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In this investigation, the sulfophenylated poly (ether ether ketone ketone) (SPEEKK) separators for lithium‐ion batteries (LIBs) are prepared via electrospinning. The electrospun sulfophenylated poly (ether ether ketone ketone) membranes (es‐SP) are then modified with lithium bis(trifuoro‐methanesulfonyl)imide (LiTFSI) by immersing in the LiTFSI/ethanol solution to obtain the modified es‐SP composite...
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