Metal organic framework (MOF) derived iron phosphide as a highly stable and efficient catalyst for hydrogen evolution. Issue 11 (29th August 2019)

• Record Type: Journal Article
• Authors: Yang, Qinghua; Zhang, Rongrong; Wang, Wenfeng; Zhou, Panpan; Wang, Longgang; Chen, Tianyun; Xu, Huajian; Zheng, Lei
• Is Part Of: Sustainable energy & fuels. Volume 3:Issue 11(2019)
• Page Start: 3078
• Page End: 3084
• Publication Date: 2019-08-29
• Subjects: Renewable energy sources -- Periodicals; Fuel cells -- Periodicals; Electric batteries -- Periodicals; Electrochemistry -- Periodicals; 660.297
• DOI: 10.1039/c9se00564a
• Languages: English
• ISSNs: 2398-4902

Abstract

Abstract : A facile and universal strategy for preparing metal phosphides using MOFs was designed and a highly efficient HER catalyst was developed. Abstract : Herein, a facile and universal strategy for preparing metal phosphides using metal organic frameworks (MOFs) was designed and a highly efficient hydrogen evolution reaction (HER) catalyst was developed. By employing MIL-101(Fe) as the precursor, through carbonization, in situ reduction and a direct phosphating process in the presence of NaH2 PO2, carbon-coated FeP nanoparticles (FeP-NPs/C) with a large specific surface area (114.3 m 2 g −1 ) were successfully synthesized. When applied for HER testing in 0.5 M H2 SO4 solution, the catalyst exhibited superior HER activity with an onset overpotential of 23 mV, a Tafel slope of 72 mV dec −1, an exchange current density of 0.925 mA cm −2 and an overpotential of 72 mV at a current density of 10 mA cm −2, which were comparable to or even better than those of most of the catalysts reported so far. Moreover, it exhibited no obvious decay after 1000 cycles in a long-term durability test.