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Highly active nickel-molybdenum coating as hydrogen electrocatalysts via solution precursor plasma spraying
Umeå University, Faculty of Science and Technology, Department of Physics. (Eduardo Gracia Lab)
Umeå University, Faculty of Science and Technology, Department of Physics. (Eduardo Gracia Lab)
Umeå University, Faculty of Science and Technology, Department of Physics. (Eduardo Gracia Lab)
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(English)Manuscript (preprint) (Other academic)
National Category
Materials Engineering Physical Chemistry
Research subject
nanomaterials
Identifiers
URN: urn:nbn:se:umu:diva-221486OAI: oai:DiVA.org:umu-221486DiVA, id: diva2:1840669
Note

Highly active and durable nickel-molybdenum coatings as hydrogen electrocatalysts via solution precursor plasma spraying

Available from: 2024-02-26 Created: 2024-02-26 Last updated: 2024-02-27
In thesis
1. Plasma spray coatings as catalysts for water splitting: exploring novel materials and strategies
Open this publication in new window or tab >>Plasma spray coatings as catalysts for water splitting: exploring novel materials and strategies
2024 (English)Doctoral thesis, comprehensive summary (Other academic)
Alternative title[sv]
Plasmagenererade katalysbeläggningar för vattenelektrolys : nya material och strategier
Abstract [en]

Today, fossil fuels still play a dominant role in the global energy systems. However, they are depleting quickly and the combustion of them causes many environmental concerns, including global warming, air pollution, ozone layer depletion, and acid rain. In response to these environmental challenges, a transition from fossil fuel energy sources towards sustainable alternatives is urgent and necessary. Unlike traditional fossil fuels, hydrogen serves as an environmentally friendly fuel with exceptional energy density, and its combustion generates no greenhouse gases. Moreover, hydrogen holds the versatility to be produced, stored, and utilized by various sectors, including transportation, industry, and electricity generation. Electrolyzer technology offers a sustainable pathway for clean hydrogen production when using electricity generated from renewable sources such as solar and wind power. The integration of hydrogen into energy systems holds significant potential for a decarbonized and sustainable future.

In this thesis, we focused on creating affordable coatings using earth-abundant transition metals and explored their application as electrocatalysts for hydrogen and oxygen production in alkaline and acidic environments. We developed novel synthetic routes and new materials, we studied their intricate structure and composition, and we were able to fine-tune their catalytic activity and durability. Our findings demonstrated that plasma spray technology offers a scalable approach for producing highly active catalysts, while also developing coatings that can tolerate acidic environments and extend the lifetime of the state-of-the-art oxygen evolution catalysts. Furthermore, we tested and discussed alternative materials aiming to offer cost-effective substitutes for expensive Pt-based electrocatalysts for hydrogen production.

Place, publisher, year, edition, pages
Umeå: Umeå University, 2024. p. 66
Keywords
Plasma spray, water splitting, coatings, electrocatalyst, hydrogen evolution reaction, oxygen evolution reaction
National Category
Physical Chemistry Energy Systems
Research subject
Physical Chemistry
Identifiers
urn:nbn:se:umu:diva-221502 (URN)9789180703086 (ISBN)9789180703093 (ISBN)
Public defence
2024-03-27, NAT.D.440, Naturvetarhuset, 13:00 (English)
Opponent
Supervisors
Available from: 2024-03-06 Created: 2024-02-26 Last updated: 2024-03-06Bibliographically approved

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Wu, XiuyuRafei, MounaKuzhikandathil Mohamed, AliceGracia-Espino, Eduardo

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CiteExportLink to record
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Citation style
  • apa
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