TY - JOUR
AU - Shuai Heng
AU - Yan Wang
AU - Qunting Qu
AU - Ruitian Guo
AU - Xiaojian Shan
AU - Vincent S Battaglia
AU - Gao Liu
AU - Honghe Zheng
AB - <p><span>In this paper, 1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropyl ether (TTE) is adopted as a bifunctional electrolyte additive, which is identified to effectively stabilize the surface for both graphite anode and LiNi</span><span>0.5</span><span>Co</span><span>0.2</span><span>Mn</span><span>0.3</span><span>O</span><span>2</span><span>&nbsp;(NCM523) cathode within the graphite/NCM523 full cell. The overall electrochemical performances of the full cell are significantly enhanced with 3 wt % TTE additive in a conventional organic electrolyte. A combination of studies of scanning electronic microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared (FTIR) spectroscopy show that a uniform, compact, and stable solid electrolyte interphase (SEI) with improved mechanics on the graphite anode and an effective cathode electrolyte interphase (CEI) on the NCM523 cathode is developed. The electron-withdrawing C–F group contributes to the stable and compact surface film, which explains the electrochemical enhancement of the NCM523/graphite full cell.</span></p>
BT - ACS Applied Energy Materials
DA - 08/2019
DO - 10.1021/acsaem.9b00972
IS - 9
LA - eng
N2 - <p><span>In this paper, 1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropyl ether (TTE) is adopted as a bifunctional electrolyte additive, which is identified to effectively stabilize the surface for both graphite anode and LiNi</span><span>0.5</span><span>Co</span><span>0.2</span><span>Mn</span><span>0.3</span><span>O</span><span>2</span><span>&nbsp;(NCM523) cathode within the graphite/NCM523 full cell. The overall electrochemical performances of the full cell are significantly enhanced with 3 wt % TTE additive in a conventional organic electrolyte. A combination of studies of scanning electronic microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared (FTIR) spectroscopy show that a uniform, compact, and stable solid electrolyte interphase (SEI) with improved mechanics on the graphite anode and an effective cathode electrolyte interphase (CEI) on the NCM523 cathode is developed. The electron-withdrawing C–F group contributes to the stable and compact surface film, which explains the electrochemical enhancement of the NCM523/graphite full cell.</span></p>
PY - 2019
SP - 6404 
EP -  6416
ST - ACS Appl. Energy Mater.
T2 - ACS Applied Energy Materials
TI - Fluoro-Ether as a Bifunctional Interphase Electrolyte Additive with Graphite/LiNi<sub>0.5</sub>Co <sub>0.2</sub>Mn<sub>0.3</sub>O<sub>2</sub> Full Cell
VL - 2
SN - 2574-0962
ER -