<?xml version="1.0" encoding="utf-8"?>
<export-example>
  <doc>
    <id>4832</id>
    <completedYear>2025</completedYear>
    <publishedYear>2025</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>2025</volume>
    <type>article</type>
    <publisherName>Wiley-VCH</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2025-09-28</completedDate>
    <publishedDate>2025-09-28</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Electrodeposition of Mo-Rich NiMo Catalysts: Effect of Deposition Parameters and Oxygen Content on the Alkaline Hydrogen Evolution Reaction Activity</title>
    <abstract language="eng">Electrodeposited Mo-rich NiMo catalysts offer enhanced catalytic activity for the alkaline hydrogen evolution reaction (HER) and provide an electrically conductive, binder-free substrate connection, making them promising catalysts for green hydrogen production. However, creating Mo-rich deposits is challenging, as the codeposition process typically favors Ni. Optimal deposition conditions for Mo-rich NiMo catalysts remain insufficiently explored. This article investigates Mo-rich NiMo electrodeposition from an ammonia-free citrate bath using NaSO4 as a chlorine-free support electrolyte. The effects of the deposition parameters, 1) sodium molybdate concentration in the electrolyte, 2) deposition current density, and 3) enhanced mass transport via working electrode rotation on the alkaline HER activity, were studied. The electrodeposits, containing 44–66 wt% Mo, exhibited increased surface area due to a rough, cracked morphology and variable oxygen content of the catalyst. The oxygen content was linked to HER activity, revealing an inhibiting effect. The lowest overpotential of 118 mV at −10  mA cm−2 for the alkaline HER was achieved using an electrolyte with 0.02 mol L−1 sodium molybdate, a deposition current density of 600 mA cm−2, without electrode rotation. Respective samples combined a favorable Ni:Mo ratio comprising 56 wt% Mo content with increased surface area and low oxygen content.</abstract>
    <parentTitle language="eng">ChemElectroChem</parentTitle>
    <identifier type="doi">10.1002/celc.202500300</identifier>
    <identifier type="urn">urn:nbn:de:hbz:1010-opus4-48327</identifier>
    <enrichment key="opus.source">publish</enrichment>
    <licence>Creative Commons - Namensnennung</licence>
    <author>Leonard Böhm</author>
    <author>Maximilian Cieluch</author>
    <author>Norbert Kazamer</author>
    <author>Florian Josef Wirkert</author>
    <author>Gabriela Marginean</author>
    <author>Ulf-Peter Apfel</author>
    <author>Michael Brodmann</author>
    <collection role="open_access" number="">open_access</collection>
    <collection role="institutes" number="">Westfälisches Energieinstitut</collection>
    <thesisPublisher>Westfälische Hochschule Gelsenkirchen Bocholt Recklinghausen</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-w-hs/files/4832/Electrodeposition_Boehm.pdf</file>
  </doc>
  <doc>
    <id>4575</id>
    <completedYear>2022</completedYear>
    <publishedYear>2022</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2022-06-26</completedDate>
    <publishedDate>2022-06-26</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Electrodeposition of a Ni-Mo alloy Catalyst with Optimized Mo-Content for Hydrogen Evolution Reaction in AEM-Electrolysis</title>
    <abstract language="eng">Various aqueous citrate electrolyte compositions for the Ni-Mo electrodeposition are explored in order to deposit Ni-Mo alloys with Mo-content ranging from 40 wt% to 65 wt% to find an alloy composition with superior catalytic activity towards the hydrogen evolution reaction (HER). The depositions were performed on copper substrates mounted onto a rotating disc electrode (RDE) and were investigated via scanning electron microscopy (SEM), X-ray fluorescence (XRF) and X-ray diffraction (XRD) methods as well as linear sweep voltammetry (LSV) and impedance spectroscopy. Kinetic parameters were calculated via Tafel analysis. Partial deposition current densities and current efficiencies were determined by correlating XRF measurements with gravimetric results. The variation of the electrolyte composition and deposition parameters enabled the deposition of alloys with Mo-content over the range of 40-65 wt%. An increase in Mo-content in deposited alloys was recorded with an increase in rotation speed of the RDE. Current efficiency of the deposition was in the magnitude of &lt;1%, which is characteristic for the deposition of alloys with high Mo-content. The calculated kinetic parameters were used to determine the Mo-content with the highest catalytic activity for use in the HER.</abstract>
    <parentTitle language="eng">WHEC-2022, 23rd World Hydrogen Energy Conference</parentTitle>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <licence>© Alle Rechte vorbehalten</licence>
    <author>Leonard Böhm</author>
    <author>Klaus Thielker</author>
    <author>Norbert Kazamer</author>
    <author>Florian Josef Wirkert</author>
    <author>Gabriela Marginean</author>
    <author>Ulrich Rost</author>
    <author>Ulf-Peter Apfel</author>
    <author>Michael Brodmann</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Electrodeposition</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Ni-Mo alloy Catalyst</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>AEM-Electrolysis</value>
    </subject>
    <collection role="institutes" number="">Westfälisches Energieinstitut</collection>
    <thesisPublisher>Westfälische Hochschule Gelsenkirchen Bocholt Recklinghausen</thesisPublisher>
  </doc>
  <doc>
    <id>3951</id>
    <completedYear>2020</completedYear>
    <publishedYear>2020</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2021-08-03</completedDate>
    <publishedDate>2020-10-09</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Pulsed electrodeposition of iridium catalyst  nanoparticles on  titanium suboxide supports for application in PEM electrolysis</title>
    <parentTitle language="deu">Konferenz: "8th International Conference on Advanced Materials and Structures - AMS 2020", 7.-9. Oktober 2020 in Timișoara (Rumänien)</parentTitle>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <licence>© Alle Rechte vorbehalten</licence>
    <author>Leonard Böhm</author>
    <author>Norbert Kazamer</author>
    <author>Lisa Holtkotte</author>
    <author>Johannes Näther</author>
    <author>Ulrich Rost</author>
    <author>Martin Underberg</author>
    <author>Gabriela Marginean</author>
    <author>Tim Hülser</author>
    <author>Michael Brodmann</author>
    <author>Frank Köster</author>
    <collection role="institutes" number="">Westfälisches Energieinstitut</collection>
    <thesisPublisher>Westfälische Hochschule Gelsenkirchen Bocholt Recklinghausen</thesisPublisher>
  </doc>
</export-example>
