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| Hauptseite > Publikationsdatenbank > NMR Spectroscopy for Electrolysis Applications: An Overview |
| Hauptseite > Publikationsdatenbank > NMR Spectroscopy for Electrolysis Applications: An Overview |
| Conference Presentation (After Call) | FZJ-2026-05288 |
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2026
Abstract: NMR techniques are established and versatile analytical methods in many scientific fields, such as organic and material chemistry or medical diagnostics. In electrochemistry however, application of NMR spectroscopy has been restrictive due to challenges caused by the interactions of the involved magnetic fields and conductive components inherent to materials and reactions in this field. Nonetheless, battery and electrolysis research significantly benefits from insights granted by magnetic resonance techniques, and thus developments have been spearheaded by several NMR research groups either obviating these challenges, minimizing their impact, or even exploiting them for benefit. This work outlines some of our efforts to establish NMR spectroscopy for the investigation of in particular electrolysis reactions and materials, granting novel and unique insights. Here, ex situ NMR is utilized for the study of ionomer materials. Firstly, NMR was utilized not as a standalone method, but instead offers correlated insights into the evaluation of accelerated proton exchange membrane degradation testing protocols by revealing shortcomings compared to the actual deterioration of proton exchange membranes in electrolyzer operation [1]. While NMR investigation accelerated PEM degradation tests have been conducted previously, this work highlights the merits of supporting magnetic resonance techniques with cross-scale analytics by constructing a mechanistic picture with combined chemical and structural degradation pathways. Secondly, benchtop NMR techniques are highlighted as a valuable tool for ionomer analysis in an industrial setting [2]. While detailed analysis of changes in ionomer chemistry is only feasible by MAS high-field NMR, a structure-property relationship can be constructed utilizing PFG NMR methods available at benchtop class spectrometers. Finally, first insights into a novel technique combining NMR, numerical calculations and simulation are presented [3]. This novel approach exploits magnetic field distortions induced by metallic electrodes, enabling B0 and B1 sensitive NMR investigations aimed at electrode surfaces or volumes enclosed by battery electrodes.Literature:[1] R. Rameker et al., Journal of Materials Chemistry A, 14, (2026), https://doi.org/10.1039/d6ta01360k.[2] R. Rameker et al., Electrochemical Science Advances, 6 (2023), https://doi.org/10.1002/elsa.70025. [3] J. F. Kochs, A. Römer et al., Magnetic Resonance, 7 (2026), https://doi.org/10.5194/mr-7-113-2026.
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