科研之友
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摘要
Twin problems has long disturbed the progress of current non-aqueous lithium air battery: one is the corrosion of lithium anode caused by O-2 or electrolyte, and the other is low oxygen transfer speed in the electrolyte. In the present paper, a LiTFSI-TMS electrolyte was well optimized using lithium nitrate as film-forming additive and perfluorotributylamine as an oxygen carrier. A synergistic effect is therefore obviously verified by the fantastic improvement of conductivity, oxygen solubility, electrochemical stability and chemical compatibility to lithium anode. At last, it is observed that the newly-modified battery cycles for more than 150 cycles, far exceeding 120 cycles for that without any modification at a current density of 0.1 mA/cm(2).
