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  Ionometallurgical Step-Electrodeposition of Zinc and Lead and its Application in a Cycling-Stable High-Voltage Zinc-Graphite Battery

Chen, P., Richter, J., Wang, G., Li, D., Pietsch, T., & Ruck, M. (2021). Ionometallurgical Step-Electrodeposition of Zinc and Lead and its Application in a Cycling-Stable High-Voltage Zinc-Graphite Battery. Small, (17): 2102058, pp. 1-13. doi:10.1002/smll.202102058.

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 Urheber:
Chen, Peng1, Autor
Richter, Janine1, Autor
Wang, Gang1, Autor
Li, Dongqi1, Autor
Pietsch, Tobias1, Autor
Ruck, Michael2, Autor           
Affiliations:
1External Organizations, ou_persistent22              
2Michael Ruck, Max Planck Fellow, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863444              

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Schlagwörter: high-voltage zinc-graphite batteries, ionometallurgy, step-electrodeposition, task-specific ionic liquids, zinc electrodeposition from ZnO, Electrodes, Graphite, II-VI semiconductors, Ionic liquids, Lead oxide, Magnesia, Ores, Oxide minerals, Secondary batteries, Temperature, Zinc oxide, Co-electrodeposition, Deep eutectic solvents, Deposited materials, Low temperature conversions, Naturally occurring, Potentiostatic control, Potentiostatic electrodeposition, Reduction potential, Electrodeposition
 Zusammenfassung: Ionometallurgy is a new development aiming at the sustainable low-temperature conversion of naturally occurring metal ores and minerals to their metals or valuable chemicals in ionic liquids (ILs) or deep eutectic solvents. The IL betainium bis((trifluoromethyl)sulfonyl)imide, [Hbet][NTf2], is especially suited for this process due to its redox-stability and specific-functionalization. The potentiostatic electrodeposition of zinc and lead starting directly from ZnO and PbO, which dissolve in [Hbet][NTf2] in high concentrations is reported. The initial reduction potentials of zinc(II) and lead(II) are about −1.5 and −1.0 V, respectively. The ionic conductivity of the solution of ZnO in [Hbet][NTf2] is measured and the effect of various temperatures and potentials on the morphology of the deposited material is explored. The IL proves to be stable under the chosen conditions. From IL-solutions, where ZnO, PbO, and MgO have been dissolved, metallic Zn and Pb are deposited under potentiostatic control either consecutively by step-electrodeposition or together in a co-electrodeposition. Using the method, Zn is also deposited on 3D copper foam and assembles into high-voltage zinc-graphite battery. It exhibits a working-voltage up to 2.7 V, an output midpoint discharge-voltage of up to 2.16 V, up to 98.6% capacity-retention after 150 cycles, and good rate performance. © 2021 The Authors. Small published by Wiley-VCH GmbH

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Sprache(n): eng - English
 Datum: 2021-07-292021-07-29
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: DOI: 10.1002/smll.202102058
 Art des Abschluß: -

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Titel: Small
  Andere : Small
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Weinheim, Germany : Wiley-VCH
Seiten: - Band / Heft: (17) Artikelnummer: 2102058 Start- / Endseite: 1 - 13 Identifikator: ISSN: 1613-6810
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000017440_1