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

Zhang, Wenlin; Ma, Qingcha; Liu, Xuejiao; Yang, Shuangcheng; Yu, Fengshou

doi:10.1039/d1ra01454d

Cited by 17 publications

(11 citation statements)

References 50 publications

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“…In addition to the additives mentioned earlier, sulfone additives, [ 83,84 ] benzene derivative additives, [ 85 ] and ionic liquid additives [ 86,87 ] have also been reported. The thickness of the film formed on the cathode material and the types of elements are variant, and the reaction mechanism is different.…”

Section: Different Electrolyte Modification Strategies Improve High‐v...mentioning

confidence: 99%

High‐Voltage Electrolyte Chemistry for Lithium Batteries

Guo

Wang

et al. 2022

Small Science

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Lithium batteries are currently the most popular and promising energy storage system, but the current lithium battery technology can no longer meet people's demand for high energy density devices. Increasing the charge cutoff voltage of a lithium battery can greatly increase its energy density. However, as the voltage increases, a series of unfavorable factors emerges in the system, causing the rapid failure of lithium batteries. To overcome these problems and extend the life of high‐voltage lithium batteries, electrolyte modification strategies have been widely adopted. Under this content, this review first introduces the degradation mechanism of lithium batteries under high cutoff voltage, and then presents an overview of the recent progress in the modification of high‐voltage lithium batteries using electrolyte modification strategies. Finally, the future direction of high‐voltage lithium battery electrolytes is also proposed.

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Section: Different Electrolyte Modification Strategies Improve High‐v...mentioning

confidence: 99%

High‐Voltage Electrolyte Chemistry for Lithium Batteries

Guo

Wang

et al. 2022

Small Science

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“…The diffusivities of the [C 1O1 mpip] + , [C 1O1 mmor] + and Li + cations, [FSI] À and [TFSI] À anions for both the neat and 10 mol% Li-salt samples were determined by 1 H, 19 F and 7 Li pulsed-field gradient double stimulated echo (PFG-STE) NMR. The samples were packed into 5 mm NMR tubes inside an Arfilled glovebox.…”

Section: Pulsed-field Gradient Nuclear Magnetic Resonance Spectroscopymentioning

confidence: 99%

“…Among the various anions, fluorinated anions such as TFSI and FSI have been widely studied due to their wide electrochemical stability, low viscosity, and ability to form stable and conductive solid-electrolyte interface (SEI) layers. [3][4][5][6][7][8] Both lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) and lithium bis(fluorosulfonyl)imide (LiFSI) are commercially available and considered suitable for battery applications.…”

Section: Introductionmentioning

confidence: 99%

Structure and interactions of novel ether-functionalised morpholinium and piperidinium ionic liquids with lithium salts

Warrington

O’Dell

Hutt³

et al. 2023

Energy Adv.

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“…In addition, with the degradation of lithium-ion batteries, their ability to resist external abuse is also declining . However, many studies have been done to improve the ability of lithium-ion batteries to tolerate external abuse, such as adding electrolyte additives, , modifying active materials, and other methods. However, the thermal runaway of lithium-ion batteries can still easily occur.…”

Section: Introductionmentioning

confidence: 99%

Revealing the Impact of Fast Charge Cycling on the Thermal Safety of Lithium-Ion Batteries

Zhang

Wei

Chen

et al. 2022

ACS Appl. Energy Mater.

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The safety of the degraded lithium-ion batteries has an essential impact on second life application. This study systematically investigates the thermal safety changes of lithium-ion batteries after deep aging under the fast charge aging path and reveals the degradation mechanisms caused by fast charge cycling. Lithium plating is the primary degradation mechanism, which thickens the solid electrolyte interface film, causes the loss of active lithium and electrolyte, and leads to a significant increase in impedance and a dramatic decrease in capacity. Therefore, compared with the fresh cells, the heat generation rate increases, while the total heat generation is reduced for aged cells. Besides, the thickened solid electrolyte interface film has lower thermal stability, decreasing the self-heating temperature for aged cells. Furthermore, thermal runaway results of partial cells prove that fast charge cycling reduces the thermal stability of the anode, which further proves that the thermal runaway-triggering temperature decrease is the result of the combination of the anode–electrolyte and anode–cathode reactions. Moreover, fast charge cycling reduces the lithium plating potential upon overcharging, which leads to the occurrence of side reactions in advance, creating the ratio of side reaction heat increase of aged cells for thermal runaway triggering. In addition, the loss of active materials reduces the maximum temperature and maximum temperature rise rate of the aged cell. The findings can provide references for battery safety management system optimization and safer battery screening.

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

Abstract: 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..

Cited by 17 publications

References 50 publications

High‐Voltage Electrolyte Chemistry for Lithium Batteries

High‐Voltage Electrolyte Chemistry for Lithium Batteries

Structure and interactions of novel ether-functionalised morpholinium and piperidinium ionic liquids with lithium salts

Revealing the Impact of Fast Charge Cycling on the Thermal Safety of Lithium-Ion Batteries

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