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| Home > Publications database > Impact of Selected LiPF $_{6}$ Hydrolysis Products on the High Voltage Stability of Lithium-Ion Battery Cells > print |
| 001 | 828986 | ||
| 005 | 20240712113044.0 | ||
| 024 | 7 | _ | |a 10.1021/acsami.6b09164 |2 doi |
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| 100 | 1 | _ | |a Wagner, Ralf |0 P:(DE-HGF)0 |b 0 |e Corresponding author |
| 245 | _ | _ | |a Impact of Selected LiPF $_{6}$ Hydrolysis Products on the High Voltage Stability of Lithium-Ion Battery Cells |
| 260 | _ | _ | |a Washington, DC |c 2016 |b Soc. |
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| 520 | _ | _ | |a Diverse LiPF6 hydrolysis products evolve during lithium-ion battery cell operation at elevated operation temperatures and high operation voltages. However, their impact on the formation and stability of the electrode/electrolyte interfaces is not yet investigated and understood. In this work, literature-known hydrolysis products of LiPF6 dimethyl fluorophosphate (DMFP) and diethyl fluorophosphate (DEFP) were synthesized and characterized. The use of DMFP and DEFP as electrolyte additive in 1 M LiPF6 in EC:EMC (1:1, by wt) was investigated in LiNi1/3Mn1/3Co1/3O2/Li half cells. When charged to a cutoff potential of 4.6 V vs Li/Li+, the additive containing cells showed improved cycling stability, increased Coulombic efficiencies, and prolonged shelf life. Furthermore, low amounts (1 wt % in this study) of the aforementioned additives did not show any negative effect on the cycling stability of graphite/Li half cells. DMFP and DEFP are susceptible to oxidation and contribute to the formation of an effective cathode/electrolyte interphase as confirmed by means of electrochemical stability window determination, and X-ray photoelectron spectroscopy characterization of pristine and cycled electrodes, and they are supported by computational calculations. |
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| 700 | 1 | _ | |a Winter, Martin |0 P:(DE-Juel1)166130 |b 8 |e Corresponding author |u fzj |
| 773 | _ | _ | |a 10.1021/acsami.6b09164 |g Vol. 8, no. 45, p. 30871 - 30878 |0 PERI:(DE-600)2467494-1 |n 45 |p 30871 - 30878 |t ACS applied materials & interfaces |v 8 |y 2016 |x 1944-8252 |
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