High stable Li-air battery cells by using \PEO\ and \PVDF\ additives in the TEGDME/LiPF6 electrolytes
By A. Akbulut Uluda? and M. Tokur and H. Algul and T. Cetinkaya and M. Uysal and H. Akbulut
Published in International Journal of Hydrogen Energy
2016
Abstract
An ether based electrolyte containing TEGDME/LiPF6 was optimized, which possessed low viscosity and high ionic conductivity, under dry argon atmosphere in a glove box. In order to prevent air breathing cathode clogging by lithium oxide and provide stability of Li metal anode, different types in varying quantities of polymeric additives such as \PEO\ and \PVDF\ were added into TEGDME/LiPF6. These additives are thought to promote the dissolution of lithium peroxide precipitates formed in course of discharge process and protect the anode. Graphene/?-MnO2 nanocomposite air breathing structure coated on nickel mesh was used as cathode. A lithium disk was used as anode while glass fiber was used as the separator in ECC-Air test cells. The cells were cyclically tested using 0.1