Publications by authors named "C Eyovge"

Article Synopsis
  • Porous silicon separators were created for alkaline water electrolyzers using lithography, enhancing their efficiency by reducing overpotential.
  • These separators involved a silicon nitride coating for stability, with platinum or nickel layers added to form a zero-gap configuration, optimizing their design by varying pore size and spacing.
  • Findings showed that these separators had resistance similar to commercial products while keeping gas crossover low, and they maintained stable performance over long durations, suggesting potential for future ionomer-free separators in electrolysis applications.
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Photocatalytic H generation by water splitting is a promising alternative for producing renewable fuels. This work synthesized a new type of TaO/SrZrO heterostructure with Ru and Cu (RuO/CuO/TaO/SrZrO) using solid-state chemistry methods to achieve a high H production of 5164 μmol g h under simulated solar light, 39 times higher than that produced using SrZrO. The heterostructure performance is compared with other TaO/SrZrO heterostructure compositions loaded with RuO, CuO, or Pt.

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Co-axial electrospinning was applied for the structuring of non-woven webs of TiO nanofibers loaded with Ag, Au, and CuO nanoparticles. The composite layers were tested in an electrochromic half-cell assembly. A clear correlation between the nanoparticle composition and electrochromic effect in the nanofibrous composite is observed: TiO loaded with Ag reveals a black-brown color, Au shows a dark-blue color, and CuO shows a dark-green color.

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Access to nanofabrication strategies for crafting three-dimensional plasmonic structures is limited. In this work, a fabrication strategy to produce 3D plasmonic hollow nanopillars (HNPs) using Talbot lithography and I-line photolithography is introduced. This method is named subtractive hybrid lithography (SHL), and permits intermixed usage of nano-and-macroscale patterns.

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