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Manganese dissolution and electrochemistry of alternative electrolytes
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.
(English)Manuscript (preprint) (Other academic)
Abstract [en]

1M lithium tetrafluoroborate (LiBF4) in propylene carbonate (PC) is here presented as an electrolyte alternative to 1M lithium hexafluorophosphate (LiPF6) in ethylene:diethylcarbonate (EC:DEC) for use in lithium titanate (Li4Ti5O12, LTO) based cell chemistry. Manganese dissolution was found to depend on the presence of LiPF6 through dissolution studies with inductive coupled plasma – atomic emission spectroscopy (ICP-AES). 1M LiBF4 in PC was used as an electrolyte for LTO|litium manganese oxide (LiMn2O4) cells and initial cell cycling looks promising and preliminary measurements with x-ray photoelectron spectroscopy show a more homogeneous and stable solid electrolyte interphase (SEI) than observed for the traditional EC:DEC 1M LiPF6 electrolyte.

National Category
Materials Chemistry
Research subject
Chemistry with specialization in Materials Chemistry
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URN: urn:nbn:se:uu:diva-331119OAI: oai:DiVA.org:uu-331119DiVA: diva2:1148401
Available from: 2017-10-10 Created: 2017-10-10 Last updated: 2017-10-10

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Nordh, TimYounesi, RezaBrandell, DanielEdström, Kristina
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