Inhaltspezifische Aktionen

März

Bild des Monats März 2026

Microscopic Festival

While charging a battery sodium-ions (blue circles) travel from the negative electrode (anode) to the positive electrode (cathode). Both electrodes are made of particle-based composites, that allow for optimal wettability by the liquid electrolyte through which the path of the sodium-ions leads. For size comparison a 20 µm-scale bar was inserted in the lower left corner. Here, time-of-flight secondary ion mass spectrometry images are shown of polished cross sections of the electrodes of which on the right side only the sodium-ion signal (Na+) is shown in cyan. On the positive left side, though, additionally to Na+ in cyan, phosphate (PO2+) in magenta and vanadium oxide (VO+) in yellow are resembling the composition of the cathode active material (CAM) Na3V2(PO4)3. The sprinkled distribution raises the feeling of a carnival-atmosphere.

Dieses Bild wurde eingereicht von David Schäfer (AG Prof. Dr. Jürgen Janek).

Weitere Einblicke in die Arbeiten der am ZfM beteiligten Arbeitsgruppen finden sie in der Galerie der Bilder des Monats.