Design of a novel electrolyte additive for high voltage LiCoO2 cathode lithium-ion batteries: Lithium 4-benzonitrile trimethyl borate

In this work, a failure mechanism of tris(trimethylsilyl)phosphite (TMSPi), as a popular additive in a LiPF6 containing electrolyte for lithium ion batteries, is proposed and elucidated for the first time.

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An Electrolyte Additive for Use in High-Voltage Lithium-Ion Batteries

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.423-426.503 ◽

2013 ◽

Vol 423-426 ◽

pp. 503-506

Author(s):

Ai Fang Liu

Keyword(s):

Lithium Ion Batteries ◽

High Voltage ◽

Lithium Ion ◽

Electrolyte Composition ◽

Anode Surface ◽

Electrochemical Test ◽

Electrolyte Additive ◽

Sei Film ◽

Electrochemical Window ◽

Lowest Unoccupied Molecular Orbital

A new compound was successfully synthesized as an additive in electrolyte used for high-voltage lithium-ion batteries, owing to its unique structure with the sulfone group that can increase conductivity and broaden the electrochemical window of existing electrolyte. Its lowest unoccupied molecular orbital (LUMO) is-2.686 eV, respectively. The lower LUMO value results in formation of solid electrolyte interface (SEI) film on anode surface which is prior to other solvents and can impede the electrolyte composition. Through the electrochemical test, the electrolyte having this additive (0.2 wt%) showed wider voltage window, enduring the potential up to 5.5V higher than that of 4.8V performed by available commercial high-voltage electrolytes. The additive to electrolyte was effective not only for Li/Li3V2(PO4)3 cell but also for Li/LiMn2O4 cells with a cut-off range of 3.0-4.8 V.

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N-(triphenylphosphoranylidene) aniline as a novel electrolyte additive for high voltage LiCoO2 operations in lithium ion batteries

Electrochimica Acta ◽

10.1016/j.electacta.2011.03.041 ◽

2011 ◽

Vol 56 (14) ◽

pp. 5195-5200 ◽

Cited By ~ 57

Author(s):

Je-Nam Lee ◽

Gi-Beom Han ◽

Myung-Hyun Ryou ◽

Dong Jin Lee ◽

Jongchan Song ◽

...

Keyword(s):

Lithium Ion Batteries ◽

High Voltage ◽

Lithium Ion ◽

Electrolyte Additive

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SnO2-coated LiCoO2 cathode material for high-voltage applications in lithium-ion batteries

Solid State Ionics ◽

10.1016/j.ssi.2014.01.016 ◽

2014 ◽

Vol 256 ◽

pp. 89-92 ◽

Cited By ~ 20

Author(s):

Chairul Hudaya ◽

Ji Hun Park ◽

Joong Kee Lee ◽

Wonchang Choi

Keyword(s):

Cathode Material ◽

Lithium Ion Batteries ◽

High Voltage ◽

Lithium Ion ◽

Licoo2 Cathode

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Novel piperidinium-based ionic liquid as electrolyte additive for high voltage lithium-ion batteries

RSC Advances ◽

10.1039/d1ra01454d ◽

2021 ◽

Vol 11 (25) ◽

pp. 15091-15098

Author(s):

Wenlin Zhang ◽

Qingcha Ma ◽

Xuejiao Liu ◽

Shuangcheng Yang ◽

Fengshou Yu

Keyword(s):

Ionic Liquid ◽

Lithium Ion Batteries ◽

High Voltage ◽

Lithium Ion ◽

Cycle Performance ◽

Electrolyte Additive ◽

Initial Discharge ◽

Suitable Amount ◽

P Cells ◽

Discharge Capacities

Cells with 5 wt%, 10 wt%, and 15 wt% PP1, CNFSI addition exhibit higher initial discharge capacities than the cell with blank electrolyte. The addition of IL with suitable amount significantly increases the cycle performance..

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