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MM: Fachverband Metall- und Materialphysik

MM 54: Materials for Storage and Conversion of Energy V

MM 54.3: Vortrag

Donnerstag, 21. März 2024, 10:45–11:00, C 264

Electrodeposited manganese dioxide nanolayer on carbon cloth as a modified anode for improved zinc-based battery performance — •Dharani Madhavi Bundhooa, Jiajia Qiu, Huaping Zhao, and Yong Lei — Fachgebiet Angewandte Nanophysik, Institut für Physik & IMN MacroNano, Technische Universität Ilmenau, 98693 Ilmenau, Germany

Zinc-based batteries are gaining prominence as a compelling alternative to lithium-ion batteries (LIBs), driven by their safety and environmentally friendly characteristics. However, challenges associated with Zn metal anodes, particularly the formation of Zn dendrites leading to a shortened cycle life, pose obstacles to their widespread adoption. A crucial aspect in reducing dendritic deposition of Zn involves adjusting the initial uniform nucleation, which guides subsequent uniform Zn deposition. To achieve this, a nanolayer of manganese dioxide is electrodeposited onto the surface of carbon cloth, serving as active sites for controlled nucleation and growth of metal Zn. This modified anode exhibits stable cycling performance throughout repeated Zn deposition/stripping cycles. Moreover, upon assembly into full cells enhanced electrochemical performance was obtained.

Keywords: zinc-based batteries; zinc dendrites; modified anode; electrodeposition