TY - JOUR
T1 - High concentration lithium nitrate/dimethylacetamide electrolytes for lithium/oxygen cells
AU - Giordani, Vincent
AU - Uddin, Jasim
AU - Bryantsev, Vyacheslav S.
AU - Chase, Gregory V.
AU - Addison, Dan
N1 - Publisher Copyright:
� 2016 The Electrochemical Society. All rights reserved.
PY - 2016
Y1 - 2016
N2 - A high concentration of lithium nitrate (LiNO3) in dimethylacetamide (DMA) is shown to exert an inhibitory effect on electrolyte degradation processes in a rechargeable Li/O2 battery. Experimental observations are supported by quantum chemical calculations suggesting that resistance of the solvent to autoxidation and hydrogen atom abstraction may improve in proportion to Li salt concentration. Both in situ and ex situ gas analysis data reveal a trend of a reduced rate of electrolyte decomposition at higher concentrations of LiNO3. Additionally, characterization of the surface and interface of both the O2 and Li electrodes, including X-ray photoelectron spectroscopy (XPS), electrochemical impedance spectroscopy (EIS) and X-ray diffraction provide further evidence for improved electrolyte stability at higher Li salt concentration and the mechanistic theory thereof.
AB - A high concentration of lithium nitrate (LiNO3) in dimethylacetamide (DMA) is shown to exert an inhibitory effect on electrolyte degradation processes in a rechargeable Li/O2 battery. Experimental observations are supported by quantum chemical calculations suggesting that resistance of the solvent to autoxidation and hydrogen atom abstraction may improve in proportion to Li salt concentration. Both in situ and ex situ gas analysis data reveal a trend of a reduced rate of electrolyte decomposition at higher concentrations of LiNO3. Additionally, characterization of the surface and interface of both the O2 and Li electrodes, including X-ray photoelectron spectroscopy (XPS), electrochemical impedance spectroscopy (EIS) and X-ray diffraction provide further evidence for improved electrolyte stability at higher Li salt concentration and the mechanistic theory thereof.
UR - http://www.scopus.com/inward/record.url?scp=84992198046&partnerID=8YFLogxK
U2 - 10.1149/2.0951613jes
DO - 10.1149/2.0951613jes
M3 - Article
AN - SCOPUS:84992198046
SN - 0013-4651
VL - 163
SP - A2673-A2678
JO - Journal of the Electrochemical Society
JF - Journal of the Electrochemical Society
IS - 13
ER -
