Revising known concepts for novel applications: Fe incorporation into Ni-MOF-74 derived oxygen evolution electrocatalysts for anion exchange membrane water electrolysis

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{
  "updated": "2024-10-09T14:45:32.587045+00:00", 
  "metadata": {
    "_oai": {
      "id": "oai:materialscloud.org:2387"
    }, 
    "version": 1, 
    "is_last": true, 
    "_files": [
      {
        "size": 73852, 
        "checksum": "md5:8ab488df6cfad6dcd3788668b8eab4e4", 
        "key": "Figure 1.zip", 
        "description": "OER performance of Ni-MOF-74 and its Fe uptake from Fe-containing 0.1 M KOH"
      }, 
      {
        "size": 269488, 
        "checksum": "md5:875ba427cd29ebb235d6a7eaadfa46b9", 
        "key": "Figure 2.zip", 
        "description": "Ex situ XRD and operando hXAS measurements of Ni-MOF-74 in Fe-free and 5 ppm Fe contaminated 0.1 M KOH electrolyte"
      }, 
      {
        "size": 70883, 
        "checksum": "md5:bf5d3e13c57bf2683d54e18359abf5f9", 
        "key": "Figure 3.zip", 
        "description": "Activity and Stability of Ni-MOC* upon Fe incorporation from Fe-containing 0.1 M KOH electrolyte"
      }, 
      {
        "size": 126211, 
        "checksum": "md5:bc9d5f65c15b9259880aad50823353e8", 
        "key": "Figure 4.zip", 
        "description": "Operando hXAS measurements of Ni K edge of Ni-MOC* during OER in clean and 5 ppm Fe contaminated 0.1 M KOH"
      }, 
      {
        "size": 8464231, 
        "checksum": "md5:5a11475e29d240ba40df3d04baacbac1", 
        "key": "Figure 5.zip", 
        "description": "Performance of Ni-MOC* anode in AEM-WE in Fe-free and 3 ppm Fe contaminated 1 M KOH"
      }
    ], 
    "keywords": [
      "OER", 
      "MARVEL", 
      "electrocatalysis", 
      "Ni-MOF-74", 
      "alkaline/AEM water electrolysis", 
      "operando XAS/XRD", 
      "Fe effect on Ni-based OER catalysts"
    ], 
    "description": "The performance of Ni-based oxygen evolution reaction (OER) electrocatalysts is enhanced upon Fe incorporation into the structure or Fe uptake from the electrolyte. In light of the promising potential of metal-organic framework (MOF) electrocatalysts for water splitting, Ni-MOF-74 is used as a model catalyst to study the effect of Fe incorporation from KOH electrolyte on the electrocatalyst\u2019s OER activity and stability. The insights obtained from X-ray diffraction and operando X-ray absorption spectroscopy characterizations of Ni-MOF-74 and an amorphous Ni metal organic compound (Ni-MOC*)  reveal that Fe uptake enhances OER by two processes: higher Ni oxidation states and enhanced flexibility of the electronic state and local structure when cycling the potential below and above the OER onset. To demonstrate the impressive OER activity and stability in Fe containing KOH, an Ni-MOC* anode was implemented in an anion exchange membrane water electrolyzer (AEM-WE) with 3 ppm Fe containing 1 M KOH electrolyte resulting in an outstanding cell voltage of 1.7 V (at an anode potential of 1.51 V) at 60 \u00b0C and 0.5 A cm-2 exceeding 130 h of stable continuous operation.", 
    "contributors": [
      {
        "affiliations": [
          "PSI Center for Energy and Environmental Sciences, 5232 Villigen PSI, Switzerland"
        ], 
        "givennames": "Julia", 
        "familyname": "Linke"
      }, 
      {
        "affiliations": [
          "PSI Center for Energy and Environmental Sciences, 5232 Villigen PSI, Switzerland"
        ], 
        "givennames": "Thomas", 
        "familyname": "Rohrbach"
      }, 
      {
        "affiliations": [
          "PSI Center for Photon Science, 5232 Villigen PSI, Switzerland"
