Premium
Impact of 3‐Cyanopropionic Acid Methyl Ester on the Electrochemical Performance of ZnMn 2 O 4 as Negative Electrode for Li‐Ion Batteries
Author(s) -
Zhao Zijian,
Gehrlein Lydia,
Bothe Annika,
Maibach Julia,
Balducci Andrea,
Dsoke Sonia
Publication year - 2021
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.202100247
Subject(s) - electrolyte , electrochemistry , electrode , x ray photoelectron spectroscopy , lithium (medication) , oxide , materials science , inorganic chemistry , salt (chemistry) , chemistry , chemical engineering , organic chemistry , medicine , engineering , endocrinology
Due to their high theoretical capacity, transition metal oxide compounds are promising electrode materials for lithium‐ion batteries. However, one drawback is associated with relevant capacity fluctuations during cycling, widely observed in the literature. Such strong capacity variation can result in practical problems when positive and negative electrode materials have to be matched in a full cell. Herein, the study of ZnMn 2 O 4 (ZMO) in a nonconventional electrolyte based on 3‐cyanopropionic acid methyl ester (CPAME) solvent and LiPF 6 salt is reported for the first time. Although ZMO in LiPF 6 /CPAME electrolyte displays a dramatic capacity decay during the first cycles, it shows promising cycling ability and a suppressed capacity fluctuation when vinylene carbonate (VC) is used as an additive to the CPAME‐based electrolyte. To understand the nature of the solid electrolyte interphase (SEI), the electrochemical study is correlated to ex situ X‐ray photoelectron spectroscopy (XPS).