Abstract
In this paper, a novel composite interlayer (SiO2/AP) was prepared by using nano-SiO2 and multi-walled carbon nanotubes (MWCNTs) and aramid paper (AP). The SiO2/AP interlayer has a 3D porous structure, which not only reduces the loss of active materials, but also captures soluble polysulfides; SiO2/AP material has strong chemical adsorption capacity for adsorbing polysulfide. The electrochemical test results showed that the primary discharge capacity of electrode with SiO2/AP interlayer reached 1635 mAh g−1 at a rate of 0.05 C. The remarkable cycling stability was obtained, the high reversible capacity of 1039 mAh g−1 with negligible fading rate of 0.0222% per cycle at 1 C were obtained after 200 cycles.
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