        ], 
        "givennames": "Adam Hugh", 
        "familyname": "Clark"
      }, 
      {
        "affiliations": [
          "PSI Center for Photon Science, 5232 Villigen PSI, Switzerland"
        ], 
        "givennames": "Camelia", 
        "familyname": "Borca"
      }, 
      {
        "affiliations": [
          "PSI Center for Photon Science, 5232 Villigen PSI, Switzerland"
        ], 
        "givennames": "Thomas", 
        "familyname": "Huthwelker"
      }, 
      {
        "affiliations": [
          "Department of Energy Conversion and Storage, Technical University of Denmark, Kongens Lyngby, Denmark"
        ], 
        "givennames": "Fabian Luca", 
        "familyname": "Buchauer"
      }, 
      {
        "affiliations": [
          "Department of Energy Conversion and Storage, Technical University of Denmark, Kongens Lyngby, Denmark"
        ], 
        "givennames": "Mikkel Ryk\u00e6r", 
        "familyname": "Kraglund"
      }, 
      {
        "affiliations": [
          "Department of Energy Conversion and Storage, Technical University of Denmark, Kongens Lyngby, Denmark"
        ], 
        "givennames": "Christodoulos", 
        "familyname": "Chatzichristodoulou"
      }, 
      {
        "affiliations": [
          "PSI Center for Energy and Environmental Sciences, 5232 Villigen PSI, Switzerland"
        ], 
        "givennames": "Eibhlin", 
        "familyname": "Meade"
      }, 
      {
        "affiliations": [
          "PSI Center for Energy and Environmental Sciences, 5232 Villigen PSI, Switzerland"
        ], 
        "givennames": "Julie", 
        "familyname": "Guehl"
      }, 
      {
        "affiliations": [
          "PSI Center for Energy and Environmental Sciences, 5232 Villigen PSI, Switzerland"
        ], 
        "givennames": "Mateusz", 
        "familyname": "Wojtas"
      }, 
      {
        "affiliations": [
          "PSI Center for Energy and Environmental Sciences, 5232 Villigen PSI, Switzerland"
        ], 
        "givennames": "Marco", 
        "familyname": "Ranocchiari"
      }, 
      {
        "affiliations": [
          "PSI Center for Energy and Environmental Sciences, 5232 Villigen PSI, Switzerland", 
          "Institute of Molecular Physical Science, ETH Z\u00fcrich, 8093 Z\u00fcrich, Switzerland"
        ], 
        "givennames": "Thomas Justus", 
        "familyname": "Schmidt"
      }, 
      {
        "affiliations": [
          "PSI Center for Energy and Environmental Sciences, 5232 Villigen PSI, Switzerland"
        ], 
        "givennames": "Emiliana", 
        "email": "emiliana.fabbri@psi.ch", 
        "familyname": "Fabbri"
      }
    ], 
    "edited_by": 576, 
    "owner": 1508, 
    "doi": "10.24435/materialscloud:q2-rd", 
    "title": "Revising known concepts for novel applications: Fe incorporation into Ni-MOF-74 derived oxygen evolution electrocatalysts for anion exchange membrane water electrolysis", 
    "license": "Creative Commons Attribution 4.0 International", 
    "mcid": "2024.151", 
    "id": "2387", 
    "conceptrecid": "2386", 
    "status": "published", 
    "publication_date": "Oct 09, 2024, 16:45:32", 
    "license_addendum": null, 
    "references": [
      {
        "comment": "Energy & Environmental Science (submitted)", 
        "type": "Journal reference", 
        "citation": "J. Linke, T. Rohrbach, A. H. Clark, C. Borca, T. Huthwelker, F. L. Buchauer, M. R. Kraglund, C. Chatzichristodoulou, E. Meade, J. Guehl, M. Wojtas, M. Ranocchiari, T. J. Schmidt, E. Fabbri"
      }
    ]
  }, 
  "id": "2387", 
  "revision": 4, 
  "created": "2024-10-08T11:44:30.012202+00:00"
}