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Back cover: Investigating the oxidation state of Fe from LiFePO 4 ‐based lithium ion battery cathodes via capillary electrophoresis (elps.202000097) and Accessing copper oxidation states of dissolved negative electrode current collectors in lithium ion batteries (elps.202000155)
Author(s) -
Hanf Lenard,
Diehl Marcel,
Kemper LeaSophie,
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.202070102
Subject(s) - dissolution , copper , electrolyte , cathode , electrode , lithium (medication) , capillary electrophoresis , battery (electricity) , transition metal , inorganic chemistry , oxidation state , metal , chemistry , materials science , metallurgy , chromatography , catalysis , organic chemistry , physics , quantum mechanics , endocrinology , medicine , power (physics)
DOI: 10.1002/elps.202000097 and 10.1002/elps.202000155 The back cover picture shows the dissolution of iron from the LiFePO 4 ‐based positive electrode and copper from the current collector of the negative electrode into a lithium ion battery (LIB) electrolyte (center of picture). The transition‐metal dissolution plays a fundamental role in the progressive loss of capacity of the LIBs. Therefore, knowledge of the dissolved transition‐metal species is the key to understanding the dissolution mechanisms, as well as the capacity loss. However, dissolved iron and copper species in LIBs have not yet been investigated. Therefore, novel CE methods were developed to investigate Fe 2+ /Fe 3+ and Cu + /Cu 2+ in LIB electrolytes (electropherograms at the top and bottom). [The cover was updated October 22, 2020, after publication of the issue.]