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  A Kinetically Superior Rechargeable Zinc-Air Battery Derived from Efficient Electroseparation of Zinc, Lead, and Copper in Concentrated Solutions

Chen, P., Wang, X., Li, D., Pietsch, T., & Ruck, M. (2022). A Kinetically Superior Rechargeable Zinc-Air Battery Derived from Efficient Electroseparation of Zinc, Lead, and Copper in Concentrated Solutions. ChemSusChem, e202200039, pp. 1-13. doi:10.1002/cssc.202200039.

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 Creators:
Chen, Peng1, Author
Wang, Xia1, Author
Li, Dongqi1, Author
Pietsch, Tobias1, Author
Ruck, Michael2, Author              
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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 Abstract: Zinc electrodeposition is currently a hot topic because of its widespread use in rechargeable zinc-air batteries. However, Zn deposition has received little attention in organic solvents with much higher ionic conductivity and current efficiency. In this study, a Zn-betaine complex is synthesized by using ZnO and betainium bis[(trifluoromethyl)sulfonyl]imide and its electrochemical behavior for six organic solvents and electrodeposited morphology are studied. Acetonitrile allowed dendrite-free Zn electrodeposition at room temperature with current efficiencies of up to 86 %. From acetonitrile solutions in which Zn, Pb, and Cu complexes are dissolved in high concentrations, Zn and Pb/Cu are efficiently separated electrolytically under potentiostatic control, allowing the purification of solutions prepared directly from natural ores. Additionally, a highly flexible Zn anode with excellent kinetics is obtained by using a carbon fabric substrate. A rechargeable zinc-air battery with these electrodes shows an open-circuit voltage of 1.63 V, is stable for at least 75 cycles at 0.5 mA cm(-2) or 33 cycles at 20 mA cm(-2), and allows intermediate cycling at 100 mA cm(-2).

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Language(s): eng - English
 Dates: 2022-03-182022-03-18
 Publication Status: Published in print
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 Table of Contents: -
 Rev. Type: -
 Identifiers: ISI: 000783824300001
DOI: 10.1002/cssc.202200039
 Degree: -

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Title: ChemSusChem
Source Genre: Journal
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Publ. Info: Weinheim : Wiley-VCH
Pages: - Volume / Issue: - Sequence Number: e202200039 Start / End Page: 1 - 13 Identifier: ISSN: 1864-5631
CoNE: https://pure.mpg.de/cone/journals/resource/1864-5631