Effect of Lithium Difluoro(oxalato)Borate-Based Electrolyte on the Performance of LiNi0.5Mn1.5O4 for High-Voltage Lithium-Ion Batteries

2013 ◽  
Vol 842 ◽  
pp. 3-6
Author(s):  
Xiao Peng Li ◽  
Xiao Ling Cui ◽  
Man Yun Wang ◽  
Xiu Xiu Wang
Keyword(s):  
Lithium Ion Batteries ◽  
Dimethyl Carbonate ◽  
Ethylene Carbonate ◽  
Lithium Ion ◽  
Discharge Voltage ◽  
Cycle Performance ◽  
Electrochemical Performances ◽  
Electrolyte System ◽  
Oxidation Potentials ◽  
Voltage Plateau

LiNi0.5Mn1.5O4is a promising 5 V class anode material for high power applications; however, before applying in lithium-ion batteries, it is necessary to find more appropriate electrolyte systems to exert the perfect electrochemical performance of LiNi0.5Mn1.5O4. In this paper, the electrochemical performances of lithium difluoro (oxalato) borate (LiODFB)-sulfolane (SL)/dimethyl carbonate (DMC) electrolyte are investigated. It shows high oxidation potentials (>5.4 V) and satisfactory conductivities. When used in LiNi0.5Mn1.5O4/Li cells, compared to the cell with the electrolyte system of LiPF6-ethylene carbonate/DMC, LiODFB-SL/DMC electrolyte exhibits more stable cycle performance and higher discharge voltage plateau (>4.64 V).

Effect of Lithium Bis(oxalate)Borate-Based Electrolyte on the Performance of LiNi0.5Mn1.5O4 for High Voltage Lithium-Ion Batteries

2012 ◽  
Vol 519 ◽  
pp. 156-159 ◽  
Author(s):  
Shi You Li ◽  
Yang Yu Zhao ◽  
Wei Zhao ◽  
Xiao Ling Cui
Keyword(s):  
Lithium Ion Batteries ◽  
Dimethyl Carbonate ◽  
Ethylene Carbonate ◽  
Lithium Ion ◽  
Discharge Voltage ◽  
Cycle Performance ◽  
Electrochemical Performances ◽  
Electrolyte System ◽  
Oxidation Potentials ◽  
Voltage Plateau

LiNi0.5Mn1.5O4 is a promising 5 V class anode material for high power applications, however, before applying in lithium-ion batteries, it is necessary to find more appropriate electrolyte systems to exert the perfect electrochemical performance of LiNi0.5Mn1.5O4. In this paper, the electrochemical performances of LiBOB-propylene carbonate (PC)/dimethyl carbonate (DMC) electrolyte are investigated. It shows high oxidation potentials (>5.5 V) and satisfactory conductivities, When used in LiNi0.5Mn1.5O4/Li cells, compared to the cell with the electrolyte system of LiPF6-ethylene carbonate (EC)/dimethyl carbonate (DMC) electrolyte, LiBOB-PC/DMC electrolyte exhibit several advantages, such as more stable cycle performance, higher discharge voltage plateau (>4.64 V), higher coulomb efficiency, and higher mean voltage (4.55 V).

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.

Investigation of Lithium Difluoro (Sulfato) Borate as a Salt of Electrolyte for High-Temperature Lithium-Ion Batteries

2014 ◽  
Vol 953-954 ◽  
pp. 1049-1052 ◽  
Author(s):  
Shi You Li ◽  
Xiao Peng Li ◽  
Li Ping Mao ◽  
Xiao Ling Cui
Keyword(s):  
Lithium Ion Batteries ◽  
Dimethyl Carbonate ◽  
Ethylene Carbonate ◽  
Lithium Ion ◽  
Cycling Performance ◽  
The Novel ◽  
Retention Performance ◽  
Capacity Retention ◽  
And Storage ◽  
Discharge Capacities

Lthium difluoro (sulfato) borate (LiBF2SO4) is a prospecting salt for electrolyte of lithium-ion batteries. The effect of LiBF2SO4 salt on conductivity, charge-discharge capacities, temperature performance, cycling life and storage life at 60 °C is investigated. In graphite half cells at 60 °C, LiBF2SO4-ethylene carbonate (EC)/ dimethyl carbonate (DMC) electrolyte favourably facilitates the formation of a thermal stable, effective and conductive interface film on the surface of carbonaceous anode. Besides, in LiCoO2 half cells at 60 °C, the electrolyte containing the novel salt exerts several advantages, such as stable cycling performance, and good capacity retention performance.

Electrochemical Performances of the Binary Solvent Electrolytes with Lithium Bis(Oxalate)Borate

2014 ◽  
Vol 953-954 ◽  
pp. 1031-1034
Author(s):  
Jie Jing ◽  
Xiao Ling Cui ◽  
Li Ping Mao ◽  
Shi You Li
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Electrochemical Performances ◽  
Binary Solvent ◽  
Electrochemical Behaviors ◽  
Oxidation Potentials ◽  
Film Forming ◽  
High Oxidation ◽  
Forming Characteristics

Abstract. Lithium bis(oxalato)borate (LiBOB) is a promising salt for lithium ion batteries. The electrochemical behaviors of tetramethylene sulfone (TMS) / dimethyl sulfite (DMS) with different volume ratios of 1:2, 1:1, and 2:1 with 0.7 mol L-1 LiBOB salt are investigate in this work. Although the proportion of different solvents show different electrochemical performance, both of the LiBOB-based electrolytes show high oxidation potentials (> 5.5 V), and excellent film-forming characteristics.

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