Enhancing performance of Li–S cells using a Li–Al alloy anode coating
By Kim, Hyea; Lee, Jung Tae; Lee, Dong-Chan; Oschatz, Martin; Cho, Won Il; Kaskel, Stefan & Yushin, Gleb
Published in Electrochemistry Communications
NULL
2013
Abstract
Thin lithium aluminum (Li–Al) alloy layer is formed on the lithium surface in order to mitigate the polysulfide shuttle phenomenon. The effect of curing temperature of the alloy on electrochemical performance is studied. Electrochemical tests show the ability of the alloy layer to stabilize polarization during plating/deplating of Li ions. Li–S cells with the alloy-coated Li anodes show batter rate capability, lower charge transfer resistance, improved cycle stability and higher coulombic efficiency, compared to bare Li anode.
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