, Yong-Ming Chai, Bin Dong. Hollow Fe4C/FeP Nanoboxes with Heterostructure and Carbon Armor for Efficient and Stable Hydrogen Evolution[J]. Chinese Journal of Structural Chemistry, ;2022, 41(7): 220705. doi: 10.14102/j.cnki.0254-5861.2022-0102 shu

Hollow Fe4C/FeP Nanoboxes with Heterostructure and Carbon Armor for Efficient and Stable Hydrogen Evolution

  • Corresponding author: Da-Peng Liu, liudp@upc.edu.cn Bin Dong, dongbin@upc.edu.cn
  • Received Date: 30 April 2022
    Accepted Date: 18 May 2022
    Available Online: 23 May 2022

Figures(6)

  • The heterojunction interfacial modulation of FeP is an effective strategy to regulate the intrinsic activity and stability, which is a major challenge to promote the industrial application of FeP-based electrocatalysts. Herein, hollow Fe4C/FeP box with heterojunction interface and carbon armor is successfully synthesized, which can expose numerous active sites and protect catalyst from corrosion. Electrochemical measurements show that Fe4C/FeP exhibits excellent hydrogen evolution activity and stability. It only needs 180 mV to achieve the current density of 10 mA cm-2. The high-activity may be due to the synergistic effects of porous framework, graphitic carbon coating and heterojunction structure of Fe4C and FeP, which optimize the electronic structure and accelerates electron transfer. In addition, the target catalyst can withstand 5000 cycles of CV testing without significant change in properties. The excellent stability may be attributed to the graphitic carbon coating as the armor that can prevent the catalyst from corrosion of electrolyte. This work may provide a synthetic approach to produce a series of carbon-coated and heterojunction structure of transition metal phosphides for water splitting.
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