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Issue 9, 2011
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High rate oxygen reduction in non-aqueous electrolytes with the addition of perfluorinated additives

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Abstract

The discharge rate capability of Li–air batteries is substantially increased by using perfluorinated compounds as oxygen carriers. The solubility of oxygen in a non-aqueous electrolyte can be significantly increased by the introduction of such compounds, which leads to the increase in the diffusion-limited current of oxygen reduction on the gas diffusion electrode in a Li–air battery. The perfluorinated compound is found to be stable within the electrochemical window of the electrolyte. A powder microelectrode and a rotating disk electrode were used to study the gas diffusion-limited current together with a rotating disk electrode. A 5 mA cm−2 discharge rate is demonstrated in a lab Li–O2cell.

Graphical abstract: High rate oxygen reduction in non-aqueous electrolytes with the addition of perfluorinated additives

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Publication details

The article was received on 26 Apr 2011, accepted on 20 Jun 2011 and first published on 04 Aug 2011


Article type: Paper
DOI: 10.1039/C1EE01556G
Citation: Energy Environ. Sci., 2011,4, 3697-3702
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    High rate oxygen reduction in non-aqueous electrolytes with the addition of perfluorinated additives

    Y. Wang, D. Zheng, X. Yang and D. Qu, Energy Environ. Sci., 2011, 4, 3697
    DOI: 10.1039/C1EE01556G

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