The effect of alkalinity and temperature on the performance of lithium-air fuel cell with hybrid electrolytes

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• 作者：Ping He^a ; Yonggang Wang^a ; Haoshen Zhou ; ^a ; ^{hs.zhou@aist.go.jp"" rel=""nofollow}
• 关键词：Lithium-air fuel cell ; Lithium super ionic conductor glass ; Electrochemical performance ; Galvanistatic measurement ; Electrochemical impedance spectra
• 刊名：Journal of Power Sources
• 出版年：2011
• 出版时间：1 July 2011
• 年：2011
• 卷：196
• 期：13
• 页码：5611-5616
• 全文大小：461 K

文摘

A lithium-air fuel cell combined an air cathode in aqueous electrolyte with a metallic lithium anode in organic electrolyte can continuously reduce O₂ to provide capacity. Herein, the performance of this hybrid electrolyte based lithium-air fuel cell under the mixed control of alkalinity and temperature have been investigated by means of galvanistatic measurement and the analysis of electrochemical impedance spectra. Electromotive force and inner resistance of the cell decrease with the increase of LiOH concentration in aqueous electrolyte. The values ranged from 0.5 to 1.0 M could be the suitable parameters for the LiOH concentration of aqueous electrolyte. Environment temperature exhibited a significant influence on the performance of lithium-air fuel cell. The lithium-air fuel cell can provide a larger power at elevated temperature due to the decrease of all resistance of elements.