Polysulfide dissolution control: the common ion effect

Abstract

A Li–sulfur cell with a high discharge capacity of over 1300 mAh g⁻¹ at a C/10 rate, and a controlled overcharge amount less than 1%, was manufactured by synthesizing a carbon–sulfur nano-composite via a wet milling process, and suppressing polysulfide dissolution using an electrolyte with a highly concentrated lithium salt.