Greifswald 2024 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
SYEC: Symposium Lasers and Photonic Technologies for Environmental Challenges
SYEC 3: Photonics-Assisted Green Energy Production I
SYEC 3.1: Vortrag
Dienstag, 27. Februar 2024, 15:30–15:45, ELP 6: HS 4
Upconversion Nanoparticles Towards Sensing in Hydrogen Electrolysis Cells — •Rajesh Komban1, Simon Spelthann2, Lea Kötters2, Michael Steinke2,3, and Christoph Gimmler1 — 1Fraunhofer Center for Applied Nanotechnology CAN, D-20146 Hamburg, Germany — 2Institute of Quantum Optics, Leibniz University Hannover, D-30167 Hannover, Germany — 3QUEST-Leibniz-Research School, Leibniz University Hannover, D-30167 Hannover, Germany
With its potential to address environmental concerns and energy security, hydrogen is gaining prominence in various energy sectors. In this scenario, the proton exchange membrane (PEM) electrolysis cell emerges as a significant tool for generating green hydrogen from water. The temperature inside these cells is crucial, as it directly correlates with their efficiency. To monitor the temperature in situ, a specialized technique needs to be developed.
The utilization of luminescent intensity ratio-based thermometry coupled with a fiber sensor would be an optimal choice for such an application. As lanthanide ions excited energy levels enable such correlation, we develop lanthanide doped green emitting upconversion nanoparticles (UCNP) for this purpose. Highly efficient submicron range NaYF4:Er3+,Yb3+ UCNP core particles are developed and further modified their surface with silicon dioxide shell to enable them to stick on surface of the fiber. We assume that these functionalized UCNP can be used in different fiber based temperature sensors not only in PEM cells, but also in battery technology.
Keywords: Upconversion Nanomaterials; Synthesis; Core-Shell; Nanothermometry; Green Hydrogen