Regensburg 2025 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

KFM: Fachverband Kristalline Festkörper und deren Mikrostruktur

KFM 13: Holistic Structural and Safety Assessment of Lithium-ion and Post-Lithium Cells and their Materials (Experimental Characterisation and Safety Testing)

KFM 13.6: Vortrag

Mittwoch, 19. März 2025, 16:15–16:30, H9

synergizing nickel (II) oxide-based catalyst for sodium-carbon dioxide battery — •Tzu-Chin Huang, Changfan Xu, Huaping Zhao, and Yong Lei — Fachgebiet Angewandte Nanophysik, Institut für Physik & IMN MacroNano, Technische Universität Ilmenau, 98693 Ilmenau, Germany

Na-CO2 battery is a novel and environmentally friendly green energy device. Conceptually, it demonstrates excellent capabilities. However, during the operation of batteries, undecomposed discharge products, sodium carbonate, accumulate continuously, which is highly insulating, thermodynamically stable, and difficult to decompose. This increases the ohmic resistance within the battery, resulting in high charging potential and excessive polarization, which leads to serious side reactions, such as the decomposition of the electrolyte and cathode material, reducing the battery's reversibility. Herein three Ni oxide-based catalysts, NiO, NiCoO, and CuNiCoO, attached to carbon clothe cathode were synthesized and employed in Na-CO2 batteries. Electrochemical testing demonstrated that CuNiCoO exhibits the best battery stability and long-term performance. This superior performance is driven by the ability of CuNiCoO catalyst to effectively promote the generation and decomposition of discharge products. Cyclic voltammetry (CV) analysis revealed strong redox peaks, underscoring the outstanding catalytic activity of CuNiCoO catalyst. Furthermore, XRD and Raman characterizations confirmed this by showing the appearance and gradual disappearance of sodium carbonate peaks during charge and discharge cycles, indicating remarkable reversibility.

Keywords: CO2 batteries; Transition metal oxides; Catalyst; CO2 conversion; CO2 Cathode modification