title: Interface Properties between Lithium Metal and a Composite Polymer Electrolyte of PEO18Li(CF3SO2)2N-Tetraethylene Glycol Dimethyl Ether.
abstract: 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 Li1+x+y(Ti,Ge)2-xAlxP3-ySiyO12 (LTAP). The lithium ion conductivity and salt diffusion coefficient of PEO18LiTFSI were dramatically enhanced by the addition of TEGDME. The water-stable lithium electrode with PEO18LiTFSI-2TEGDME, as the protective layer, exhibited a low and stable electrode resistance of 85 Ω·cm2 at 60 °C, 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 °C. A Li/PEO18LiTFSI-2TEGDME/LTAP/saturated LiCl aqueous solution/Pt, air cell showed excellent cyclability up to 100 cycles at 2.0 mAh·cm-2.
authors: Graduate School of Engineering, Mie University, Tsu, Mie 514-8507, Japan. 411db02@m.mie-u.ac.jp.
authors: Hui
authors: H
authors: Wang
authors: Graduate School of Engineering, Mie University, Tsu, Mie 514-8507, Japan. matsui@chem.mie-u.ac.jp.
authors: Masaki
authors: M
authors: Matsui
authors: Graduate School of Engineering, Mie University, Tsu, Mie 514-8507, Japan. takeda@chem.mie-u.ac.jp.
authors: Yasuo
authors: Y
authors: Takeda
authors: Graduate School of Engineering, Mie University, Tsu, Mie 514-8507, Japan. yamamoto@chem.mie-u.ac.jp.
authors: Osamu
authors: O
authors: Yamamoto
authors: Samsung Advanced Institute of Technology, Samsung Electronics, Yongin 446-712, Korea. dongmin.im@samsung.com.
authors: Dongmin
authors: D
authors: Im
authors: Samsung Advanced Institute of Technology, Samsung Electronics, Yongin 446-712, Korea. dongjoon.lee@samsung.com.
authors: Dongjoon
authors: D
authors: Lee
authors: Graduate School of Engineering, Mie University, Tsu, Mie 514-8507, Japan. imanishi@chem.mie-u.ac.jp.
authors: Nobuyuki
authors: N
authors: Imanishi