scholarly journals Study of decomposition products by gas chromatography-mass spectrometry and ion chromatography-electrospray ionization-mass spectrometry in thermally decomposed lithium hexafluorophosphate-based lithium ion battery electrolytes

RSC Advances ◽  
2015 ◽  
Vol 5 (98) ◽  
pp. 80150-80157 ◽  
Author(s):  
Vadim Kraft ◽  
Waldemar Weber ◽  
Martin Grützke ◽  
Martin Winter ◽  
Sascha Nowak
Keyword(s):  
Mass Spectrometry ◽  
Lithium Ion Battery ◽  
Ethylene Carbonate ◽  
Lithium Ion ◽  
Gas Chromatography Mass Spectrometry ◽  
Ionization Mass ◽  
Decomposition Products ◽  
Ethyl Methyl ◽  
Ethyl Methyl Carbonate ◽  
Methyl Carbonate

In this work, the thermal decomposition of a lithium ion battery electrolyte (1 M LiPF6 in ethylene carbonate/ethyl methyl carbonate, 50/50 wt%) with a focus on the formation of organophosphates was systematically studied.

Compatibilities between Lithium Bis(Oxalate)Borate-Based Electrolyte and LiFePO4, LiMn2O4 or LiNi0.5Mn1.5O4 Cathodes for Lithium-Ion Batteries

2014 ◽  
Vol 953-954 ◽  
pp. 1022-1025 ◽  
Author(s):  
Shi You Li ◽  
Jin Liang Liu ◽  
Xiao Ling Cui ◽  
Li Ping Mao
Keyword(s):  
Lithium Ion Batteries ◽  
Electric Vehicles ◽  
Ethylene Carbonate ◽  
Lithium Ion ◽  
Cycle Performance ◽  
Electrochemical Performances ◽  
Rate Performance ◽  
Ethyl Methyl ◽  
Ethyl Methyl Carbonate ◽  
Methyl Carbonate

Olivine-type LiFePO4 and crystal structure LiMn2O4 or LiNi0.5Mn1.5O4 are promising cathode materials for electric vehicles (EVs) applications. To find more appropriate electrolyte systems to exert the perfect electrochemical performance of LiFePO4, LiMn2O4 and LiNi0.5Mn1.5O4 cathodes, the electrochemical performances of LiBOB-ethylene carbonate (EC)/ethyl methyl carbonate (EMC)/diethyl carbonate (DEC) electrolyte are investigated in this paper. In LiFePO4/Li, LiMn2O4/Li and LiNi0.5Mn1.5O4/Li cells, this novel electrolyte exhibits several advantages, such as stable cycle performance and good rate performance. It suggests that LiBOB-EC/EMC/DEC electrolyte has good compatibility with the three kinds of cathodes, and would be an attractive electrolyte for lithium-ion batteries based upon LiFePO4, LiMn2O4 and LiNi0.5Mn1.5O4 cathodes.

scholarly journals Structure determination of organic aging products in lithium-ion battery electrolytes with gas chromatography chemical ionization mass spectrometry (GC-CI-MS)

RSC Advances ◽  
2016 ◽  
Vol 6 (62) ◽  
pp. 57253-57260 ◽  
Author(s):  
Martin Grützke ◽  
Waldemar Weber ◽  
Martin Winter ◽  
Sascha Nowak
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Lithium Ion Battery ◽  
Chemical Ionization ◽  
Method Development ◽  
Lithium Ion ◽  
Ionization Mass Spectrometry ◽  
Chemical Ionization Mass Spectrometry ◽  
Ionization Mass

For Gas Chromatography Chemical Ionization Mass Spectrometry (GC-CI-MS) method development, a standard lithium-ion battery (LIB) electrolyte was thermally aged at 95 °C for a faster generation of decomposition products.

Electrochemical Performance of Lithium Difluoro(Oxalate)Borate Synthesized by a Novel Method

2011 ◽  
Vol 197-198 ◽  
pp. 1121-1124 ◽  
Author(s):  
Shi You Li ◽  
Xiao Li Xu ◽  
Xin Ming Shi ◽  
Xiao Ling Cui
Keyword(s):  
Solid Electrolyte Interphase ◽  
Lithium Ion ◽  
Cycling Performance ◽  
Inert Atmosphere ◽  
Capacity Retention ◽  
Ethyl Methyl ◽  
Ethyl Methyl Carbonate ◽  
Novel Method ◽  
Methyl Carbonate ◽  
Continuous Technology

Lithium difluoro(oxalate)borate (LiODFB) as an alternative salt for lithium-ion batteries, its application was limited by salt synthesis. In this study, high purity LiODFB was synthesized by simple and continuous technology using purified self-made BF3, the inert atmosphere and vacuum protection was avoided. Moreover, 0.7 mol L-1LiODFB-PC (propylene carbonate)/EMC (ethyl methyl carbonate)/DMC (dimethyl carbonate) (1:1:1, by volume) were prepared to assembling Li/MCMB (mesocarbon microbead) cell. Solid Electrolyte Interphase (SEI) was formed to stabilized MCMB structure even in one third (by volume) of PC in the electrolyte with the help of LiODFB. LiFePO4/Li cell was assembled as well. The cell based on LiODFB had excellent cycling performance and capacity retention.

Bridging role of ethyl methyl carbonate in fluorinated electrolyte on ionic transport and phase stability for lithium-ion batteries

2021 ◽  
Vol 494 ◽  
pp. 229760
Author(s):  
Hailemariam Kassa Bezabh ◽  
Shuo-Feng Chiu ◽  
Teklay Mezgebe Hagos ◽  
Meng-Che Tsai ◽  
Yosef Nikodimos ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Phase Stability ◽  
Lithium Ion ◽  
Ionic Transport ◽  
Ethyl Methyl ◽  
Ethyl Methyl Carbonate ◽  
Methyl Carbonate ◽  
Fluorinated Electrolyte
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