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AssigneeResearch & Business Foundation Sungkyunkwan University
InventorsDuk Joon Kim, Anh Le Mong, Hyung Joon Jeon
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Disclosed is a protective layer to protect a lithium metal negative electrode for a lithium secondary battery, in which the protective layer may inhibit formation of lithium dendrite and improve thermal/chemical stability, and conductivity of lithium ions. Further, disclosed are a production method of the protective layer, and a lithium secondary battery including the protectively layer. The protective layer contains a poly(arylene ether sulfone)-poly(ethylene glycol) graft copolymer represented by a following Chemical Formula 1: where, in the Chemical Formula 1, n is an integer of 60 to 80, and m is an integer of 40 to 45.
A method for synthesizing a poly(arylene ether sulfone)-poly(ethylene glycol) graft copolymer, the method comprising performing esterification reaction between a compound represented by a following Chemical Formula 1-1 and a compound represented a following Chemical Formula 1-2 to synthesize the poly(arylene ether sulfone)-poly(ethylene glycol) graft copolymer represented by a following Chemical Formula 1:
A protective layer for protecting a lithium metal negative electrode for a lithium secondary battery, the protective layer containing a poly(arylene ether sulfone)-poly(ethylene glycol) graft copolymer represented by a following Chemical Formula 1:
A method for producing a protective layer for protecting a lithium metal negative electrode for a lithium secondary battery, the method comprising:
Dependencies are inferred from the claim text.