Dresden 2026 – scientific programme

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FM: Fachverband Funktionsmaterialien

FM 5: Focus Session: Holistic structural and safety assessment of battery materials and cells

FM 5.9: Talk

Monday, March 9, 2026, 17:15–17:30, BEY/0E40

Bismuth telluride (Bi2Te3) incorporated on 3D-printed carbon electrode for rechargeable aqueous ammonium-ion battery — •Sunny Nandi¹ and Martin Pumera² — ¹NTC, University of West Bohemia in Pilsen, Pilsen, Czech Republic — ²NTC, University of West Bohemia in Pilsen, Pilsen, Czech Republic

Lithium-ion batteries are leading the battery market but there are ever growing concerns over the sustainability of Li-based batteries due to paucity and escalating cost of Li-resources. Therefore, it become increasingly important to develop a low cost and easily processable novel energy storage technologies in the future. Hence, ammonium-ion battery based on aqueous electrolyte hold great potential owing to their low cost, high safety and excellent electrochemical characteristics. In an effort to develop such NH4+ ion based rechargeable electrochemical cells. Herein, for the first time, we report here the working of a rechargeable aqueous ammonium (NH4+) ion battery by integrating a topological insulator, bismuth telluride (Bi2Te3), onto a 3D printed nanocarbon electrode as anode and copper hexacyanoferrate (CuHCF) as the cathode. Taking advantage of the 3D porous framework and the non-metallic nature of NH4+ ions, the ammonium-ion cell delivers a high energy density of 134.8 Wh kg*1 and a power density of 1800 W kg-1 in 1 M (NH4)2SO4, outperforming previously reported studies. Furthermore, ex-situ characetrization clearly explain the plausible storage mechanism of NH4+ insertion. We show immense promise of the system by recycling and reusing the used 3D printed nanocarbon electrode for next-generation energy storage systems.

Keywords: 3 D printing; ammonium-ion battery; aqueous electrolyte; Bi2Te3; recycling