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36 Krypton learned that the Tianyancha App showed that on December 27, BYD Co., Ltd. and Shanghai BYD Co., Ltd. announced the patents for “polymer protective film, metal lithium anode, lithium battery and vehicle”. The abstract shows that the polymer protective film is composed of polymer A and polymer B, wherein polymer B is a conductive polymer, and the structural formula of polymer A is as follows: or the polymer in the polymer protective film of this application A can effectively conduct lithium ions, promote lithium ion transmission, inhibit the formation of lithium dendrites, and at the same time improve the flexibility of the polymer protective film, which is conducive to adapting to the expansion of lithium metal; polymer B is conducive to the uniform distribution of lithium ions, and then Improve the safety performance and cycle performance of the battery.
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