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Polypyrrole nanotube film (PNTF) is self-assembled with a simple method from PPy nano-tubes. Consequently, PNTF is sandwiched between sulfur cathode and separator to act as the functional interlayer for Li–S battery. Because of the adsorption effect between PPy and lithium polysulfides and the conductivity of PPy films, the polymer interlayer can not only decrease the polarization of sulfur cathode...
Polypyrrole functional interlayer is in-situ fabricated uniformly onto the surface of sulfur cathode to inhibit the dissolution of lithium polysulfides and protect sulfur cathode. Li–S battery with the functional inlayer shows an encouraging electrochemical performance. The initial discharge capacity is 719 mAh g−1 and the capacity retains at 846 mAh g−1 even after 200 cycles at 0.2C with an average...
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