%0 Journal Article
%T Interface Properties between Lithium Metal and a Composite Polymer Electrolyte of PEO18Li(CF3SO2)2N-Tetraethylene Glycol Dimethyl Ether
%A Hui Wang
%A Masaki Matsui
%A Yasuo Takeda
%A Osamu Yamamoto
%A Dongmin Im
%A Dongjoon Lee
%A Nobuyuki Imanishi
%J Membranes
%D 2013
%I MDPI AG
%R 10.3390/membranes3040298
%X The electrochemical properties of a composite solid polymer electrolyte, consisting of poly(ethylene oxide) (PEO)-lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) and tetraethylene glycol dimethyl ether (TEGDME) was examined as a protective layer between lithium metal and a water-stable lithium ion-conducting glass ceramic of Li 1 +x+y(Ti,Ge) 2£¿xAl xP 3£¿ySi yO 12 (LTAP). The lithium ion conductivity and salt diffusion coefficient of PEO 18LiTFSI were dramatically enhanced by the addition of TEGDME. The water-stable lithium electrode with PEO 18LiTFSI-2TEGDME, as the protective layer, exhibited a low and stable electrode resistance of 85 ¦¸¡¤cm 2 at 60 ¡ãC, after 28 days, and low overpotentials of 0.3 V for lithium plating and 0.4 V for lithium stripping at 4.0 mA¡¤cm £¿2 and 60 ¡ãC. A Li/PEO 18LiTFSI-2TEGDME/LTAP/saturated LiCl aqueous solution/Pt, air cell showed excellent cyclability up to 100 cycles at 2.0 mAh¡¤cm £¿2.
%K composite solid polymer electrolyte
%K tetraethylene glycol dimethyl ether
%K water-stable lithium electrode
%K lithium dendrite
%K aqueous lithium-air battery
%U http://www.mdpi.com/2077-0375/3/4/298