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Liquid‐Free Lithium–Oxygen Batteries
Author(s) -
Balaish Moran,
Peled Emanuel,
Golodnitsky Diana,
EinEli Yair
Publication year - 2015
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201408008
Subject(s) - electrolyte , lithium (medication) , battery (electricity) , aqueous solution , ethylene glycol , materials science , polymer , conductivity , chemical engineering , oxygen , chemistry , electrode , organic chemistry , power (physics) , medicine , physics , quantum mechanics , engineering , composite material , endocrinology
Non‐aqueous lithium–oxygen batteries are considered as most advanced power sources, albeit they are facing numerous challenges concerning almost each cell component. Herein, we diverge from the conventional and traditional liquid‐based non‐aqueous Li–O 2 batteries to a Li–O 2 system based on a solid polymer electrolyte (SPE‐) and operated at a temperature higher than the melting point of the polymer electrolyte, where useful and most applicable conductivity values are easily achieved. The proposed SPE‐based Li‐O 2 cell is compared to Li–O 2 cells based on ethylene glycol dimethyl ether (glyme) through potentiodynamic and galvanostatic studies, showing a higher cell discharge voltage by 80 mV and most significantly, a charge voltage lower by 400 mV. The solid‐state battery demonstrated a comparable discharge‐specific capacity to glyme‐based Li–O 2 cells when discharged at the same current density. The results shown here demonstrate that the safer PEO‐based Li–O 2 battery is highly advantageous and can potentially replace the contingent of liquid‐based cells upon further investigation.