Domain Structures of Ni and NiFe (Oxy)Hydroxide Oxygen-Evolution Catalysts from X-ray Pair Distribution Function Analysis

doi:https://doi.org/10.1021/acs.jpcc.7b10306

Title: Domain Structures of Ni and NiFe (Oxy)Hydroxide Oxygen-Evolution Catalysts from X-ray Pair Distribution Function Analysis

Abstract

Ni-Fe (oxy)hydroxides, Ni( _i-z)Fe _zO _xH _y, are among the fastest-known water oxidation catalysts in alkaline media on a per-cation basis. At current densities relevant for electrolysis (e.g., >0.5 A/cm( ^-2)), mass and electron transport through catalyst films with high mass loading are critical and depend substantially on the extended and intermediate catalyst architecture. We use X-ray pair distribution function (PDF) analysis to determine the intermediate nanostructures of electrodeposited Ni( _i-z)Fe _zO _xH _y films. We report the effects of electrodeposition technique (pulsed versus continuous), electrochemical cycling, and Fe content on the structure of the catalyst film. The PDF patterns for Ni( _i-z)Fe _zO _xH _y films are best simulated by model structures consisting of brucite-like β-Ni(OH) ₂ fragments 1 to 3 layers in thickness. Only the oxidation state of the film significantly affects the intralayer scattering behavior (i.e., metal-oxygen bond distance). The interlayer interactions, however, are affected by Fe content and deposition conditions. The domain size of many of the systems are similar, extending to similar to ~5 nm, which are best modeled by sheets containing upward of similar to ~250 metal cations. Smaller domains were found for films deposited through a larger number of electrochemical cathodic current pulses.more »« less

Authors:

Batchellor, Adam S. ^[1]; Kwon, Gihan ^[2]; Laskowski, Forrest A. L. ^[1]; Tiede, David M. ^[2];

^[1]

Univ. of Oregon, Eugene, OR (United States). Dept. of Chemistry
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS) and Chemical Sciences and Engineering Division

Publication Date:: 2017-10-20

Research Org.:: Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Chemical Sciences, Geosciences & Biosciences Division; National Science Foundation (NSF); US Air Force Academy, CO (United States); Sloan Foundation; Dreyfus Foundation; W. M. Keck Foundation; M. J. Murdock Charitable Trust; Oregon Nanoscience and Microtechnologies Inst. (ONAMI), Corvallis, OR (United States); Air Force Research Lab. (AFRL), Wright-Patterson AFB, OH (United States)

OSTI Identifier:: 1461297

Grant/Contract Number:: AC02-06CH11357; CHE-1566348; SC0001059

Resource Type:: Journal Article: Accepted Manuscript

Journal Name:: Journal of Physical Chemistry. C

Additional Journal Information:: Journal Volume: 121; Journal Issue: 45; Journal ID: ISSN 1932-7447

Publisher:: American Chemical Society

Country of Publication:: United States

Language:: English

Subject:: 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE

Citation Formats


                    Batchellor, Adam S., Kwon, Gihan, Laskowski, Forrest A.  L., Tiede, David M., and Boettcher, Shannon W. Domain Structures of Ni and NiFe (Oxy)Hydroxide Oxygen-Evolution Catalysts from X-ray Pair Distribution Function Analysis.  United States: N. p., 2017. 
        Web.  doi:10.1021/acs.jpcc.7b10306.

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                    Batchellor, Adam S., Kwon, Gihan, Laskowski, Forrest A.  L., Tiede, David M., & Boettcher, Shannon W. Domain Structures of Ni and NiFe (Oxy)Hydroxide Oxygen-Evolution Catalysts from X-ray Pair Distribution Function Analysis.  United States.  https://doi.org/10.1021/acs.jpcc.7b10306

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                    Batchellor, Adam S., Kwon, Gihan, Laskowski, Forrest A.  L., Tiede, David M., and Boettcher, Shannon W. Fri .  
        "Domain Structures of Ni and NiFe (Oxy)Hydroxide Oxygen-Evolution Catalysts from X-ray Pair Distribution Function Analysis".  United States.  https://doi.org/10.1021/acs.jpcc.7b10306.  https://www.osti.gov/servlets/purl/1461297.

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@article{osti_1461297,

  title        = {Domain Structures of Ni and NiFe (Oxy)Hydroxide Oxygen-Evolution Catalysts from X-ray Pair Distribution Function Analysis},

  author       = {Batchellor, Adam S. and Kwon, Gihan and Laskowski, Forrest A.  L. and Tiede, David M. and Boettcher, Shannon W.},

  abstractNote = {Ni-Fe (oxy)hydroxides, Ni(i-z)FezOxHy, are among the fastest-known water oxidation catalysts in alkaline media on a per-cation basis. At current densities relevant for electrolysis (e.g., >0.5 A/cm(-2)), mass and electron transport through catalyst films with high mass loading are critical and depend substantially on the extended and intermediate catalyst architecture. We use X-ray pair distribution function (PDF) analysis to determine the intermediate nanostructures of electrodeposited Ni(i-z)FezOxHy films. We report the effects of electrodeposition technique (pulsed versus continuous), electrochemical cycling, and Fe content on the structure of the catalyst film. The PDF patterns for Ni(i-z)FezOxHy films are best simulated by model structures consisting of brucite-like β-Ni(OH)2 fragments 1 to 3 layers in thickness. Only the oxidation state of the film significantly affects the intralayer scattering behavior (i.e., metal-oxygen bond distance). The interlayer interactions, however, are affected by Fe content and deposition conditions. The domain size of many of the systems are similar, extending to similar to ~5 nm, which are best modeled by sheets containing upward of similar to ~250 metal cations. Smaller domains were found for films deposited through a larger number of electrochemical cathodic current pulses. Films can be cycled between as-deposited, oxidized, and reduced states, with minimal loss of intrasheet coherence, indicating a degree of structural stability. We estimate heterogeneity in the domain structures by modeling the PDF data to linear combinations of oxyhydroxide fragments with different sizes and numbers of layers.},

  doi          = {10.1021/acs.jpcc.7b10306},

  url          = {https://www.osti.gov/biblio/1461297},
  journal      = {Journal of Physical Chemistry. C},

  issn         = {1932-7447},

  number       = 45,

  volume       = 121,

  place        = {United States},

  year         = {2017},

  month        = {10}

}

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Works referencing / citing this record:

Ternary Ni-Co-Fe oxyhydroxide oxygen evolution catalysts: Intrinsic activity trends, electrical conductivity, and electronic band structure
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Stevens, Michaela Burke; Enman, Lisa J.; Korkus, Ester Hamal
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Identifying high-efficiency oxygen evolution electrocatalysts from Co–Ni–Cu based selenides through combinatorial electrodeposition
journal, January 2019

Cao, Xi; Johnson, Emily; Nath, Manashi
Journal of Materials Chemistry A, Vol. 7, Issue 16
https://doi.org/10.1039/c9ta00863b

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Similar Records

Title: Domain Structures of Ni and NiFe (Oxy)Hydroxide Oxygen-Evolution Catalysts from X-ray Pair Distribution Function Analysis

Abstract

Citation Formats

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