Design and Synthesis of Controllable Carbon@TiO2 Core-Shelled Structures as Sulfur Carrier for Li-S Battery

The Problem

        Global demand for energy storage will exceed $400 billion by 2030, yet Li–S batteries, despite offering nearly 5× higher energy density (~2600 Wh/kg) than Li-ion at lower cost, face critical barriers such as poor conductivity, polysulfide shuttle, and severe volume expansion.

Innovation

      To address these issues, this research develops carbon@TiO₂ core–shell nanostructures synthesized through a simple templating method with controlled sulfur loading, where the carbon layer enhances conductivity and the TiO₂ shell anchors polysulfides and buffers expansion. Experimental validation (TGA, XRD, cycling, EIS) confirmed stable sulfur incorporation, extended cycle life, higher retention, lower resistance, and safer operation, positioning this design as a scalable and sustainable solution for next-generation energy storage.

Features

= Enhanced cycle stability and higher capacity retention exhibited via electrochemical tests.

= Enhanced conductivity and polysulfide shuttle suppression for safer and more reliable operation.

= Low-cost synthesis