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Bifunctional metal phosphide FeMnP films from single source metal organic chemical vapor deposition for efficient overall water splitting

Journal Article · · Nano Energy
 [1];  [2];  [2];  [3];  [2];  [4];  [5];  [6];  [3];  [4];  [4];  [4];  [7];  [2];  [1]
  1. 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
  2. Rice Univ., Houston, TX (United States). Dept. of Chemistry
  3. Univ. of Houston, Houston, TX (United States). Dept. of Chemical and Biomolecular Engineering
  4. Univ. of Houston, Houston, TX (United States). Dept. of Physics and Texas Center for Superconductivity
  5. Univ. of Houston, Houston, TX (United States). Dept. of Electrical and Computer Engineering
  6. Univ. of Houston, TX (United States). Dept. of Electrical and Computer Engineering
  7. 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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Facile, Room Temperature, Electroless Deposited (Fe 1− x , Mn x )OOH Nanosheets as Advanced Catalysts: The Role of Mn Incorporation journal July 2018
Preparation of Fe–Co–P–Gr/NF Coating via Electroless Composite Plating as Efficient Electrocatalysts for Overall Water Splitting journal January 2020
Engineering transition metal phosphide nanomaterials as highly active electrocatalysts for water splitting journal January 2017
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Ferric phosphide carbon nanocomposites emerging as highly active electrocatalysts for the hydrogen evolution reaction journal January 2018
Colloidal Ni 2−x Co x P nanocrystals for the hydrogen evolution reaction journal January 2018
Ultrathin carbon coated CoO nanosheet arrays as efficient electrocatalysts for the hydrogen evolution reaction journal January 2019
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Noble metal-free two dimensional carbon-based electrocatalysts for water splitting journal December 2019