Investigating the impact of particle size on the performance and internal resistance of aqueous zinc ion batteries with a manganese sesquioxide cathode
| Autor: | Oliver Fitz, Hans-Martin Henning, Harald Gentischer, Daniel Biro, Christian Schiller, Christian Bischoff |
|---|---|
| Přispěvatelé: | Publica |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Battery (electricity)
Materials science Energiesystemanalyse rechargeable aqueous zinc-ion battery aqueous electrolyte Energy Engineering and Power Technology chemistry.chemical_element 02 engineering and technology Zinc stationary energy storage Internal resistance 010402 general chemistry 01 natural sciences law.invention Sesquioxide law lcsh:TK1001-1841 Electrochemistry Electrical and Electronic Engineering Energiesystemtechnik ion battery manganese sesquioxide particle size 021001 nanoscience & nanotechnology Cathode internal resistance 0104 chemical sciences Anode Dielectric spectroscopy lcsh:Production of electric energy or power. Powerplants. Central stations lcsh:Industrial electrochemistry Chemical engineering chemistry Particle size 0210 nano-technology lcsh:TP250-261 |
| Zdroj: | Batteries Volume 4 Issue 3 Batteries, Vol 4, Iss 3, p 44 (2018) |
| Popis: | Aqueous zinc ion batteries are considered to be one of the most promising battery types for stationary energy storage applications. Due to their aqueous electrolyte, they are inherently safe concerning flammability and environmentally friendly. In this work, the strong influence of the particle size of manganese sesquioxide on the performance of the battery is investigated. Ball milling was used to decrease the particle diameter. The resulting powders were used as active material for the cathodes, which were assembled in coin cells as full cells together with zinc foil anodes and aqueous electrolyte. It was shown that about one third of the original particle size can nearly triple the initial capacity when charged with constant current and constant end-of-charge voltage. Additionally, smaller particles were found to be responsible for the collapse of capacity at high current densities. By means of electrochemical impedance spectroscopy, it was shown that particle size also has a large impact on the internal resistance. Initially, the internal resistance of the cells with small particles was about half that of those with big particles, but became larger during cycling. This reveals accelerated aging processes when the reactive surface of the active material is increased by smaller particles. |
| Databáze: | OpenAIRE |
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