A lithium–sulfur cathode with high sulfur loading and high capacity per area: a binder-free carbon fiber cloth–sulfur material

Abstract

A sulfur cathode with high capacity per area (>7 mA h cm⁻²) and high sulfur loading (6.7 mg cm⁻²) was fabricated by synthesizing a carbon fiber cloth–sulfur composite via a simple method. It is worth noting that an ingenious method is adopted which can improve the performance of Li–S batteries by forming in situ polysulfide ions.