Li-O 2 battery with a dimethylformamide electrolyte

Yuhui Chen; Stefan A. Freunberger; Zhangquan Peng; Fanny Bardé; Peter G. Bruce

doi:10.1021/ja302178w

Li-O 2 battery with a dimethylformamide electrolyte

Yuhui Chen, Stefan A. Freunberger, Zhangquan Peng, Fanny Bardé, Peter G. Bruce^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

Stability of the electrolyte toward reduced oxygen species generated at the cathode is a crucial challenge for the rechargeable nonaqueous Li-O ₂ battery. Here, we investigate dimethylformamide as the basis of an electrolyte. Although reactions at the O ₂ cathode on the first discharge-charge cycle are dominated by reversible Li ₂O ₂ formation/decomposition, there is also electrolyte decomposition, which increases on cycling. The products of decomposition at the cathode on discharge are Li ₂O ₂, Li ₂CO ₃, HCO ₂Li, CH ₃CO ₂Li, NO, H ₂O, and CO ₂. Li ₂CO ₃ accumulates in the electrode with cycling. The stability of dimethylformamide toward reduced oxygen species is insufficient for its use in the rechargeable nonaqueous Li-O ₂ battery.

Original language	English
Pages (from-to)	7952-7957
Number of pages	6
Journal	Journal of the American Chemical Society
Volume	134
Issue number	18
DOIs	https://doi.org/10.1021/ja302178w
Publication status	Published - 9 May 2012

ASJC Scopus subject areas

General Chemistry
Catalysis
Biochemistry
Colloid and Surface Chemistry

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Advanced Materials Science

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title = "Li-O 2 battery with a dimethylformamide electrolyte",

abstract = "Stability of the electrolyte toward reduced oxygen species generated at the cathode is a crucial challenge for the rechargeable nonaqueous Li-O 2 battery. Here, we investigate dimethylformamide as the basis of an electrolyte. Although reactions at the O 2 cathode on the first discharge-charge cycle are dominated by reversible Li 2O 2 formation/decomposition, there is also electrolyte decomposition, which increases on cycling. The products of decomposition at the cathode on discharge are Li 2O 2, Li 2CO 3, HCO 2Li, CH 3CO 2Li, NO, H 2O, and CO 2. Li 2CO 3 accumulates in the electrode with cycling. The stability of dimethylformamide toward reduced oxygen species is insufficient for its use in the rechargeable nonaqueous Li-O 2 battery.",

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year = "2012",

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AU - Chen, Yuhui

AU - Freunberger, Stefan A.

AU - Peng, Zhangquan

AU - Bardé, Fanny

AU - Bruce, Peter G.

PY - 2012/5/9

Y1 - 2012/5/9

N2 - Stability of the electrolyte toward reduced oxygen species generated at the cathode is a crucial challenge for the rechargeable nonaqueous Li-O 2 battery. Here, we investigate dimethylformamide as the basis of an electrolyte. Although reactions at the O 2 cathode on the first discharge-charge cycle are dominated by reversible Li 2O 2 formation/decomposition, there is also electrolyte decomposition, which increases on cycling. The products of decomposition at the cathode on discharge are Li 2O 2, Li 2CO 3, HCO 2Li, CH 3CO 2Li, NO, H 2O, and CO 2. Li 2CO 3 accumulates in the electrode with cycling. The stability of dimethylformamide toward reduced oxygen species is insufficient for its use in the rechargeable nonaqueous Li-O 2 battery.

AB - Stability of the electrolyte toward reduced oxygen species generated at the cathode is a crucial challenge for the rechargeable nonaqueous Li-O 2 battery. Here, we investigate dimethylformamide as the basis of an electrolyte. Although reactions at the O 2 cathode on the first discharge-charge cycle are dominated by reversible Li 2O 2 formation/decomposition, there is also electrolyte decomposition, which increases on cycling. The products of decomposition at the cathode on discharge are Li 2O 2, Li 2CO 3, HCO 2Li, CH 3CO 2Li, NO, H 2O, and CO 2. Li 2CO 3 accumulates in the electrode with cycling. The stability of dimethylformamide toward reduced oxygen species is insufficient for its use in the rechargeable nonaqueous Li-O 2 battery.

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ER -

Li-O 2 battery with a dimethylformamide electrolyte

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