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Molecular Relaxations in Magnesium Polymer Electrolytes via GHz Broadband Electrical Spectroscopy
Author(s) -
Piccolo Michele,
Giffin Guinevere A.,
Vezzù Keti,
Bertasi Federico,
Alotto Piergiorgio,
Guarnieri Massimo,
Di Noto Vito
Publication year - 2013
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201300145
Subject(s) - electrolyte , magnesium , polymer , polyethylene glycol , materials science , dielectric spectroscopy , spectroscopy , chemical engineering , chemistry , inorganic chemistry , electrochemistry , electrode , organic chemistry , physics , quantum mechanics , engineering , metallurgy , composite material
GHz broadband electrical spectroscopy (G‐BES) is adopted to investigate the molecular relaxations and interactions occurring within the system in an oxygen‐ and water‐free atmosphere in the 300 kHz–20 GHz and −40 to 250 °C frequency and temperature ranges, respectively. A new electrolyte for magnesium secondary batteries that can transfer magnesium ions efficiently is presented. This electrolyte is based on polyethylene glycol 400 and a polymeric form of δ‐MgCl 2 . The information obtained by G‐BES is crucial for studying the conduction mechanism of these new electrolytes.