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Back cover: Mn 2+ or Mn 3+ ? Investigating transition metal dissolution of manganese species in lithium ion battery electrolytes by capillary electrophoresis
Author(s) -
Hanf Lenard,
Henschel Jonas,
Diehl Marcel,
Winter Martin,
Nowak Sascha
Publication year - 2020
Publication title -
electrophoresis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.666
H-Index - 158
eISSN - 1522-2683
pISSN - 0173-0835
DOI - 10.1002/elps.202070042
Subject(s) - manganese , electrolyte , dissolution , lithium (medication) , capillary electrophoresis , inorganic chemistry , chemistry , cathode , electropherogram , battery (electricity) , cover (algebra) , ion , transition metal , metal , alkali metal , analytical chemistry (journal) , electrode , chromatography , physics , medicine , power (physics) , biochemistry , quantum mechanics , endocrinology , catalysis , mechanical engineering , organic chemistry , engineering
DOI: 10.1002/elps.201900443 The cover picture shows the main subject of this study: the investigation of dissolved Mn 2+ and Mn 3+ in lithium ion battery (LIB) electrolytes by means of capillary electrophoresis. In the top left of the cover picture, a LIB with low remaining capacity as a result of ongoing capacity loss is shown. The blue magnifying glass illustrates that more investigations are necessary to understand the capacity loss more detailed. The capacity loss is strongly linked to manganese dissolution from manganese oxide‐based cathodes (top right of the cover picture). However, the oxidation state of dissolved manganese in electrolytes was still unclear, underlined by the question mark behind the Mn 2+ and Mn 3+ . The electropherogram at the bottom of the cover picture, as a highlight of this work, shows the successfully separation of Mn 3+ and Mn 2+ beneath Cu 2+ using the newly developed CE‐method.