1151. |
1152. |
1153. |
1154. |
1155. |
1156. |
1157. |
1158. |
1159. Formation and discharge of Zn aponge anodes, followed by synchrotron hard X-ray ImagingBenedetto Bozzini, Nicola Sandini, Alexander Peter Kao, Alessio Veneziano, Lucia Mancini, 2025, izvirni znanstveni članek Povzetek: The fabrication of engineered Zn anodes often relies on different forms of ZnO as the material in direct contact with the alkaline aqueous electrolyte in the pristine assembled cell state. Of course, in this case, the as-assembled cell is in the discharged state and requires an initial charging step, or “formation”, to generate active metallic Zn. The formation of ZnO-based anodes is a complex process the control of which calls for an in-depth understanding of electrochemical phase growth. In fact, formation gives rise to morphochemical imprinting, profoundly impacting the electrode functional performance. The present work contributes to the understanding of the formation of Zn sponge electrodes, combining electrochemistry and synchrotron-based X-ray imaging. Specifically, we employed dynamic in operando radiography to select the potentiostatic formation conditions that exclude hydrogen-induced damaging of the sponge structure. Subsequently, formation and the subsequent first discharge are followed by time-lapse in situ tomography, allowing to track the early structural evolution of the sponge electrode and the Zn/ZnO phase distribution.
Ključne besede: zinc anode, zinc battery, zinc sponge, X-ray microtomography, synchrotron radiation, in situ, in operando
Objavljeno v DiRROS: 11.09.2025; Ogledov: 290; Prenosov: 135
 Celotno besedilo (9,30 MB)
Gradivo ima več datotek! Več... |
1160. Scale-up of zinc-air battery electrodes enhanced by 3D X-ray imagingBenedetto Bozzini, Alessandro Alleva, Elisa Emanuele, Sheraz Gul, Tianzhu Qin, Wenbing Yun, Lucia Mancini, 2025, izvirni znanstveni članek Povzetek: The scale-up of successful laboratory-scale zinc-air battery (ZAB) components is a stumbling block towards commercialization of this sustainable, cheap and safe technology. In this work, we consider electrode nanofabrication solutions that have been proved capable of overcoming durability criticalities at laboratory scale, but can miss their goal upon increasing electrode dimensions, owing to hard-to-discern electrode architecture issues. This contribution shows how X-ray computed microtomography can drive R&D of battery components.
Ključne besede: zinc-air battery, nanostructured electrode, GDE, porous electrode, MnO2
Objavljeno v DiRROS: 11.09.2025; Ogledov: 345; Prenosov: 198
Celotno besedilo (880,76 KB)
Gradivo ima več datotek! Več... |
