SKM 2023 – wissenschaftliches Programm

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KFM: Fachverband Kristalline Festkörper und deren Mikrostruktur

KFM 6: Poster

KFM 6.26: Poster

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

Highly-ordered Ni nanoarrays as an effect current collector for dendrite-free sodium metal batteries — •Mo Sha, Huaping Zhao, and Yong Lei — Fachgebiet Angewandte Nanophysik, Institut für Physik & IMN MacroNano, Technische Universität Ilmenau, 98693 Ilmenau, Germany

Sodium metal batteries (SMBs) are attracting extensive attention for energy storage field due to its intrinsic high theoretical capacity and low redox potential, as well as its low cost and broad sources. Nevertheless, the inevitable side reactions and uncontrollable dendrite growth block its practical application. 3D confinement strategy demonstrates great potential for stabilizing the Na anode owing to its optimized ion/electron transportation, lower deposition overpotential, and structural stability. A technique via anodized alumina oxide (AAO) templates s is an advanced preparation technique to fabricate various 3D nanostructures. Here, a 3D Ni nano-arrays nanostructure was fabricated with highly-ordered structure, which provides a greater specific surface area, reduces local current density and inhibits of Na dendrite formation. Due to the unique 3D nanostructure, dendrite-free Na deposition and superior electrochemical performance improvements in SMBs have been realized.