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New solid polymer electrolytes were fabricated by the addition of lithium perchlorates in the blends of polyethylene oxide (PEO, MW=5×10 6 ) and poly-4-vinylpyridine (PVP, MW=1.6×10 6 ). Not only the coordinating bonding between ether units (–O–) of PEO and Li + ions at about 1100cm −1 but also the existence of pyridine salts at about 3500cm −1 were definitely...
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