Bifunctional metal phosphide FeMnP films from single source metal organic chemical vapor deposition for efficient overall water splitting
- Univ. of Electronic Science and Technology of China, Chengdu (China). Inst. of Fundamental and Frontier Sciences; Univ. of Houston, Houston, TX (United States). Dept. of Electrical and Computer Engineering
- Rice Univ., Houston, TX (United States). Dept. of Chemistry
- Univ. of Houston, Houston, TX (United States). Dept. of Chemical and Biomolecular Engineering
- Univ. of Houston, Houston, TX (United States). Dept. of Physics and Texas Center for Superconductivity
- Univ. of Houston, Houston, TX (United States). Dept. of Electrical and Computer Engineering
- Univ. of Houston, TX (United States). Dept. of Electrical and Computer Engineering
- Univ. of Electronic Science and Technology of China, Chengdu (China). Inst. of Fundamental and Frontier Sciences
Developing stable and efficient bifunctional catalysts for overall water splitting into hydrogen and oxygen is a critical step in the realization of several clean-energy technologies. Here we report a robust and highly active electrocatalyst that is constructed by deposition of the ternary metal phosphide FeMnP onto graphene-protected nickel foam by metal-organic chemical vapor deposition from a single source precursor. FeMnP exhibits high electrocatalytic activity toward both the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER). Utilizing FeMnP/GNF as both the anode and the cathode for overall water splitting, a current density of 10 mA cm-2 is achieved at a cell voltage of as low as 1.55 V with excellent stability. Complementary density functional theory (DFT) calculations suggest that facets exposing both Fe and Mn sites are necessary to achieve high HER activity. The present work provides a facile strategy for fabricating highly efficient electrocatalysts from earth-abundant materials for overall water splitting.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
- Sponsoring Organization:
- National Science Foundation (NSF); Robert A. Welch Foundation; USDOE Office of Science (SC)
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1478401
- Alternate ID(s):
- OSTI ID: 1550024
OSTI ID: 22903328
- Journal Information:
- Nano Energy, Journal Name: Nano Energy Journal Issue: C Vol. 39; ISSN 2211-2855
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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