SKM 2023 – wissenschaftliches Programm

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KFM: Fachverband Kristalline Festkörper und deren Mikrostruktur

KFM 6: Poster

KFM 6.7: Poster

Dienstag, 28. März 2023, 17:00–19:00, P3

Direct growth of iron-based compounds as anodes for potassium ion storage — •Zidong Wang, Huaping Zhao, and Yong Lei — Fachgebiet Angewandte Nanophysik, Institut für Physik & IMN MacroNano, Technische Universität Ilmenau, 98693 Ilmenau, Germany

Potassium-ion electrochemical energy storage technologies have received much attention in recent years as an alternative to lithium-based energy storage technologies. Iron-based compounds, as a typical transition metal compound, have attracted much attention because of their low cost and high capacity as an anode of batteries. However, poor electrical conductivity and structural instability, which are common in transition metal compounds, hinder their further application in potassium-based energy storage technologies. In this work, the conductivity of electrodes was improved by a strategy of growing iron-based compounds directly on carbon papers, eliminating the binding agent in conventional preparation methods. Also, the directly grown active material can effectively reduce agglomeration during charging and discharging, thus enhancing the stability. The results show that this direct growth strategy can effectively improve the electrochemical potassium ion storage performance of iron-based compounds as a promising high-performance anode.